19 May 1995 Development of practical wideband high-fidelity acoustic emission sensors
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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.
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Marvin A. Hamstad, Marvin A. Hamstad, Christopher M. Fortunko, Christopher M. Fortunko, } "Development of practical wideband high-fidelity acoustic emission sensors", Proc. SPIE 2456, Nondestructive Evaluation of Aging Bridges and Highways, (19 May 1995); doi: 10.1117/12.209774; https://doi.org/10.1117/12.209774
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