Fault analysis on Vibration

          if you doubt more analysis on the fault, I used to understand the failure analysis, also think is damage to the equipment, have a look the fault is happened in where, repair. Afterwards just know is engaged in vibration, sometimes take the words too literally or not.
Read a lot, in fact, failure analysis of this piece, we the most confusing or signal problems, how to combine the signals and problems. I suggest reading the book, to understand the basic concept, as long as a weekend, can do basic understanding.
In fact, the analysis is the core point of vibration by strengthening and strengthening the analysis way, to judge the fault type.
          for example, the correlation between the mathematical concept, the mysterious, mechanics (including sports), is the vector dot product, like frequency and natural frequency of vibration excitation, promotion will not stop, the same reason.
          such as time domain analysis, consistent time intervals, the more similar the correlation value, is more strong, also shows that change more slowly. The profound truth immediately become obviously common sense. This is a new signal analysis and processing.
          again the following about characteristics, various signals do not memorize, to understand. For example, the eccentric rotary body, roughly the shape is not Fang Bo, but a sine wave. If the tooth surface damage, as if walking in deep pit, that is, pulse, no slow change type, do not want to know.
Therefore, the vibration of this one, may I not professional, but I think that we should understand some basic concepts, the concept of intuitionistic, understand only after good work.