TY - JOUR
T1 - Continuous monitoring of back wall stress corrosion cracking growth in sensitized type 304 stainless steel weldment by means of potential drop techniques
AU - Sato, Y.
AU - Atsumi, T.
AU - Shoji, T.
N1 - Funding Information:
This study was partially performed under the sponsorship of JNES open application project for enhancing the basis of nuclear safety (JNES: Japan Nuclear Energy Safety Organization). This study is also partially supported by the Grant-in Aid for the 21st Century COE Program, “The Exploration of the Frontiers of Mechanical Science Based on Nanotechnology” from the Ministry of Education, Culture, Sports, Science and Technology.
PY - 2007/5
Y1 - 2007/5
N2 - Stress corrosion cracking (SCC) tests on welded specimens of sensitized type 304SS with a thickness of 20 mm were performed in sodium thiosulphate solution at room temperature, with continuous monitoring of the SCC growth, using the techniques of modified induced current potential drop (MICPD), alternating current potential drop (ACPD) and direct current potential drop (DCPD). The MICPD and DCPD techniques permit continuous monitoring of the back wall SCC, which initiates from a fatigue pre-crack at a depth of about 4 mm, 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 is higher than that of the ACPD and DCPD techniques.
AB - Stress corrosion cracking (SCC) tests on welded specimens of sensitized type 304SS with a thickness of 20 mm were performed in sodium thiosulphate solution at room temperature, with continuous monitoring of the SCC growth, using the techniques of modified induced current potential drop (MICPD), alternating current potential drop (ACPD) and direct current potential drop (DCPD). The MICPD and DCPD techniques permit continuous monitoring of the back wall SCC, which initiates from a fatigue pre-crack at a depth of about 4 mm, 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 is higher than that of the ACPD and DCPD techniques.
KW - Continuous monitoring
KW - Potential drop
KW - Sensitized stainless steel
KW - Stress corrosion cracking
UR - http://www.scopus.com/inward/record.url?scp=34047109082&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34047109082&partnerID=8YFLogxK
U2 - 10.1016/j.ijpvp.2007.01.004
DO - 10.1016/j.ijpvp.2007.01.004
M3 - Article
AN - SCOPUS:34047109082
VL - 84
SP - 274
EP - 283
JO - International Journal of Pressure Vessels and Piping
JF - International Journal of Pressure Vessels and Piping
SN - 0308-0161
IS - 5
ER -