This research aims to analyze the vibration response of damaged rolling element bearings\nexperimentally and to assess their degree of degradation by examining parameters extracted from\nthe time domain. This task was accomplished in three phases. In the first phase, a test rig was\ncarefully designed and precisely manufactured. In particular, an innovative solution for rapidly\nmounting and dismounting bearings on the supporting shaft was tested and used successfully. In the\nsecond phase, a specific technique of seeding defects inside the ball bearings was developed. In the\nlast phase, damaged bearings (and healthy ones serving as a reference) were installed on the test\nrig, and different vibration measurements were taken. The results obtained from this work show\nthat different parameters could be extracted from the time domain. In addition to the six common\nindicators (peak, root mean square, crest factor, kurtosis value, impulse factor, and shape factor),\nfour hybrid new ones have been proposed (Talaf, Thikat, Siana and, Inthar). The experimental results\nconfirm the well-known efficiency of kurtosis in the detection of bearing defects. However, the newly\nproposed parameters were found to be more responsive to defect growth.
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