The use of acoustic emission to determine characteristic dynamic strength and toughness properties of steel
The use of acoustic emission to determine characteristic dynamic strength and toughness properties of steel
Richter, H.; Böhmert, J.; Viehrig, H.-W.
This paper presents an acoustic emission (AE) based method to determine the ductile crack initiation and additionally the beginning of yield. The experimental techniques used to evaluate σyd and Jid include both instrumented pendulum impact tests with the AE transducer within the striker (tup) and medium rate three point bend (TPB) tests with additional AE transducers on the specimen surface.
Results obtained from the tests indicate that the AE method is capable of detecting general yielding and the onset of ductile crack growth (initiation). Different types of pulse shaped AE signals can be observed. They were connected with characteristic features during the loading process
- Nuclear Engineering and Design 188 (1999), 241-254
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