Journal
ENGINEERING COMPUTATIONS
Volume 31, Issue 7, Pages 1514-1531Publisher
EMERALD GROUP PUBLISHING LTD
DOI: 10.1108/EC-02-2013-0061
Keywords
Genetic algorithm; Optimization; Particle swarm optimization; Finite element analysis; Natural frequency; Structural crack identification
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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.
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