Detection and estimation of damage in structures using imperialist competitive algorithm

Article type: Research Article

Authors: Bagheri, A. | Razeghi, H.R. | Amiri, G. Ghodrati

Affiliations: Center of Excellence for Fundamental Studies in Structural Engineering, School of Civil Engineering, Iran University of Science & Technology, Tehran, Iran

Note: [] Corresponding author. Tel.: +98 21 77240090; Fax: +98 21 77240398; E-mail: ghodrati@iust.ac.ir

Abstract: This paper presents a method for detection and estimation of structural damage on the basis of modal parameters of a damaged structure using imperialist competitive algorithm. The imperialist competitive algorithm was developed over the last few years in an attempt to overcome inherent limitations of traditional optimize method. In this research, imperialist competitive algorithm has been employed due to its favorable performance in detection of structural damages. The performance of the proposed method has been verified through using a benchmark problem provided by the IASC-ASCE Task Group on Structural Health Monitoring and a number of numerical examples. By way of comparison between location and amount of damage obtained from the proposed method and simulation model, it was concluded that the method is sensitive to the location and amount of damage. The results clearly revealed the superiority of the presented method in comparison with energy index method.

Keywords: Damage, identification, imperialist competitive algorithm, modal analysis, optimization

DOI: 10.3233/SAV-2010-0639

Journal: Shock and Vibration, vol. 19, no. 3, pp. 405-419, 2012