Muhammad F. Yaqub and Iqbal Gondal and Joarder Kamruzzaman
MultiplePoints Fault Signature&039;s Dynamics Modeling for Bearing Defect Frequencies
2541 - 2546
2011
5
11
International Journal of Mechanical and Mechatronics Engineering
https://publications.waset.org/pdf/15172
https://publications.waset.org/vol/59
World Academy of Science, Engineering and Technology
Occurrence of a multiplepoints fault in machine operations could result in exhibiting complex fault signatures, which could result in lowering fault diagnosis accuracy. In this study, a multiplepoints defect model (MPDM) is proposed which can simulate fault signatures dynamics for npoints bearing faults. Furthermore, this study identifies that in case of multiplepoints fault in the rotary machine, the location of the dominant component of defect frequency shifts depending upon the relative location of the fault points which could mislead the fault diagnostic model to inaccurate detections. Analytical and experimental results are presented to characterize and validate the variation in the dominant component of defect frequency. Based on envelop detection analysis, a modification is recommended in the existing fault diagnostic models to consider the multiples of defect frequency rather than only considering the frequency spectrum at the defect frequency in order to incorporate the impact of multiple points fault.
Open Science Index 59, 2011