天津工业大学学报2024，Vol.43Issue(4)：24-29,35,7.DOI:10.3969/j.issn.1671-024x.2024.04.005
芳纶编织物在高载荷下的使用寿命预测
Prediction of service life of aramid woven fabric under high load
摘要
Abstract
The semi-empirical method is used to predict the service life of aramid tape in parachute,but lacks of theoretical basis.In this paper,the creep behavior and impact resistance of type 25-600 Aramid 1414 tape under high loads were used to fit the curve of the load size and creep breaking time and the curve of the impact strength and the number of impact tests,respectively,which can be used to predict the service life of aramid tape under high load,and the orientation and crystallinity of the tape before and after the test were measured.The results show that there is a functional relationship between the load and the logarithm of creep time during the creep process,and the fitting equations of single-layer and single-loop two-layer tapes are lnt=33.65-0.33σ and lnt=32.45-0.31σ,respectively.The slope and intercept of the impact model are twice those of the creep model.When the sample is under the same load,the relation between the logarithm of creep breaking time and the number of impact tests is lnt=An-B,and the number of impact tests can be used to predict the creep breaking time of the tape,and vice versa.The creep and orientation and crystallinity of Aramid 1414 tape before and after impact tests indicate that under the same load,creep and impact have the same damage effect on the tape,which further proves that there is a high correlation between the creep and impact properties of type 25-600 Aramid 1414 tape.关键词
芳纶编织物/芳纶绳带/蠕变/高载荷/拟合模型Key words
aramid woven fabric/aramid tape belt/creep/high load/fitting model分类
化学工程引用本文复制引用
宋俊,石宇飞,章琳玲,李传盟,王林锋,王梦蝶..芳纶编织物在高载荷下的使用寿命预测[J].天津工业大学学报,2024,43(4):24-29,35,7.基金项目
航空科学基金项目(201929010003) （201929010003）
