ICMST-Tohoku 2018
Oct. 23 - 26, 2018
Sendai, Japan
ICMST-Shenzhen 2016
Nov 1 - 4, 2016
Shenzhen, China
ICMST-Kobe 2014
Nov 2(Sun) - 5(Wed), 2014
Kobe, Japan
Nuclear Regulation Authority Outline of the New Safety Standards for Light Water Reactors for Electric Power Generation
For Public Comment
Outline of New Safety Standard (Design Basis)
For Public Comment
New Safety Standards (SA) Outline (Draft)
For Public Comment
Outline of New Safety Standard(Earthquake and Tsunami)(DRAFT)

Vol.10 No.2(Aug)
Vol.10 No.1(May)
Vol.9 No.4(Feb)
Vol.9 No.3(Nov)

< Other Issues


Occasional Topics
OTjapan Measures for Tsunami Striking Nuclear Power Station in Japan
Special Article: The Great Tohoku Earthquake (1)
OTjapan The Tragedy of “To Be” Principle in the Japanese Nuclear Industry
EJAMOT_CN3_Figure1_The_outside_view_of_CEFR OTChinaPlanning and Consideration on SFR R&D Activities in China
< All Occasional Topics

Featured Articles
EJAM7-3NT72 A New Mechanical Condition-based Maintenance Technology Using Instrumented Indentation Technique
EJAM7-3NT73 Survey robots for Fukushima Daiichi Nuclear Power Plant

(in English)


Vol.3 No.2 previous GA 18 - AA 36 - NT 39 - 40

Academic Articles
Regular Paper Vol.3No.3 (2011) p.92 - p.101

Simulation and visualization of guided wave propagation by large-scale 3D FEM

Takashi FURUKAWA*and Ichiro KOMURA
Japan Power Engineering and Inspection Corporation, 14-1 Bentencho, Tsurumi-ku, Yokohama 230-0044, Japan
Ultrasonic guided waves have been widely applied to the long-range inspection of straight piping. The interpretation of the guided wave ultrasonic testing data beyond welds and elbows is challenging because there are many wave modes with different sound velocity. One of the key techniques to examine the beam path of each guided wave mode is the visualization of ultrasonic wave propagation. The authors have employed a large-scale FEM code for bulk wave propagation to the interpretation of UT data, analysis of suitable UT condition and training of UT. This paper describes the simulation and visualization of guided wave propagation in pipes and beyond elbows and welds via a large-scale 3D pure FEM code, which has over one billion elements and parallel computing system. This study presents the comparisons between the simulated and experimental results.
Ultrasonic guided wave, Wave propagation, FEM, Piping, Elbow, Welds
Full Paper: PDF EJAM Vol.3No. 2 pp.92-101 "Simulation and visualization of guided wave propagation by large-scale 3D FEM
Article Information
Article history:
Received 13 May 2011
Accepted 25 November 2011