Basics of Vibration Analysis
Acquiring vibration data is only part of the challenge of vibration measurement; the other part is the analysis of the data acquired. It’s important to understand the types of waveforms associated with vibration analysis, the important differences between them and when it is appropriate to use each type of vibration analysis tool. Here’s a quick overview of some of the basics. Time Domain Vibration Analysis Vibration analysis starts with a time-varying, real-world signal from a transducer or sensor. Analyzing vibration data in the time domain (amplitude plotted against time) is limited to a few parameters in quantifying the strength of a vibration profile: amplitude, peak-to-peak value, and RMS, which are identified in this simple sine wave. The peak or amplitude is valuable for shock events, but it doesn’t take into account the time duration and thus the energy in the event. The same is true for peak-to-peak value with the added benefit of providing the maximum e