SYMPOSIA PAPER Published: 01 January 1987
STP24369S

Damage Tolerance of Toughened Resin Graphite Composites

Source

The weight savings potential of graphite composites for wing structures in transport aircraft is directly related to design strength values. These values must reflect the influence of defects, notches, impact damage, and environmental conditions on material strength. Within the last several years, improvements have been made in the constituents of graphite/epoxy composites. Fiber tensile strengths have increased and tougher resins have been formulated. Tension, impact, and compression tests were conducted on several of these advanced materials to evaluate their performance. Based on these tests, it was concluded that increased values for design allowable tensile strength can be obtained. However, similar increases in compressive strength allowables cannot be obtained until additional improvements are made to resin matrices.

Author Information

Griffin, CF
Lockheed-California Co., Burbank, CA
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Details
Developed by Committee: D30
Pages: 23–33
DOI: 10.1520/STP24369S
ISBN-EB: 978-0-8031-5002-7
ISBN-13: 978-0-8031-0934-6