Fatigue Damage Monitoring of an Aluminum Joint Specimen

摘要：

　　Fatigue damage monitoring of joint structure is a significant but difficult task for structural health monitoring for the lack of suitable sensors.A coating sensor is developed in this study to monitor the fatigue damage of an aluminum joint specimen.The coating sensor is deposited on the hot spots of the specimen by anodic oxidation technology and ion plating technology.Experimental results show that the fatigue performance of the specimen is not obviously changed after the coating sensor deposited on it.When plastic deformation occurs,the adjacent measuring date of the coating sensor resistance value is increased about 6%.When fatigue crack initiates,the adjacent measuring date of the coating sensor resistance value is increased about 20.3%.And when the specimen is ruptured,the adjacent measuring date of the coating sensor resistance value is decreased about 14%.So,the change extent of the measuring date can be taken as the criterion of the fatigue damage stage.

关键词： fatigue damage aluminum joint structure monitoring coating sensor

作者: Cui Ronghong He Yuting Jing Bo Hou Bo

作者单位: Aeronautics and Astronautics College,Air Force Engineering University,Xian,710038,China

会议类型: 国际会议

会议名称: 2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)

会议地点: 上海

会议语种:英文

页码: 1-5

在线出版日期: 2014-09-24（万方平台首次上网日期，不代表论文的发表时间）