電位差法を用いた裏面応力腐食割れ進展の連続モニタリング

Material type: 文書・図像類

Author: 佐藤, 康元ほか

Publisher: 日本機械学会

Publication date: 2006-12

Material Format: Digital

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Note (General)：: In order to investigate the applicability of the potential drop techniques to the continuous monitoring of stress corrosion cracking (SCC) propagation...

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Material Type: 文書・図像類
Title: 電位差法を用いた裏面応力腐食割れ進展の連続モニタリング
Author/Editor: 佐藤, 康元
渥美, 健夫
庄子, 哲雄
SATO, Yasumoto
ATSUMI, Takeo
SHOJI, Tetsuo
Author Heading: 佐藤, 康元
渥美, 健夫
庄子, 哲雄
SATO, Yasumoto
ATSUMI, Takeo
SHOJI, Tetsuo
Publication, Distribution, etc.: 日本機械学会
Publication Date: 2006-12
Publication Date (W3CDTF): 2006-12
Alternative Title: Continuous Monitoring of Back-Wall Stress Corrosion Cracking Propagation by Means of Potential Drop Techniques
Periodical title: 日本機械学会論文集. A編
No. or year of volume/issue: 72 724
Volume: 72
Issue: 724
Pages: 1949-1954
Text Language Code: jpn
Subject Heading: Stress Corrosion Cracking
Crack Propagation
Nondestructive Inspection
Sensitized Stainless Steel
Continuous Monitoring
Potential Drop
Target Audience: 一般
Note (General): In order to investigate the applicability of the potential drop techniques to the continuous monitoring of stress corrosion cracking (SCC) propagation, SCC tests were performed in a sodium thiosulfate solution at room temperature using plate specimens with weldments. The SCC propagation was monitored using the techniques of direct current potential drop (DCPD), alternating current potential drop (ACPD) and modified induced current potential drop (MICPD) on the reverse side that on which the SCC existed and effectiveness of each technique for the continuous monitoring from the reverse side of SCC was compared from the viewpoints of sensitivity to the crack propagation and measurement stability. The MICPD and DCPD techniques permit continuous monitoring of the backwall SCC propagation, which initiates from a fatigue pre-crack at a depth of about 4mm, from which it propagates through more than 80% of the specimen thickness. The MICPD technique can decrease the effect of the current flowing in the direction of the crack length by focusing the induced current into the local area of measurement using induction coils, so that the sensitivity of the continuous monitoring of the back wall SCC propagation is higher than that of the DCPD and ACPD techniques.
Access Restrictions: 限定公開
Rights (production): 〓 2006 日本機械学会
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ