A computational framework is developed for the detection of flaws in flexible structures. The framework is based on posing the detection problem as an inverse problem, which requires the solution of many forward problems. Each forward problem is associated with a known flaw; an appropriate cost functional evaluates the quality of each candidate flaw based on the solution of the corresponding forward problem. On the higher level, the inverse problem is solved by a global optimization algorithm. The performance of the computational framework is evaluated by considering the detectability of various types of flaws. In the present context detectability is defined by introducing a measure of the distance between the sought flaw and trial flaws in the space of the parameters characterizing the configuration of the flaw. The framework is applied to crack detection in flat membranes subjected to time-harmonic and transient excitations. The detectability of cracks is compared for these two cases.
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ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis
July 7–9, 2008
Haifa, Israel
Conference Sponsors:
- International
ISBN:
978-0-7918-4836-4
PROCEEDINGS PAPER
Framework for Flaw Detection: Application to Dynamic Crack Detection in Flat Membranes Available to Purchase
Daniel Rabinovich,
Daniel Rabinovich
Technion-Israel Institute of Technology, Haifa, Israel
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Dan Givoli,
Dan Givoli
Technion-Israel Institute of Technology, Haifa, Israel
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Shmuel Vigdergauz
Shmuel Vigdergauz
Israel Electric Corporation Ltd., Haifa, Israel
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Daniel Rabinovich
Technion-Israel Institute of Technology, Haifa, Israel
Dan Givoli
Technion-Israel Institute of Technology, Haifa, Israel
Shmuel Vigdergauz
Israel Electric Corporation Ltd., Haifa, Israel
Paper No:
ESDA2008-59086, pp. 217-223; 7 pages
Published Online:
July 6, 2009
Citation
Rabinovich, D, Givoli, D, & Vigdergauz, S. "Framework for Flaw Detection: Application to Dynamic Crack Detection in Flat Membranes." Proceedings of the ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. Volume 2: Automotive Systems; Bioengineering and Biomedical Technology; Computational Mechanics; Controls; Dynamical Systems. Haifa, Israel. July 7–9, 2008. pp. 217-223. ASME. https://doi.org/10.1115/ESDA2008-59086
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