| Autor: |
J.F. de Belleval, Jean-Marc Gherbezza, P. Jagnoux |
| Rok vydání: |
1994 |
| Předmět: |
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| Zdroj: |
Advances in Signal Processing for Nondestructive Evaluation of Materials ISBN: 9789401044592 |
| DOI: |
10.1007/978-94-011-1056-3_3 |
| Popis: |
Despite the precautions taken by mean of calibration procedures, the evaluation of real defects in ultrasonic non destructive testing presents great discrepancies when we change the transducer by an other supposed to be of similar characteristics. These discrepancies are ascribed to the variations in the spectral responses of the transducers utilised. We have achieved a method which permits, by an adapted excitation, to compensate the differences in the transducers responses and we have shown that this permits a 6 dB gain upon the evaluation disparity of real defects. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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