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It is necessary because road vibration data typically contains occasional extreme peaks that are missing in the Gaussian random testing by the PSD/FFT approach.
A second and very common approach is to specify a random vibration spectrum to which a product is subjected. Figure 1 shows four power spectral density (psd) curves that define part of NASA flight ...
ABSTRACT In this paper, the development of random vibration testing schedules for durability design verification of engine mounted products is presented, based on the equivalent fatigue damage concept ...
Random-vibration analyses define external loading in terms of PSD inputs (g2) as a function of frequency. The units for the input, g2/Hz, cover the bandwidth of interest.
A method is presented to process random vibration data from a complete road durability test environment as stationary segments and then develop test profiles based on fatigue content of their power ...
Last month’s column discussed the basics of simulating resonant or natural vibration frequencies as an introduction to performing advanced vibration analysis. Here, we delve deeper into random ...