湿热环境下聚酰亚胺复合材料的拉脱性能研究

• 作者: 白桃林 陈普会 孔斌 张雅会 蒋坤 甘建
• 来源期刊: 航空工程进展
• 学科: 航空航天
• 关键词: 聚酰亚胺复合材料 机械连接 拉脱强度 湿热环境 数值仿真
• 年，卷（期）: 2022,（5）
• 所属期刊栏目: 论文
• 页码范围: 78-85
• 页数: 7页
• 分类号: V214.8,TB33
• 语种: 中文
• DOI: 10.16615/j.cnki.1674-8190.2022.05.08

摘要

Composite structures have been widely used in the field of aerospace. In order to study the mechanical properties of composites in hygrothermal environments，the pull-through tests of a type of polyimide composite laminates are carried out under three test environments：cold temperature dry（CTD），room temperature dry （RTD）and elevated temperature wet（ETW）. The numerical simulation analysis of the RTD test process is car⁃ ried out. The pull-through strength and failure mode of two typical laminates are obtained by experiment，and the failure load is predicted by simulation analysis. The results show that the type of polyimide composites have excel⁃ lent thermal stability. The pull-through strength of the composites under CTD condition is 8.1%~9.0% higher than that under RTD condition，and the pull-through strength of the composites under ETW condition is equivalent to that under RTD condition. The pull-through strength of（30/60/10）ply is slightly higher than（40/50/10）ply.