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Title: Reduction of thermal residual stresses in advanced metallic composites based upon a compensating/compliant layer concept

Abstract

A detailed parametric study is carried out to investigate the viability of the recently proposed compensating/compliant layer concept (i.e., the insertion of an interface material between SiC fiber and metal matrix to reduce or eliminate the residual stress buildup during cooling of the composite). The study uses a finite-element concentric cylinder model with generalized plane strain end conditions and free boundary conditions, assuming the SiC fiber to be isotropic and linear elastic and the compliant layer cylinder and matrix (Ti3Al + Nb) cylinder to be isotropic and bilinear elastic-plastic. Results show that a compensating/compliant layer acts to reduce in-plane residual stresses within the fiber and the matrix and, therefore, reduces radial cracking. However, this decrease in in-plane stresses is accompanied by an increase of longitudinal stress, which may initiate longitudinal cracking. 16 refs.

Authors:
; ;  [1]
  1. NASA, Lewis Research Center, Cleveland, OH (United States) Toledo, University, OH (United States)
Publication Date:
OSTI Identifier:
7162433
Resource Type:
Journal Article
Journal Name:
Journal of Composite Materials; (United States)
Additional Journal Information:
Journal Volume: 26:9; Journal ID: ISSN 0021-9983
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; RESIDUAL STRESSES; THERMAL STRESSES; COMPOSITE MATERIALS; NIOBIUM; SILICON CARBIDES; TITANIUM ALLOYS; BOUNDARY CONDITIONS; COOLING; CRACK PROPAGATION; FINITE ELEMENT METHOD; INTERFACES; INTERMETALLIC COMPOUNDS; MATHEMATICAL MODELS; MATRIX MATERIALS; METALS; MITIGATION; PARAMETRIC ANALYSIS; REINFORCED MATERIALS; THERMAL EXPANSION; ALLOYS; CARBIDES; CARBON COMPOUNDS; ELEMENTS; EXPANSION; MATERIALS; NUMERICAL SOLUTION; SILICON COMPOUNDS; STRESSES; TRANSITION ELEMENTS; 360603* - Materials- Properties

Citation Formats

Arnold, S M, Arya, V K, and Melis, M E. Reduction of thermal residual stresses in advanced metallic composites based upon a compensating/compliant layer concept. United States: N. p., 1992. Web. doi:10.1177/002199839202600904.
Arnold, S M, Arya, V K, & Melis, M E. Reduction of thermal residual stresses in advanced metallic composites based upon a compensating/compliant layer concept. United States. https://doi.org/10.1177/002199839202600904
Arnold, S M, Arya, V K, and Melis, M E. 1992. "Reduction of thermal residual stresses in advanced metallic composites based upon a compensating/compliant layer concept". United States. https://doi.org/10.1177/002199839202600904.
@article{osti_7162433,
title = {Reduction of thermal residual stresses in advanced metallic composites based upon a compensating/compliant layer concept},
author = {Arnold, S M and Arya, V K and Melis, M E},
abstractNote = {A detailed parametric study is carried out to investigate the viability of the recently proposed compensating/compliant layer concept (i.e., the insertion of an interface material between SiC fiber and metal matrix to reduce or eliminate the residual stress buildup during cooling of the composite). The study uses a finite-element concentric cylinder model with generalized plane strain end conditions and free boundary conditions, assuming the SiC fiber to be isotropic and linear elastic and the compliant layer cylinder and matrix (Ti3Al + Nb) cylinder to be isotropic and bilinear elastic-plastic. Results show that a compensating/compliant layer acts to reduce in-plane residual stresses within the fiber and the matrix and, therefore, reduces radial cracking. However, this decrease in in-plane stresses is accompanied by an increase of longitudinal stress, which may initiate longitudinal cracking. 16 refs.},
doi = {10.1177/002199839202600904},
url = {https://www.osti.gov/biblio/7162433}, journal = {Journal of Composite Materials; (United States)},
issn = {0021-9983},
number = ,
volume = 26:9,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}