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Proceedings Paper

An impedance-based approach for detection and quantification of damage in cracked plates and loose bolts in bridge structures
Author(s): Masoud Rabiei; Jeremy Sheldon; Carl Palmer
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Paper Abstract

The applicability of Electro-Mechanical Impedance (EMI) approach to damage detection, localization and quantification in a mobile bridge structure is investigated in this paper. The developments in this paper focus on assessing the health of Armored Vehicle Launched Bridges (AVLBs). Specifically, two key failure mechanisms of the AVLB to be monitored were fatigue crack growth and damaged (loose) rivets (bolts) were identified. It was shown through experiment that bolt damage (defined here as different torque levels applied to bolts) can be detected, quantified and located using a network of lead zirconate titanate (PZT) transducers distributed on the structure. It was also shown that cracks of various sizes can be detected and quantified using the EMI approach. The experiments were performed on smaller laboratory specimens as well as full size bridge-like components that were built as part of this research. The effects of various parameters such as transducer type and size on the performance of the proposed health assessment approach were also investigated.

Paper Details

Date Published: 20 April 2012
PDF: 11 pages
Proc. SPIE 8348, Health Monitoring of Structural and Biological Systems 2012, 834828 (20 April 2012); doi: 10.1117/12.915453
Show Author Affiliations
Masoud Rabiei, Impact Technologies (United States)
Jeremy Sheldon, Impact Technologies (United States)
Carl Palmer, Impact Technologies (United States)

Published in SPIE Proceedings Vol. 8348:
Health Monitoring of Structural and Biological Systems 2012
Tribikram Kundu, Editor(s)

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