Reliability Analysis of Uniaxially Ground Brittle Materials-Reference-Cited by-同舟云学术

Reliability Analysis of Uniaxially Ground Brittle Materials

Published:1996-10-01 Issue:4 Volume:118 Page:863-871
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Salem J. A.¹,Nemeth N. N.¹,Powers L. M.²,Choi S. R.²

Affiliation:

1. NASA Lewis Research Center, Cleveland, OH 44135

2. Department of Civil Engineering, Cleveland State University, Cleveland, OH 44135

Abstract

The fast fracture strength distribution of uniaxially ground, alpha silicon carbide was investigated as a function of grinding angle relative to the principal stress direction in flexure. Both as-ground and ground/annealed surfaces were investigated. The resulting flexural strength distributions were used to verify reliability models and predict the strength distribution of larger plate specimens tested in biaxial flexure. Complete fractography was done on the specimens. Failures occurred from agglomerates, machining cracks, or hybrid flaws that consisted of a machining crack located at a processing agglomerate. Annealing eliminated failures due to machining damage. Reliability analyses were performed using two and three-parameter Weibull and Batdorf methodologies. The Weibull size effect was demonstrated for machining flaws. Mixed mode reliability models reasonably predicted the strength distributions of uniaxial flexure and biaxial plate specimens.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/118/4/863/5497066/863_1.pdf

Reference10 articles.

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3. Batdorf S. B. , and CroseJ. G., “A Statistical Theory for the Fracture of Brittle Structures Subjected to Nonuniform Polyaxial Stresses,” ASME Journal of Applied Mechanics, Vol. 41, 1974, pp. 459–464.

4. Batdorf S. B. , and HeinischH. L., “Weakest Link Theory Reformulated for Arbitrary Fracture Criterion,” Journal of the American Ceramic Society, Vol. 61, No. 7–8, 1978, pp. 355–358.

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