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VIBRATION ANALYSIS

 

Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point. The word comes from Latin vibration ("shaking, brandishing") The oscillations may be periodic, such as the motion of a pendulum or random, such as the movement of a tire on a gravel road.

Vibration can be desirable for example, the motion of a tuning fork, the reed in a woodwind instrument or harmonica, or mobile phones or the cone of a loudspeaker.

In many cases, however, vibration is undesirable wasting energy and creating unwanted sound. For example, the vibrational motions of engines, electric motors, or any mechanical device in operation are typically unwanted. Such vibrations can be caused by imbalances in the rotating parts, uneven friction, the meshing of gear teeth, etc. Careful designs usually minimize unwanted vibrations.

The study of sound and vibration are closely related. Sound, or "pressure waves", are generated by vibrating structures (e.g. vocal cords); these pressure waves can also induce the vibration of structures (e.g. ear drum). Hence, when trying to reduce noise it is often a problem in trying to reduce vibration.

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PCN AND ASNT TRAINING IN CHENNAI is built on strong material Testing & Non - Destructive Testing expertise, founded in 2004 by group of professionals to serve the industry. Metal Testing Lab was awarded

ISO 17025 -2005 NABL Accredited Certification laboratory (Dept. of Science and Technology, Government of India) ISO 9001 - 2008 Quality Management System Certification services among few of the Metallurgical lab & NDT Services in India.

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