08. 21. 12. 08:34 am

A timelapse movie of James Wren (Prosig UK) building our new test/training/demonstrator model. A Haynes model of a petrol engine.

Read more about how and why we are building the model on the Noise & Vibration Measurement Blog - http://blog.prosig.com/2012/07/18/building-a-new-test-model/

04. 19. 12. 07:16 am

Waterfall Analysis: Frequency Resolution and Smearing

When measuring noise and vibration in rotating machines, especially complex devices like automobile engines, it is very important to fully understand what is being measured and what analyses need to be performed on the resulting data. Even the most sophisticated measurement systems will not produce meaningful results if used incorrectly. The testing of noise & vibration during development can be important factors in a final design. Poor measurement or analysis can have huge consequences on the success of a new vehicle.

Find out more. Read the full article.

01. 25. 12. 02:01 pm ♥ 19

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.

Read the whole article on the Noise & Vibration Blog

01. 06. 12. 07:48 am ♥ 48

What is the difference between microphone types?

Do you know what the difference is between different types of measurement microphone? Did you even know there were different types? Find out more…

Read the full article here

12. 14. 11. 11:56 am ♥ 25

Negative Frequencies – What Are They?

Normally when we are analysing a signal it is a purely real signal, that is it has no imaginary part. A classic example is of course a sine wave. When we analyse a signal with a Fourier transform, typically using an FFT algorithm, most people are aware that we will obtain a result from 0 Hz(dc) to (Sample rate/2)Hz. It is also generally understood that the resultant output of the FFT is a complex signal shown either in modulus (amplitude) and phase form, or in real and imaginary form. The real part is often referred to as the in phase component, and the imaginary as the quadrature component.

Read more of this article

12. 13. 11. 12:25 pm ♥ 30

Shouting in the Datacenter

How the tiniest noise or vibration can have big consequences. Next time your Google search is a bit slow it’s because someone shouted in the data center.

12. 05. 11. 10:47 am ♥ 36

What's All The Noise About?

A collection of noise related links and resources

11. 17. 11. 04:18 pm ♥ 11

Scotch Distillery to Raise Concentration on Biogas-Fueled Cogeneration

We’re hoping that they might need some vibration monitoring. We have a bus load of volunteers :)

06. 12. 12. 04:32 pm

Noise & Vibration Measurement : Back To Basics

Sometimes it doesn’t hurt to revisit some of the basic building blocks that form the foundation of what we do. And so we have gathered together a few of our most popular past articles that deal with the fundamental aspects of measuring and analysing noise and vibration data.

03. 20. 12. 10:35 am

Understanding the Importance of Transducer Orientation

Transducer orientationWhen monitoring vibration on large gas or steam turbines and generators with fluid-film bearings, the relative movement of the shaft within the bearing is typically measured by a pair of shaft proximity (eddy current) transducers. Data from these transducers is used to a variety of plots on a condition monitoring system including orbit displays and shaft centreline plots.

Read the whole article on the Noise & Vibration Measurement Blog

01. 12. 12. 03:00 pm ♥ 38

How To Calculate A Resultant Vector

We can distinguish between quantities which have magnitude only and those which have magnitude and are also associated with a direction in space. The former are called scalars, for example, mass and temperature. The latter are called vectors, for example, acceleration, velocity and displacement.

Read the full article on the Noise & Vibration Blog

01. 06. 12. 07:42 am ♥ 58

Pendulum Waves. Beautiful…

Fifteen uncoupled simple pendulums of monotonically increasing lengths dance together to produce visual traveling waves, standing waves, beating, and (seemingly) random motion.

12. 13. 11. 07:59 pm

Negative Frequencies – What Are They?

12. 09. 11. 04:38 pm

A New Partner In Condition Monitoring – VibrationDiagnostics Ltd

12. 05. 11. 10:45 am ♥ 37

Stradivarius violin recreated from CAT scan, 'sounds amazingly similar'

"We’ve seen all kinds of crazy things being printed — from bones to blood vessels — and now you can add antique violins to that list. Music loving Radiologist Steven Sirr popped his into a CAT scanner to see what it was made of, then showed the results to a violin-making friend. Curiosity soon led them to scan everything from guitars to mandolins, so when the chance to take a peek inside a 307-year-old Stradivarius came up, how could they resist? 1000 scans later, the files were converted to 3D CAD format and another violin maker enlisted. Crucially, the images show the density of the wood all the way through, allowing a CNC machine to carve out copies of each section, with different woods used to match the differing densities. With all the parts in place and a lick of varnish, the replicas were complete. Sirr claims the copies sound “amazingly similar” to the original, but we are unsure if he plans to make it open-source" - via Engadget