scholarly journals Ultrasonic multi-skip tomography for pipe inspection

2014 ◽  
Author(s):  
Arno Volker ◽  
Tim van Zon
Keyword(s):  
Pipe Inspection

Guided Wave Focusing Mechanics in Pipe

2003 ◽  
Author(s):  
Takahiro Hayashi ◽  
Koichiro Kawashima ◽  
Zongqi Sun ◽  
Joseph L. Rose
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Guided Waves ◽  
Wave Structure ◽  
Guided Wave ◽  
Pipe Inspection ◽  
Specific Point ◽  
Wave Focusing ◽  
Beam Focusing ◽  
Subsequent Time

Guided waves can be used in pipe inspection over long distances. Presented in this paper is a beam focusing technique to improve the S/N ratio of the reflection from a tiny defect. Focusing is accomplished by using non-axisymmetric waveforms and subsequent time delayed superposition at a specific point in a pipe. A semi-analytical finite element method is used to present wave structure in the pipe. Focusing potential is also studied with various modes and frequencies.

scholarly journals Analysis and Improvement of Cilia Type Pipe Inspection Robot Using Extension Type Flexible Pneumatic Actuators

2021 ◽  
Vol 14 (1) ◽  
pp. 19-27
Author(s):  
Takashi SHINOHARA ◽  
Keichi KUSUNOSE ◽  
Tetsuya AKAGI ◽  
Shujiro DOHTA ◽  
Takumi KOBAYASHI ◽  
...  
Keyword(s):  
Pipe Inspection ◽  
Pneumatic Actuators ◽  
Inspection Robot

scholarly journals Movement Control for an Omnidirectional Mobile Mechanism for Pipe-Inspection Robot in Small Diameter Pipes

2020 ◽  
Vol 86 (11) ◽  
pp. 898-903
Author(s):  
Masato MIZUKAMI ◽  
Daisuke HARADA ◽  
Naohiko HANAJIMA ◽  
Yoshinori FUJIHIRA
Keyword(s):  
Small Diameter ◽  
Movement Control ◽  
Pipe Inspection ◽  
Inspection Robot

Concrete filled steel pipe inspection using electro magnetic acoustic transducer (EMAT)

2005 ◽  
Author(s):  
Won-Bae Na ◽  
Tribikram Kundu ◽  
Yeon-Sun Ryu ◽  
Jeong-Tae Kim
Keyword(s):  
Steel Pipe ◽  
Pipe Inspection ◽  
Acoustic Transducer ◽  
Electro Magnetic
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