[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.3795/KSME-A.2015.39.3.269

Investigation on Effect of Distance Between Two Collinear Circumferential Surface Cracks on Primary Water Stress Corrosion Crack Growth in Alloy 600TT Steam Generator Tubes

Heo, Eun-Ju (Dept. of Mechanical Engineering, Sunchon Nat'l Univ.)
Kim, Jong-Sung (Dept. of Mechanical Engineering, Sunchon Nat'l Univ.)
Jeon, Jun-Young (Dept. of Mechanical Engineering, Korea Univ.)
Kim, Yun-Jae (Dept. of Mechanical Engineering, Korea Univ.)

Publication Information

Transactions of the Korean Society of Mechanical Engineers A / v.39, no.3, 2015 , pp. 269-273 More about this Journal

Abstract

The study investigated the effect of the distance between two collinear circumferential surface cracks on the primary stress corrosion crack (PWSCC) growth in alloy 600TT steam generator tubes using a finite element damage analysis based on the PWSCC initiation model and macroscopic phenomenological damage mechanics approach. The damage analysis method was verified by comparing the results to the previous study results. The verified method was applied to collinear circumferential surface PWSCCs. As a result, it was found that the collinear cracks showed earlier coalescence and penetration times than the a single crack, and the times increased with the distance. In addition, it is expected that penetration may occur before coalescence of two cracks if they are more than a specific distance apart.

Keywords

Alloy 600TT; Steam Generator Tubes; Collinear Circumferential Surface PWSCC; Growth Behavior; Damage Mechanics; PWSCC Initiation Model; Finite Element Analysis;

Citations & Related Records

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