Test Acceleration

Using vibration test acceleration, a product can be tested for years of service in a fraction of the time. The test acceleration generation package includes three industry-leading methods to accelerate test profiles: FDS, SRS, and Vibration Research’s STAG.


FDS LogoFatigue Damage Spectrum

FDS: provides a reliable way for engineers to use real world data to create an accelerated life test representing a lifetime of fatigue damage on a product.

Fatigue Damage Spectrum is random vibration spectrum based on Miner’s Rule of Damage. Miner’s Rule teaches that fatigue damage will accumulate over time until it reaches a level that causes a crack or other deformation of a product. Set your test item target life based on product specifications, as well as test duration. The software automatically calculates ratios that will produce the same amount of fatigue damage in a user-defined test duration.


Shock Response Spectrum (SRS)

SRS: modifies the wavelets that adjust the time history waveform to meet the SRS demand.

The SRS technique is a straightforward way to characterize a shock environment. It also supports defining a test with enveloped data from multiple shock events. SRS allows engineers to better visualize the effects of a shock on a physical system. A designer can see the maximum dynamic load of various components or assemblies of a total system under test as a function of frequency. This can be correlated to the damage potential based on an input response.

Use a synthetic pulse OR a user defined time history waveform as the starting point, then VibrationVIEW will continue to modify the wavelets which adjusts the time history waveform to meet the SRS demand.

  • Minor adjustments made to the original time history
  • Meet or exceed RRS
  • Control on SRS vs. UDT
  • Adjusts wavelets to meet RRS

STAG logoSine Tracking Analysis and Generation (STAG)

STAG: generates Sine on Random tests reflective of environments with dominant rotational tones.

Sine Tracking Analysis and Generation (STAG) generates Sine on Random tests reflective of environments with dominant rotational tones that are rendered as sine tones on a shaker table. STAG is a real-world evaluation for products that may experience these dominant sinusoidal components, such as engine components.

A standard random test cannot accurately replicate real-world environments with dominant rotational components. While it is important to characterize these environments through testing, both the rotational and the random components of the real-world environment must be properly generated and analyzed.

The more accurate option is a combination of sine and random testing. A Sine on Random test can replicate dominant tones and orders as well as produce more consistent results.

The STAG test development procedure allows the user to analyze the order content of a waveform. Using that information the orders can be extracted and sine tone profiles that are easily accelerated can be generated. These accelerated sine tone profiles are then combined with the Fatigue Damage Spectrum analysis of the remaining random content. The STAG tool combined with FDS allows for the analysis, acceleration, and generation of a real-life test.


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