Download or read book Factors that Affect Rolling Contact Fatigue Life of Ceramics and Rolling Contact Fatigue Life of Ceramic Balls and Rollers written by Y. Nishihara and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rolling contact fatigue life of ceramics for rolling bearings has improved remarkably in recent years, and is now superior to that of bearing steels. This paper describes experiments to investigate the influence of manufacturing process variables on rolling contact fatigue life and compares the rolling contact fatigue life of current improved ceramics with bearing steels.
Download or read book ASME Technical Papers written by and published by . This book was released on with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rolling contact Fatigue Life of a Crystallized Glass Ceramic written by Thomas L. Carter and published by . This book was released on 1960 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paper written by and published by . This book was released on 1990 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advancements in Materials Processing Technology Volume 1 written by Rina Sahu and published by Springer Nature. This book was released on with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rolling Contact Fatigue Tests of Ceramics by Various Methods written by Wataru Kanematsu and published by . This book was released on 2015 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of rolling contact fatigue (RCF) tests by balls-on-rod (BOR) and two-roller methods have been compared to those by the balls-on-flat (BOF) method by using three different silicon nitride grades. Two were bearing grade (BG) and one was a general purpose (GP) grade. For a GP material, there was not much difference between the results of BOR and those of BOF, and the observations of a spalled region by BOR suggested similar spalling behavior to BOF. Meanwhile, for BG materials, most tests were terminated without spalling, but grooves, whose likely cause is inferred to be insufficient lubrication, were formed. As for the lifetime in BOR, however, the results for BG materials were much longer than those of the GP, demonstrating that the BOR result is qualitatively consistent with that of BOF, where instead most specimens failed in RCF by spalling or peeling. In the two-roller method, tests of a limited number of specimens were operated at high slip ratios of 10 % during longer cycles under low contact stress, and wear was predominant, suggesting the potential of providing the information on wear behavior rather than RCF. The results suggest that the two-roller method could differentiate the BG materials in terms of wear behavior. Considering these results, both the BOF and the BOR are applicable to distinguish BG and GP materials in terms of fatigue resistance. In particular, the BOF is judged to be more suitable for comparison of the RCF behavior of BG materials, which are commonly tested under higher contact stresses.
Download or read book Rolling Contact Fatigue of Ceramics written by Y. Wang and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: High hardness, low coefficient of thermal expansion and high temperature capability are properties also suited to rolling element materials. Silicon nitride (Si3N4) has been found to have a good combination of properties suitable for these applications. However, much is still not known about rolling contact fatigue (RCF) behavior, which is fundamental information to assess the lifetime of the material. Additionally, there are several test techniques that are employed internationally whose measured RCF performances are often irreconcilable. Due to the lack of such information, some concern for the reliability of ceramic bearings still remains. This report surveys a variety of topics pertaining to RCF. Surface defects (cracks) in Si3N4 and their propagation during RCF are discussed. Five methods to measure RCF are then briefly overviewed. Spalling, delamination, and rolling contact wear are discussed. Lastly, methods to destructively (e.g., C-sphere flexure strength testing) and non-destructively identify potential RCF-limiting flaws in Si3N4 balls are described.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1993 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Component Differential Hardnesses on Residual Stress and Rolling contact Fatigue written by Erwin V. Zaretsky and published by . This book was released on 1965 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Residual stress measurements were made in the zone of resolved shearing stress on five SAE 52100 upper test ball specimens with an average Rockwell C hardness of 63.2. These upper test ball specimens were run against lower test balls of nominal Rockwell C hardnesses of 60, 62, 63, 65, and 66 until either ft conditions included an or both components failed because of fatigue. Test conditions included an average race temperature of 150 F, a maximum (Hertz) compressive stress of 800,000 psi, and a highly purified naphthenic mineral oil lubricant. Fatigue lives of the upper test balls were compared with measured residual stresses in the subsurface zone of resolved shearing stress. The compressive residual stress induced in the upper test ball during running is a function of delta H, the hardness of the lower test balls minus the upper test ball hardness An interrelation is indicated among differences in com- ponent hardness, induced compressive residual stress, and fatigue life. Measured values of compressive residual stress within the zone of resolved maximum shearing stress ranged from 178,000 and 294,000 psi. The apparent maximum residual stress occurs above where delta H = 0.
Download or read book Rolling element Fatigue Life of Silicon Nitride Balls written by Richard Jay Parker and published by . This book was released on 1974 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of Progress in Quantitative Nondestructive Evaluation written by Donald O. Thompson and published by . This book was released on 1982 with total page 1176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Examination of the Rolling contact Fatigue Process in a Crystallized glass Ceramic written by Shelly Harrell and published by . This book was released on 1963 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Lubrication Technology written by and published by . This book was released on 1967 with total page 1432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1991 with total page 1588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influences of Surface Quality on the Rolling Contact Fatigue Behaviour of Ceramics written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selection and Use of Wear Tests for Ceramics written by C. S. Yust and published by ASTM International. This book was released on 1988 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symposium (see title) held May 1987, Cincinnati, OH. Papers on mechanical wear of ceramic materials and its measurement. Annotation copyright Book News, Inc. Portland, Or.
Download or read book Rolling element Fatigue Life of Ausformed M 50 Steel Balls written by Richard Jay Parker and published by . This book was released on 1968 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
