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Abstract

The term ‘acoustic emission’ (AE) is applied in a broad sense to the sounds which are internally generated in a material which is under stress. AE testing is relatively simple with only a sensor (usually piezoelectric), basic signal-analysis equipment (amplifier, filter, data-processing equipment) and some means of loading the structure needed. There is a wide variety of mechanisms known to be responsible for AE generation, ranging from dislocation motion to crack propagation. Therefore, the basic AE monitoring techniques are applicable to a wide class of materials and structures. This is particularly true for composites with several mechanisms, including fiber fracture, fiber-matrix debonding, matrix crazing and cracking, and delamination known to generate AE signals in composites.

Keywords

Acoustic Emission Acoustic Emission Signal Acoustic Emission Event Kaiser Effect Acoustic Emission Transducer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Society for Experimental Mechanics 1989

Authors and Affiliations

  • R. A. Kline

There are no affiliations available

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