航空学报 > 2004, Vol. 25 Issue (6): 573-576

复合材料层压板冲击后压缩剩余强度的统计分析与可靠性评估

陈普会1, 沈真2, 聂宏1   

  1. 1. 南京航空航天大学飞行器系 江苏南京?? 210016;2. 西北工业大学飞机系 陕西西安?? 710072
  • 收稿日期:2003-10-13 修回日期:2004-02-12 出版日期:2004-12-25 发布日期:2004-12-25

Statistical Analysis of Post-Impact Compression Strength of a Composite Laminate and Reliability Evaluation

CHEN Pu-hui1, SHEN Zhen2, NIE Hong1   

  1. 1. College of Aerospace Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016;2. Aircraft Strength Research Institute of China, Xi'an 710065
  • Received:2003-10-13 Revised:2004-02-12 Online:2004-12-25 Published:2004-12-25

摘要: 通过对T300/5405复合材料层压板的冲击后压缩强度试验数据的统计分析,指出冲击后压缩剩余强度符合Weibull分布。在此基础上,通过引入冲击威胁的概念,对T300/5405复合材料层压板进行了冲击损伤容限可靠性分析。研究表明,通过在可靠性分析中引入了冲击威胁的概念,可以较充分地发挥复合材料层压板的损伤容限性能。

关键词: 复合材料, 冲击后压缩强度, Weibull分布, 冲击威胁, 可靠性

Abstract: In this paper, the test data of post-impact compression strength are statistically analyzed for T300/5405 composite laminate. It is indicated that a two-parameter Weibull distribution can be used to describe the data of the post-impact compression strength. Afterwards, the damage tolerance reliability evaluations are carried out for the T300/5405 composite laminate by introducing the concept of impact threats. The results indicate that the damage tolerance behavior of composite laminates can be taken fully by taking the impact threats into consideration in the reliability analysis.

Key words: composite, post-impact compression, Weibull distribution, impact threat, reliability