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首页> 美国政府科技报告 >Certification of Composite Aircraft Structures Under Impact, Fatigue and Environmental Conditions. Part III. Environmental Effects on Compressive Strength.
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Certification of Composite Aircraft Structures Under Impact, Fatigue and Environmental Conditions. Part III. Environmental Effects on Compressive Strength.

机译：复合飞机结构在冲击，疲劳和环境条件下的认证。第三部分。环境对抗压强度的影响。

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The compressive behavior of a graphite/epoxy (AS-3501-6) composite system is studied here experimentally and analytically. First, a test method is developed using a flat-end specimen. Tests are then performed for six (6) different composite laminates. In each case, the variation of the test temperature ranges from -12 C to 121 C while the variation of the moisture content in the specimens ranges from dry to saturated-wet. Two cases of dry/wet/dry conditioned specimens are also studied. An analytical model which is based on the concept of microbuckling is developed to predict the compression strength of unidirectional laminates. The analytical results compare well with experiment. The rule-of-mixture method is shown to predict the compressive strength of laminates of complex lay-ups. (Author)

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