Fiber-matrix interface failuresInterface fractures of aluminum-graphite composites under transverse loading are expected to occur within the graphite fibers, but very near the interface. Residual stresses in aluminum, reinforced with the new high modulus pitch-based fibers, are much lower than would be expected based on simple elasticity calculations. The excess stress may be relaxed by shearing internal to the fibers or at the interface rather than by plastic flow of the matrix. The internal shearing also occurs during repeated thermal cycling of these composites; the fibers are repeatedly intruded, then extruded, during repeated temperature excursions.
Document ID
19900044411
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rabenberg, Lew (Texas Univ. Austin, TX, United States)
Marcus, Harris L. (Texas, University Austin, United States)
Park, Hun Sub (Texas Univ. Austin, TX, United States)
Zong, Gui Sheng (Texas Univ. Austin, TX, United States)
Brown, Lloyd D. (Texas Univ. Austin, TX, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Composite Materials
Meeting Information
Meeting: Symposium on Metal Matrix Composites: Testing, Analysis, and Failure Modes