Locating Defects Using Dynamic Strain Analysis and Artificial Neural Networks

Abstract:

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An inverse artificial neural network (ANN) assessment for locating defects in bars with or without notches is presented in the paper. Postulated void defects of 1mm x 1mm were introduced into bars that were impacted with an impulse step load; the resultant elastic waves propagate impinging on the defects. The resultant transient strain field was analyzed using the finite element method. Transient strain data was collected at nodal points or sensors locations on the boundary of the bars and used to train and assess ANNs. The paper demonstrates quantitatively, the effects of features such as the design of ANN, sensing parameters such as number of data collection points, and the effect of geometric features such as notches in the bars.

Info:

Periodical:

Edited by:

J.M. Dulieu-Barton and S. Quinn

Pages:

325-330

DOI:

10.4028/www.scientific.net/AMM.3-4.325

Citation:

L. H. Hernández-Gómez et al., "Locating Defects Using Dynamic Strain Analysis and Artificial Neural Networks", Applied Mechanics and Materials, Vols. 3-4, pp. 325-330, 2005

Online since:

August 2006

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