Publisher's Synopsis
Vibration analysis is not a new technology. The Piezo effect and charge output of certain materials was discovered in 1880 by the Curies. The first accelerometer was built in 1923. Over the last 100 years, this technology has been refined for today's industrial market to provide fast efficient measurements of rotating machinery vibration. The advent of the microprocessor has enormously advanced the process of vibration data acquisition and analysis in recent years. Measurement tasks that took hours only two decades ago can now be completed in minutes and better decisions made because of better data presentation. However, the basic processes of measurement and analysis have remained essentially unchanged, just like the machines from which the vibration is measured. The results of the measurement and data analysis need to be compared with known standards or guidelines and decisions made as to whether the machine is acceptable for service or maintenance should be planned. Vibration analysis is used for condition monitoring of machines in operation. All the machines while operating vibrate more or less, and with most of them the vibrations are unwanted and the effort is to minimize them. Only with some types of machines, vibrations are directly a working principle of the machine and are caused deliberately (e.g. vibrating screeners). Implementing vibration analysis on the machines will improve the reliability of the machines and lead to better machine efficiency and reduced down time eliminating mechanical or electrical failures. Vibration analysis programs are used throughout industry worldwide to identify faults in machinery, plan machinery repairs, and keep machinery functioning for as long as possible without failure. Vibration Spectrum Analysis: A Practical Approach reviews the basic principles of vibration measurement and analysis in order to lay the foundation for capable fault diagnosis to be considered later. The basics and underlying physics of vibration signals are first examined. The acquisition and processing of signals is then reviewed followed by a discussion of machinery fault diagnosis using vibration analysis. Hereafter the important issue of rectifying faults that have been identified using vibration analysis is covered. The latest approaches and equipment used together with the latest techniques in vibration analysis emerging from current research are also highlighted. Vibration analysts, predictive maintenance specialists, and field mechanics will find it to be a key reference.