Manufacturing intentional crack welding’s defect welding
to do research in mechanical properties and to train NDT
operator is a real challenge in practice. At present,
experiments in specimens of welding with cracking defect
are mainly conducted by: stressing two different tensile
strength electrodes and the “allocating” of the welding lines
(a process of welding in which a welding line was made on
one side of the welded bars, then another line was made on
the other side; this way of welding turn was adopted until the
bars were fully welded) mechanical processing, EDM
notching, adding bronze to create cracks… [4, 8]. In general
there are still some defects with the cracks created by the
just-mentioned-methods: some of them are the complexity of
the process, the unresponsiveness to the NDT technique as
realistic crack defects, and high cost
Manufacturing intentional crack welding’s defect weldingto do research in mechanical properties and to train NDToperator is a real challenge in practice. At present,experiments in specimens of welding with cracking defectare mainly conducted by: stressing two different tensilestrength electrodes and the “allocating” of the welding lines(a process of welding in which a welding line was made onone side of the welded bars, then another line was made onthe other side; this way of welding turn was adopted until thebars were fully welded) mechanical processing, EDMnotching, adding bronze to create cracks… [4, 8]. In generalthere are still some defects with the cracks created by thejust-mentioned-methods: some of them are the complexity ofthe process, the unresponsiveness to the NDT technique asrealistic crack defects, and high cost
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