Impedance-based structural health monitoring (Conference Presentation)

Gyuhae Park; Daniel J. Inman Sr.

doi:10.1117/12.2261351

11 May 2017 Impedance-based structural health monitoring (Conference Presentation)

Gyuhae Park, Daniel J. Inman Sr.

Proceedings Volume 10172, A Tribute Conference Honoring Daniel Inman; 1017209 (2017) https://doi.org/10.1117/12.2261351
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

Abstract

This paper presents an overview of impedance-based structural health monitoring, which has been pioneered by Inman and his research group. The basic principle behind this technique is to apply high frequency structural excitations (typically greater than 30 kHz) through the surface-bonded piezoelectric transducers, and measure the impedance of structures by monitoring the current and voltage applied to the piezoelectric transducers. Changes in impedance indicate changes in the structure, which in turn can indicate that damage has occurred. For the last two decades, extensive research works have been performed to various applications, including mechanical, aerospace and civil structural components. The technique has been also extended to piezoelectric sensor diagnostics, concrete cure monitoring, and biomedical applications. This paper presents the summary of how this technique has been evolved with the significant contribution by Inman.

Conference Presentation

Citation Download Citation

Gyuhae Park and Daniel J. Inman Sr. "Impedance-based structural health monitoring (Conference Presentation)", Proc. SPIE 10172, A Tribute Conference Honoring Daniel Inman, 1017209 (11 May 2017); https://doi.org/10.1117/12.2261351

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KEYWORDS

Structural health monitoring

Transducers

Aerospace engineering

Biomedical optics

Diagnostics

Sensors

Current controlled current source

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