COMPRESSIVE FAILURE OF NOTCHED CARBON-FIBER COMPOSITES
COMPRESSIVE FAILURE OF NOTCHED CARBON-FIBER COMPOSITES
复制标题
DOI：
10.1098/rspa.1993.0014
复制
发表时间：
1993-02-08
期刊：
影响因子：
--
通讯作者：
FLECK, NA
中科院分区：
文献类型：
--
作者：
SOUTIS, C;CURTIS, PT;FLECK, NA
本文对碳纤维/环氧树脂层合板的压缩断裂性能进行了研究。报告了各种“铺层”的无缺口和有缺口强度，并根据现有的强度理论解释结果。在所有情况下，我们发现，压缩破坏是由塑性微屈曲的0度层。对于无切口层合板，失效应变与铺层结构无关，这表明临界失效应变或最大应变准则可以充分预测失效点。在缺口板的试验中，检查了从单个孔的边缘开始的损伤的增长。对于缺口材料，破坏强度和破坏时的损伤区尺寸支持Soutis，Fleck和Smith模型的预测。
We present an investigation into the compressive fracture properties of carbon fibre/epoxy laminates. Unnotched and notched strengths are reported for a wide range of 'lay-ups', and results are interpreted in terms of existing theories of strength. In all cases, we find that compressive failure is governed by plastic microbuckling of the 0-degrees plies. For unnotched laminates, the failure strain is independent of lay-up configuration, suggesting that a critical strain to failure, or maximum strain criterion can predict the failure point adequately. In tests on notched panels, the growth of damage from the edge of a single hole is examined. For notched materials, the failure strength and damage zone size at failure support the prediction of the Soutis, Fleck and Smith model.