Abstract:In this paper, the J-R curves of two cracks (A508 HAZ crack 2 and A508/Alloy52Mb interface crack 3) located at the weakest region in an Alloy52M dissimilar metal welded joint (DMWJ) for connecting pipe-nozzle of nuclear pressure vessel have been measured by using single edge-notched bend (SENB) specimens with different crack depths a/W (different constraint). Based on the modified T-stress constraint parameter τ*, the equations of constraint-dependent J-R curves for the crack 2 and crack 3 were obtained. The p… Show more
“…The results showed that the proposed equation resulting from the parametric analysis could be employed to predict the static burst pressure of cylindrical shell intersections for a wide range of geometric ratios. Wang et al [211] obtained the equations of constraint-dependent J-R curves for the cracks of a dissimilar metal welded joint for connecting pipe-nozzle of nuclear pressure vessel. Different constraint equations derived from the three pairs of crack growth amount all agree with the experimental J-R curves.…”
“…The results showed that the proposed equation resulting from the parametric analysis could be employed to predict the static burst pressure of cylindrical shell intersections for a wide range of geometric ratios. Wang et al [211] obtained the equations of constraint-dependent J-R curves for the cracks of a dissimilar metal welded joint for connecting pipe-nozzle of nuclear pressure vessel. Different constraint equations derived from the three pairs of crack growth amount all agree with the experimental J-R curves.…”
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