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The VIC-3D HSVA System

Non-Contact Full-Field ODS and Strain Measurement System

Technology Overview

The VIC-3D™ High Speed Vibration Analysis (VIC-3D HSVA) System by Correlated Solutions, Inc. is a new addition to the Vic-3D product line of measurement solutions which enables full-field 3D viewing, measurement, and analysis of full-field operational deflection shapes (ODS’s) which occur from transient events.  ODS’s in the frequency domain can easily be viewed and analyzed with levels of accuracy in the nanometer range.  Three-dimensional displacements, strains, velocities, and accelerations are all computed for thousands of data points for any given frequency.  The result is not only visual, but users can export the data for FEA analysis and validation.

Application Example

An example of the system’s results are seen below.  An thin 8″ x 10″ aluminum plate suspended with rubber bands was tapped from behind with a small hammer.  The impact produced the following shapes:

All ODS SS

To see another test, you can check out the brake rotor example on our Applications Page.

Vs. traditional measurement techniques

  • Non-contact measurements– Since the HVSA System provides non-contact full-field vibration analysis of components under dynamic or transient load, it circumvents the problems associated with the conventional sensors such as debonding or becoming damaged during the event (especially transient and shock loading), sensors adding mass to the test component, noise, and cable management.
  • Full-field data– Point selection can be overlooked completely!  Unknown nodes are easily discovered and displayed during post-processing.  This means that no pretesting is necessary to ensure reliable results.
  • 3D Results– Since the HSVA system always measures in all three axes, orienting multiple single axis accelerometers or using pricey bi-axial or tri-axial accelerometers are no longer required.
  • Integrated strain and displacement dataFull-field strain, deformation, and shape variables are automatically produced along with frequency and amplitude data.
  • No Windows– The windowing processing has been described as a “necessary evil” by ODS experts in the field.  With the HSVA system, no windows are used, giving the ODS analyst confidence that leakage has not occurred.

With the VIC-3D HSVA system, there are no adhesives, wires, signal analyzers, power amplifiers, or load cells necessary for detailed ODS results.  Obtaining data for a tiny, complex structure or a very large one is faster and easier than changing a pair of lenses.

 

Vs. single point laser vibrometers

  • 3D Results– Since the HSVA system always measures in all three axes, 3D results are obtained with each test.
  • Simple procedures– Very large structures can be measured in only a single transient test.  The cameras do not need to be moved or repositioned at all to acquire additional data from the specimen.
  • Faster acquisition– With the HSVA system, amplitude does not affect acquisition time.  Even on very large structures with very large amplitudes, full-field data acquisition time requires only seconds.
  • Integrated strain and displacement dataFull-field strain, deformation, and shape variables are automatically produced along with frequency and amplitude data.

Single point laser vibrometers are not as robust as the HSVA system.  Full-field 3D data can be acquired very quickly and with very little setup and testing time.

 

Vs. scanning laser vibrometers

  • Smaller equipment– The cameras used for the HSVA system fit on a single tripod, which makes the system quite portable.  Moving your 3D vibration measurement system from lab to lab or out to the field for testing has never been easier.
  • Smaller price– Even the most expensive HSVA system will be a fraction of the price of a 3D laser scanning vibrometer system.
  • Faster acquisition– With the HSVA system, amplitude does not affect acquisition time.  Even on very large structures with very large amplitudes, full-field data acquisition time requires only seconds.
  • Integrated strain and displacement dataFull-field strain, deformation, and shape variables are automatically produced along with frequency and amplitude data.

Scanning laser vibrometers provide measurements in 3D, but are quite bulky and very expensive.  When compared to acquiring measurements with DIC, you can look forward to more compact equipment at a smaller price.

System Features

  • View, compare, animate, graph, extract, and export data for easy FEA comparison
  • Measure 3D full-field, high frequency (50kHz max) operational deflection shapes with nanometer resolution
  • Measure extremely low amplitudes with extremely high accelerations
  • Measure extremely high amplitudes with low accelerations
  • Full-field strain, deformation, and shape variables are still available
  • Easy procedures, accurate results
  • User friendly interface
  • Only a fraction of the price of a laser vibrometer system

Other practical applications for the VIC-3D HSVA System include:

  • Explosive Testing
  • Door Slams
  • Run-ups/Run-downs
  • Shake Testing
  • Drop Testing

Links

View the brake rotor example on our Applications Page

Learn how the HSVA module can be used in conjunction with the Fulcrum module here.

Download the VIC-3D HS Vibration Analysis flyer.

Please contact Sales@correlatedsolutions.com or visit our Contact Us page for your quotation today.

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