Role of matrix resin in delamination onset and growth in composite laminates
Role of matrix resin in delamination onset and growth in composite laminates
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DOI：
10.1016/0266-3538(88)90043-7
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发表时间：
1988
影响因子：
9.1
通讯作者：
L. Ye
中科院分区：
文献类型：
--
作者：
L. Ye
本文研究了基体树脂对复合材料层合板分层的发生和发展的影响。采用了两种基体性质不同的石墨/环氧复合材料（T300/648-BF 3/MEA和T300/634-DDS）。研究采用两种不同的铺层方式，即[（±30）3/90 2] s和[（±45）2/O2/90 2] s。使用面外云纹干涉法和二碘甲烷增强X射线照相术检测分层。提出了一个强度准则的分层开始和评估的基体性能对分层开始的影响。提出了一种改进的能量释放率模型来表征分层扩展，重点评估了分层阻力曲线和分层扩展速率的行为。结果表明，基体强度和塑性的提高提高了复合材料层合板在静载下发生分层的临界载荷和抗分层能力，显著降低了循环载荷下的分层扩展速率。
The effect of the matrix resin on the onset and growth of delamination in composite laminates has been investigated in this work. Two kinds of graphite/epoxy composite materials (T300/648-BF 3/MEA and T300/634-DDS) with quite different matrix properties have been used. The study was done on two different layups,[(±30) 3/90 2] s and [(±45) 2/O 2/90 2] s. Out-of-plane moiré interferometry and diiodomethane-enhanced X-radiography were used to detect delamination. A strength criterion for the onset of delaminatoin is proposed and an assessment made of the effect of matrix properties on delamination onset. A modified energy release rate model is presented for characterization of delamination growth emphasis being placed on assessing the behavior of delamination resistance curves and delamination growth rate. The results indicate that enhancement of matrix strength and ductility increases the critical loads for delamination onset and delamination resistance in the composite laminates under static loading, and significantly reduces the delamination growth rate under cyclic loading.