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Open AccessArticle

Guided Wave Based Crack Detection in the Rivet Hole Using Global Analytical with Local FEM Approach

1
Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208, USA
2
University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
*
Author to whom correspondence should be addressed.
Academic Editor: Zahra Sharif Khodaei
Materials 2016, 9(7), 602; https://doi.org/10.3390/ma9070602
Received: 1 June 2016 / Revised: 13 July 2016 / Accepted: 18 July 2016 / Published: 21 July 2016
(This article belongs to the Special Issue Advances in Structural Health Monitoring for Aerospace Structures)
In this article, ultrasonic guided wave propagation and interaction with the rivet hole cracks has been formulated using closed-form analytical solution while the local damage interaction, scattering, and mode conversion have been obtained from finite element analysis. The rivet hole cracks (damage) in the plate structure gives rise to the non-axisymmetric scattering of Lamb wave, as well as shear horizontal (SH) wave, although the incident Lamb wave source (primary source) is axisymmetric. The damage in the plate acts as a non-axisymmetric secondary source of Lamb wave and SH wave. The scattering of Lamb and SH waves are captured using wave damage interaction coefficient (WDIC). The scatter cubes of complex-valued WDIC are formed that can describe the 3D interaction (frequency, incident direction, and azimuth direction) of Lamb waves with the damage. The scatter cubes are fed into the exact analytical framework to produce the time domain signal. This analysis enables us to obtain the optimum design parameters for better detection of the cracks in a multiple-rivet-hole problem. The optimum parameters provide the guideline of the design of the sensor installation to obtain the most noticeable signals that represent the presence of cracks in the rivet hole. View Full-Text
Keywords: structural health monitoring; guided wave; damage detection; scatter cube; non-axisymmetric guided waves; sensor design structural health monitoring; guided wave; damage detection; scatter cube; non-axisymmetric guided waves; sensor design
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MDPI and ACS Style

Bhuiyan, M.Y.; Shen, Y.; Giurgiutiu, V. Guided Wave Based Crack Detection in the Rivet Hole Using Global Analytical with Local FEM Approach. Materials 2016, 9, 602.

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