In Part 2 of this paper, three applications of automated monitoring of manufacturing processes are presented to demonstrate the use of monitoring methods discussed in Part 1 of the paper. These applications are: (1) tool condition monitoring in turning, (2) machining condition monitoring in tapping, and (3) metallographic condition monitoring in arc welding. For each application, a background review, monitoring index selection and experimental setup are first presented. Then, monitoring methods discussed in Part 1 of the paper were applied and the test results are investigated. Discussions of the monitoring success rate, sensitivity, robustness, monitoring index selection, and decision under uncertainty are also included.
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