In this paper, a technique is presented for the detection and localization of an open crack in beam-like structures using experimentally measured natural frequencies and the Particle Swarm Optimization (PSO) method. The technique considers the variation in local flexibility near the crack. The natural frequencies of a cracked beam are determined experimentally and numerically using the Finite Element Method (FEM). The optimization algorithm is programmed in MATLAB. The algorithm is used to estimate the location and severity of a crack by minimizing the differences between measured and calculated frequencies. The method is verified using experimentally measured data on a cantilever steel beam. The Fourier transform is adopted to improve the frequency resolution. The results demonstrate the good accuracy of the proposed technique.
Accepted:
Published online:
Samir Khatir 1; Kevin Dekemele 1; Mia Loccufier 1; Tawfiq Khatir 2; Magd Abdel Wahab 3, 4, 5
@article{CRMECA_2018__346_2_110_0,
author = {Samir Khatir and Kevin Dekemele and Mia Loccufier and Tawfiq Khatir and Magd Abdel Wahab},
title = {Crack identification method in beam-like structures using changes in experimentally measured frequencies and {Particle} {Swarm} {Optimization}},
journal = {Comptes Rendus. M\'ecanique},
pages = {110--120},
publisher = {Elsevier},
volume = {346},
number = {2},
year = {2018},
doi = {10.1016/j.crme.2017.11.008},
language = {en},
}
TY - JOUR AU - Samir Khatir AU - Kevin Dekemele AU - Mia Loccufier AU - Tawfiq Khatir AU - Magd Abdel Wahab TI - Crack identification method in beam-like structures using changes in experimentally measured frequencies and Particle Swarm Optimization JO - Comptes Rendus. Mécanique PY - 2018 SP - 110 EP - 120 VL - 346 IS - 2 PB - Elsevier DO - 10.1016/j.crme.2017.11.008 LA - en ID - CRMECA_2018__346_2_110_0 ER -
%0 Journal Article %A Samir Khatir %A Kevin Dekemele %A Mia Loccufier %A Tawfiq Khatir %A Magd Abdel Wahab %T Crack identification method in beam-like structures using changes in experimentally measured frequencies and Particle Swarm Optimization %J Comptes Rendus. Mécanique %D 2018 %P 110-120 %V 346 %N 2 %I Elsevier %R 10.1016/j.crme.2017.11.008 %G en %F CRMECA_2018__346_2_110_0
Samir Khatir; Kevin Dekemele; Mia Loccufier; Tawfiq Khatir; Magd Abdel Wahab. Crack identification method in beam-like structures using changes in experimentally measured frequencies and Particle Swarm Optimization. Comptes Rendus. Mécanique, Volume 346 (2018) no. 2, pp. 110-120. doi : 10.1016/j.crme.2017.11.008. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2017.11.008/
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