Analysis of the Acoustic and Vibration Measurement in the Disintegration Process

Abstract

In the last thirty years there have been many developments in the use of acoustical and vibration measurement and their analysis for monitoring the condition of rotating machinery. These have been in three areas of interest the: detection of machinery pieces faults, the diagnosis and the prognosis. Of these areas, the diagnosis and prognosis still require an expert to determine what analyses to perform and to interpret the results. Currently much effort is being put into the automated fault diagnosis and prognosis. Major benefits come from the ability to predict with a reasonable accuracy how long a machine can safely operate (often a matter of several months from incipient faults are first detected). This article briefly summarizes selected signal processing methods, which are possible to be suggested for the vibroacoustical measurements evalution. These techniques are presented with a reference to their use in the rock disintegration process. Simultaneously, several cases are discussed where a great care must be taken in setting up input parameters or very misleading data would be produced.

Keywords

• rotating machines
• drilling
• acoustical and mechanical waves
• frequency domain
• spectrum