Journal Published Online: 01 September 1993
Volume 15, Issue 3

Differences in Fatigue and Fracture Behavior of Woven-Mat and Acrylic Binder SCS-6/Ti-15-3 Composites



This paper summarizes testing performed on SCS-6/Ti-15-3 composites that were fabricated using two different methods of fiber alignment. One composite used an acrylic binder to hold the fibers straight and parallel to each other while the second method used a Ti-6-4 ribbon weave which produced a SCS-6 woven fiber mat. Fatigue test results indicated that the woven mat composite was more likely to develop Mode I cracks which would propagate through the specimen failing fibers. This led to catastrophic failures. Conversely, the acrylic binder composite was subject to multiple matrix cracking in which fibers did not fail, but bridged the cracks and resulted in longer fatigue lives.

Author Information

Harmon, DM
McDonnell Douglas Aerospace, St. Louis, MO
Finefield, MA
McDonnell Douglas Aerospace, St. Louis, MO
Harter, JA
Wright Laboratories, Wright-Patterson Air Force Base, OH
Buchanan, DL
McDonnell Douglas Aerospace, St. Louis, MO
Pages: 9
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Stock #: CTR10374J
ISSN: 0884-6804
DOI: 10.1520/CTR10374J