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Proceedings Paper

Development of practical wideband high-fidelity acoustic emission sensors
Author(s): Marvin A. Hamstad; Christopher M. Fortunko
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Paper Abstract

The development of a series of wideband acoustic emission sensor/preamplifier systems is described. Key design factors are discussed along with the actual design and characterization of the sensors. These new sensors with integral amplification are out-of-plane, displacement response sensors nearly independent of frequency over a range from a slow as 30 to 50 kHz up to 1.2 MHz. The sensor design includes electromagnetic shielding and mechanical protection of the sensitive elements. More importantly, these practical sensors have signal-to-noise sensitivity that is equivalent to typical commercial resonant sensor/preamplifier systems operating from 100 kHz to 300 kHz. A mounting fixture for the sensors has also been developed.

Paper Details

Date Published: 19 May 1995
PDF: 8 pages
Proc. SPIE 2456, Nondestructive Evaluation of Aging Bridges and Highways, (19 May 1995); doi: 10.1117/12.209774
Show Author Affiliations
Marvin A. Hamstad, National Institute of Standards and Technology (United States)
Christopher M. Fortunko, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 2456:
Nondestructive Evaluation of Aging Bridges and Highways
Steven B. Chase, Editor(s)

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