Estimation of fracture toughness K_IC from Charpy impact test data in T-welded connections repaired by grinding and wet welding

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• 作者：G. Terá ; n^a ; ^{gerardoteranm@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; S. Capula-Colindres^b ; ^{selenecapula@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; D. Angeles-Herrera^c ; ^{daherrera@imp.mx" class="auth_mail" title="E-mail the corresponding author} ; J.C. Velá ; zquez^a ; ^{jcva8008@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; M. J. Ferná ; ndez-Cueto^d ; ^{martinjfc@yahoo.com.mx" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Stress intensity factor ; Charpy V-notch ; Porosity ; Grinding ; Wet welding
• 刊名：Engineering Fracture Mechanics
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：153
• 期：Complete
• 页码：351-359
• 全文大小：812 K

文摘

This work presents, for the first time, and estimation of fracture toughness K_IC correlations from Charpy V-notch (CVN) impact test data extracted from T-welded connections repaired with rectangular grinding and filled by wet welding. To obtain K_IC values, equations based on the yield stress (σ_YS) of the wet welding beads were used. The estimated K_IC data decreased with increasing water depth. These two characteristics (porosity and microstructures for low carbon steels) did not improve the mechanical properties, such as Charpy impact and K_IC values.