| 摘要 |
This device generates a simulated acoustic emission signal and simultaneously introduces the signal into a test article. The device provides a means for positioning precision brittle tubes or rods against the test article in a controlled fashion. A simulated signal, a stress pulse, is introduced into the test article at a point source when sufficient force is applied to break the tubes or rod against the test article. The stress pulse is generated by the rapid release of elastic energy within the test article itself therefore it very closely simulates the acoustic emission signal generated by a flaw in the material.
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