D. G. Ksenofontov, V. N. Kostin
IMPLEMENTATION OF DIGITAL METHODS TO ANALYZE EDDY-CURRENT SIGNALS BASED ON THE E14-440 MODULE
DOI: 10.17804/2410-9908.2021.6.032-036 Nondestructive testing methods utilize various sensors, and different signal types require different processing methods. Digital implementation of signal processing methods can expand the variety of methods implemented by one system. An eddy-current test system based on the E14-440 module has been developed. Quadrature amplitude demodulation and fast Fourier transformation are implemented to analyze the signal. The amplitude, phase, and complex parts of the signal are calculated. It is shown that both methods are applicable and allow elimination of some analog circuits. However, digital signal processing significantly depends on conversion rates and synchronization between generation and pickup of the signal.
Acknowledgement: This work was carried out within the framework of the state order from the RF Ministry of Education and Science on topic “Diagnostics,” project no. АААА-А18-118020690196-3. Keywords: Eddy-current, digital signal processing, amplitude, phase References:
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Д. Г. Ксенофонтов, В. Н. Костин
РЕАЛИЗАЦИЯ ЦИФРОВЫХ МЕТОДОВ АНАЛИЗА ВИХРЕТОКОВЫХ СИГНАЛОВ НА БАЗЕ МОДУЛЯ E14-440
В методах неразрушающего контроля используются различные датчики, а для различных типов сигналов требуются соответствующие методы обработки. Цифровая реализация методов обработки сигналов может расширить разнообразие методов, реализуемых в одной системе. Разработана система вихретокового контроля на базе модуля Е14-440. Для анализа сигнала реализованы квадратурная амплитудная демодуляция и быстрое преобразование Фурье. Рассчитаны амплитуда, фаза и комплексная часть сигнала. Показано, что оба метода применимы и позволяют исключить из измерительного прибора некоторые аналоговые схемы. Однако цифровая обработка сигнала в значительной степени зависит от скорости преобразования и синхронизации между генерацией и считыванием сигнала.
Ключевые слова: Вихретоковый контроль, цифровая обработка сигналов, амплитуда, фаза Библиография:
- Kostin V. N., Smorodinskii Ya. G. Multipurpose software-hardware systems for active electromagnetic testing as a trend // Russian Journal of Nondestructive Testing. – 2017. – Vol. 53, No. 7. – P. 493–504. – DOI: 10.1134/S1061830917070075.
- García-Martín J., Gómez-Gil J., Vázquez-Sánchez E. Non-Destructive Techniques Based on Eddy Current Testing // Sensors. – 2011. – Vol. 11, No. 3. – P. 2525–2565. – DOI: 10.3390/s110302525.
- Characterization of image sequences of a defect using pulsed eddy current signals / C. Zemin, F. Mengbao, C. Binghua, H. Bin, S. Jingwei // Journal of Magnetism and Magnetic Materials. – 2021. – Vol. 534. – P. 168007. – DOI: 10.1016/j.jmmm.2021.168007.
- Measurement of coating thickness using lift-off point of intersection features from pulsed eddy current signals / Y. Wang, M. Fan, B. Cao, B. Ye, D. Wen // NDT & E International. – 2020. – Vol. 116. – P. 102333. – DOI: 10.1016/j.ndteint.2020.102333.
- Detection of delamination defects inside carbon fiber reinforced plastic laminates by measuring eddy-current loss / T. Wang, D. Wu, W. Chen, J. Yang // Composite Structures. – 2021. – Vol. 268. – P. 114012. – DOI: 10.1016/j.compstruct.2021.114012.
- Eddy-current array-probe technique for imaging near-surface and deep-lying delaminations in multidirectional carbon fiber composites / K. Mizukami, S. Hioki, K. Moriyama, K. Ogi, W. Miyaji, K. Kimura // Composite Structures. – 2021. – Vol. 276. – P. 114537. – DOI: 10.1016/j.compstruct.2021.114537.
- Tretter S. A., Communication System Design Using DSP Algorithms. – College Park, MD : Springer US, 2008. – 352 p.
Библиографическая ссылка на статью
Ksenofontov D. G., Kostin V. N. Implementation of Digital Methods to Analyze Eddy-Current Signals Based on the E14-440 Module // Diagnostics, Resource and Mechanics of materials and structures. -
2021. - Iss. 6. - P. 32-36. - DOI: 10.17804/2410-9908.2021.6.032-036. -
URL: http://dream-journal.org/issues/content/article_347.html (accessed: 21.12.2024).
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