Effect Of Component Differential Hardnesses On Residual Stress And Rolling Contact Fatigue
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Effect Of Component Differential Hardnesses On Residual Stress And Rolling Contact Fatigue
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Author : Erwin V. Zaretsky
language : en
Publisher:
Release Date : 1965
Effect Of Component Differential Hardnesses On Residual Stress And Rolling Contact Fatigue written by Erwin V. Zaretsky and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Ball-bearings categories.
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.
Effect Of Component Differential Hardness On Rolling Contact Fatigue And Load Capacity
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Author : Erwin V. Zaretsky
language : en
Publisher:
Release Date : 1965
Effect Of Component Differential Hardness On Rolling Contact Fatigue And Load Capacity written by Erwin V. Zaretsky and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Bearings (Machinery) categories.
Residual Stress And Subsurface Hardness Changes Induced During Rolling Contact
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Author : David W. Reichard
language : en
Publisher:
Release Date : 1968
Residual Stress And Subsurface Hardness Changes Induced During Rolling Contact written by David W. Reichard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Roller bearings categories.
Interdisciplinary Approach To The Lubrication Of Concentrated Contacts
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Author : Pei Moo Ku
language : en
Publisher:
Release Date : 1971
Interdisciplinary Approach To The Lubrication Of Concentrated Contacts written by Pei Moo Ku and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Lubrication and lubricants categories.
Lubrication, wear, and design aspects of rolling contact bearings.
Interdisciplinary Approach To The Lubrication Of Concentrated Contacts
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Author : P. M.. Ku
language : en
Publisher:
Release Date : 1970
Interdisciplinary Approach To The Lubrication Of Concentrated Contacts written by P. M.. Ku and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1965
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Rolling Contact Fatigue Testing Of Bearings Steels
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Author : J. J. C. Hoo
language : en
Publisher: ASTM International
Release Date : 1982
Rolling Contact Fatigue Testing Of Bearings Steels written by J. J. C. Hoo and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.
Bearing Life And Failure Distribution As Affected By Actual Component Differential Hardness
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Author :
language : en
Publisher:
Release Date : 1965
Bearing Life And Failure Distribution As Affected By Actual Component Differential Hardness written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Hardness categories.
Rolling-contact fatigue tests were performed on SAE 52100 207-size deep-groove ball bearing determine the relation between bearing fatigue life and actual bearing component hardness differences and the effect of actual component hardness differences on bearing fatigue life scatter. The 207-size bearings with inner and outer races from the same heat of SAE 52100 material and with nominal Rockwell C hardnesses of 63 were assembled with SAE 52100 balls from the same heat of material tempered to nominal Rockwell C hardnesses of 60, 63, 65, and 66. Test conditions included an inner race speed of 2750 rpm, a radial load of 1320 pounds, which produced maximum Hertz stresses of 352 000 and 336 000 psi at the inner and the outer races, respectively, and a highly purified naphthenic mineral oil as the lubricant. Subsequent to testing, the bearings were disassembled, and all component hardnesses were measured. The bearings were regrouped according to their actual values of AH for Rockwell C hardness increments of 0. 5 and 1. 0, where AH is the difference between the actual hardness of the rolling elements in the bearing and the actual hardness of the inner race. The fatigue life and scatter results were compared with component hardness combinations and data previously obtained from the five-ball fatigue tester. The following results were obtained
Nasa Technical Note
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Author :
language : en
Publisher:
Release Date : 1973
Nasa Technical Note written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Aeronautics categories.
Bibliography On The Fatigue Of Materials Components And Structures
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Author : J. Y. Mann
language : en
Publisher: Elsevier
Release Date : 2013-10-22
Bibliography On The Fatigue Of Materials Components And Structures written by J. Y. Mann and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Reference categories.
Bibliography on the Fatigue of Materials, Components and Structures, Volume 3 addresses the problems associated with fatigue loadings as evident in branches of engineering and technology. Such debilitating factor also affects the human skeletal system. The book provides several references that show an increasing focus being given to the problem of fatigue in materials, components, and structures. The journals and lists of references used in the book, which discuss the subject of fatigue, are chosen to give an initial identification of citations. These sources are accompanied by computer-based documentation systems. The bibliographical data for each citation are thoroughly reviewed by checking the original bases of publication. The references in the book are arranged chronologically according to its year of publication. Major use has been made of abbreviations for the titles of journals and publications. The book can serve as a valuable tool for doctors, therapists, students, and researchers in the field of medicine.