The power spectral density (PSD) is foundational to random vibration testing. Engineers use the PSD calculation for test development and data analysis, and the PSD graph displays resonances and harmonics concealed in a time-history waveform graph. In practice, PSD generation is often the first step in examining and analyzing a random waveform.
This webinar offers an introduction to the PSD calculation. It provides an overview of the terminology, including stationary random vibration, gRMS, and fast Fourier transform, and the process of generating a PSD.
Each word of the acronym—power, spectral, and density—represents an essential component of PSD analysis, and this webinar addresses these fundamentals. It also discusses test settings that affect PSD analysis and the underlying statistics of random vibration.
About the presenter: Jared Van Baren is the Marketing Manager at Vibration Research with ten years of experience in its sales and marketing teams.
Webinar Topics
- Definitions related to the PSD
- Applications of random testing
- Dissection of power, spectral, and density of PSD
- Overview of how to generate a PSD
- Properties of the PSD calculation
- Statistical properties of random vibration
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