The amplitude-frequency measurement in non-destructive testing using the eddy current method
The paper describes a miniaturized device that records changes in voltage amplitude and signal frequency. After applying the measuring probe to the surface of the tested material, the voltage and frequency amplitude changes. In a place free from defects and nonconformities values of voltage a...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Publishing Agency - Welding Technology Review
2018-11-01
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| Series: | Przegląd Spawalnictwa |
| Subjects: | |
| Online Access: | http://www.pspaw.pl/index.php/pspaw/article/view/973 |
| Summary: | The paper describes a miniaturized device that records changes in voltage amplitude and signal frequency. After applying the measuring probe to the surface of the tested material, the voltage and frequency amplitude changes. In a place free from defects and nonconformities values of voltage amplitude and frequency are taken as reference values, with which the results obtained during further tests are compared. A clear change in the value of any of the parameters indicates a change in the condition of the tested material. Registration of two parameters with different sensitivityfor selected factors allows for a more accurate analysis of the condition of the testedmaterial. The miniaturized device can works in manual measurement mode or in auto-matic mode, it can be used in defectoscopy, structure and thickness measurements.
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| ISSN: | 0033-2364 2449-7959 |