Under the alternate loading, accruing flaw in metal structure is one of faults that happen in metal structure frequently. As the effect of alternate loading, the flaw in the metal structure could develop continuously, and at the beginning, the fatigue flaw is very thin, therefore in this case, detecting flaw seems to be very difficult. As a dynamic non-destructive testing technique, Acoustic emission (AE) signal needs to be acquired under the loading, and it is sensitive to the fault. The fault as small as ...
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