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首页> 外文期刊>Composite Structures >Compression after impact strength of repaired GFRP composite laminates under repeated impact loading
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Compression after impact strength of repaired GFRP composite laminates under repeated impact loading

机译：反复冲击载荷下修复的GFRP复合材料层压板的冲击强度后的压缩

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摘要

During their service life, composite materials are prone to damage, which compromises their structural performance significantly. In this study, glass/epoxy composite specimens fabricated using hand layup method and further cured in a compression molding machine were cut from the laminates and subjected to low velocity impact damage in order to investigate the effects of repair. The impacted laminates were repaired by removing the damage area with a circular cutout and filled with a chopped short Kevlar/epoxy: the efficiency of the repair procedure and toughness of the repaired laminates were examined by repeated impacts on the repaired site. The residual strength of the post impacted repaired laminates is investigated by the conduction of compression after impact (CAI) loading with acoustic emission monitoring (AE) technique. The structural performance of both repaired and unrepaired laminates are compared and discussed. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在使用寿命期间，复合材料容易损坏，从而大大损害其结构性能。在这项研究中，从层压板上切下用手工铺层方法制造并在压模机中进一步固化的玻璃/环氧树脂复合材料样品，并对其进行低速冲击破坏，以研究修复效果。通过用圆形切口移除损坏的区域并用切碎的短凯夫拉尔/环氧树脂填充来修复受冲击的层压板：通过对修复部位的反复冲击来检查修复程序的效率和修复后的层压板的韧性。冲击后修复的层压板的残余强度是通过声发射监测（AE）技术通过冲击（CAI）后的压缩传导进行的。比较并讨论了修复和未修复层压板的结构性能。 （C）2015 Elsevier Ltd.保留所有权利。

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