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VERSION:2.0
METHOD:PUBLISH
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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 7
SUMMARY:Comparison of MEMS and piezoelectric accelerometers for impact detection in low-speed bearing applications
DESCRIPTION:"Bearing defects of low-speed bearings are difficult to detect with traditional vibration analysis because the energy generated from these defects is often insufficient to show a measurable change in the acceleration signature. Therefore, these applications require special techniques such as the shock pulse method (SPM) or ultrasonic resonance excitation (URE) to accurately quantify the health status of an asset.  These techniques rely on the impacting nature of bearing defects to excite an accelerometer at resonance which amplifies the measurability of the defect. Conventionally, SPM and URE techniques have utilized piezoelectric accelerometers. However, MEMS accelerometers warrant investigation for their recent advances in noise performance and impact detection at low frequencies. 

This paper compares MEMS and piezoelectric accelerometers for low-speed bearing applications. First, the impulse response of both sensor types is characterized. Then, the performance of each sensor is experimentally quantified by measuring known bearing faults.  Finally, sensors are used in a real-world application on a ladle turret to classify the operating condition of the asset. Overall, this work shows how MEMS accelerometers can increase the detectability of bearing defects in critical low-speed applications. "

CLASS:PUBLIC
DTSTART:20230615T141000
DTEND:20230615T143000
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