Development of practical wideband high-fidelity acoustic emission sensors

Marvin A. Hamstad; Christopher M. Fortunko

doi:10.1117/12.209774

19 May 1995 Development of practical wideband high-fidelity acoustic emission sensors

Marvin A. Hamstad, Christopher M. Fortunko

Proceedings Volume 2456, Nondestructive Evaluation of Aging Bridges and Highways; (1995) https://doi.org/10.1117/12.209774
Event: Nondestructive Evaluation of Aging Infrastructure, 1995, Oakland, CA, United States

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.

Citation Download Citation

Marvin A. Hamstad and 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); https://doi.org/10.1117/12.209774

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