土木院:Structural Health Monitoring of Civil Engineering Structures

题  目:Structural Health Monitoring of Civil Engineering Structures
    报告人:Hua-Peng Chen 陈华鹏 教授  英国格林威治大学
    时  间:2018年3月6日(周二)上午9:00
    地  点:科学馆516
    报告人简介:
        陈华鹏教授于1998年获英国格拉斯哥大学结构工程博士,是英国格林威治大学土木工程首席教授,创新与智能结构研究中心主任。长期从事结构健康监测、结构可靠度与性能评估等方面研究,主持包括英国研究理事会、皇家工程院等资助科研项目20余项,发表160多篇国际期刊和会议论文,是英国土木工程师学会会士(Fellow),高等教育学会会士,特许工程师。
Abstract:
          The vibration-based damage identification methods show great promise, in particular in the application to remote damage identification for large engineering structures. The dynamic perturbation method overcomes some limitations in the most existing methods. Such method is based on the exact relationship between the change in stiffness due to damage in a structure and the vibration modal data of the damaged structure. Such method can directly adopt the incomplete modal measurements for damage identification, without requiring model reduction or mode shape expansion techniques. Only limited number of vibration modal data measurements with uncertainty are sufficient to identify correctly structural damage, which is potentially useful for large engineering structures. In the inverse predictions of structural damage using the method, the system of governing equations may be ill-conditioned. Thus, a regularisation algorithm can be implemented in the method to provide stable solutions for the damage indicators. The dynamic perturbation method presents a great potential to applications for effective damage identification in complex structures.



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