Generate an accelerated sine-on-random test representative of operational environments that have dominant sine tones with background random vibration. STAG generates accelerated sine profiles from a recording and employs the FDS to analyze the remaining random content.
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Sine-on-random test running in the VibrationVIEW control software.
The STAG software uses order analysis and extraction and sine tone profile creation and acceleration to isolate, extract, and create an accelerated sine profile or series of sine profiles from a recording. It employs the Fatigue Damage Spectrum (FDS) software to analyze the remaining random vibration.
In combination with FDS, STAG allow engineers to analyze, generate, and accelerate a realistic Sine-on-Random vibration test.
STAG uses order analysis and the FDS to ensure all of a test profile’s vibration components are an accurate representation of the operational environment.
Horizontal and vertical cross-sections of a tach-based spectrogram.
ObserVIEW extracts orders of interest from recordings. It separates the rotational content from the background random and then employs a tracking filter to remove unrelated data.
STAG generates one or multiple accelerated sine tone profiles using orders extracted from the original recording and user-defined parameters.
STAG exports the data file to VibrationVIEW without the order content. The FDS software generates an accelerated random profile, and STAG combines it with the sine profile(s) generated in ObserVIEW.
Vibration from a rotational component, such as an engine or rotor component, is rendered as sine tones on a shaker table. If this vibration exceeds the acceleration of the random background, engineers must include it in the vibration test profile.
A standard random test cannot replicate operational environments with dominant sinusoidal tones. The more accurate option is a sine-on-random (SoR) test, which includes the sine tones and produces more consistent results.
Activate the Order Analysis and FDS licenses and access the tools to analyze data with dominant sinusoidal components from rotational sources. Quantify noise and vibration in rotating machinery with order analysis, Sine Tracking Analysis and Generation (STAG), and more. Develop tests and analyze waveforms with software tailored for rotational equipment.
FDS test profile generated in VibrationVIEW from random background vibration.
Save time and reduce transposition errors by quickly importing the analyzed data from STAG to VibrationVIEW. Orders are extracted from the recording before the background time waveform is processed with FDS. This ensures that FDS accelerates random data and not sinusoidal data.
“The processing time [for standard SoR test development] took up to 30+ hours to create a test profile. This method was computationally expensive and caused a long run time. Many times, there were input errors to the band tracking filters and the wrong order was extracted, or the same order was extracted twice requiring another processing run.
With the STAG tool, our team was able to develop sine tone profiles for the sinusoidal components and then export the random content to VibrationVIEW to employ FDS. The other commercially available package was expensive and time-consuming while STAG processed the data in a fraction of the time and with greater accuracy.“
The time-history data must include an RPM reference trace and sensor data to extract orders of interest.
Environments to Analyze
