A comparative study on crack identification of structures from the changes in natural frequencies using GA and PSO

Abstract

Purpose

The early detection of cracks, corrosion and structural failure in aging structures is one of the major challenges in the civil, mechanical and aircraft industries. Common inspection techniques are time consuming and hence can have strong economic implications due to downtime. The paper aims to discuss these issues.

Design/methodology/approach

As a result, during the past decade a number of methodologies have been proposed for detecting crack in structure based on variations in the structure's dynamic characteristics. This work showcases the efficacy of particle swarm optimization (PSO) and genetic algorithm (GA) in damage assessment of structures.

Findings

Efficiency of these tools has been tested on structures like beam, plane and space truss. The results show the effectiveness of PSO in crack identification and the possibility of implementing it in a real-time structural health monitoring system for aircraft and civil structures.

Originality/value

The methodology presented establishes the PSO as robust and competent tool over GA for crack identification using changes in natural frequencies.

Citation

Mohan, S.C., Yadav, A., Kumar Maiti, D. and Maity, D. (2014), "A comparative study on crack identification of structures from the changes in natural frequencies using GA and PSO", Engineering Computations, Vol. 31 No. 7, pp. 1514-1531. https://doi.org/10.1108/EC-02-2013-0061