Useful Links

1. Machinery Fault Simulator(MFS)

* Motor 3 Phase, 1 HP motor with pre-wired self-aligning mounting system for easy installation/removal
* Drive 1 HP variable frequency AC drive with multi-featured programmable controller
* RPM range 0 to 6000 rpm with variable speed
* Power leads accessible for current measurements
* Built-in tachometer with LCD display and one pulse per revolution analog TTL output for DAQ purposes









2. Electro Dynamic Shaker

*Nominal Force: 400 Kgf (peak Sine), 280 Kgf (rmsRandom)
*Frequency Range of operation: Frequency range 1Hz to 3500 Hz
*Maximum Displacement: >38 mm
*Payload capacity: >150 kg with internal pneumatic support











3. Active Vibration Control System

Sensors:
* Piezoelectric
* Magnetostricitive
* Strain Guages
* Electromagnetic


Actuators:
* Piezoelectric
* Electro rheological
* Magneto-rheological
* Magnetostrictive
* Shape Memory Alloy
* Electromagnetic

 








4. Vibration-Exciter

* Calibration of accelerometers
* Vibration testing of small objects
* Educational demonstrations
* Mechanical impedance and mobility measurements













5. Piezoamplifier

* Ultraprecise positioning
* Generation of very high acceleration rates,fast mechanical switching
* Generation of high frequency motions
* Generation of very high static and dynamic forces
* No electrical energy required under static conditions














6. Whirling of Shafts

*The tail end bearing should slides in its housing to allow the shaft length to change as it „whirls.
*Extra bearings should be supplied so that it restrict angular movement when fitted, to give „fixed ends.
*Two movable nylon bushes to prevent the shaft whirling amplitude from reaching excessive levels.
*There should be sensors at the driven end measures the shaft speed and sends its signal to the Control and Instrumentation Unit display






6.1. Digital Tachometer

* Dimensions: Nett: 200 mm x 170 mm x 60 mm; packed:0.011 m3
* Weight: Nett: 1.5 kg; packed 2.5 kg
* Range: 0 to 10 000 rev.min-1
* Resolution: 1 rev.min-1








7. B&K Hand Held Analyzer 2250

*Hand-held Analyzer Type 2250, with Sound Level Meter Software BZ-7222,
* Frequency Analysis Software BZ-7223, Logging Software BZ-7224
* Enhanced Logging Software BZ-7225 and Sound Recording Option BZ-7226












8. Microphones

* Optimize audio transducers for optimum sound quality, device size, industrial applicability,
* Backplate support structure, and electrical shielding of the microphone
* Structure has been designed to be assembled with the rest of the commercial product,








9. Lab View 2009 with different Modules

* New Data Value Reference/In Place Element Structure
* Parallel For Loop/Analysis Tool/CPU Palette
* Command-Line Differencing for Source Code Control Integration





10. Learning Management System(LMS) Software

*Centralize and automate administration
* Use self-service and self-guided services
* Assemble and deliver learning content rapidly




11. Vibration Fundamental Trainer

* Pendulum Vibration Module
* Mass-Spring System with Horizontal and Vertical Arrangement
* Torsional vibration of Rods with Vertical and Horizontal Arrangement
* Data Acquisition and Analysis Instrumentation
* Vibration Simulation/Animation









11.1. Spring Mass Damper Module

* DOF free and forced vibration, with or without damping
* Damping effect comparisons and measurement of viscous fluid
* Rotating unbalance
* Base excitation
* Frequency Response Function (FRF) measurement
* Displacement and force transmissibility











11.2. Spring Mass Damper Module

* 3 different stiffness springs, stackable for 2 DOF
* 3 stackable mass blocks
* 1 dashpot with 3 types of viscous fluid
* 1 proximity probe for displacement vibration measurement
* 1 unbalanced motor with controller for excitation
* 1 force transducer for transmissibility study (optional)











11.3. Torsional Vibration Module

* DOF free and forced vibration, with or without damping
* Damping effect comparisons and measurement of viscous fluid
* Frequency Response Function (FRF) measurement












11.4. Beam Vibration Module

* First three natural frequency and modal shape
* Free and forced vibration response
* Influence of boundary condition: cantilever, simply supported, overhung
* Influence of beam length
* Operating Deflection Shape (ODS) study









11.5. Simulation/Animation Software

* Basic concepts simulated in user selected input parameters
* Vivid visualization to enhance learning and clarification
* Input condition controllable by user
* Topics Covered:
1.Simple harmonic motion as represented by a Spring-Mass system
2.Sinusoidal relationship of amplitude, velocity and acceleration
3.Mathematical modeling of dynamical system using equivalent mass and spring
4.Free vibration of undamped, underdamped and overdamped systems
5.Logarithmic decrement
6.Harmonic excitation of undamped, underdamped systems
7.Frequency response function
8.Rotating Unbalance



11.6. DAQ and Analysis Software

* 8 simultaneous channels DAQ hardware
* Excitation motor control fully integrated with DAQ, capable of sine sweeping
* Time waveform, spectrum, and frequency response signal analysis
* Pre-defined experimental and data collection for easy setup or fully customizable data collection








Attachments of Machinery Fault Simulator(MFS Contd…)

1.1. (MFS Contd…) Direct Driven Reciprocating Mechanism

* Study reciprocating mechanism vibration signatures without gearbox, belt, shaft or bearing imprint.
* The kit consists of all hardware needed to mount the reciprocating mechanism directly the AC motor
* Requires M-BDGB and M-RMS










1.2. (MFS Contd…) Direct Driven Centrifugal Pump

* Study centrifugal pump vibration signatures without belt, shaft or bearing imprint.
* The kit consists of all hardware needed to mount the centrifugal pump directly the AC motor
* Requires M-CFPK










1.3. (MFS Contd…) Direct Driven Reciprocating Compressor

* Learn the sound and vibration signatures of compressor housing, valves, and other structural components.
* Develop diagnosis techniques for reciprocating compressors.
* Learn the reciprocating compressor performance.
* Study the pressure pulsation and the effects of discharge pressure on the behavior of the compressor.
* The kit consists of one ½ HP compressor, one 5-gallon air tank with flow controls, all needed piping and mounting hardware.
* Requires M-BDGB







1.4. Oil whirl/whip in-depth study kit for 3/4″ shaft

* Study the effect of stiffer rotor on oil induced instability and understand whirl/whip
phenomena and how to avoid it. The idea is to understand and control the whirl/whip
phenomena. 3/4″ shaft provides not only stiffer rotor but also lighter balance,
eccentric and cocked disks for more investigation to enhance the understanding.
* The kit consists total of four sleeve bearing pairs to give bearing clearances of 6 mils (0.001′)
for two different lengths(2 pairs) & 2 mils for one length (1 pair) ,and elliptical
bearings (1 pair) to avoid whirl/whip instability, and one shaft centering device







1.5. Rolling Bearing Resonance/Critical Study Kit (M-RSK-1/2)

* Study resonance and critical speed phenomena, at speeds below 2000 RPM to simulate real world operating conditions while improving safety. The standard ¾” shaft has a high resonance frequency, 7000 RPM or more depending on rotor positions.
* Study damaging effects of resonance and develop control methods.
* Relocate rotors and supports to study the effects of mass and stiffness on resonance frequencies and mode shapes.
* Study beating due to closely spaced modes.
* Study non-linear dynamics for chaos modeling.
* The kit consists of one ½” shaft, three rotors, two rolling element bearings, and one coupling



1.6.   1" Shaft Bearing Study Kit

* Study bearing fault frequencies away from multiples rotational speed. The standard ¾” shaft exhibit fault frequencies close to multiples rotational speed, requiring ultra high resolution spectra to clearly identify bearing fault frequencies.
* Identify bearing fault frequencies in the presence of defects at multiples of shaft speed without using high-resolution spectra.
* Understand the signal processing issues such as averaging, spectral resolution, and leakage phenomena.
* The kit consists of two split bearing housings, two 1” inside diameter bearings, one 1” shaft, and one coupling.





1.7.   3/4″ and 1" bearing faulty Kit (M-BFK -3/4 and M-BFK-1)

* Learn waveform and spectra of classic bearing defects.
* Learn about signal processing issues such as averaging techniques, leakage, and spectral resolution on determining bearing faults. * Perform experiments with increasing severity of defects.
* Determine why an ultra-high resolution spectrum is needed to diagnose a bearing fault when fault frequencies are located close to multiples rotational speed.
* Learn how a large signal can mask adjoining low amplitude signal due to spectra leakage.
* The kit consists of one inner race defect, one outer race defect, one with ball defect, and one combination of defects.






1.8. Multi-Belt Drive, Straight Tooth Gearbox and Adjustable Particle Magnetic Break System

* Learn sheave misalignment and belt tension effects on vibration, and belt fault frequencies.
* Learn the effects of load, backlash, and tooth faults on the amplitudes and distribution of the gearmesh and sideband frequencies.
* Develop advanced signal processing techniques such as time synchronous averaging, wavelet analysis, short time Fourier transform for gearbox fault diagnosis.
* Develop expertise to diagnose a gearbox problem under a variable loading(or speed) conditions.
* Learn the effects of the frequency and amplitude modulation on vibration spectra.
* Remove the pinion assembly for backlash adjustment, and fault introduction.
* The kit consists of two V-belts, two double groove sheaves and one rolling tensioner; one three- way oil-lubricated gearbox with straight cut bevel gears, cup and cone roller bearings; and one manually adjustable magnetic braking system.



1.9. Eccentric Sheave (M-ES-3/4)

* Study the effects of eccentric sheaves.
* Distinguish between eccentricity, unbalance, belt resonance.
* The kit consists of one eccentric sheave.
* Requires M-BDGB





1.10 Defective Straight Tooth Gearbox Pinions (M-DGPA)

* Study the effect of damaged tooth in gearboxes.
* Investigate backlash between mating gears.
* The kit consists of one missing tooth pinion and one chipped tooth pinion.
* Requires M-BDGB





1.11 Direct Driven Gearbox Mounting Kit (M-DGBB)

* Study gearbox vibration signatures without belt, shaft or bearing imprint.
* The kit consists of all hardware needed to mount the gearbox directly the AC motor
* Requires M-BDGB






1.12.Reciprocating Mechanism (M-RMS)

* Monitor and diagnose reciprocation and load varying machinery.
* Study torsional vibration measurement techniques.
* Demonstrate the effectiveness of commercial analyzers at tracking speed variation and displaying the results.
* The kit consists of a reciprocating mechanism with two springs, adjustable spring engagement timing, and two stroke settings.
* Requires M-BDGB





1.13 Crack Shaft Study Kit (M-CSRK-3/4)

* Study the effects of crack on the natural frequencies and vibration behavior.
* Develop diagnostic technique to detect crack at early stage.
* Study crack propagation and breathing.
* Apply advanced signal processing techniques, such as wavelet, joint time-frequency analysis, time series analysis, to study the vibration caused by crack.
* The kit consists of one shaft with a 4 ½’’ 4-bolt flange connection to simulate crack, one shaft
with slit crack and filler, and one shaft with a deep V-notch crack.





1.14 Fan Vibration Kit (M-FVK-3/4)

* Learn the sound and vibration signatures of fans.
* Study the effects of volumetric flow rate on pressure rise and fan vibration.
* Develop the noise and vibration control methods on fans.
* The kit consists of one six-blade paddle fan, one ten-blade paddle fan, one 12-blade axial fan, and one axial fan obstruction







1.15 Mechanical Rub Kit (M-MRK)

* Evaluate typical rub phenomena associated with a variety of materials under different angle, loading, and lubricant conditions.
* Experiment rubs on shaft or rotor.
* The kit consists of an adjustable spring-loader rub material holder and four different rub materials









1.16. Centrifugal Pump With Worn Impeller (M-CFPFI)

* Recognize vibration and hydraulic issues associated with a worn pump.
* The kit consists of one worn centrifugal pump with simulated cavitation damage to the head and impeller.
* Requires M-BDGB and M-CFPK







1.17. Reciprocating Compressor Kit (M-RCK)

* Learn the sound and vibration signatures of compressor housing, valves, and other structural components.
*Develop diagnosis techniques for reciprocating compressors.
* Learn the reciprocating compressor performance.
* Study the pressure pulsation and the effects of discharge pressure on the behavior of the compressor.
*The kit consists of one ½ HP compressor, one 5-gallon air tank with flow controls, all needed piping and mounting hardware.
* Requires M-BDGB









1.18. PC Motor Control Kit (M-PCK)

* Operate MFS from remote location.
* Pre-program speed acceleration, deceleration, and length of run to meet exact requirements.
* The kit consists of PC software, one interface module to motor drive and cables.









1.19. Shaft Alignment Kit (M-ATK)

* Align shafts precisely with convenient and simple Windows alignment software.
* Accommodates ½” to 1 ¼” diameter shafts.
* The kit consists of two precision dial indicators, two mounting brackets/bars, one mirror, one set of feeler gauges, and instructions packaged in a rugged plastic case.









1.20. Vertical and Horizontal Bearing Force Transducer for 1/2" to 1" Shafts (M-FTVH)

* Measure forces exerted on bearings due to coupling misalignment, rotor unbalance, belt misalignment, and belt tension.
* Establish quantitative tensions for drive belt studies.
* Learn to relate the vibration signature to forces associated with common malfunctions such as resonance and bearing faults. Learn phase relationship between force and vibration spectrum.
* Learn nature of rotor dynamic forces due to common defects.
* Witness 180 degree phase shift between heavy and high spots when rotor goes through a critical speed. Demonstrate how mass unbalance force quadruples when the speed is doubled, but vibration amplitude does not follow the same trend.
* Verify and refine your rotor dynamic models and enhance modeling skills.
* The kit consists of one transducer simultaneously measuring vertical and horizontal force.




1.21. Belt Drive Mounting Block(M-BDM)

* Learn sheave misalignment and belt tension effects on vibration, and belt fault frequencies without the gearbox imprint.
* Study belt response to variable magnetic brake loading.
* The kit consists of one belt-drive block











1.22. AC Motor with build-in Rotor Unbalance(M-UBM)

* Study the effects of unbalanced rotor on vibration and/or current signature.
* Study the effect of unbalance rotor on power quality and consumption.
* Study the effect of temperature rise on non-linear characteristics of induction motors.
* The kit consists of one unbalanced 1 HP AC motor












1.23. AC Motor with build-in Rotor Misalignment System(M-MAM)

* Learn the effects of coupling stiffness on rotor dynamics and vibration signature.
* Clarify the complexities of machinery shaft misalignment problems (spectral pattern for shaft misalignment is a strong function of coupling stiffness).
* The kit consists of one gear, one LoveJoy, one rubber, and one rigid steel coupling.












1.24. Eccentric Rotor (Requires MR-SCK-3/4)

* Learn the effects of rotor eccentricity on vibration spectra.
* Determine relationships between eccentricity and unbalance.
* Develop techniques to locate and correct the effects of eccentricity.
* Learn the effect of varying the mass moment of inertia on vibration amplitude.







1.25. Cocked Rotor (Requires MR-SCK-3/4)

* Learn the effects of a sheave that has not been fitted to the shaft properly.
* Learn vibration signature of a cocked rotor.
* Develop methods to correct cocked rotor problems.
* Learn the effect of varying the mass moment of inertia on vibration amplitude.







1.26. Coupling Type Set (Requires MR-SCK-3/4) (M-CK-3/4)

* Learn the effects of coupling stiffness on rotor dynamics and vibration signature.
* Clarify the complexities of machinery shaft misalignment problems (spectral pattern for shaft misalignment is a strong function of coupling stiffness).
* The kit consists of one gear, one LoveJoy, one rubber, and one rigid steel coupling.







1.27. Higher Resonance Study Kit (M-RDK-1/2)

* Study rolling element bearings on the MFS-RDS.
* The kit consists of three steel disks.






1.28. Sleeve Bearing Resonance Study Kit (M-SBK-1/2)

* Study resonance and critical speed phenomena in sleeve bearings.
The kit consists of two customized grease-lubricated, babbitt lined sleeve bearings, two bearing pedestals, and various thickness plastic shims Requires M-RSK-1/2






1.29. Cocked Bearing Housing (M-CBM-3/4)

* Recognize the signature of a cocked bearing due to improper seating or due to inconsistent installation.
* The kit consists of one cocked bearing housing.








1.30.  3/4″ shaft bearing loader (Requires MR-SCK -3/4) (M-BL-3/4)

* Investigate bearing radial loading effects.
* Enhance the spectral amplitude of system.
* The kit consists of one 3/4″ bore loader weighting 11lb (5kg) and two clamp collars.






1.31.  3/4″ Shaft Sleeve Bearing (grease lubricated) kit (M-SBK-3/4)

* Investigate waveform and spectral recognition of worn or loose fitting bearings.
* Modify the clearance of the split bearings with plastic shims.
* Perform shaft orbital analysis.
* The kit consists of two customized grease-lubricated, babbitt lined sleeve bearings, two bearing pedestals, and various thickness plastic shims.





1.32. Tektronix A622Current Probes

* Dynamic Frequencies: Poles adjustable 0.4 to 1.2 Hz.
* Actuator: 0.6 N-m Fe-Co brush type.
* Servo amplifiers: 5 Hz current loop bandwidth.
* Size: 30*30*56cm (12*12*22in)