The Effect of Multiple Compliant Layers at the Fiber-Matrix Interface on Residual Thermal Stresses in Metal Matrix Composites

by Marek-Jerzy Pindera, Univ of Virginia, Charlottesville, United States,
Alan D. Freed, Univ of Virginia, Charlottesville, United States,

Document Type: Proceeding Paper

Part of: Engineering, Construction, and Operations in Space III


The large mismatch in thermoelastic properties of the fiber and matrix phases in advanced metal matrix composites, coupled with high consolidation temperatures, produces severe residual stresses that can be large enough to initiate microcracks in the matrix phase adjacent to the fiber/matrix interface. Previous investigations have demonstrated that the use of a compliant interfacial layer between fiber and matrix phases has the potential for reducing these residual stresses. In this paper, the influence of multiple compliant layers in reducing residual thermal stresses is investigated.

Subject Headings: Fiber reinforced composites | Composite materials | Thermal analysis | Stress analysis | Matrix (mathematics) | Construction materials | Residual stress | Thermal loads

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