Damage Kinetics of Glass/Epoxy Composite Materials Under Dynamic Compression
Damage Kinetics of Glass/Epoxy Composite Materials Under Dynamic Compression
复制标题
DOI：
10.1177/0021998308098336
复制
发表时间：
2009-05-01
影响因子：
2.9
通讯作者：
Choukri, S.
中科院分区：
文献类型：
--
作者：
Tarfaoui, M.;Neme, A.;Choukri, S.
通过对单层玻璃纤维增强复合材料在200-2000 s（-1）应变率下的应变率敏感性试验，研究了玻璃纤维增强复合材料的应变率敏感性。压缩材料的性能是通过测试不同取向的层合板系统从低到高的应变率。在平面内方向上测试立方体几何形状的样品的七个纤维取向，0度、+/-20度、+/-30度、+/-45度、+/-60度、+/-70度和90度。初步的压缩应力-应变与应变率的数据表明，动态材料强度随应变率的增加而增加。试验表明，材料对动态载荷和纤维方向有很强的敏感性。对于面内试验，有一个过渡的应变速率和过渡的纤维取向的趋势，反映了应变速率和纤维取向的实验中观察到的依赖关系。损伤调查表明，故障事件不同，并取决于复合材料顺序铺层。
The strain rate sensitivity of glass fiber-reinforced polymer is studied by testing a single laminate configuration at strain rates of 200-2000 s(-1). The compressive material properties are determined by testing the laminate systems with different orientations from low to high strain rates. Samples of cubic geometry are tested in in-plane direction for seven fiber orientations, 0 degrees, +/- 20 degrees, +/- 30 degrees, +/- 45 degrees, +/- 60 degrees, +/- 70 degrees, and 90 degrees. Preliminary compressive stress-strain vs. strain rates data obtained show that the dynamic material strength increases with increasing strain rates. The tests show a strong material sensitivity to dynamic loading and fiber direction. For in-plane tests, there is a transitional strain rate and a transitional fiber orientation in the trends, reflecting the dependencies on strain rate and fiber orientation observed in experiments. Damage investigations have revealed that the failure events differ and depend on composite sequence lay-ups.