PL EN
Application of wavelet transform in analysis of guided wave propagation signals for damage detection in a steel plate
Beata Zima 1  
,   Magdalena Rucka  
 
Więcej
Ukryj
1
Gdańsk University of Technology, Faculty of Civil and Environmental Engineering, Department of Structural Mechanics, Narutowicza 11/12, 80-233 Gdańsk, Poland
Data publikacji: 21-12-2017
 
Diagnostyka 2015;16(2):43–48
 
SŁOWA KLUCZOWE
STRESZCZENIE
The paper presents results of experimental investigations on damage detection using guided wave propagation technique. The tested specimen was a steel plate with a defect in the form of a rectangular notch. Lamb waves were excited by a PZT actuator and sensed by a laser vibrometer. Since reflections from damage in registered signals are often masked by measurement noise, for identification of time of reflections from damage, continuous wavelet transform (CWT) was used. Obtained results indicated that application of wavelet signal processing enabled precise reconstruction of reflected wavefront from damage.
eISSN:2449-5220
ISSN:1641-6414