Application of Wavelet and EEMD Joint Denoising in Nonlinear Ultrasonic Testing of Concrete
المؤلفون المشاركون
Wang, Kui
Zhao, Ming-jie
Nie, Zhichao
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-05-16
دولة النشر
مصر
عدد الصفحات
11
الملخص EN
The health state of concrete is deteriorating during its service.
Nonlinear ultrasonic detection based on the amplitude of the fundamental and the second harmonic is considered to be a powerful tool for the discovery of the microcrack in concrete.
However, the research on processing the nonlinear ultrasonic signal is still insufficient.
In order to highlight the real frequency domain components in the nonlinear ultrasonic signal, wavelet and ensemble empirical mode decomposition (EEMD) were joined to denoise the numerical and measured signal.
The optimal wavelet base and the decomposition level were determined by the signal-to-noise ratios (SNRs).
Then, the wavelet threshold denoising signal was decomposed by EEMD, omitting the high-frequency components and ultimately achieving the desired denoising effect.
The denoising result of the test signals demonstrates that this method is effective in denoising the details of the ultrasonic signal and improving the reliability and adaptability of the nonlinear ultrasonic testing.
In this experiment, the concrete with the microcrack was tested by linear and nonlinear ultrasonic methods.
Based on the variation regularity of the nonlinear ultrasonic coefficient β and velocity v, we can conclude that the nonlinear ultrasonic parameter β is more sensitive to the microcrack in concrete than the traditional wave velocity v.
The nonlinear ultrasonic testing can be an important supplement to the current nondestructive testing technique of the concrete.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Nie, Zhichao& Wang, Kui& Zhao, Ming-jie. 2018. Application of Wavelet and EEMD Joint Denoising in Nonlinear Ultrasonic Testing of Concrete. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1121810
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Nie, Zhichao…[et al.]. Application of Wavelet and EEMD Joint Denoising in Nonlinear Ultrasonic Testing of Concrete. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1121810
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Nie, Zhichao& Wang, Kui& Zhao, Ming-jie. Application of Wavelet and EEMD Joint Denoising in Nonlinear Ultrasonic Testing of Concrete. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1121810
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1121810
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر