航空材料学报2011，Vol.31Issue(3)：71-75,5.DOI:10.3969/j.issn.1005-5053.2011.3.014
复合材料层压板低速冲击和准静态压痕损伤等效性的研究
Study on Damage Equivalence of Composite Laminates Subjected to Low-velocity Impact and Quasi-static Indentation
闫丽 1安学锋 1蔡建丽 1张代军 1益小苏1
作者信息
- 1. 北京航空材料研究院,先进复合材料重点实验室,北京,100095
- 折叠
摘要
Abstract
Through the comparison of low-velocity impact testing and quasi-static indentation and testing, three kinds of relationship are obtained between the impact energy ( or the quasi-static indentation force) damage area and dent depth. An analysis of these relationships indicates clearly that the damage area and dent depth can be chosen as the damage parameters to set up the damage relationship between drop-weight impact and quasi-static indentation. When impact energy or quasi-static indentation force is reached at the some value, then,the knee point appears in the three kinds of relationship curves, and the knee-points of the two tests are very close and the variation tendency is identical, which indicates that quasi-static indentation tests may replace low-velocity impact tests. Under the lower impact energy ( before knee point ), quasi-static indentation force approximately is equal to the maximum force caused by impact process of corresponding impact energy. By analyzing the process of the two tests, the delamination onset load in the quasi-static indentation is lower than that in the low-velocity impact, but the tendency of the load variation is similar, which further indicates the damage equivalence of composite laminates subjected to low-velocity impact and quasi-static indentation tests.关键词
复合材料层压板/低速冲击/准静态压痕/损伤面积/损伤宽度/凹坑深度/等效性Key words
composite laminates/ low-velocity impact/ quasi-static indentation/ damage area/ damage width/ dent depth/ equivalence引用本文复制引用
闫丽,安学锋,蔡建丽,张代军,益小苏..复合材料层压板低速冲击和准静态压痕损伤等效性的研究[J].航空材料学报,2011,31(3):71-75,5.
