Journal Published Online: 01 January 1991
Volume 13, Issue 3

A Study of Failure Characteristics in Thermoplastic Composite Material at 250°F (121°C)

CODEN: JCTRER

Abstract

A study was conducted to investigate the failure characteristics of thermoplastic composite graphite/polyetheretherketone (Gr/PEEK) at 250°F (121°C). The stacking sequences of specimens used in the study were [0°]16, [90°]16, [±45°]45, and [0°/±45°/90°]2s. Specimens of the first three ply layups, namely, [0°]16, [90°]16, and [±45°]4s were used to determine the basic stress-strain data at 250°F (121°C). In addition, specimens containing a hole (one-third diameter-to-width ratio) corresponding to all the four stacking sequences were manufactured to determine the stress-strain response, the progression of failure, and ultimate tensile strengths. Testing the specimens with ply layups of [±45°]4s and [0°/±45°/90°]2s containing ±45° plies was complicated by the development of high strains, thereby causing the strain gages to peel off during tests.

Author Information

Fisher, JM
Robins Air Force Base, GA
Palazotto, AN
Air Force Institute of Technology, Wright-Patterson Air Force Base, OH
Sandhu, RS
Structural Concepts Branch, Structures Division, Wright Laboratory, Wright-Patterson Air Force Base, OH
Pages: 9
Price: $25.00
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Stock #: CTR10220J
ISSN: 0884-6804
DOI: 10.1520/CTR10220J