Crack growth optimization using eddy current testing and genetic algorithm for estimating the stress intensity factors
2024 (English)In: Acta Mechanica, ISSN 0001-5970, E-ISSN 1619-6937, Vol. 235, no 6, p. 3643-3656Article in journal (Refereed) Published
Abstract [en]
This study developed a procedure for rapidly reconstructing a crack profile for calculating the parameters of fracture mechanics such as stress intensity factor with energy release rate (J) and displacement opening crack tip using data from the eddy current sensor. The inverse problem focused on adopting genetic algorithms to solve the direct problem iteratively. The use of the differential probe allows a rapid and precise resolution of the direct problem. The incident field produced by the two coils is determined using the 3D finite element results and the variation of impedance in each coil due to the crack. For the inverse problem, the crack’s surface is considered regular shape in terms of dimensions, and the sensor’s impedance expresses the objective function in terms of the width and length of the crack. The evaluation of the shape function and mesh matrix is made dependent on the iterative process, which makes the reversal procedure computationally lightweight when using genetic algorithms. © The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature 2024.
Place, publisher, year, edition, pages
Springer, 2024. Vol. 235, no 6, p. 3643-3656
Keywords [en]
Crack tips, Eddy current testing, Fracture mechanics, Inverse problems, Iterative methods, Stress intensity factors, Crack profiles, Differential probes, Direct problems, Eddy current sensors, Eddy-current testing, Energy-release rates, Fractures mechanics, Growth optimization, Opening cracks, Stress-intensity factors, Genetic algorithms
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:bth-26071DOI: 10.1007/s00707-024-03903-4ISI: 001190213600001Scopus ID: 2-s2.0-85188358729OAI: oai:DiVA.org:bth-26071DiVA, id: diva2:1848055
2024-04-022024-04-022024-06-24Bibliographically approved