Fezayil Sunca
Fatih Yesevi OKUR
Ahmet Can Altunışık
Volkan Kahya
Abstract
Experimental modal testing is a widely used non-destructive method for experimental evaluation of dynamic characteristics of all engineering structures and it is used in damage detection and structural health monitoring in operational conditions. In this method, sensor devices are placed on special coordinate points of structures. In order to get good correlation in measurement, many sensors are required for structural identification and long-term structural health monitoring in large structures so the costs of measurement will increase. Therefore, minimum number of sensors should be placed on appropriate locations on the system during experimental modal measurements to ensure both the information with sufficient quality and the cost reduction. The aim of this study is to perform experimental investigation of laminated composite beam with through an optimal sensor placement approach. The study shows that there is a good agreement between the natural frequencies and mode shapes obtained from the initial measurements and those by using the limited number of sensors.
Keywords
Optimal sensor placement,
Operation modal analysis,
Effective independence method
