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.5 No.1 previous AA SP9 (59-60-61-62-63-64-65-66)-67-NT 56 -57

Academic Articles
Regular Paper Vol.5No.2 (2013) p.113 - p.120

On the Efficiency of Direct Sparse Solver for FEM-ECT Analysis

Shigeru HEMMI 1,*, Masayuki SARUHASHI1and Yasushi IKEGAMI1
1Itochu Techno-Solutions Corporation, Kasumigaseki Bldg, 3-2-5 Kasumigaseki, Chiyoda-ku, Tokyo 100-6080, Japan
In the analysis of time harmonic eddy current testing (ECT) by FEM, in which non-cored exciter/detector coils are moved above the surface of metal object, the use of direct sparse solver has been studied. And it is found practically efficient because the factorized numerical matrix can be reused repeatedly in the calculation. The validity of this method is discussed and a satisfactory result for an ECT model is shown.
Eddy Current Testing, ECT, Finite Element Methods, FEM, Direct Sparse Solver, MUMPS, Edge Element, Coulomb Gauge
Full Paper: PDF EJAM Vol.5No.2 pp.113-120 "On the Efficiency of Direct Sparse Solver for FEM-ECT Analysis "

Article Information
Article history:
Received 9 November 2012
Accepted 10 June 2013