A5025958462- Tribology and Wear Analysis
- Orthopaedic implants and arthroplasty
- Lubricants and Their Additives
- Biodiesel Production and Applications
- Advanced materials and composites
- Gear and Bearing Dynamics Analysis
- Tribology and Lubrication Engineering
- Advanced Combustion Engine Technologies
- Diamond and Carbon-based Materials Research
- Orthopedic Infections and Treatments
- Mechanical stress and fatigue analysis
- Total Knee Arthroplasty Outcomes
- Dental materials and restorations
- Brake Systems and Friction Analysis
- Metal Alloys Wear and Properties
- Titanium Alloys Microstructure and Properties
- Bone Tissue Engineering Materials
- Advanced machining processes and optimization
- Dental Erosion and Treatment
- Metal and Thin Film Mechanics
- Oil and Gas Production Techniques
- Reservoir Engineering and Simulation Methods
- Carbon Nanotubes in Composites
- Polymer Nanocomposite Synthesis and Irradiation
- Structural Health Monitoring Techniques
Instituto Nacional de Metrologia, Qualidade e Tecnologia
2014-2025
Shell (Netherlands)
2014
Universidade Politecnica
2007
Materia (United States)
2007
Universidade de São Paulo
2003-2007
This paper deals with an experimental study of both wear and friction responses lubricated sliding tests, considering in Stribeck diagram. Analyses concerning the coefficient by Archard equation were also done. Tests oil-bath lubricated, performed through a machine devices for rotating pin-on-disk reciprocating pin-on-plate tests. Tested specimens pins AISI52100 steel counter-bodies AISI8640 steel. Presence additives contamination lubricant oil was investigated under two mechanical loading...
Abstract During the past years, great effort has been made to improve tribological performance of ultra‐high molecular weight polyethylene (UHMWPE), considered a key polymeric material in applications requiring elevated mechanical and corrosion resistance bioinertness. This work aimed investigate role adding ceramic nanofillers aluminum oxide (Al 2 O 3 ) boron carbide (B 4 C) UHMWPE matrix order modify triboperformance polymer. The results obtained through dry reciprocating sliding tests up...
A artroplastia total do quadril (ATQ) é um procedimento cirúrgico que envolve a substituição da articulação danificada por dispositivo artificial. Apesar reconhecido sucesso clínico dos implantes de quadril, o desgaste das superfícies articulares ainda uma questões críticas influenciam seu desempenho. As combinações mais comuns materiais usadas nas próteses incluem metal‐polímero (M‐P), cerâmica‐polímero (C‐P), metal‐metal (M‐M) e cerâmica‐cerâmica (C‐C). No entanto, em relação ao projeto...
This paper deals with an experimental study of wear and friction responses from lubricated sliding. Tests were carried out using a tribometer having devices for both continuous reciprocating motion. The tested specimens pins AISI 52100 steel counter-faces 8640 steel. lubricant was paraffin mineral oil, VI 100. presence additives contamination in the investigated under two mechanical loading levels, determined by velocity/load relation. Wear evaluated terms morphology worn surfaces...
The wear and friction behaviour of self-mated silicon nitride pairs in lubricated ball-on-flat reciprocating sliding conditions is the subject present work, using diesel fuel soybean biodiesels as lubricants. results show that coefficient considerably higher for than stationary regime (about 0.14 0.06, respectively). values are range 10−8–10−9 mm3/N·m, denoting a mild regime, agreement with high lubricity these fuels assessed by ASTM D 6079 standard. observed mechanisms were mainly...
Purpose This work aims to compare the vibration behavior of roller and ball bearings operating with clean quartz‐contaminated lubricants. Wear influence on both bearing types was also compared. Design/methodology/approach Experimental tests were run in contaminated mineral oil. Contaminant quartz particles 59 μ m average size tested three concentration levels: 0.05, 0.25 0.5 g/l. Radial measured by accelerometer wear analyzed through microscopy surfaces optical spectrometry oils. Findings...
One of the factors that contribute to quality total hip prostheses is degree accuracy in manufacturing joint surfaces. The dimensional control components important because its direct influence on durability and, consequently, patients' life quality. This work presents studies form and roughness orthopedic marketed Brazil. results provide data for surfaces femoral heads acetabular indicate need improvement procedures used this control.