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Basic Level 3
Crater cracks may take the form of a single crack or starshaped cracks and will usually be found:
by magnetic particle techniques since crater cracks are always subsurface.
anywhere along a weld where the welding was stopped and restarted.
in the natural crater formed between the two plates in a typical fillet wel
in the root area of a multiple-pass weld where the weld metal failed to flow completely into the root opening.
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