Defect Detection and Imaging Using Focused Ultrasonic Guided Waves

2007 ◽  
Author(s):  
R. Sicard ◽  
H. Serhan
Keyword(s):  
Defect Detection ◽  
Guided Waves ◽  
Ultrasonic Guided Waves

scholarly journals A Novel Defect Estimation Approach in Wind Turbine Blades Based on Phase Velocity Variation of Ultrasonic Guided Waves

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4879
Author(s):  
Renaldas Raišutis ◽  
Kumar Anubhav Tiwari ◽  
Egidijus Žukauskas ◽  
Olgirdas Tumšys ◽  
Lina Draudvilienė
Keyword(s):  
Phase Velocity ◽  
Wind Turbine ◽  
Relative Error ◽  
Defect Detection ◽  
Guided Waves ◽  
Experimental Studies ◽  
Ultrasonic Guided Waves ◽  
Velocity Variation ◽  
Relative Errors ◽  
New Criterion

The reliability of the wind turbine blade (WTB) evaluation using a new criterion is presented in the work. Variation of the ultrasonic guided waves (UGW) phase velocity is proposed to be used as a new criterion for defect detection. Based on an intermediate value between the maximum and minimum values, the calculation of the phase velocity threshold is used for defect detection, location and sizing. The operation of the proposed technique is verified using simulation and experimental studies. The artificially milled defect having a diameter of 81 mm on the segment of WTB is used for verification of the proposed technique. After the application of the proposed evaluation technique for analysis of the simulated B-scan image, the coordinates of defect edges have been estimated with relative errors of 3.7% and 3%, respectively. The size of the defect was estimated with a relative error of 2.7%. In the case of an experimentally measured B-scan image, the coordinates of defect edges have been estimated with relative errors of 12.5% and 3.9%, respectively. The size of the defect was estimated with a relative error of 10%. The comparative results obtained by modelling and experiment show the suitability of the proposed new criterion to be used for the defect detection tasks solving.

scholarly journals Simulation Research on Defect Detection in Station Process Pipelines using Ultrasonic Guided Waves

2021 ◽  
Vol 2033 (1) ◽  
pp. 012208
Author(s):  
Yi Jiang ◽  
YuTing Liu ◽  
LeiChao Wang ◽  
Feng Li ◽  
Ge Chen ◽  
...  
Keyword(s):  
Defect Detection ◽  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Simulation Research

DELAMINATION DEFECT DETECTION USING ULTRASONIC GUIDED WAVES IN ADVANCED HYBRID STRUCTURAL ELEMENTS

2010 ◽  
Author(s):  
Fei Yan ◽  
Kevin “Xue” Qi ◽  
Joseph L. Rose ◽  
Hasso Weiland ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Defect Detection ◽  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Structural Elements

Effect of Pipe Bend Configuration on Guided Waves-Based Defects Detection: An Experimental Study

2015 ◽  
Vol 138 (2) ◽  
Author(s):  
Jing Ni ◽  
Shaoping Zhou ◽  
Pugen Zhang ◽  
Yong Li
Keyword(s):  
Experimental Study ◽  
Defect Detection ◽  
Guided Waves ◽  
Fe Simulation ◽  
Ultrasonic Guided Waves ◽  
Detection Sensitivity ◽  
Pipe Bend ◽  
Simulation And Experiment ◽  
Testing Techniques ◽  
Waves Propagation

Ultrasonic guided waves is one of the most effective nondestructive testing techniques, which has been successfully applied for damage detection and evaluation of piping components. However, research about defects detection for pipelines with multiple bends is still limited. In this paper, effect of pipe bend arrangement on guided waves-based defect detection is investigated by experimental method, in which different configurations including space-Z type, U type, and plane-Z type are considered, respectively. Finite element (FE) simulation is used to explore the propagation behaviors of axisymmetric L (0, 2) mode in different bend configurations. On this basis, the detection sensitivity for different crack locations is experimentally investigated. Simulation and experiment results reveal that feature of guided waves propagation across the first and the second bend is totally different, and the defect detection sensitivity in the second bend is different from that in the first bend.

ULTRASONIC GUIDED WAVES FOR THE INSPECTION OF ADHESIVELY BONDED JOINTS

2008 ◽  
Author(s):  
Padma Kumar Puthillath ◽  
Fei Yan ◽  
Clifford J. Lissenden ◽  
Joseph L. Rose ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Adhesively Bonded Joints
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