On-line diagnosis of marine diesel crankshaft crack based on magnetic memory
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The recent diagnosis methods of marine diesel crankshaft crack are summarized. The fundamental principle, development and application of metal magnetic memory testing (MMMT) diagnosis technology are introduced. Compared with other methods, a scheme developed from MMMT combined with torsional signal to make on-line diagnosis of crankshaft crack is proposed, and an on-line diagnosis experimental platform of diesel is designed. Finally, comments are also made on the on-line MMMT method.