Wear Particle Analysis Results for Variably Loaded Single Reduction Helical Gearboxes
PENNSYLVANIA STATE UNIV STATE COLLEGE APPLIED RESEARCH LAB
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The Mechanical Diagnostic Test Bed MDTB was constructed as a multisensor instrumented geartransmission test stand by the Pennsylvania State University in the area of Condition-Based Maintenance CBM. The MDTB data acquisition system is capable of recording using PC-LabWindows transitional run-to-failure data sets from a variety of commensurate and non-commensurate vibration, oil, temperature, and acoustic emission sensors. Off-line JOAP oil analysis results ferrography for samples collected from industrial grade off-the-shelf single-pair helical gearboxes subjected to sustained output loads of 2-3 times their rated maximum torque are presented. The off-line oil ferrography results indicated a much higher sliding and cutting wear particle content for the higher loaded 3X maximum torque experiments. This agrees with intuition. One of the goals of this research is to fuse oil sensor information on lubricant condition in an on-line manner with vibration accelerometer data as well as with acoustic emission and thermographic sensor data in order to effectively detect developing or incipient faults, and to predict with confidence bounds the remaining useful life of the system gearbox.