Hail impact responses and residual tensile properties of CFRP T-joints

作     者：Jianwu ZHOU Zhibin ZHAO Yaoyao SHI Xu WANG Xiaopeng CHEN Chenwei SHAN Jianwu ZHOU;Zhibin ZHAO;Yaoyao SHI;Xu WANG;Xiaopeng CHEN;Chenwei SHAN

作者机构：School of Mechanical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China School of Missile EngineeringRocket Force University of EngineeringXi’an 710038China Northwest Institution of Nuclear TechnologyXi’an 710024China School of Civil AviationNorthwestern Polytechnical UniversityXi’an 710072China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2023年第36卷第7期

页      面：430-443页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0801[工学-力学（可授工学、理学学位）] 

主　　题：Acoustic emission CFRP T-joint Deltoid Hail impact Z-pin 

摘      要：Hail impact is a major challenge encountered by aircraft in flight,and thus is a key concern in the design of damage-tolerant composite T-joints in *** study uses the Z-pinning technique(the pre-hole insertion technology)in combination with fillets of two radiuses to manufacture four types of Carbon Fiber Reinforced Polymers(CFRP)*** T-joints are then subjected to hail impact tests at two energy levels,as well as post-impact quasi-static tensile *** results show that increasing the size of the deltoid and Z-pin-induced reinforcement has a limited influence on the responses of the T-joints to hail impact,but a significant influence on their residual tensile strength after *** influences are not only dependent on the structural characteristics of the T-joints,but are also closely related to the degree of discrete damage within the T-joints caused by hail *** Emission(AE)technology is used to monitor the quantitative evolution of damage to the T-joints in a timely manner during the loading process,and helps characterize the characteristics of evolution of various types of damage over different *** research here can help design lightweight and damage-tolerant T-joints.