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Development of Practical Wideband High-Fidelity Acoustic Emission Sensors

Published

Author(s)

Marvin A. Hamstad

Abstract

The development of a series of wideband acoustic emission (AE) 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 as low 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
International Conference on Trends in Optical Nondestructive Testing
Volume
2456

Keywords

acoustic emission sensor, displacement sensors, low noise transducer, wideband transducer

Citation

Hamstad, M. (1995), Development of Practical Wideband High-Fidelity Acoustic Emission Sensors, International Conference on Trends in Optical Nondestructive Testing (Accessed June 14, 2024)

Issues

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Created June 1, 1995, Updated February 17, 2017