Wavelet transform applied to internal defect detection by means of laser ultrasound
Visualitza/Obre
Cita com:
hdl:2117/178862
Tipus de documentCapítol de llibre
Data publicació2019-04-03
Condicions d'accésAccés obert
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continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Laser-generated ultrasound represents an interesting nondestructive testing technique that is being investigated in the last years as performative alternative to classical ultrasonic-based approaches. The greatest difficulty in analyzing the acoustic emission response is that an in-depth knowledge of how acoustic waves propagate through the tested composite is required. In this regard, different signal processing approaches are being applied in order to assess the significance of features extracted from the resulting analysis. In this study, the detection capabili-ties of internal defects in a metallic sample are proposed to be studied by means of the time-frequency analysis of the ultrasonic waves resulting from laser-induced thermal mechanism. In the proposed study, the use of the wavelet transform considering different wavelet variants is considered due to its multi-resolution time-frequency characteristics. Also, a significant time-frequency technique widely applied in other fields of research is applied, the synchrosqueezed transform.
CitacióMohamed Selim, H. [et al.]. Wavelet transform applied to internal defect detection by means of laser ultrasound. A: "Wavelet transform and complexity". 2019, p. 1-17.
ISBN978-1-83962-660-9
Col·leccions
- MCIA - Motion Control and Industrial Applications Research Group - Capítols de llibre [8]
- Doctorat en Física Computacional i Aplicada - Capítols de llibre [4]
- Doctorat en Enginyeria Electrònica - Capítols de llibre [2]
- Departament de Física - Capítols de llibre [60]
- DONLL - Dinàmica no lineal, òptica no lineal i làsers - Capítols de llibre [5]
- Departament d'Enginyeria Electrònica - Capítols de llibre [67]
Fitxers | Descripció | Mida | Format | Visualitza |
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Wavelet Transfo ... ns of Laser Ultrasound.pdf | Book Chapter | 3,623Mb | Visualitza/Obre |