Are My Hammer Impact Results Valid? (2) Reciprocity
As mentioned in our previous article, when performing experimental modal testing of a structure or component using impact (or ping) testing, it is important to consider and verify the validity…
Are My Hammer Impact Results Valid? (1) Linearity
When performing experimental modal testing of a structure or component using impact (or ping) testing, it is important to consider and verify the validity of any results. A modal analysis…
DJB Instruments Ltd joins Prosig as part of Condition Monitoring Group Ltd (CMG)
Condition Monitoring Group Ltd (CMG) are pleased to announce the acquisition of DJB Instruments Ltd based in Mildenhall near Cambridge in the UK. DJB will join Prosig, Helitune, Beran Instruments,…
Sentinel MF Sirius Early Run 180g Blank NEW Millennium Prime Dis
A vital question to be asked before performing hammer testing is - how do I support the testing object? What fixing mechanism to use? Or technically, what are the desired…
Rotational Analysis with no Tachometer Data
The identification of cyclic events in rotational analysis is often key to identifying problems. It is good practice to use a suitable sensor for capturing rotational speed. However, this is…
Analysis of Dynamic Engine Vibration – Angular Vibration in High Performance Engines
The analysis of dynamic engine vibration and the accurate measurement of angular vibration is a non-trivial task, as a more in-depth analysis of boundary conditions reveals. Tools for engine vibration…
Using Source Contribution Analysis to analyze complex structural dynamics issues
Using Source Contribution Analysis (SCA) and Structural Animation (STA) in the DATS software for the analysis of complex structural dynamics This post uses Source Contribution Analysis (SCA) techniques and a…
5 Cool Acoustics Links
We have scoured LinkedIn, Twitter and the rest of the Internet to find these cool acoustics links. And since two of them are themselves lists of 10 you're actually getting…
Lesotho #335-37 (1981 Royal Wedding gutter pairs imperforate)
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SEMIA SAS joins Prosig’s parent company Condition Monitoring Group
Semia has been a long standing partner with Helitune, one of the CMG companies, and has distributed Helitune products for the last 20 years to the French market. Semia’s specialises…
Analysis of Airflow Instabilities in HVAC units
HVAC (Heat Ventilation Air Conditioning) units are devices used in various applications, such as cars, buildings, aircraft etc. They facilitate the transport and conditioning (heating, cooling, changing of humidity) of…
Prosig supply high channel count data acquisition system to new RAL Space NSTF facility
Download as PDF The National Satellite Test Facility (NSTF) is a new facility in the United Kingdom for the environmental testing of complete satellites and large sub-assemblies. To be operated…
Prosig Student Project Prize for University of Portsmouth – 2018
Every year Prosig provide a prize for the best student project at both the University of Portsmouth and the University of Southampton. We are pleased to announce that this year's Prosig Engineering…
Noise & Vibration Analysis: 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…
Sound, Vibration & Acoustics Digest #11
Here's our latest collection of noise, vibration & acoustics stories from all corners of the internet. We hope you enjoy them. Leave us a comment. Architectural Acoustics via 99% Invisible…
How Do I Upsample and Downsample My Data?
This post covers how to upsample and downsample data and the possible pitfalls of this process. Before we cover the technical details let us first explain what we mean by upsample…
What Are Vibration, Torsional Vibration & Shaft Twist?
When analyzing rotating shafts some terms are often confused. This post will attempt to explain the differences. So, what are vibration, torsional vibration and twist? What is Vibration? We measure at…
Pick of Twitter #1 – Acoustics – October 2016
We've been carefully tracking acoustics related tweets on Twitter and present here a few of the highlights. We do this sort of thing so that you don't have to. Don't…
Real World Noise & Vibration Measurement – An Interview
Richard O'Sullivan is a respected engineer who has worked throughout the world on noise & vibration measurement solutions in automotive, aerospace and beyond. Hear about some of the problems he…
Prosig Will Be At Automotive Testing Show in Novi
You will be able to meet Prosig and some of our top bloggers at Testing Expo USA 2016 in Novi on 25th, 26th & 27th October 2016. Come along and…
The Effect of the Nyquist Theory on Rotational Order Analysis
Nyquist theory is generally understood, but this understanding usually relates to time sampling and the conversion to the frequency domain. Rotational order analysis and the effect of the Nyquist frequency…
How to avoid a ground loop – It’s not only a problem with accelerometers
When using modern, high technology measurement devices one can often be tripped up by the simplest things. The most common is the ground loop. Time and again this issue rears…
Sound, Vibration & Acoustics Digest #10
Here's our latest collection of noise, vibration & acoustics stories from all corners of the internet. We hope you enjoy them. Leave us a comment. Energy via The Register Hate…
Seismic Qualification Testing (Part 1)
Seismic Qualification Testing for US Nuclear Power Generating Stations Part 1 (Random Vibration Testing) The nuclear power industry in North America (USA, Canada & Mexico) requires seismic qualification testing for…
Dance Costume Wish Come True 225 Large Child Purple Jazz Hip Hop
Exhaust Vibration Measurement - Customer Requirement One of Prosig's customers needed to perform exhaust vibration measurement on some of their vehicles. They contracted Prosig to take the measurements and provide reports of the…
What Is Amplitude Quantization Error?
Amplitude Quantization Error - Summary This article explains what amplitude quantization error is and what can be done to avoid it. Typically quantization error is caused during acquisition of data.…
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