PV = pseudo velocity
The following method is intended for components which are to be tested to power spectral density (PSD) specifications on shaker tables. The method can be applied to sine-on-random specifications as well.
The purpose of this document is to recommend velocity severity categories for PSD base inputs in terms of Stress-Velocity Relationship (SVR) fatigue damage.
The categories can then be used to plan the design and analysis efforts required to ensure that a component will pass its PSD test, or at least mitigate risk of failure with associated cost and schedule delays.
The method draws from Gaberson, Steinberg, Morse and Dirlik.
Slides: psd_severity_revA.pptx
Matlab Scripts: Vibrationdata Signal Analysis Package
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See also:
Shock and Vibration Severity Thresholds for Structures and Equipment
Shock Severity Limits for Electronic Components
– Tom Irvine
Vibrationdata 