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Proceedings Paper

A structural health monitoring system with ultrasonic MEMS transducers
Author(s): Rasim O. Guldiken; Onursal Onen; Mustafa Gul; F. Necati Catbas
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Paper Abstract

In this paper, we will summarize our efforts on exploring guided acoustic waves generated by MEMS ultrasonic transducers enabling a non-destructive, ultra-low powered, wireless SHM system. State-of-the-art SHM systems employ bulk piezoelectric transducers. However, they are not environmentally benign (contain lead), not cost feasible for monitoring every bridge in the U.S., require significant power for operation, lack integration capability for wireless interrogation, need precise matching layers, and have only 25-50 percent fractional bandwidth, limiting the detection resolution. To alleviate most of these shortcomings, a low impedance MEMS transducer, called a capacitive micromachined ultrasonic transducer (CMUT), is explored.

Paper Details

Date Published: 13 April 2011
PDF: 8 pages
Proc. SPIE 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011, 79810F (13 April 2011); doi: 10.1117/12.881036
Show Author Affiliations
Rasim O. Guldiken, Univ. of South Florida (United States)
Onursal Onen, Univ. of South Florida (United States)
Mustafa Gul, Univ. of Central Florida (United States)
F. Necati Catbas, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 7981:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011
Masayoshi Tomizuka, Editor(s)

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