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Title: Analyses of residual thermal stresses in ceramic matrix composites

Abstract

Residual thermal stresses in ceramic matrix composites containing either ellipsoidal inclusions or short fibers (i.e., fibers of finite length) are considered. First, the residual stresses in ellipsoidal inclusions are uniform, and they are analyzed using a modified Eshelby model. Although closed-form analytical solutions are obtained, their formulations are formidable. When the aspect ratio of the ellipsoid is 0, 1, or infinity, simple analytical solutions can be obtained using different models, and they are in excellent agreement with those obtained from the modified Eshelby model. Second, residual stresses in short fibers are nonuniform, and they are analyzed using a modified shear lag model, in which imaginary fibers are introduced to satisfy the continuity condition at the fiber ends. The analytical solutions are compared to the experimental results.

Authors:
;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
188931
Report Number(s):
CONF-950129-11
ON: DE96004936; TRN: 96:001409
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Conference
Resource Relation:
Conference: 19. annual conference on advanced ceramics, materials and structures, Cocoa Beach, FL (United States), 9-12 Jan 1995; Other Information: PBD: 1995
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPOSITE MATERIALS; RESIDUAL STRESSES; ASPECT RATIO; FIBERS; INCLUSIONS; SHEAR; THERMAL STRESSES; MECHANICAL PROPERTIES; SILICON CARBIDES; ALUMINIUM OXIDES; GRAPHITE; ALUMINIUM; REINFORCED MATERIALS

Citation Formats

Hsueh, C H, and Becher, P F. Analyses of residual thermal stresses in ceramic matrix composites. United States: N. p., 1995. Web.
Hsueh, C H, & Becher, P F. Analyses of residual thermal stresses in ceramic matrix composites. United States.
Hsueh, C H, and Becher, P F. Sun . "Analyses of residual thermal stresses in ceramic matrix composites". United States. https://www.osti.gov/servlets/purl/188931.
@article{osti_188931,
title = {Analyses of residual thermal stresses in ceramic matrix composites},
author = {Hsueh, C H and Becher, P F},
abstractNote = {Residual thermal stresses in ceramic matrix composites containing either ellipsoidal inclusions or short fibers (i.e., fibers of finite length) are considered. First, the residual stresses in ellipsoidal inclusions are uniform, and they are analyzed using a modified Eshelby model. Although closed-form analytical solutions are obtained, their formulations are formidable. When the aspect ratio of the ellipsoid is 0, 1, or infinity, simple analytical solutions can be obtained using different models, and they are in excellent agreement with those obtained from the modified Eshelby model. Second, residual stresses in short fibers are nonuniform, and they are analyzed using a modified shear lag model, in which imaginary fibers are introduced to satisfy the continuity condition at the fiber ends. The analytical solutions are compared to the experimental results.},
doi = {},
url = {https://www.osti.gov/biblio/188931}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {12}
}

Conference:
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