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首页> 美国政府科技报告 >Evaluation of the Effects of Stacking Sequence and Thickness on the Fatigue Life of Quasi-Isotropic Graphite/Epoxy Laminates
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Evaluation of the Effects of Stacking Sequence and Thickness on the Fatigue Life of Quasi-Isotropic Graphite/Epoxy Laminates

机译：堆积顺序和厚度对准各向同性石墨/环氧层压板疲劳寿命影响的评估

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摘要

A test program has been conducted in which the effect of specimen thickness on the fatigue lives of quasi-isotropic, graphite/epoxy laminates was investigated. Notched and unnotched geometries at 16, 32 and 64 ply thicknesses of a (90/45/0/-45)sub ns laminate and a (45/0/-45/90)sub ns laminate were tested in compression-compression fatigue. The fatigue life and the initiation, type and progression of damage was determined in each test. Specially designed antibuckling fixtures were utilized to prevent specimen out-of-plane motion. Interlaminar stresses were generated at straight, free edges of axially loaded laminates; these stresses were used to interpret the test results.

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