Measuring Torsional Vibration 101
Do you need to measure torsional vibration? Interested in shaft twist? Worried about rotational jitter? Don’t worry, we’ve got it covered. Here we have gathered together our most popular articles on the subject of torsional vibration to give you a complete 101 on the subject.
All of the articles below make extensive use of Prosig’s DATS Rotating Machinery software. You can find out more about the software at http://www.prosig.com/dats/optroma.html
What is Synchronous (Angular) Sampling?
The term synchronous data is usually applied to vibration or acoustic data that is captured from an item of rotating equipment at regularly spaced angle intervals as distinct from regularly…
Measurement And Analysis Of Torsional Vibration
Torsional vibration is of key importance in the area of vehicle development and refinement. The main contributory source is the engine where periodically occurring combustion cycles cause variation in the…
Torsional Vibration, Tacho Pulses And Aliasing
With shafts, gears and the like, the general method of determining the rotational speed is to use some form of tachometer or shaft encoder. These give out a pulse at…
Measuring Torsional Twist & Vibration Along a Shaft or Through a Geartrain
The measurement of the twist angle between two points along a shaft or through a gear train may be derived from a pair of tacho signals, one at each end…
Measuring Torsional Crank Shaft Jitter
Using Prosig’s P8000 series data acquisition system with DATS signal analysis software, torsional analysis (crank jitter) was performed on an automotive engine attached to an engine dynamometer. The significance of…
Analyzing Shaft Twist And Repairing Damaged Tachos
A shaft has been instrumented with two shaft encoders, one at each end. Each shaft encoder gives out a once/rev pulse and a 720 pulses/rev signal. Each signal was digitised…
We hope you found these articles useful. Please comment here on the individual articles and let us know if you liked them or if there’s any other torsional vibration topics you’d like to see covered.
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About Author
Chris Mason | Website | Twitter
Chris graduated from Portsmouth Polytechnic in 1983. His interest in software began with a Sinclair ZX80 and hours spent typing in programs from magazines. Chris now leads the development of Prosig’s DATS software package, writes for the Noise and Vibration Measurement Blog and works on social media projects. He is a technical director of Prosig Ltd.