摘要
针对两种复合材料典型铺层,以试验的方式对4种不同孔隙率级差的层压板结构的层间剪切力学性能进行研究。分别对层压板结构的0°和90°方向取样,测试了层压板结构的0°和90°方向的层间剪切力学性能。基于试验结果量化分析了孔隙率与层压板结构层间剪切力学性能之间的关系。分析发现,在孔隙率为1.7%~2.3%之间,层间剪切强度下降最快;取样方向对试验件的层间剪切强度影响很小;厚度越大,层间剪切强度受孔隙率的影响越小。
The inter-laminar shear mechanical properties of laminates contained 4 level porosity,concerning 2 different typical ply sequences were experimentally investigated.The test specimens as 0 and 90 direction were made,the inter-laminar shear mechanical properties of laminate using the shear test are studied.Based on the test results,connection between porosity and inter-laminar shear mechanical properties is analyzed numerically.It is found that when porosity is among 1.7%~2.3%,ratio of inter-laminar shear strength decreasing is the biggest.The direction of specimen influence little on inter-laminar shear strength of laminate.The thickness is thicker,and the effects on inter-laminar shear strength from porosity are smaller.
作者
杨慧
刘兴宇
史俊伟
程超
Yang Hui;Liu Xingyu;Shi Junwei;Cheng Chao(Shanghai Aireraft Design and Research Institute,201210,Shanghai,China;AVIC Composite Co.,Ltd,101300,Beijing,China)
出处
《应用力学学报》
CAS
CSCD
北大核心
2020年第3期1191-1195,I0019,共6页
Chinese Journal of Applied Mechanics
基金
“民机复合材料结构超声相控阵检测与孔隙率评估技术研究”课题资助。
关键词
孔隙率
复合材料
层间剪切
力学性能
porosity
composite
inter-laminar shear
mechanical property
