An impedance-based approach for detection and quantification of damage in cracked plates and loose bolts in bridge structures

Masoud Rabiei; Jeremy Sheldon; Carl Palmer

doi:10.1117/12.915453

20 April 2012 An impedance-based approach for detection and quantification of damage in cracked plates and loose bolts in bridge structures

Masoud Rabiei, Jeremy Sheldon, Carl Palmer

Author Affiliations +

Proceedings Volume 8348, Health Monitoring of Structural and Biological Systems 2012; 834828 (2012) https://doi.org/10.1117/12.915453
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

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.

Citation Download Citation

Masoud Rabiei, Jeremy Sheldon, and Carl Palmer "An impedance-based approach for detection and quantification of damage in cracked plates and loose bolts in bridge structures", Proc. SPIE 8348, Health Monitoring of Structural and Biological Systems 2012, 834828 (20 April 2012); https://doi.org/10.1117/12.915453

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