Bearing Prognostics Simulator (BPS)

Innovative Platform for Bearing Prognostics

Research

28201 Hermitage Rd, Richmond, VA 23228 1-804-261-3300 www.spectraquest.com

Bearing Prognostics Simulator

Conduct fundamental research in bearing wear evolution.

Characterize bearing failure mechanisms for developing a prognostics model.

Study frictional force between the bearing rotating and stationary components.

Model remaining bearing life based on routine condition monitoring measurement.

Bearing Prognostics SimulatorConfigurations

Bearing TypeRollingFluidGrease lubricated

Drive TypeVariable speed induction AC motorStepper motor of oscillatory motion

Rolling with Stepper

Fluid with AC

BPS Benefits

Develop model for damage propagation mechanisms of rolling element bearings, pressurized fluid film bearings, and the grease lubricated bearingsUnderstand bearing failure mechanisms as a function of load, rotational speed, and the oscillatory motion of the bearingDevelop predictive models of the bearing remaining life based ondamage evolution, operating speed, amplitude and type of the loadingResearch signal processing techniques and sensor types for condition monitoring of bearings for prognosticsStudy correlation among vibration, motor current, load, friction and noise spectra. Verify model-based diagnostics/prognostics algorithms

BPS Features

Modular, robust and versatile bench top device for conducting bearing prognostics research Simultaneous measurement of radial or axial bearing load and friction torqueSmart friction torque transducer designed for measuring small friction load in presence of heavy applied forceFully programmable motor input parameters for constant speed andfor oscillatory motion with and without rotational speed Configurable to test rolling element bearing, grease lubricated bearing, and fluid film bearing in one unitInterchangeable variable speed AC motor and servo stepper motor for applying different types of loadingsInstrumented easy to operate hydraulic bearing loading systemEasy installation and removal of test bearing

Test Bearing Setup

Configured overhung and are supported on two rows of heavy duty rolling element bearings.

A fluid film support bearing system can be provided.

Designed for easy test bearing access.

The overhung configuration is selected for ease of loading the bearings and the measurement of the frictional torque generated during the test.

Force Transducer

Measure the transverse and/or axial load applied to the test bearing.Investigate force load fluctuation through the rotating cycle caused by worn bearings.Determine force response to oscillating torsional loading.Perform signature analysis as a function of wear damage growth.Up to 6000lb transverse load.

Measured force with oscillating load

Friction Torque Transducer

Study characteristics of the frictional force between rotating and the stationary components.Research friction bearing wear evolution.Cancels the torque associated with the bending forces and minimize the effects of supporting structure. Measure bearing frictional torque information as a function of damage growth.

Measured friction during motor rampup and rampdown

Stepper Motor Drive

Study bearing wear patterns under oscillatory loading.Investigate bearing response to fluctuating loading.Three operation modes:

constant rotational speed, oscillatory motion, oscillatory excitation superimposed on rotation.

Stepper Motor Drive

Oscillation0.225 to 360 degreesControllable oscillation frequency, amplitude, and step speed

Rotation + OscillationChanges rotation speed at a given period0-180rpm (with no load)Controllable oscillation and rotation frequency

Option Kits

SpectraQuest offers a complete array of option kits enabling detailed investigations of particular and more advance vibration phenomena or machinery faults.

BP-COVImpact resistant clear safety cover

BP-OILOil-lubricated support bearings

BP-AFTAxial force transducer

BP-AXLAxial force loader

BP-GRGrease lubricated bearing

BP-STEPStepper motor

BP-FTTFriction torque transducer

BP-TFTTransverse force transducer

Transverse Force Transducer (BP-TFT)

Measure the transverse load applied to the test bearing.Investigate transverse force load fluctuation through the rotating cycle caused by worn bearings.Determine transverse force response to oscillating torsional loading.Perform signature analysis as a function of wear damage growth.The kit consists of one axial force transducer and one signal conditioner

Friction Torque Transducer (BP-FTT)

Study characteristics of the frictional force between rotating and the stationary components.Research friction bearing wear evolution.The kit consists of friction torque transducer, a torque bridge, and a signal conditioner

Grease Lubricated Bearing (BP-GR)

Conduct fundamental research in grease lubricated bearing wear evolution.Develop model for damage propagation mechanisms.Verify model-based diagnostics/prognostics algorithms.The kit consists of grease lubricated bearing, hub, and mounting hardware.

Stepper Motor (BP-STEP)

Study bearing wear patterns under oscillatory loading.Investigate bearing response to fluctuating loading.The kit consists of stepper motor, a controller, and an encoder

Axial Force Loader (BP-AXL)

Study and model bearing wear under axial loading.The kit consists of one axial loader and mounting hardware

Axial Force Transducer (BP-AFT)

Measure the axial load on the main shaft under dynamic excitation.Learn phase relationship between force and vibration spectrum.Study axial force response to rotating speed and transverse loading.Verify and refine your rotor dynamic models and enhance modeling skills.The kit consists of one axial force transducer and one signal conditioner.

Oil-Lubricated Support Bearings (BP-OIL)

Reduce vibration signature from the BPS support bearings to improve signal clarity of the test bearing.The kit consists of fluid-film support bearings, mounting hardware, and oil distribution system with pump, pressure gage, stainless steel oil tank, back flow safety switch, and pressure interlock gauge.

Impact Resistant Clear Safety Cover (BP-COV)

For increased safety, lockable clear, impact resistant hinged plastic cover with motor interlock switch to shut down motor when cover is raised.The kit consists of one lexan safety cover

Specifications

Rolling Element Bearing: 1” (25.4 mm)Test bearing

Diameter: 2”, (50.8 mm )Support shaft

10lb.ft (14N.m) with controllerDrive

0-180rpm (with no load) RPM range

L= 40” (102cm), W= 24” (61cm) , H= 30” (76cm)Dimension

Approximately 250 lbWeight

Physical

1/2” (12.7 mm) die cast aluminum base with removable stiffeners and six rubber isolators

Foundation

Manually adjustable, up to 6000 lb (~27 KN)Hydraulic Loading

Fluid Film Bearing: 0.75 ” (19.08 mm)Dimensions

Mechanical115/230 VAC, Single phase, 60/50 HzVoltage

Stepper Motor115/230 VAC, Single phase, 60/50 HzVoltage

0 to 3600 variable speedRPM range

3 HP, 3 Phase Variable Speed ACDrive

AC Motor

Bearing Prognostics Simulator (BPS)

Education

Transcript of Bearing Prognostics Simulator (BPS)

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