Wavelet Packet-Transform for Defect Severity Classification
Once a defect is detected, the next question that comes up naturally is how severe the defect is. Since machine downtime is physically rooted in the progressive degradation of defects within the machine’s components, accurate assessment of the severity of defect is critically important in terms of providing input to adjusting the maintenance schedule and minimizing machine downtime. This chapter describes how wavelet packet transform (WPT)-based techniques can classify machine defect severity, with specific application to rolling bearings.
KeywordsFeature Vector Wavelet Packet Defect Severity Scatter Matrix Wavelet Packet Transform
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