Fundamentals of Vibration

What do we know about vibration? We encounter vibration in our daily lives in many places, we feel vibration when we are waiting in a traffic jam on top of a flyover, we feel it when we ride a train. It can sometimes be experienced as an earthquake and at other times the panes of our windows vibrate when a noisy vehicle passes by.

Read More....

Vibration Monitoring And Control

Vibration occurs in every rotating or reciprocating machinery as a consequence of forces that are generated in such machines.A maintenance manager's work is made easier by the installation of a system of Periodic Vibration Assessment. This is nothing but a systematic collection of Vibration Spectra at periodic intervals on specified points on critical machinery.

Read More....

Simple Harmonic Motion

Simple Harmonic Motion (SHM) is a type of oscillating movement that is at the very core of understanding the concept of vibration.A brief introduction to this concept is provided in this article.

Read More....

Free vs Forced Vibration:

In the case of machine vibration, we always try and design a machine to run in such a condition that its natural frequencies are not excited. The concept of free and forced vibrations is outlined in this article.

Read More....

Displacement, Velocity, and Acceleration:

What are the units of vibration? What do Displacement, Velocity, and Acceleration mean? What is the significance of using one and not the other?
These are some of the issues that are outlined in this article.

Read More....

Concept of Magnitude, Frequency, and Phase:

A brief introduction to the concept of Magnitude, Frequency, and Phase which are some of the key terms in measuring a simple harmonic motion is given in this article.

Read More....

Fouriers Theorem and Frequency Domain:

Any wave can be expressed as a sum of several sine waves of different frequencies and amplitudes. Conversely, any wave can be broken down into a series of sine waves. Once we have all the different frequency components of a vibration signal, we can plot a curve between amplitude and frequency. We would have then gone into what is called the frequency domain which is also referred to as the frequency spectrum.

Read More....

How much vibration is allowed?

When you are starting on a program of condition monitoring the answer to this question is unknown. There are many different kinds of machines in use and a single standard cannot mandate the level of vibration for all types of machines.

Read More....