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Military & Defense Vibration Testing

Vibration testing is critical due to the high stakes involved and almost always demanded on military hardware supplied to defense contractors and government entities ensuring the durability of components, electronics and assemblies.

Applicable Defense Vibration Control Software

SINE

Enter two values out of the four between Acceleration, Frequency, Velocity, or Displacement, and the calculator will do the rest.

RANDOM

Run Controlled spectrum random tests (tests with a spectrally shaped gaussian amplitude distribution).

SINE-ON-RANDOM

Run mixed-mode tests with sine tones superimposed on a random background.

RANDOM-ON-RANDOM

Run controlled spectrum random tests with swept random “tones” superimposed on a random background.

SHOCK

Run standard classical shock pulses as well as (optional) user-defined or SRS synthesized transient pulses.

SHOCK RESPONSE SPECTRUM (SRS)

Perform Shock Response Spectrum (SRS) analysis. Run a shock pulse defined by a frequency vs. G peak table.

Copy > Paste with Excel & Word in VibrationVIEW

Copy & Paste Vibration Test Profiles and Graphs into and out of Microsoft Word & Excel. This is especially useful when sharing profiles with colleagues or entering from a customer or even those lengthy and difficult test profiles.

Full VibrationVIEW Software Package

laptop with VibrationVIEW

Commonly Used Defense Test Specifications

MIL-STD-810G
MIL-STD-810H
MIL-STD-167-1A
MIL-STD-202H
MIL-STD-833
MIL-STD-750
MIL-STD-1344A
DEF STAN 00-35
DEF STAN 00-08-123
NATO AECTP-400

Shock & Vibration MIL-STD Testing

Military and Defense equipment must be able to withstand some of the harshest environments on earth. Vibration Research solutions address acceleration, shock and transport shock, gunfire vibration and random vibration. Version ‘H’ emphasizes a tailored approach for environmental testing, focused on ensuring that systems will be able to withstand the harsh climatic, shock and vibration environments expected during a service lifetime.

We’ve already spent significant time with MIL-STD-810H, working to put the new test profiles into the current version of VibrationVIEW software. MIL-STD-810G was previously installed a number of versions ago.

 

Mixed-Mode Vibration Testing

Mixed-Mode vibration testing typically involves Sine-on-Random and Sine-on-Sine for Military and Defense purposes. Here is a typical gunfire Sine Vibration:

  • Sweep from 0.95 to 1.05 of the harmonic center frequency at a sweep rate of 0.5 octave/min (7.5 min per frequency)
  • For harmonic frequencies 66, 132, 198, 263 Hz
  • 5G maximum acceleration
  • Test capability permitting- to minimize test time and enhance gunfire vibration simulation, conduct 2 or more sine dwells (“smokestacks”) concurrently in a phase-uncorrelated manner

Using Data to Improve SRS Development

Shock Response Spectra (SRS) testing uses a synthesized pulse to drive a shaker, simulating a transient event. Originally developed to replicate Seismic shocks, the SRS approach is also widely used for defense and aerospace applications.

SRS White Paper

Dual Axis with Phase Control

Test oversized products using Dual Axis with Phase.

Dual Loop control is achieved by using the two outputs from one VR9500 Revolution controller hardware unit. The drive output and the aux (COLA) output are both used to drive different shakers. The same profile drives both shakers.

Vibration Control Compatibility

VR’s vibration controller and vibration control software are comparable with any electrodynamic or servohydraulic shaker. Even better, our controller comes with a lifetime hardware warranty when your maintenance is current. Try one out for free with ALL software enabled today!

VR Controller Options

Military & Defense Companies Using VR Products

       

       

Short Duration Random Launch Application

iDOF WhitepaperToo often, vibration tests are run to “force fit” a smooth line by running them at a low level (below demand) and taking that averaged PSD and simply multiplying it by a factor to bring it to full level. This method is invalid as it’s based on the false assumption that the behaviors of a product at a high level would exactly mimic that of it at a low level. This vibration testing protocol is unfortunately very common and is exactly why high value products are over and under tested.

Harness the exactness, efficiencies and peace-of-mind that iDOF now offers to vibration control practitioners.

Data Acquisition & Analysis Applications Summary

  • Event Triggering
  • Transient Capture
  • Flight Recording
  • Whole Vehicle Vibration
  • GPS
  • In-vehicle Data Acquisition
  • Submarine Components
  • Helicopter and Jet Vibration
  • Video/Data Synchronization
  • Order Tracking Analysis
  • PSD Analysis
  • FFT Analysis
  • And more…

Full Analysis Software List

Vibration Control Applications Summary

  • Submarine Components
  • Helicopter and Jet Vibration
  • Random shake testing
  • Drop-Shock Testing
  • Classical Shock Testing
  • Swept-Sine Testing
  • Pyrotechnic SRS Testing
  • Flight Simulation Testing
  • Launch Simulation Testing
  • Component Durability & Fatigue
  • Dual Axis
  • Vehicle Dynamic Strain
  • And more…

Full Control Software List

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