Unidade de Tribologia, Vibrações e Manutenção Industrial
Tribology, Vibrations and Industrial Management Unit
CETRIB
Unidade de Tribologia, Vibrações
e Manutenção Industrial
IDMEC
U. Porto
FEUP
DEMec
INEGI
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
1 of 54
CETRIB
Unidade de Tribologia, Vibrações e Manutenção Industrial
Tribology, Vibrations and Industrial Management Unit
CETRIB
Created in January 1991 as a Research Unit of INEGI.
Integrated in Research Unit nº 130 of F. C. T.
“Experimental Mechanics and New Materials”
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Integrated in LAETA
Laboratório Associado de Energia, Transportes e Aeronáutica.
R&D topics:
Tribology of machine elements (friction, lubricants / lubrication, wear …);
Surface engineering and surface coatings;
Vibration of machines and structures;
Industrial reliability and maintenance.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Instituto de Engenharia Mecânica e Gestão Industrial
Institute of Mechanical Engineering and Industrial Management
Innovation and technology transfer institute, providing the interface between the
Department of Mechanical Engineering of U. P. and industry.
Created in 1986 as a non-profit organization,
recognized by the Portuguese Government as an institution of public interest.
Main activities:
Research and development in mechanical engineering and industrial
management;
Main R&D Contracts:
Industrial Companies (50%), FCT (30%), EU (20%).
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Departamento de Engenharia Mecânica - DEMec
Department of Mechanical Engineering
Owner of Mechanical Engineering Integrated Master Degree
(5 years engineering degree);
Very strong participation in the Industrial Engineering and Management
Integrated Master Degree (5 years engineering degree);
Offers a PhD Degree (3-4 years) in several areas of Mechanical Engineering.
Main Scientific Areas:
Applied Mechanics;
Automation, Instrumentation and Control;
Fluids and Heat;
Industrial Design;
Materials and Technological Processes;
Mathematics;
DEMec holds two interface institutes: INEGI and IDMEC.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Faculdade de Engenharia da Universidade do Porto
Engineering Faculty, Porto Universitity
FEUP dates back to 1762, when the Nautical School was born;
In 1911, it was founded as an Affiliated School to the Faculty of Sciences;
Became a Technical Faculty in 1915;
In 1926 gained the status of Faculty of Engineering.
Nowadays FEUP is the largest faculty of Porto University:
More than 6,000 students, more than 400 lecturers, more than 300 PhDs;
Budget – more than 50 M€/year.
8 Integrated Master Degrees and 21 Master and Doctoral Degrees;
Departments: Civil, Chemical, Electrical and Computer, Informatics,
Industrial Eng. and Management, Mechanical, Metallurgical and Mining & Ambient.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
CETRIB
1. TRIBOLOGY OF MACHINE ELEMENTS
On-going R&D activities:
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Gears, rolling bearings, cam / follower, piston ring / cylinder liner, journal bearings …
Gear oils, base oils (Mineral, Ester, PAO, PAG), additives, biodegradability, low-toxicity;
Industrial gear oils; Windturbine gear oils, Bio-oils …
Greases, Lithium and Polymeric thickeners, bleed oil, Bio greases …
Gears: low-loss geometry, lubrication, scuffing, micropitting, wear, torque loss …
Rolling bearings: friction torque, rolling torque, sliding torque, power loss…
Rolling bearing: oil and grease lubrication;
Gear coatings, gear materials, …
Lubricant analysis, failure analysis, machine condition monitoring …
…
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
2. SURFACE ENGINEERING AND SURFACE COATINGS
On-going R&D activities:
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Tribology of nano reinforced coatings for journal bearings
(together with Chemical Engineering. Department).
Hard coatings tribology (Ti B2 and other systems).
Gear coatings – MoS2-Ti, and C-Cr.
High speed machining;
Titanium alloys milling and drilling.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
3. VIBRATION OF MACHINES AND STRUCTURES
On-going R&D activities:
CETRIB
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Vibration analysis/ Experimental modal analysis, Signal analysis: machines, structures,
gearboxes;
Passive vibration control technologies/ viscoelastic damping treatments, composition
cork, shunted piezoelectric devices: circular saw blades, railway wheels, panels,
composites with viscoelastic layers;
Active vibration control technologies/ piezoelectric sensors and actuators: composites
with piezoelectric layers, shunted modal piezoelectric transducers;
Vibroacoustic of vibrating structures: cavity-plate system with viscoelastic damping
treatments.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
4. INDUSTRIAL RELIABILITY AND MAINTENANCE
On-going R&D activities:
CETRIB
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Maintenance of machines, installations, refining installations, …
Reliability of machines, installations, refining installations …
RAMS Analysis
RBM, RCM and TPM
Lean Maintenance and Management
(Physical) Asset Management – BS PAS - 55
Auditing of Reliability and Maintenance
Lubricant analysis (Viscosity K&D, Pour point, TBN, Oil View, Ferrometry, Ferrography,
Particle counting, Particle filtering, FTIR …)
Lubricant analysis – steam turbines, compressors, engines, gearboxes …
Failure analysis (gears, rolling bearings, gearboxes, engines …)
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Personnel
CETRIB
The technical personnel of CETRIB integrate 16 specialists
trained in research centres of international reputation:
Tribology
Alexandre S Sottomayor
António A Vieira
António L M T Ribeiro
António P M Baptista
Armando J V Campos
Arnaldo M G Pinto
Beatriz M M Graça
Carlos M Sá
Francisco Silva
Jorge H O Seabra
José F D Rodrigues
Luís A A Ferreira
Luís M L Magalhães
Manuel J D Castro
Ramiro C Martins
Rui Martinho
PhD
PhD
PhD
PhD
PhD
PhD
MSc
PhD
PhD
PhD
PhD
PhD
PhD
PhD
PhD
PhD
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
X
X
X
X
Surf Eng
Vibrations
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Maintenance
Outras
X
X
X
Corrosion
X
Adhesives
X
X
SEM
X
X
X
X
X
X
X
X
X
X
X
X
X
X
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X
X
X
Unidade de Tribologia, Vibrações e Manutenção Industrial
Personnel
CETRIB
Alexandre Gonçalves dos Santos de Santiago Sottomayor
Mechanical Eng, MSc, PhD.
Professor Adjunto ISEP-IPP.
Tribology, Lubricant Rheology
Email: [email protected]
António Aguiar Vieira
Mechanical Eng, MSc, PhD.
Auxiliar Professor FEUP.
Surface Engineering.
Email: [email protected]
António Luís Marinho Tomé Ribeiro
Mechanical Eng, MSc, PhD.
Auxiliar Professor FEUP.
Surface Coatings, Corrosion.
Email: [email protected]
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Personnel
CETRIB
António Paulo Monteiro Baptista
Mechanical Eng, MSc, PhD.
Associate Professor FEUP.
Tribology, Surface Engineering, Surface Coatings.
Email: [email protected]
Armando José Vilaça Campos
Mechanical Eng, MSc, PhD.
Professor Adjunto ISEP-IPP.
Tribology, Rolling bearings, Surface Engineering.
Email: [email protected]
Arnaldo Manuel Guedes Pinto
Mechanical Eng, MSc, PhD.
Professor Adjunto ISEP-IPP.
Tribology, Surface Engineering, Adhesives.
Email: [email protected]
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Personnel
CETRIB
Beatriz Maria da Mata Graça
Maintenance Eng, MSc
Researcher, INEGI-CETRIB
Lubricant Analysis Specialist. Industrial Maintenance.
Email: [email protected]
Carlos Sá
Electrical Eng, MSc, PhD
Principal Researcher, FEUP-CEMUP
Scanning Electron Microscopy Specialist.
Email: csá@fe.up.pt
Francisco Silva
Mechanical Eng, MSc, PhD.
Professor Adjunto ISEP-IPP.
Tribology, Surface Engineering, Surface Coatings.
Email
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Personnel
CETRIB
Jorge Humberto Oliveira Seabra
Mechanical Eng, MSc, PhD.
Full Professor FEUP. Director of INEGI-CETRIB.
Tribology, Gears, Rolling Bearings, Industrial Maintenance.
Email: [email protected]
José Fernando Dias Rodrigues
Mechanical Eng, MSc, PhD.
Associate Professor FEUP.
Vibrations of Machine and Structures.
Email: [email protected]
Luís António de Andrade Ferreira
Mechanical Eng, MSc, PhD.
Associate Professor FEUP. Vice-Dean of FEUP.
Tribology, Surface Coatings, Industrial Reliability and Maintenance.
Email: [email protected]
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Personnel
CETRIB
Luís Manuel Leite de Magalhães
Mechanical Eng, MSc, PhD.
Professor Adjunto ISEP-IPP.
Tribology, Surface Engineering, Failure analysis.
Email: [email protected]
Manuel Jorge Dores de Castro
Mechanical Eng, MSc, PhD.
Professor Adjunto ISEP-IPP.
Tribology, Gears.
Email: [email protected]
Ramiro Carneiro Martins
Mechanical Eng, MSc, PhD.
Auxiliar Researcher, INEGI_CETRIB.
Tribology, Gears.
Email: [email protected]
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Test Rigs
CETRIB
Pin-on-Disc Machine
It is used to test materials in sliding contact
over a range of load, speed and lubrication regime.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Configurations:
Rotating pin-on-disc contact;
Reciprocating pin-on-plate contact.
Applications:
Fundamental wear studies;
Friction and wear testing (metals, ceramics,
soft and hard coatings, plastic, polymers and
composites);
Abrasion tests on materials, thrust washer wear test,
wear and corrosion studies,;
Wear screening tests for engine components (piston ring, cylinder liner and piston skirt).
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Test Rigs
CETRIB
Micro-Scale Abrasion Tester; Ball Cratering
Rotation of a ball against a plate in the presence of an abrasive slurry results in
the production of a circular depression.
In the case of coated plates, if the coating is worn through,
a “bulls-eye” depression is observed.
Measurements of the inner and outer diameters of this “bullseye” are easily made and provide an accurate and low cost
method of determining coating thickness.
It is possible to determine the wear coefficient of hard and soft
coatings and monolithic materials by abrasive wear in a ball on
plate contact configuration.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Test Rigs
CETRIB
Reciprocating Tribometer
The block-on-block reciprocating tribometer was designed to
simulate the ring and liner contact in engines.
It is used to test materials in sliding reciprocating motion:
ranges of load - 10 to 260N and frequency - up to 10 Hz.
Four tables in rectilinear alternative motion
(2x30mm fixed course) support the liner blocks.
The upper specimens (ring blocks) are pressed by dead
weights against the liners and transmit the friction force
to a load cell.
fundamental wear studies;
friction and wear testing;
wear screening tests for reciprocating sliding materials.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Test Rigs
CETRIB
Block-On-Cylinder Tribometer
The block-on-cylinder tribometer is used to test materials in sliding contact:
wide ranges of load (70 to 1200N), speed and lubrication
regime.
A rotating steel cylinder (φ = 120) slides against a testing
block, in dry condition or using deep feed lubrication.
Typical applications of the block-on-cylinder machine are
similar to other conventional tribometers:
fundamental wear studies;
friction and wear testing (metals, ceramics, soft
and hard coatings, polymers and composites);
bearing materials wear test;
wear screening tests for continuous sliding mechanical components.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Test Rigs
CETRIB
Four-Ball Machine
The four-ball machine is used to test lubricants under standard (IP 360).
Two types of tests:
scuffing (IP 239), where the upper ball slides against the
3 lower balls,
rolling pitting fatigue (IP 300) where the upper ball rolls
against the 3 lower balls.
A test was developed to test rolling bearings:
Grease and oil lubrication, contaminated lubricants,
internal friction torque, wear …
Parameters that can be controlled during test:
Applied load, temperature, friction torque, rotation speed,
number of cycles, vibration level.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Test Rigs
CETRIB
Twin Disc Machine
The twin-disc machine is frequently used to determine material properties:
Materials contact fatigue properties,
Surface contact fatigue,
Wear resistance.
Surface lubrication is assured by permanent
oil injection into the contact zone.
It is equipped with magnetic sensors
to detect spalls or other significant surface damage.
Control:
normal load applied to the contact and discs
speed.
lubricant temperature.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Test Rigs
CETRIB
FZG Machine
FZG Gear Test Rig is a back-to-back spur gear rig
with 91.5 mm center distance.
FZG tests are used to determine
gear oil and gear materials properties:
Scuffing,
Pitting,
Micropitting,
Slow speed wear.
Operating parameters:
Torque up-to 535 Nm.
Speed: 60 to 3000 rpm.
Dip or pressure lubrication.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Test Rigs
CETRIB
Gearbox Test Rig
Unidade de Tribologia, Vibrações
e Manutenção Industrial
The Gearbox Test Rig was designed to test
different gearboxes sizes and configurations
as well as different test purposes.
It is a power circulating test bench
using two gearboxes with their
high and low speed shafts connected together.
Tests:
Power loss, gear failure, gear oil performance.
Control parameters:
Torque, speed and oil temperature;
Temperatures of testing gearbox and “slave” gearbox.
Speed range: 100 – 4000 rpm; Torque range: 100 – 1350 Nm.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant analysis
CETRIB
Viscosity Measurement
Viscosity has a strong influence on:
Equipment operation;
Friction losses;
Oil film thickness;
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Its measurement and trending is critical on used oil
analysis.
Test methods:
ENGLER Viscosity (ASTM D 1665)
Kinematic viscosity (cSt) at 400C and 1000C
VIBRO Viscosity (SV-10)
Dynamic Viscosity (mPa.s) from 300C to 1000C
Engler Viscometer
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant analysis
Variation of the dynamic viscosity (mPa.s)
with temperature for new and used oil.
CETRIB
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Óleo Novo
Óleo Usado
Vibro Viscosmeter (SV-10)
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant analysis
CETRIB
TAN (Total Acid Number - ASTM D974-97)
The determination of the acid number (TAN) by colorimetric
titration can be used as a measure of lubricant degradation.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Total Acid Number measures the total acid concentration
in the oil.
As the oil ages and oxidizes, small amounts of acid byproducts are formed in the oil causing the AN to increase.
The degree to which AN has increased over the new oil’s
baseline is an indication of the extent to which the oil has
degraded.
A high TAN typically indicates that the useful life of the
oil has expired and it needs to be changed.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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876 Dosimat Plus (Methohm)
Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant analysis
CETRIB
Flash and Fire Points (ASTM D 92 – 98a)
The flash point measures the tendency of the oil to form a
flammable mixture with air under controlled laboratory conditions.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
The flash point is the lowest liquid temperature at which application of the test
flame causes the vapors of the test specimen of the sample to ignite.
Flash point can indicate the possible presence of
highly volatile and flammable materials.
For example, an abnormally low flash point on an
engine oil can indicate gasoline contamination.
Open Cup – Cleveland Method
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant analysis
CETRIB
Particle Counting (ISO 4406:99, NAS 1638, SAE AS 4059)
Oil cleanliness, using particle counting, is an important
tool to extend either, the lubricant and equipment
service life.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Determines the number and size-distribution of the
particles in an oil sample:
Particle Counter (PAMAS SBSS)
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant analysis
CETRIB
Ferrography
Ferrography is a rapidly expanding technology of wear particle
analysis:
Unidade de Tribologia, Vibrações
e Manutenção Industrial
It is a diagnostic and predictive technique;
Offers a convenient means of accurately evaluating the condition of
interacting lubricated components without shutdown.
Types of Ferrography tests:
Direct Reading Ferrograph (DRIII) and Analytical Ferrograph (FM III)
When DR Ferrography reveals a pronounced increase in the particle density and
severity of wear index, an Analytical Ferrogram should be made to determine
specifically what type of wear is occurring and to provide the basis from which a
decision can be made whether to overhaul or continue operation.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant analysis
CETRIB
Direct Reading Ferrograph (DRIII)
The Direct Reading Ferrograph measures quantitatively
the concentration of ferrous particles
contained in a lubricant sample.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
The DR Ferrograph magnetically precipitates
the wear particles from a sample;
Provides digital readings of the quantity of
both large (> 5 µm) and small (< 5µm) particles;
These numerical readings and their relative
values provide a reliable basis for assessing the degree of wear occurring in
a machine.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant analysis
CETRIB
Analytical Ferrography (FM III)
The Analytical Ferrograph is used to prepare a Ferrogram
– a fixed slide of wear particles for microscopic
examination and photographic documentation.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Wear particles suspended in an oil sample are
magnetically precipitated into a thin glass slide,
or Ferrogram.
The microscopic analysis of the Ferrogram
provides a qualitative basis for evaluating and
visually recording the machine wear history.
It also provides specific identification of wear mechanisms and individual parts
producing patterns of incipient or catastrophic failure.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant analysis
CETRIB
Millipore Membrane Filtration
Membrane Filtration is used as an analytical toll for collecting,
identifying and measure particles in lubricating oils.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
A representative sample of oil
passes through a Millipore filter disc.
Particulate matter that exceeds the membrane
pore size will be retained on the surface.
The contaminants are analyzed.
Two simple test procedures for particulate contamination:
Particle Counting – a quantitative method for determining contamination
levels by particle counting using microscopy;
Gravimetric – a quantitative method for determining contamination level
by weight.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant analysis
CETRIB
Dialysis Method
(Soap and Mineral Oil Fraction in Lubricating Greases – DIN 51 814)
Quantify the fraction of mineral oil and soap in lubricating greases.
As the grease reaches the end of its useful life,
the percentage of retained oil decreases considerably.
Grease loses oil due to the combined action of
bleeding, oxidation and evaporation.
When half of the initial oil content in the grease structure is
lost the grease is considered to be in the end of its useful
life (approximately).
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant analysis
CETRIB
OilView (CSI Model 5100)
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Measures changes in oil quality, indicating the presence of
contamination or a chemical modification.
The results are expressed by quantitative indices:
OilLife Index (lubricant total degradation)
Chemical Index (chemical deterioration)
Contaminant Index (water, insoluble, …)
Ferrous Index
and qualitative parameters:
Large Contaminants
Large Ferrous Particles
Large Nonferrous Particles
Fluid Droplets -free water
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
OILVIEW (CSI 5100)
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Metrology Laboratory
CETRIB
Roughness and Profile Measuring Device
(HOMMELWERKE Device Model PM 2000 / T 4000)
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Surface roughness measurement, in accordance with DIN and ISO standards.
Surface topography and 3D roughness parameters
Profile measurement (max. height - 40 mm; max. length - 150 mm).
Double-flank Rolling Gear Tester (HOMMELWERKE Tester Z 2000)
Measurement of double-flank radial composite error.
Measurement of centre distance deviation.
Gear quality is assessed by accurate measurement of the radial composite
error, of the radial tooth-to-tooth composite error and of the working radial
run-out (according to DIN 3960 / AGMA 390.09).
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Reference R&D projects
CETRIB
Financed by Industrial companies
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Projecto :
Adaptor for rolling bearing tests in the Four-Ball machine
Instituições :
Período :
INEGI e SKF-ERC (Netherlands).
Dezembro de 2010 a Julho de 2011. Em curso.
Projecto :
High performance gear oils for windmill applications
Instituições :
Período :
INEGI (Portugal) e REPSOLYPF (Spain).
Novembro de 2008 a Janeiro de 2010.
Projecto :
Influence of additivation on gear micropitting.
Instituições :
INEGI (Portugal) e REPSOLYPF (Spain).
Setembro de 2007 a Julho de 2008.
Período :
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
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Unidade de Tribologia, Vibrações e Manutenção Industrial
Reference R&D projects
CETRIB
Financed by Industrial companies
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Unidade de Tribologia, Vibrações
e Manutenção Industrial
PD Gear Oils (EIGO8).
INEGI (Portugal) e FUCHS (Germany).
Abril de 2006 a Março de 2007.
SIMCable – Simulação Mecânica de Actuadores por Cabo para a
Indústria Automóvel.
INEGI (P) e FICOcables (Portugal).
Fevereiro de 2005 a Dezembro de 2009.
Simulation pratique et théorique du comportement mécanique de
dents d'engrenages et la caractérisation et suivi des conditions
d'apparition de fatigue de surface.
INEGI e RENAULT (Technocentre, France)
Fevereiro de 2005 a Dezembro de 2009.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
37 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Reference R&D projects
CETRIB
Financed by Industrial companies
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Portable Auxiliary Positioning System – PAPS.
INEGI, A. BRITO e CERN (CH).
Setembro de 1997 a Dezembro de 1998.
Análise da capacidade de carga à gripagem dos lubrificantes da
linha "GALP Transgear".
INEGI e Petrogal, SA.
Setembro de 1994 a Março de 1996.
Comportamento do óleo MOBIL Jet II no interior de um contacto
EHD.
INEGI e MOBIL OIL Portuguesa.
Janeiro de 1990 a Dezembro de 1991.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
38 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Reference R&D projects
CETRIB
Financed by the European Union
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Unidade de Tribologia, Vibrações
e Manutenção Industrial
BIOMON – Towards long-life bio-lubricants using advanced design and
monitoring tools.
ROWE Mineralolwerk (D), Shuton (E), A. BRITO (P), FERSA SA (E), MONITON
(UK), TEKNIKER (E) e INEGI (P).
Outubro de 2004 a Dezembro de 2006
EREBIO – Emission reduction from engines and transmissions substituting
harmful additives in biolubricants by triboreactive materials.
TEKNIKER (E), FUCHS (D), BAM (D), FALEX (B), RENAULT (F), BRITO (P), CRSA
(F), TARABUSI (E), FERESPE (P), IAV (D), GUASCOR (E) e INEGI (P).
Junho de 2002 a Maio de 2006.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
39 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Reference R&D projects
CETRIB
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Projecto :
Reduction of the fluid lubricant use in heavily loaded motion transmission
systems through the application of self-lubricant coatings.
Instituições :
Período :
Shuton (SP), Teer Coating (UK), A. Brito (P), Ralpe (SP), Tekniker (SP), INEGI (P).
Projecto :
ELABOMM - Endurance Limit of Actual Bearings depending on Operating
conditions, Materials and Manufacturing.
TURBOMECA (F), Hispano-Suiza (F), Renault (F), SNECMA (F),
SNR (F), Rolls Royce (UK), BMW/Rolls Royce (ex KHD, G), FAG (G), MTU (G),
INSA de Lyon (F), Instituto de Engenharia Mecânica (IDMEC - P).
Janeiro de 1993 a Dezembro de 1996.
Instituições :
Período :
Projecto :
Instituições :
Período :
Outubro de 1998 a Setembro de 2000.
Bearing with minimum lubrication.
TURBOMECA (F), Hispano-Suiza (F), SNECMA (F), GLCS (F), Rolls Royce (UK),
BMW/Rolls Royce (ex KHD, G), MTU (G), INSA de Lyon (F), Leeds University
(UK), Fundação Gomes Teixeira da UP (P).
Fevereiro de 1990 a Março de 1993.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
40 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Reference R&D projects
CETRIB
Financed by “Fundação para a Ciência e Tecnologia”
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Unidade de Tribologia, Vibrações
e Manutenção Industrial
High efficiency gears and oils for wind mill planetary gearboxes
INEGI (P).
Junho de 2010 a Maio de 2013. Em curso.
Low power loss austempered ductile iron gears
INEGI (P).
Julho de 2007 a Dezembro de 2010.
Low friction, biodegradable and low toxivity greases for rolling bearings.
INEGI (P).
Julho de 2007 a Dezembro de 2010.
Contact Fatigue model for gear micropitting prediction.
INEGI (P).
Julho de 2007 a Dezembro de 2010.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
41 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Reference R&D projects
CETRIB
Financed by “Fundação para a Ciência e Tecnologia”
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Unidade de Tribologia, Vibrações
e Manutenção Industrial
GEARSCUFF - Gear Scuffing – New Experimental and Numerical Models.
INEGI (P).
Janeiro de 2001 a Dezembro de 2003.
FARIA - Desenvolvimento de protótipos de engrenagens e juntas
homocinéticas para a indústria automóvel em ADI.
A. Brito, Ferespe, FEUP (DEMET) e INEGI.
Março de 1999 a Junho de 2001.
SEM XXI - Sistema de Exploração e Manutenção do Metro do Porto
ADTranz, EFACEC, MIIT, INETI, IST, FEUP, INEGI, EST-IPS.
Fevereiro de 1999 a Junho de 2001.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
42 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Reference R&D projects
CETRIB
Financed by “Fundação para a Ciência e Tecnologia”
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Projecto :
Instituições :
Período :
Tratamentos térmicos específicos de um ADI
visando a melhoria do desempenho de engrenagens.
INEGI, FEUP (DEMET) e CEMUP.
Outubro de 1997 a Setembro de 2000.
Análise Dinâmica de Transmissões Mecânicas Complexas.
A. BRITO, Indústria Portuguesa de Engrenagens, Lda e INEGI.
Abril de 1993 a Dezembro de 1995.
Lubrificação termoelastohidrodinâmica rugosa Previsão de avarias de fadiga e gripagem em engrenagens.
INEGI.
Dezembro de 1992 a Novembro de 1995.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
43 of 54
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Failure Analysis
CETRIB
2008 - 2010
Fractura por fadiga de duas válvulas de um motor de combustão interna.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
RIG Inc. – International Loss Adjusters. Relatório INEGI-CETRIB (TR01-08-AA), Porto, Abril de 2008, 7 páginas.
Análise sucinta do empeno de duas válvulas de um motor.
Rig Inc. – International Loss Adjusters. Relatório INEGI-CETRIB (TR03-08-AA), Porto, Setembro de 2008, 5 páginas.
Análise comparativa de desempenho tribológico de 3 materiais compósitos para chumaceiras secas de
baixa velocidade.
MARTIFER, Energy systems. Relatório INEGI-CETRIB, Porto, Maio de 2008, 13 páginas.
Fractura de um tubo flexível de alimentação de água: Observação da superfície cilíndrica lateral e da
superfície de fractura
RTS Portugal – International Loss Adjusters, Porto. Relatório INEGI/CETRIB TR01-10-AA, Porto, Fevereiro 2010, 4 páginas.
Análise de avaria de um rolamento autocompensador de rolos de um Trem de Secagem de Papel.
MIIT, Lisboa. Relatório INEGI/CETRIB, Porto, Setembro 2010, 4 páginas.
Análise de avaria de três rolamentos cónicos de um Trem de Secagem de Papel.
MIIT, Lisboa. Relatório INEGI/CETRIB, Porto, Novembro 2010, 6 páginas.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
44 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant Analysis - 2010 - 2011
CETRIB
Análise de Ferrografia e Viscosimetria de um óleo lubrificante BP TURBINOL X46 da
Turbina a Vapor – TG4.
PORTUCEL Cacia, Cacia. Relatório INEGI/CETRIB, Porto, Janeiro 2010, 8 páginas.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Análise de FTIR e Viscosimetria de Engler a um óleo sintético 5W40 do motor Diesel de um Mercedez
Sprenter 416 CDI.
REISAUTO do OESTE, LDA. Relatório INEGI/CETRIB, Porto, Fevereiro 2010, 10 páginas.
Análise de Desgaste III de um óleo lubrificante BP TURBINOL X46 da Turbina a Vapor – TG4.
PORTUCEL Cacia, Cacia. Relatório INEGI/CETRIB, Porto, Março 2010, 9 páginas.
Determinação do Teor de Água em oito amostras de óleo lubrificante provenientes de caixas de
engrenagens de Bogies.
BOMBARDIER, Porto. Relatório INEGI/CETRIB, Porto, Maio 2010, 3 páginas.
Análise de Desgaste II de um óleo lubrificante BP TURBINOL X46 da Turbina a Vapor – TG4.
PORTUCEL Cacia, Cacia. Relatório INEGI/CETRIB, Porto, Junho 2010, 7 páginas.
Análise de Ferrografia a um óleo lubrificante ENERGOL LPT 100 proveniente de um compressor de
amoníaco (J2851A).
LBC Tanquipor, Lisboa. Relatório INEGI/CETRIB, Porto, Julho 2010, 8 páginas.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
45 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant Analysis - 2010 - 2011
CETRIB
Análise de Ferrografia a um óleo lubrificante ENERGOL LPT 100 proveniente de um
compressor de amoníaco (J2851B).
LBC Tanquipor, Lisboa. Relatório INEGI/CETRIB, Porto, Agosto 2010, 5 páginas.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Análise de Ferrografia a um óleo lubrificante GALP TURBINOIL 46 proveniente de um compressor HNO3.
MIIT, Lisboa. Relatório INEGI/CETRIB, Porto, Agosto 2010, 9 páginas.
Análise de Ferrografia a um óleo lubrificante BP ENERGOL RC 100 proveniente de um compressor H2.
MIIT, Lisboa. Relatório INEGI/CETRIB, Porto, Agosto 2010, 9 páginas.
Análise de Desgaste II de um óleo lubrificante BP TURBINOL X46 da Turbina a Vapor – TG4.
PORTUCEL Cacia, Cacia. Relatório INEGI/CETRIB, Porto, Outubro 2010, 8 páginas.
Análise de Desgaste II de um óleo lubrificante BP TURBINOL X46 da Turbina a Vapor – TG4.
PORTUCEL Cacia, Cacia. Relatório INEGI/CETRIB, Porto, Novembro 2010, 8 páginas.
Análise de Ferrografia e Análise Visual de um óleo Diesel Mobil 1 5W40 de um veículo Citroen C5.
Sr. Jorge Ferreira, Porto. Relatório INEGI/CETRIB, Porto, Janeiro 2011, 8 páginas.
Análise de Desgaste II de um óleo lubrificante BP TURBINOL X46 da Turbina a Vapor – TG4.
PORTUCEL Cacia, Cacia. Relatório INEGI/CETRIB, Porto, Fevereiro 2011, 7 páginas.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
46 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Lubricant Analysis - 2010 - 2011
CETRIB
Análise de Ferrografia a um óleo lubrificante BP ENERGOL RC 100 proveniente de um
compressor H2.
MIIT, Lisboa. Relatório INEGI/CETRIB, Porto, Abril 2011, 9 páginas.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Análise de Ferrografia a um óleo lubrificante SHELL TURBO OIL 46 proveniente de um compressor HNO3.
MIIT, Lisboa. Relatório INEGI/CETRIB, Porto, Abril 2011, 9 páginas.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
47 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Publications in International Scientific Journals
CETRIB
2008 - 2011
1.
R. Martins, J. Seabra, L. Magalhães, “Austempered ductile iron (ADI) gears: Power loss, pitting
and micropitting”. WEAR, vol. 264, 2008, 838-849.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
2.
R. Martins, R. Amaro and J. Seabra, “Influence of low friction coatings on the scuffing load capacity and efficiency of
gears”. Tribology International, Vol. 41/4 (2008), pp. 234-243.
3.
J. Castro e J. Seabra, “Global and local analysis of gear scuffing tests using a mixed film lubrication model”. Tribology
International, Vol. 41/4 (2008), pp. 244-255.
4.
R. C. Martins N. F. R. Cardoso e J. H. O. Seabra, “Gear power loss performance of biodegradable low-toxicity ester
based oils”. Proc. Instn of Mech. Engrs, Part J: Journal of Engeneering Tribology, 2008, 222 (J3): 431-440.
5.
R. Martins and J. Seabra, “Micropitting performance of mineral and biodegradable ester gear oils”. Industrial
Lubrication and Tribology, Vol. 60, Nº6, 2008, pp. 286-292.
6.
R. Martins, N. Cardoso and J. Seabra, “Influence of lubricant type in gear scuffing”. Industrial Lubrication and
Tribology, Vol. 60, Nº6, 2008, pp. 299-308.
7.
E. Ciulli, L.A. Ferreira, G. Pugliese, S.M.O. Tavares, “Rough Contacts Between Actual Engineering Surfaces - Part I:
Simple Models for Roughness Description”, Wear, Vol. 264, 2008, pp. 1105-1115.
8.
G. Pugliese, S.M.O. Tavares, E. Ciulli, L. A. Ferreira, “Rough Contacts Between Actual Engineering Surfaces – Part II:
Contact Mechanics”, Wear, Vol. 264, 2008, pp. 1116-1128.
9.
V.M.M.B. da Mota, P.M.G.P. Moreira, L.A.A. Ferreira, “A study on the effects of dented surfaces on rolling contact
fatigue”, International Journal of Fatigue, Vol. 30, 2008, pp 1997-2008.
10.
R.P. Martinho, F.J.G. Silva, A.P.M. Baptista, “Cutting forces and Wear analysis of Si3N4 diamond coated tools in high
speed machining”, Vacuum 82 (2008) 1415–1420.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
48 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Publications in International Scientific Journals
2008 - 2011
CETRIB
11.
A.M. Guedes Pinto, A.G. Magalhães, F. Gomes da Silva, A.P. Monteiro Baptista, “Shear strength
of adhesively bonded polyolefins with minimal surface preparation”, International Journal of
Adhesion & Adhesives 28 (2008) 452– 456
12.
A. M. G. Pinto, A. G. Magalhães, F. Gomes da Silva, A. P. Monteiro Baptista,“Acrylic adhesives in the polyolefins
joining”, ‘Materials Science Forum, Vol. 587-588, (2008) pp 577-581
13.
Luis M. P. Durão, A. G. Magalhães, A. T. Marques, A. M. Baptista, M. Figueiredo,“Drilling of fiber reinforced plastic
laminates”, ‘Materials Science Forum, Vol. 587-588, (2008) pp 706-710
Unidade de Tribologia, Vibrações
e Manutenção Industrial
A.Aguiar Vieira, A. Monteiro Baptista, M. P. Lages Parente, R. M. Natal Jorge,“On the temperature field during
superficial grinding: an experimental study”, Int J Adv Manuf Technol (DOI 10.1007/s00170-008-1442-4), Springer,
Published online: 5 April 2008
15. Vasques, C. M. A. and Dias Rodrigues, J., “Combined feedback/feedforward active control of vibration of beams with
ACLD treatments: Numerical simulation”. Computers and Structures, 86(3-5):292-306, 2008.
14.
Vasques, C. M. A. and Dias Rodrigues, J., “Numerical and Experimental Comparison of the Adaptive Feedforward
Control of Vibration of a Beam with Hybrid Active-Passive Damping Treatments”. Journal of Intelligent Material
Systems and Structures, 19(7):805-813, 2008.
17. A.J.M. Ferreira, G.E. Fasshauer, R.C. Batra, J.D. Rodrigues, “Static deformations and vibration analysis of composite
and sandwich plates using a layerwise theory and RBF-PS discretizations with optimal shape parameter”, Composite
Structures, 86:328-343, 2008
16.
18.
A.M.G. Pinto, A.G. Magalhães, R.D.S.G. Campilho, M.F.S.F. de Moura, A.P.M. Baptista, “Single-lap joints of similar and
dissimilar adherends bonded with an acrylic adhesive”. Journal of Adhesion, Jun 2009, Vol. 85 Issue 6, p351-376, 26p;
DOI: 10.1080/00218460902880313 (AN 39768856).
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
49 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Publications in International Scientific Journals
2008 - 2011
CETRIB
19.
M. F. C. Andrade, R. P. Martinho, F. J. G. Silva, R. J. D. Alexandre, A. M. Baptista, “Influence of the
abrasive particles size in the micro-abrasion wear tests of TiAlSiN thin coatings”, Wear 267 (2009)
12-18.
20.
R. P. Martinho, M. F. C. Andrade, F. J. G. Silva, R. J. D. Alexandre, A. M. Baptista, “Micro-abrasion wear behaviour of
TiAlCrSiN nanostructured coatings”. Wear, 267 (2009) 1160-1165.
21.
A. Aguiar Vieira, A. Monteiro Baptista, M. P. Lages Parente, R. M. Natal Jorge, “On the temperature field during
superficial grinding: an experimental study”. Int. J. Adv Manuf. Technol. (2009) 40:1084-1092.
22.
F. G. Silva, M. A. Neto, A. J. S. Fernandes, F. M. Costa, F. J. Oliveira and R. Silva, “Adhesion and wear behaviour of NCD
coatings on Si3N4 by micro-abrasion tests”. Journal of Nanoscience and Nanotechnology, Vol. 9,3938 - 3943, 2009.
23.
Nuno F.R. Cardoso, Ramiro C. Martins and Jorge H.O. Seabra, “Micropitting of carburized gears lubricated with
biodegradable low-toxicity oils”. Proc. Instn of Mech. Engrs, Vol. 223, Nº J3, Part J, Journal of Engeneering Tribology,
481-495, May, 2009, doi:10.1243/13506501.JET495.
24.
N.F.R. Cardoso, R.C. Martins, J.H.O. Seabra, A. Igartua, X. Fdez-Pérez and R. Luther, “Micropitting performance of
nitriding steel gears lubricated with mineral and ester oils”. Tribology International, Vol. 42/1 (2009), pp. 77-87,
doi:10.1016/j.triboint.2008.05.010.
25.
R. C. Martins, N. F. R. Cardoso, H. Bock, A. Igartua, J. H. O. Seabra, “Power loss performance of high pressure nitrided
steel gears”. Tribology International, Vol. 42 (2009), pp. 1807-1815, doi:10.1016/j.triboint.2009.03.006.
26.
L. Ferreira, F. Didelet Pereira, “Proportional Hazards Method: Location and Procedures”, Buletinul Universitatii Petrol
– Gaze din Ploiesti, Seria Tehnica, vol. LX, nº3ª/2009, pp143-150
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
50 of 54
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Publications in International Scientific Journals
CETRIB
2008 - 2011
27.
R.A.S. Moreira and J. Dias Rodrigues, “Static and dynamic analysis of soft core sandwich panels
with through-thickness deformation”, Journal of Composite Structures (2009),
doi:10.1016/j.compstruct.2009.07.015
28.
R.A.S. Moreira and J. Dias Rodrigues, “Multilayer damping treatments: modeling and experimental assessment”,
Journal of Sandwich Structures and Materials OnlineFirst, published on June 12, 2009 as
doi:10.1177/1099636209104530
29.
J. Santos Silva, R.A.S. Moreira and J. Dias Rodrigues, “Application of cork compounds in sandwich structures for
vibration damping”, Journal of Sandwich Structures and Materials OnlineFirst, published on June 24, 2009 as
doi:10.1177/1099636209104538
30.
Tiago Cousseau, Beatriz Graça, Armando Campos, Jorge Seabra, “Influence of grease formulation on thrust bearings
power loss”. Proceedings of the. Instn of Mech. Engrs, Part J, Journal of Engeneering Tribology, 2010, Vol. 224, Nº J9,
935-946. Doi: 10.1243/13506501JET724.
31.
Tiago Cousseau, Beatriz Graça, Armando Campos, Jorge Seabra, “Experimental measuring procedure for the friction
torque in rolling bearings”. Lubrication Science (Ref. LS-09-0029-LS), 2010, Vol22:133-147. doi: 10.1002/ls.115
32.
Luís M L Magalhães, Ramiro C Martins, Cristiano Locatelli, Jorge H O Seabra, “Influence of tooth profil and oil
formulation on gear power loss”. Tribology International (JTRI_2095), Vol. 43/10 (2010), pp. 1861-1871.
doi:10.1016/j.triboint.2009.10.001
33.
José Brandão, Jorge H.O. Seabra and Jorge Castro, “Surface initiated tooth flank damage. Part II: Prediction of
micropitting and mass loss”. WEAR, vol. 268 (1-2), 2010, 13-22. doi:10.1016/j.wear.2009.07.020.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
51 of 54
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Publications in International Scientific Journals
CETRIB
2008 - 2011
34.
José Brandão, Jorge H.O. Seabra and Jorge Castro, “Surface initiated tooth flank damage. Part I:
Numerical Model”. WEAR, vol. 268 (1-2), 2010, 1-12. doi:10.1016/j.wear.2009.06.020
35.
C. M. A. Vasques, R. A. S. Moreira and J. Dias Rodrigues, “Viscoelastic Damping Technologies−
−Part I: Modeling and
Finite Element Implementation”. Journal of Advanced Research in Mechanical Engineering, 1(2): 76-95, 2010.
36.
C. M. A. Vasques, R. A. S. Moreira and J. Dias Rodrigues, “Viscoelastic Damping Technologies−
−Part II: Experimental
Identification Procedure and Validation”. Journal of Advanced Research in Mechanical Engineering, 1(2): 96-110,
2010.
37.
R.A.S. Moreira, J.D. Corte-Real and J. Dias Rodrigues, A generalized frequency-temperature viscoelastic model,
Journal of Shock and Vibration, 17:407-418, 2010
38.
R.A.S. Moreira, F.J.Q. de Melo, J. Dias Rodrigues, Static and Dynamic Characterization of Cork Compounds for
Sandwich Beam Cores, Journal of Materials Science, 45:3350-3366, 2010
39.
R.A.S. Moreira and J. Dias Rodrigues, Static and dynamic analysis of soft core sandwich panels with through-thickness
deformation, Journal of Composite Structures, 92(2):201-215, 2010
40.
R.A.S. Moreira and J. Dias Rodrigues, Multilayer damping treatments: modeling and experimental assessment, Journal
of Sandwich Structures and Materials, 12:181-198, 2010
41.
J. Santos Silva, R.A.S. Moreira and J. Dias Rodrigues, Application of cork compounds in sandwich structures for
vibration damping, Journal of Sandwich Structures and Materials, 12:495-515, 2010
42.
M.C.S. Ribeiro, L.F.P. Juvandes, J.D. Rodrigues, A.J.M. Ferreira and A.T. Marques, Behaviour of Cement and Polymer
Mortar Materials to Rapid Freeze-Thaw Cycling, Materials Science Forum Vols. 636-637 (2010), pp 1329-1335, Trans
Tech Publications.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
52 of 54
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Unidade de Tribologia, Vibrações e Manutenção Industrial
Publications in International Scientific Journals
CETRIB
2008 - 2011
43.
L. M. P. Durão, D.J.S.Gonçalves, J.M.R.S.Tavares, V.H.C. Albuquerque, A.T.Marques and A. M.
Baptista, “Drilling of carbon fibre reinforced laminates- a comparative analysis of five different
drills on thrust force, roughness and delamination”, Materials Science Forum Vols. 636-637 (2010) pp 206-213, ©
(2010) Trans Tech Publications, Switzerland, doi:10.4028/www.scientific.net/MSF.636-637.206
44.
A. M. G. Pinto, A. G. Magalhães, R. D. S. G. Campilho, M. F. S. F. de Moura, A. P. M. Baptista, “Strength prediction and
experimental validation of adhesive joints including polyethylene, carbon-epoxy and aluminium adherends”,
Materials Science Forum Vols. 636-637 (2010) pp 1157-1164, © (2010) Trans Tech Publications, Switzerland,
doi:10.4028/www.scientific.net/MSF.636-637.1157
45.
A.M.G. Pinto, A.G. Magalhães, R.D.S.G. Campilho, L.F.M. da Silva, J.A.G. Chousal, A.P.M. Baptista, “Shear modulus and
strength of an acrylic adhesive with the notched plate shear method (ARCAN) and the thick adherend shear test
(TAST)”, Materials Science Forum Vols. 636-637 (2010) pp 787-792, © (2010) Trans Tech Publications, Switzerland,
doi:10.4028/www.scientific.net/MSF.636-637.787
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Campilho RDSG, de Moura MFSF, Pinto AMG, Ramantani DA. Interlaminar fracture characterization of a carbon-epoxy
composite in pure mode II. Materials Science Forum, 2010, 636-637: p. 1518-1524.
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Campilho RDSG, de Moura MFSF, Pinto AMG, Ramantani DA, Morais JJL, Domingues JJMS. Strength prediction of
adhesively-bonded scarf repairs in composite structures under bending. Materials Science Forum, 2010, 636-637: p.
233-238.
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Pinto AMG, Campilho RDSG, de Moura MFSF, Mendes IR. Numerical evaluation of three-dimensional scarf repairs in
carbon-epoxy structures. International Journal of Adhesion & Adhesives, 2010, 30: p. 329–337.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
53 of 54
Unidade de Tribologia, Vibrações e Manutenção Industrial
Publications in International Scientific Journals
CETRIB
2008 - 2011
49.
D.F.C. Peixoto, L.A.A. Ferreira, P.M.S.T. de Castro, “Application of the Dang Van Fatigue Criterion
to the Rail/Wheel Contact Problem”, Materials Science Forum Vols. 636-637 (2010) pp 11781185, doi:10.4028/www.scientific.net/MSF.636-637.1178.
Unidade de Tribologia, Vibrações
e Manutenção Industrial
Tiago Cousseau, Beatriz Graça, Armando Campos, Jorge Seabra, “Friction torque in grease lubricated thrust ball
bearings”. Tribology International, (TRIBINT-D-09-00291R1, JTRI 2295), Vol. 44/10 (2011), pp. 523-531.
doi:10.1016/j.triboint.2010.06.013.
51. Ramiro C. Martins, Cristiano Locatelli, Jorge H. O. Seabra, Jorge M. D. Castro, “Evolution of tooth flank roughness
during gear micropitting tests”. Industrial Lubrication and Tribology, Volume 63, Nº 1, 2011, 34-45 (Ref. ILT-10-20090055), doi:10.1108/00368791111101821.
52. Luís M L Magalhães, Ramiro C Martins, Cristiano Locatelli, Jorge H O Seabra, “Influence of tooth profil on gear power
loss”. Industrial Lubrication and Tribology, Volume 63, Nº 1, 2011, 27-33 (Ref. ILT-10-2009-0057),
doi:10.1108/00368791111101812.
50.
53.
José A. Brandão, Mathilde Meheux, Jorge H. O. Seabra, Fabrice Ville, Manuel J. D. Castro, “Traction curves and
rheological parameters of fully formulated gear oils”. Proceedings of the Instn. of Mech. Engrs, Part J: Journal of
Engeneering Tribology - JET-S-10-00184 Março de 2011. doi:10.1177/1350650111405111. In press.
54.
Ramiro C. Martins, Jorge H. O. Seabra, Luís F. Ruíz-Moron, “Influence of oil formulation on gear micropitting and
power loss performance”. Proceedings of the Instn. of Mech. Engrs, Part J: Journal of Engeneering Tribology (JET-S-1000132, JET874) em Julho de 2010. doi:10.1177/1350650110397260. In press.
55.
Tiago Cousseau, Beatriz Graça, Armando Campos, Jorge Seabra, “Friction and wear in thrust ball bearings lubricated
with biodegradable greases”. Proceedings of the Instn. of Mech. Engrs, Part J: Journal of Engeneering Tribology (ref
JET-S-10-00181 - JTRI491R1) Novembro de 2010. doi:10.1177/1350650110397261. In press.
Jorge H O Seabra,
Professor Catedrático da FEUP, Director do CETRIB
54 of 54