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- W1978271504 abstract "Over the last few decades, the research for new fault detection and diagnosis techniques in machining processes and rotating machinery has attracted increasing interest worldwide. This development was mainly stimulated by the rapid advance in industrial technologies and the increase in complexity of machining and machinery systems. In this study, the discrete hidden Markov model (HMM) is applied to detect and diagnose mechanical faults. The technique is tested and validated successfully using two scenarios: tool wear/fracture and bearing faults. In the first case the model correctly detected the state of the tool (i.e., sharp, worn, or broken) whereas in the second application, the model classified the severity of the fault seeded in two different engine bearings. The success rate obtained in our tests for fault severity classification was above 95%. In addition to the fault severity, a location index was developed to determine the fault location. This index has been applied to determine the location (inner race, ball, or outer race) of a bearing fault with an average success rate of 96%. The training time required to develop the HMMs was less than 5 s in both the monitoring cases." @default.
- W1978271504 created "2016-06-24" @default.
- W1978271504 creator A5021434848 @default.
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- W1978271504 date "2011-08-01" @default.
- W1978271504 modified "2023-10-16" @default.
- W1978271504 title "Detection and diagnosis of bearing and cutting tool faults using hidden Markov models" @default.
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- W1978271504 doi "https://doi.org/10.1016/j.ymssp.2011.01.013" @default.
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