1 汇报安排

题 目：参加 COMADEM 2015+X CORENDE国际会议总结报告会

时 间：2015年12月14日（周一）下午2：00–2：30

地 点：交大曲江校区西五楼A328（北楼三楼东侧）

报 告 人：博1215班---常永

学号：4112001059

指导教师：訾艳阳 教授

2 参加国际会议信息

会议名称：COMADEM 2015+X CORENDE

会议日期：1-4 December, 2015

会议地点：Buenos Aires, Argentina

会议简介：The Congress intends to invite and integrate people involved in this study area in an open forum. The purpose of the congress is to encourage and facilitate exchange of information and experiences from all regions of the world. COMADEM is the opportunity to get in touch with technologies that continuously improve and enhance the quality, reliability, safety, availability, maintainability and performance of all assets (both physical and human) for as long as possible and to derive maximum benefits with minimum risk. CORENDE is a forum to discuss the improvements in the technologies used in the evaluation of components, systems and structures: non-destructive testing, personnel certification, standards, welding inspection, maintenance and structural testing. The program will provide an unrivalled opportunity to network with representatives from globally significant research centers, industry leading companies, government organizations, professional bodies and Universities.

3 参会论文信息

Rapid inspection technique for contact wire based on ultrasonic guided wave

Yong Chang, Yanyang Zi, Yu Wang, and Zhe Yang

ABSTRACT-Performance of contact wire is very important for power collection in railways, thus effective inspection techniques of contact wire are necessary to ensure railway service quality and security. As a new non-destructive testing (NDT) method, ultrasonic guided wave has the advantage of being more sensitive and faster than previous ultrasonic technique. In this paper, guided wave technique is employed to detect the defects of contact wire. Generally, dispersion curve is the prerequisite of guided wave inspection. However, due to the complex cross-section shape of contact wire, the conventional methods such as analytic method and finite element method have difficulty in calculating the dispersion curves. Thus, a special calculation method named semi-analytical finite element (SAFE) was studied to obtain the dispersion curves of contact wire. According to the dispersion curves, several tests were carried out for detecting artificial defects at different positions of contact wire to verify the validity of the results of the SAFE. The experimental results prove the correctness of the SAFE method for calculating the dispersion curves of the contact wire. Meanwhile, the results show that the minimum crack depth of guided wave can be detected is 0.5mm.

欢迎有兴趣的同学届时听讲座。