Ultrasonic Guided Wave Testing System for Piping

2009 ◽  
Author(s):  
Yukihisa Imagawa ◽  
Hideki Wada ◽  
Yasuhiko Wakibe ◽  
Hideaki Kitagawa ◽  
Junichi Kusumoto ◽  
...  
Keyword(s):  
Ultrasonic Testing ◽  
Guided Wave ◽  
Testing System ◽  
Reliability Improvement ◽  
Wall Thinning ◽  
Ultrasonic Guided Wave ◽  
Acoustic Transducer ◽  
Thickness Gage ◽  
Electro Magnetic ◽  
Ultrasonic Thickness

In the operation of electric power plant, it is necessary to understand the condition of the pipe quantitatively. The purpose is to prevent the accident caused of the wall thinning portion due to erosion or corrosion. The thickness of the pipe is partially measured with the ultrasonic thickness gage now. However, it is difficult to investigate the wall thinning portion in the pipe quantitatively without confirming it beforehand. In this study, for the purpose to identify the location of thinning, we have developed the ultrasonic testing system using the guided wave that was able to investigate partially the wall thinning portion of all aspects of pipe to be inspected at a time. This system propagates guided wave by using an electro-magnetic acoustic transducer. We understand the extensive condition of the pipe by using this system. Therefore, the efficient investigation of the pipe is available. For that reason, it is expected to contribute to the reliability improvement of facilities and the reduction of maintenance and repairs.

A Non-Contact Guided Wave Technique for Defect Thinning Monitoring

2006 ◽  
Vol 326-328 ◽  
pp. 681-684 ◽  
Author(s):  
Ik Keun Park ◽  
Yong Kwon Kim ◽  
Tae Hyung Kim ◽  
Yong Sang Cho
Keyword(s):  
Guided Waves ◽  
Guided Wave ◽  
Velocity Change ◽  
Accelerated Corrosion ◽  
Ultrasonic Guided Wave ◽  
Acoustic Transducer ◽  
Thin Aluminum ◽  
Wave Technique ◽  
Electro Magnetic ◽  
Flow Accelerated Corrosion

This paper capitalizes on recent advances in the area of non-contact ultrasonic guided wave techniques. The present technique provides a decent method for nondestructive testing of defect thinning simulating a hidden corrosion or FAC(Flow Accelerated Corrosion) in a thin aluminum plate. The proposed approach is based on using EMAT(Electro-magnetic Acoustic Transducer) to generate guided waves and detect the wall thinning without any coupling. Interesting features in the dispersive behavior of selected guided modes are used for the detection of plate thinning. It is shown that mode cut-off measurement allows us to monitor a defect thinning level while a group velocity change can be used to quantify the thinning depth.

The Application of Laser-EMAT Technique Used to Testing Defect in Rail

2014 ◽  
Vol 875-877 ◽  
pp. 574-577 ◽  
Author(s):  
Yang Zhao ◽  
Zhong Qing Jia ◽  
Guo Rui ◽  
Jian Ma ◽  
Jiang Feng Song ◽  
...  
Keyword(s):  
Quality Control ◽  
Signal Processing ◽  
Early Detection ◽  
Nondestructive Test ◽  
Testing System ◽  
Testing Method ◽  
Acoustic Transducer ◽  
Nondestructive Testing Method ◽  
Electro Magnetic ◽  
Industrial Context

Nondestructive test systems are increasingly applied in the industrial context for their strong potentialities in improving and standardizing quality control. Especially in the service stage of rail, early detection of nucleus defects in the rail can avoid the broken rail accident. The aim of present work is to propose a kind of non-contact nondestructive testing method based on the laser and electro-magnetic acoustic transducer techniques, which is suitable to inspect the nucleus defects. This paper describes the testing system, principle and signal processing. The result shows the relative error of testing nucleus defects is about 3.24 %.

C112 Field Application of Ultrasonic guided wave testing system

2010 ◽  
Vol 2010.15 (0) ◽  
pp. 111-112
Author(s):  
Yukihisa IMAGAWA ◽  
Hideki WADA ◽  
Yasuhiko WAKIBE ◽  
Hideaki KITAGAWA ◽  
Junichi KUSUMOTO ◽  
...  
Keyword(s):  
Field Application ◽  
Guided Wave ◽  
Testing System ◽  
Ultrasonic Guided Wave

2615 Ultrasonic guided wave testing system for pipe

2007 ◽  
Vol 2007.1 (0) ◽  
pp. 541-542
Author(s):  
Yukihisa IMAGAWA ◽  
Hideki WADA ◽  
Yasuhiko WAKIBE ◽  
Hideaki KITAGAWA ◽  
Junichi KUSUMOTO ◽  
...  
Keyword(s):  
Guided Wave ◽  
Testing System ◽  
Ultrasonic Guided Wave

B206 Ultrasonic guided wave testing system for pipe

2009 ◽  
Vol 2009.14 (0) ◽  
pp. 259-260
Author(s):  
Yukihisa IMAGAWA ◽  
Hideki WADA ◽  
Yasuhiko WAKIBE ◽  
Hideaki KITAGAWA ◽  
Junichi KUSUMOTO ◽  
...  
Keyword(s):  
Guided Wave ◽  
Testing System ◽  
Ultrasonic Guided Wave

scholarly journals A Development of an Array Guided Wave Ultrasonic Testing System for pipe inspection

2015 ◽  
Vol 19 (5) ◽  
pp. 29-35
Author(s):  
Hyun-Joon Cho ◽  
Dong-Hoon Lee ◽  
To Kang ◽  
Jin-Ho Park ◽  
Seong-Jin Han
Keyword(s):  
Ultrasonic Testing ◽  
Guided Wave ◽  
Testing System ◽  
Pipe Inspection

OS6-4 Ultrasonic guided wave testing system for boiler tube

2006 ◽  
Vol 2006.11 (0) ◽  
pp. 175-176
Author(s):  
Yukihisa IMAGAWA ◽  
Yasuhiko WAKIBE ◽  
Akihiro KANAYA ◽  
Junichi KUSUMOTO ◽  
Yuichi KUDO
Keyword(s):  
Guided Wave ◽  
Testing System ◽  
Boiler Tube ◽  
Ultrasonic Guided Wave

Study on Dispersion Characteristics of Ultrasonic Guided Wave

2013 ◽  
Vol 333-335 ◽  
pp. 1713-1718
Author(s):  
Song Song Li ◽  
Xiao Ming Chen ◽  
Xiang Li
Keyword(s):  
Nondestructive Testing ◽  
Guided Waves ◽  
Guided Wave ◽  
Simulation Software ◽  
Dispersion Characteristics ◽  
Electromagnetic Acoustic Transducer ◽  
Low Frequencies ◽  
Ultrasonic Guided Wave ◽  
Acoustic Transducer ◽  
Testing Technology

Electromagnetic ultrasonic nondestructive testing technology, which it have the advantages of withstand high temperature and without coupling agent,is widely used in Nondestructive Testing (NDT) field. To effectively detect the defects, the dispersion characteristics and multimode of guided waves in the plate are studied by the disperse simulation software, and the variation of dispersion curve is analyzed by the geometric parameters and materials of plate. The results showed that the dispersion characteristics of guided wave in the plate is depended on the thickness and material of plate, and dispersion and the multimode characteristics of plate are better at low frequencies and smaller thickness. This is helpful to selection of Electromagnetic acoustic transducer (EMAT) parameter and detection operating point of guided wave.

Sign in / Sign up

Export Citation Format

Share Document