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SYMPOSIA PAPER Published: 01 January 1989

STP22860S

Fiber-Matrix Interface Failures

Source

Interface 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.

Author Information

Park, HS

Center for Materials Science and Engineering, University of Texas at Austin, Austin, TX

Zong, GS

Center for Materials Science and Engineering, University of Texas at Austin, Austin, TX

Brown, LD

Center for Materials Science and Engineering, University of Texas at Austin, Austin, TX

Rabenberg, L

Center for Materials Science and Engineering, University of Texas at Austin, Austin, TX

Marcus, HL

Center for Materials Science and Engineering, University of Texas at Austin, Austin, TX

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Details

Developed by Committee: D30

Pages: 270–279

DOI: 10.1520/STP22860S

ISBN-EB: 978-0-8031-5089-8

ISBN-13: 978-0-8031-1270-4