Through-thickness compression testing of fabric reinforced composite materials: Adapted design of novel compression stamps
Through-thickness compression testing of fabric reinforced composite materials: Adapted design of novel compression stamps
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DOI：
10.1016/j.polymertesting.2016.10.024
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发表时间：
2016-12-01
期刊：
影响因子：
5.1
通讯作者：
Andrich, M.
中科院分区：
文献类型：
--
作者：
Gude, M.;Schirner, R.;Andrich, M.
由于复合材料结构生产工艺的优化，厚壁织物增强层板在传力区域的使用在过去几年有所增加。这尤其能够制造没有气孔或其他缺陷的厚层压板。众所周知，对于这些结构的稳健设计和准确的失效预测，可靠的材料性能数据是必不可少的。虽然许多试验标准都根据纤维增强材料的具体特性进行了分析和修改，但平面外压缩试验似乎已经过时了。到目前为止，已经建立了一些测试方法，但仍然没有一种标准化的测试方法来测试层合板的贯穿厚度方向的压缩。提出了一种新的方法，通过专门设计的刚性自适应压缩印章来测试织物增强聚合物的贯穿厚度压缩。对压缩载荷的施加和压缩印章的尺寸与试件尺寸的关系进行了全面的数值分析。结果表明，采用新型压缩印章设计的透厚式压缩测试仪最合适，因为可以通过实验测定织物增强聚合物的较高压缩强度。(C)2016爱思唯尔有限公司。保留所有权利。
The use of thick-walled fabric reinforced laminates in force transmission zones increased in the last years due to optimised production processes for composite structures. This enabled especially the manufacturing of thick laminates free of pores or other defects. As generally acknowledged, for a robust design and precise failure prediction of these structures reliable material property data are essential. While many test standards were analysed and modified in accordance to the specific characteristics of fibre reinforced materials, out-of-plane compression tests seem outdated. So far, some test methods are established; however, a standardised test method for compression testing in through-thickness direction of the laminate is still missing.A novel approach for through-thickness compression testing of fabric reinforced polymers with specifically designed stiffness-adapted compression stamps is presented. Comprehensive numerical analyses of the compressive load application and the dimensioning of the compression stamps in relation to the specimen size have been performed. It is shown, that the developed through-thickness compression testing device with the adapted design of the novel compression stamps is best suitable, as higher compressive strengths of fabric reinforced polymers can be experimentally determined. (C) 2016 Elsevier Ltd. All rights reserved.