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论文类型： 期刊论文

发表时间： 2014-08-01

发表刊物： SMART STRUCTURES AND SYSTEMS

收录刊物： SCIE、Scopus

卷号： 14

期号： 2

页面范围： 105-128

ISSN号： 1738-1584

关键字： stochastic damage locating vector (SDLV) method; sensor layout; damage detection; steel-truss bridge; damage localization; structural health monitoring

摘要： The stochastic damage locating vector (SDLV) method has been studied extensively in recent years because of its potential to determine the location of damage in structures without the need for measuring the input excitation. The SDLV method has been shown to be a particularly useful tool for damage localization in steel truss bridges through numerical simulation and experimental validation. However, several issues still need clarification. For example, two methods have been suggested for determining the observation matrix C identified for the structural system; yet little guidance has been provided regarding the conditions under which the respective formulations should be used. Additionally, the specific layout of the sensors to achieve effective performance with the SDLV method and the associated relationship to the specific type of truss structure have yet to be explored. Moreover, how the location of truss members influences the damage localization results should be studied. In this paper, these three issues are first investigated through numerical simulation and subsequently the main results are validated experimentally. The results of this paper provide guidance on the effective use of the SDLV method.