Strength of a C-Sphere flexure specimen

A. A. Wereszczak, W. Wang, O. M. Jadaan, M. J. Lance, H. T. Lin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

A "C-Sphere" flexure strength specimen geometry was conceived and developed to measure a relevant strength of bearing-grade Si3N 4 balls and to relate that to surface-located strength-limiting flaws and to ultimately link those flaw populations to rolling contact fatigue performance. A slot was machined into the balls to a set depth to produce the C-sphere geometry. C-sphere specimens were then diametrally compressed to produce a monotonically increasing flexure or hoop tensile stress at their surface that caused their fracture. The strength was determined using the combination of failure load, C-sphere geometry, and FEA, and the stress field was used to determine C-sphere effective areas and effective volumes as a function of Weibull modulus. A description of the specimen and the aforementioned analysis are provided and a comparison of C-sphere flexure strength distributions of two bearing grade Si3N4 materials (NBD200 and SN101C) is given.

Original languageEnglish
Title of host publicationMechanical Properties and Performance of Engineering Ceramics and Composites II - A Collection of Papers Presented at the 30th International Conference on Advanced Ceramics and Composites
Pages281-293
Number of pages13
Edition2
StatePublished - 2006
EventMechanical Properties and Performance of Engineering Ceramics and Composites Symposium - 30th International Conference on Advanced Ceramics and Composites - Cocoa Beach, FL, United States
Duration: Jan 22 2006Jan 27 2006

Publication series

NameCeramic Engineering and Science Proceedings
Number2
Volume27
ISSN (Print)0196-6219

Conference

ConferenceMechanical Properties and Performance of Engineering Ceramics and Composites Symposium - 30th International Conference on Advanced Ceramics and Composites
Country/TerritoryUnited States
CityCocoa Beach, FL
Period01/22/0601/27/06

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