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>Damage Characteristics and Residual Strength of Composite Sandwich Panels Impacted with and Without Compression Loading
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Damage Characteristics and Residual Strength of Composite Sandwich Panels Impacted with and Without Compression Loading
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机译:承受和不承受压缩载荷的复合夹芯板的损伤特性和残余强度
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摘要
The results of an experimental study of the impact damage characteristics and residual strength of composite sandwich panels impacted with and without a compression loading are presented. Results of impact damage screening tests conducted to identify the impact-energy levels at which damage initiates and at which barely visible impact damage occurs in the impacted facesheet are discussed. Parametric effects studied in these tests include the impactor diameter, dropped-weight versus airgun-launched impactors, and the effect of the location of the impact site with respect to the panel boundaries. Residual strength results of panels tested in compression after impact are presented and compared with results of panels that are subjected to a compressive preload prior to being impacted.
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