popular Archive
How To Analyze Noise & Vibration In Rotating Machines
Posted on August 9, 2011 | 3 CommentsIn this article we will look at the basic steps behind a simple rotating machinery study. We won’t look in great detail at some of the techniques involved – we deal with...
Which Should I Use? Real & imaginary? Or magnitude & phase?
Posted on May 4, 2011 | 7 CommentsIn one of our recent articles a question was asked regarding the practical use of real & imaginary type plots compared with modulus & phase type plots. In general, noise...
Converting Acceleration, Velocity & Displacement
Posted on December 16, 2010 | 13 CommentsFrom time to time I meet engineers who are interested in the conversions between acceleration, velocity and displacement. Often, they have measured acceleration, but are interested in displacement or vice...
A Simple Frequency Response Function
Posted on October 19, 2009 | 24 CommentsThe following article will attempt to explain the basic theory of the frequency response function. This basic theory will then be used to calculate the frequency response function between two...
Strain Gauges Explained
Posted on September 8, 2008 | 24 CommentsA strain gauge is an electrical sensor which is used to accurately measure strain in a test piece. Strain gauges are usually based on a metallic foil pattern. The gauge...
Fatigue & Durability Testing
Posted on May 17, 2006 | 10 CommentsThe following application note describes the test and measurement process for the fatigue testing and development cycle of an automotive suspension component, specifically a tie rod. The component had been...
Understanding The Cross Correlation Function
Posted on June 6, 2001 | 3 CommentsTo illustrate the use of the cross correlation function, a source location example is shown below. For this it is assumed that there is a noise source at some unknown...
