... release, demulsibility, filterability, efficiency, and biodegradability. This information provides a basis for qualification and selection of hydraulic fluids, which is key to reliable and efficient hydraulic system performance. base oils additives performance testing specifications wear testing...

.... The molecular weight of the starting material and the irradiation source both had effects on the final properties while the fabricated form did not. Wear testing of selected groups indicated that there was a direct correlation with irradiation dose but not with the crosslink density (as calculated from...

... electron beam crosslinking wear testing orthopedic medical devices Niels A. Abt, t Werner Schneider, l Rolf Sehrn,~ and Claude B. RiekerI Influence of Electron Beam Irradiation Dose on the Properties of Crosslinked UHMWPE REFERENCE: Abt, N. A., Schneider, W., Sch6n, R. and Rieker, C. B., "Influence...

.... A prototypical, multi-specimen test apparatus was developed for use in this fretting wear test (FWT) program. The FWT apparatus was designed to generate and contain steam at temperatures up to 595 °C (1100 °F). Contact stresses over 3.45 MPa (500 psi), displacements of 0.1 mm (4 mil), and a frequency of 160 Hz...

... difference in wear between the two alloys. After the initial wear-in period, the samples with the higher carbon content exhibited a significantly lower wear rate than those with the lower carbon content. wear testing cobalt alloys hip simulator carbon composition Kenneth R. St. John, l Robert...

... morphology wear testing radiation exposure joint replacement prostheses Anuj Bellare, 1 Myron Spector, l and Robert E. Cohen 2 Analysis of Morphological Alteration Accompanying Post-Irradiation Aging in Montell 1900 Ultra-High Molecular Weight Polyethylene (UHMWPE) REFERENCE: Bellare, A., Spector, M...

... medical devices wear testing orientation softening plasma etching total joint replacements Aiguo Wang, ~ Brian Edwards, ~ Shi-Shan Yau, 1 V. Krishna Polineni, ~Aaron Essner, ~ Robert Klein, ~ D. C. Sun, 1 Casper Stark, 1 and John H. Dumbleton ~ Orientation Softening as a Mechanism of Ultra-High...

... the tribological properties are either hypothetical or based on wear testing that does not simulate the in vivo wear conditions adequately. In this paper, extensive hip simulator data are presented regarding the wear behavior of UHMWPE acetabular cups. The following sterilization treatments are considered...

..., many companies have devised their own tests to be confident of the fluids which they qualify. Additional concepts in pump testing are proposed and discussed. Fluid testing pump testing performance degradation wear testing lubrication hydraulic fluids Richard K. Tessmann 1, David J. Heer2...

... operating personnel on the use of surface engineering to solve wear problems. surface coatings surface treatments wear testing surface engineering Kenneth G. Budinski t Overview of Surface Engineering and Wear REFERENCE: Budinski, K. G., "Overview of Surface Engineering and Wear," Effect...

... temperature were 0.07 to 0.30, but longer-term transitions to higher friction occurred, and specimen-to-specimen test variations suggested that further developments of the deposition process are required to assure repeatable friction and wear results. Friction and wear tests at 300 and 700°C produced...

... coated specimens either decreased or remained constant after surface melting; however, the hardness of WC-Co coated specimens increased. Dry sliding friction and wear tests were conducted in a block-on-ring wear tester, with the coated specimens as block specimens and hardened tool steel as the ring...

.... surface coatings surface treatments wear testing fretting fretting maps low-amplitude fretting partial slip gross slip incipient gross slip scanning electron microscopy scar morphology Olof Vingsbo, 1Murugu Venkatachalam, t Martin Sundquist, 2 and Kris Schouterden 3 Low-Amplitude Fretting...

..., tribochemical reactions, and residual stress on the friction and wear behavior of these hard coatings is discussed. surface coatings surface treatments wear testing hard coatings fretting wear protection friction properties contact fatigue tribochemistry Hardy Mohrbacher, 1 Bart Blanpain, 1...

... wear testing high temperatures lubricants ceramics organometallics vapor phase lubrication sublimation bearing lubrication adsorption heat of adsorption alumina Paul J. Kennedy I and Vinod S. Agarwala I Absorption of Organic Compounds and Organometallics on Ceramic Substrates for Wear...

.../substrate properties, and coating thickness. Quantitative results obtained suggests that interface stresses can be managed with a judicious choice of coating materials, film thickness, contact parameters, and film deposition conditions. surface coatings surface treatments wear testing wear...

.... The relative proportions of cracking and plastic response seemed to vary with tool shape, material, and microstructure. surface coatings surface treatments wear testing ceramics coatings plasma-sprayed coatings scratching indentation hardness elastic modulus Arthur W. R u f f 1...

... treatments, wear testing, combustion synthesis, gas transport, cermet coatings, diffusion, coating bonding, abrasion resistance, abrasion wear Usually, wear resistance is a crucial factor in mechanical design, because many machine component failures are due to wear. One economical way to improve component...

... National Laboratory. friction testing lubrication wear testing internal combustion engine simulation tribology valves pistons cam rollers Peter. J. Blau1 A RE-'IIIOSPECTIVE SURVEY OF THE USE OF LABORATORY TF_,S'IS TO SIMULATE INTERNAL COMBUSTION ENGINE MATERIAI.~ TRIBOLOGY PROBLEMS...

... This paper examines an apparatus developed for use in the wear testing of advanced bearing materials. A brief review of the applications of polycrystalline diamond as a tribological material is given as background for the development of the apparatus. The apparatus tests materials in a sliding...