Residual thermal stresses in a filamentary SiC Al composite

Heoung Jae Chun, Isaac M. Daniel, Shi Chang Wooh

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Residual stresses in a silicon carbide/aluminum ( SiC Al) composite introduced by the cooling process were investigated. The large mismatch of the coefficients of thermal expansion (CTE) between the silicon carbide (SCS-2) fiber and 6061 aluminum matrix tends to produce high residual stresses so that plastic flow of the matrix is inevitable during cool down. The elastoplastic behavior of the composite material was studied. The analysis is based on the successive approximation scheme with the Prandtl-Reuss plastic flow model and von Mises criterion. The three-dimensional state of residual stress in the fiber and matrix was computed. It was found that plastic flow of the matrix relieves the residual stresses in both fiber and matrix. In addition, the longitudinal stress-strain curve at room temperature under uniaxial tension and the thermal strain-temperature relationship of the composite were predicted and compared with experimental results.

Original languageEnglish
Pages (from-to)425-436
Number of pages12
JournalComposites Engineering
Volume5
Issue number4
DOIs
Publication statusPublished - 1995 Jan 1
Externally publishedYes

Fingerprint

Aluminum
Thermal stress
Silicon carbide
Residual stresses
Plastic flow
Composite materials
Fibers
Stress-strain curves
Thermal expansion
Cooling
Temperature
silicon carbide

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Residual thermal stresses in a filamentary SiC Al composite. / Chun, Heoung Jae; Daniel, Isaac M.; Wooh, Shi Chang.

In: Composites Engineering, Vol. 5, No. 4, 01.01.1995, p. 425-436.

Research output: Contribution to journalArticle

Chun, Heoung Jae ; Daniel, Isaac M. ; Wooh, Shi Chang. / Residual thermal stresses in a filamentary SiC Al composite. In: Composites Engineering. 1995 ; Vol. 5, No. 4. pp. 425-436.
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