VIIBRATIION DIIAGNOSTIICS

TAFATNEB · 08-13-2014, 07:42 AM

Dear students, the purpose of this textbook is to give you an insight into the area of measuring vibrations and the use of measuring vibrations in vibration diagnostics. Vibration diagnostics is one of the non-destructive methods 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). Though, this group of machines is not of interest to vibration diagnostics. Diagnostic work can be thought of by analogy with activities of a practising physician who during preventive inspection detects and evaluates one's medical condition. Basically, three situations can occur: You will learn that 1) you are healthy and you can live as before, 2) you have high blood pressure and you should start taking the medication for its reduction and/or change your lifestyle, or 3) your condition requires hospitalization and a more detailed examination and/or a surgery. Machines are at exactly the same situation. Based on a diagnostician’s assessment they can either continue in operation, or a tiny intervention is necessary, or they need to be shut down and repaired thoroughly. Purpose of all this is, in case of both humans and machines, to save the cost of repair or to prevent a disaster and its associated costs. As the name vibration diagnostics suggests, machine condition is diagnosed on the base of an analysis of vibration. Successful application of vibration diagnosis requires in practice staff with considerable degree of knowledge and experience. Routine work in data collection may be carried out by trained personnel without academic qualifications, but data processing and assessment of the state of a machine is a task for an engineer who has knowledge in various areas (design of machines, dynamics, mathematics, signal processing, etc.) and who is able to use this knowledge in context. A graduate in Applied Mechanics specialization is an ideal candidate for becoming a skilled vibration diagnostician after several years of practice. This text is almost your first encounter with the experimental mechanics. We believe that we will convince you that it is a beautiful and promising area which should become an integral part of your engineering practice and mastering of which will contribute to your becoming a full member of the team of experts addressing complex technical problems

Code:
***************************************

Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html

***************************************

This post has been made by CivilEA Post-Generator v2.2.0