复合材料损伤阻抗和损伤容限的性能表征

复合材料学报, 2004, 21(5): 140-145. doi: 10.3321/j.issn:1000-3851.2004.05.026

复合材料损伤阻抗和损伤容限的性能表征

沈真 ^1, , 张子龙 ^2, , 王进 ^3, , 杨胜春 ^4, , 叶林 ^5,

1.中国飞机强度研究所,西安,710065

2.北京航空材料研究院,北京,100095

3.沈阳飞机设计研究所,沈阳,110035

4.中国飞机强度研究所,西安,710065

5.Centre for Advanced Materials Technology,School of Aerospace,Mechanical & Mechatronic Engineering.The University of Sydney,Sydney,NSW,2006,Australia

基金项目: 国防重点实验室基金(00JS49.3.1.HK5301) 航空科研项目(01B23001)

关键词：复合材料 , 性能表征 , 损伤容限 , 损伤阻抗 , Fmax , CAIT

CHARACTERIZATION OF DAMAGE RESISTANCE AND DAMAGE TOLERANCE BEHAVIOUR OF COMPOSITE LAMINATES

复合材料结构的设计要求和使用经验提出了复合材料体系损伤阻抗和损伤容限性能表征的需求.在试验研究的基础上,本文作者指出长期以来一直使用的CAI(冲击后压缩强度)的物理意义比较含混,有时可能误导材料研究和设计选材,同时提出应分别用典型层压板静压痕力-凹坑深度曲线的最大压痕力Fmax来表征损伤阻抗性能,用凹坑深度-压缩破坏应变曲线门槛值CAIT(Compression failure strain After Impact Threshold)来表征损伤容限性能,同时给出了测试方法的建议.

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