Genetic algorithms + data structures = evolution programs (2nd, extended ed.)
Genetic algorithms + data structures = evolution programs (2nd, extended ed.)
Genetic Algorithms in Search, Optimization and Machine Learning
Genetic Algorithms in Search, Optimization and Machine Learning
Finite Elements in Analysis and Design
Practical Genetic Algorithms with CD-ROM
Practical Genetic Algorithms with CD-ROM
Damage assessment of structures using hybrid neuro-genetic algorithm
Applied Soft Computing
Locating the critical failure surface in a slope stability analysis by genetic algorithm
Applied Soft Computing
On the application of bees algorithm to the problem of crack detection of beam-type structures
Computers and Structures
Damage detection based on improved particle swarm optimization using vibration data
Applied Soft Computing
Mathematical and Computer Modelling: An International Journal
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A fault diagnosis method based on genetic algorithms (GAs) and a model of damaged (cracked) structure is proposed. For modeling the cracked-beam structure an analytical model of a cracked cantilever beam is utilized and natural frequencies are obtained through numerical methods. Our method utilizes genetic algorithms to monitor the possible changes in the natural frequencies of the structure. The identification of the crack location and depth in the cantilever beam is formulated as an optimization problem, and binary and continuous genetic algorithms (BGA, CGA) are used to find the optimal location and depth by minimizing the cost function which is based on the difference of measured and calculated natural frequencies. Also we present a new cost function based on natural frequencies. The average values of location and depth prediction errors are 1.02% and 1.98%, respectively, using the BGA. These values become 0.73% and 1.11% for the CGA. To validate the proposed method and investigate the modeling and measurement errors some experimental results are also included. The average values of experimental location and depth prediction errors are 10.57% and 11.19%, respectively, for the BGA. These values become 10.21% and 10.39% for the CGA.