Issue 3/2005

Welcome to our latest Newsletter about the Vibration & Environmental test world in addition to the latest information from m+p international.
The m+p international Newsletter is circulated exclusively to test engineers and managers involved in vibration test, data acquisition and signal analysis and hopes to bring you some useful technical snippets gleaned from around the world and from around the test and measurement industry. We always look forward to your inputs, send us your views to newsletter@mpihome.com.

If you have problems with the layout or if you can't see the correct whole newsletter, please use our online offer with the link: http://www.mpihome.com/english/nl3_2005_engl.htm.

Unique to our SmartOffice based vehicle Pass-by-Noise measurement system are the GPS components for both position and velocity information. This is what allows us to reduce our system down to two PC based measurement units without the need for radar, light beams, track position sensors and of course all the set-up time involved with all those components.

However, our own personal SatNav experience and technical intuition regarding how GPS works often prompts the question "GPS can't be that accurate ... can it?". Well, it's not obvious but m+p engineers have developed a system that really does provide accuracy and repeatability that is measured in a few millimetres and hence have created a world-beating solution for this application.

The vehicle noise, engine RPM and other measurements are performed by two SmartOffice based portable analysers. One is based at a fixed point on the vehicle test track and the other inside the vehicle being tested. The driver can operate both systems automatically from his in-vehicle PC to control his measurement runs and do on-line analysis. Final reports are also created from the powerful SmartOffice report generator.

We have new literature explaining more details, email us at sales.na@mpihome.com for your copy or click here.

The automotive industry asks its suppliers more and more to perform tests on their own. To meet this requirement, Valeo Thermique Moteur near Paris – a branch of the Valeo group which ranks among the world’s top automotive suppliers and supplies all major vehicle manufacturers - further extended their test facilities.

Valeo Thermique Moteur recently awarded m+p international of Montesson, France, a contract for 4 VibPilot vibration control systems for testing engine cooling modules on a Schenck long-stroke shaker. The used VibPilot systems enable Sine, Random and Shock testing as well as RoadLoad simulation. In RoadLoad mode, VibPilot replicates the behavior previously measured on the road on the shaker, thus transfering the real conditions a vehicle undergoes during its life to the test laboratory. The vibration control software was optimized to do low-frequency tests with specific profiles.

m+p international is pleased to help Valeo to improve the quality and reliability of its products.

m+p international developed a unique vibration test stand that enables the exact replication of transient signals featuring different displacement-time histories. Normally, transient signals are controlled in the acceleration-time domain by means of accelerometers. The m+p international application is so special because vibration control is done in the displacement-time domain on a contactless laser displacement transducer (triangulation principle). To do so, the control of our VXI-based
VibRunner vibration control and analysis system was adapted accordingly. The VibRunner software modules “Classical shock” and “External pulse” are used to generate pulses of any form.

If a test is to start at full test level, stored drive signals can be directly used. The VXI system (VXI FireWire module) sends a TTL trigger signal to a high-speed camera when a transient signal is executed at time t = 0.

Mobile application is another big advantage. Operation of the test stand via notebook and a “small” shaker, that nevertheless meets all kinematic requirements, enble the user to perform the tests quickly and easily wherever he wants to.

This vibration test stand is only available at m+p international. For more information please contact: al.prosuk@mpihome.com or phone: (+1) 973 239 3005.

• Automotive Testing Expo 2005
  October 26-28, 2005, Detroit, Michigan
  Novi Expo Center
  Stand # 13006
  
  
• Aerospace Testing Expo
  November 8-10, 2005, Long Beach, California
  Long Beach Convention Centre

We would be pleased to see you there.

The following m+p international sites may be of interest to you or a colleague - don't keep them secret, pass them around...

VibSlideRule Download the multi-function vibration calculator from m+p international.

What is vibration control? A brief description of the essence of vibration control.

m+p international articles Learn more about some of our vibration and acoustic control applications.

"It is a common experience that a problem difficult at night is resolved in the morning after the committee of
sleep has worked on it." – John Steinbeck

Well, that brings to a close this edition of the m+p international Newsletter. If there are items of info you would like to see here or if you have useful tips for the rest of the environmental test world, then please send us your pointers and we'll include them in the next edition.

Please forward this Newsletter to your colleagues if you have found it of interest, spread the word...

With regards,
m+p international Marketing

m+p international listens to customers...

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