爆接軟鋼クラッドの残留応力

概要

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To explore residual stress patterns resulting from explosive bonding, macro-residual biaxial stresses perpendicular to and along to explosion direction have been measured on explosive clad made from two similar mild steel plates. Testing techniques are based on cutting out blocks from the clad, etching off successive thin layers of each block, and, in these procedures for stress release, measuring biaxial strains in it, from which residual stresses can be calculated (Fig. 1). The results show that residual stresses relieved by cutting out are much smaller than those relieved by etching off (Fig. 7 & 9). Also, two stresses perpendicular to each other are about the same independent of the explosion direction, but vary at different points in clad (Fig. 9). Residual stresses have mostly tensile values of approximately 0 to 20kg/(mm)^2 throughout clad metal and bonded zone, and, at some points, amount to about the yield point of clad metal or conversely compressive values (Fig. 11).
社団法人溶接学会の論文
1970-09-25