Bruel & Kjaer UK Ltd. - PRODUCT NEWS

New Random Vibration Control Software Release - with Kurtosis Control and Fatigue Monitoring

Bringing together the expertise of two world leading companies, LDS and Brüel & Kjær announce the release of the Random Vibration Control Software, Version 8, for the popular LDS LASERUSB™ Vibration Controller. This new Kurtosis Parameter Control option greatly improves laboratory simulation of real-life vibration when testing components, enabling manufacturers to reduce costs and cut test times.

Traditional Gaussian random test signals do not accurately represent the “peaky” vibration signals seen in the in-service use of many products. For example, audio components in an automobile travelling on a bumpy road will experience high acceleration levels more frequently than would be simulated in a typical lab test using Gaussian random. The consequence of not using the right type of test signal under testing of the product leads to higher field failure rates and added warranty costs.

The new Kurtosis Parameter Control option gives the test lab the capability to use a non-Gaussian signal with the kurtosis characteristics set to match the “peakedness” of real-world data resulting in a better lab qualification of products.

Non-Gaussian excitation is also important as a means to accelerate fatigue tests. The ability to tailor kurtosis provides for accelerated fatigue tests and saves test time. Tests with high kurtosis spend more time at high acceleration levels. For a durability test lasting many hours, a high kurtosis test delivers significantly more fatigue damage than a Gaussian random test.

Kurtosis Control together with the Fatigue Monitor capability provides a complete solution for fatigue testing. The Fatigue Monitor detects the onset of product fatigue, with rapid test shutdown, to protect expensive and/or sensitive products from damage or catastrophic failure. This unique monitoring function can also be used to detect looseness in the fixture or mounting or even degradation of the shaker itself.

About Bruel & Kjaer
Brüel & Kjær is a world-leading manufacturer and supplier of sound and vibration solutions for use in a wide range of applications including environmental noise measurements, building acoustics, vibration measurements and quality control for use in the automotive, aerospace and consumer industries, as well as by local authorities. Today Brüel & Kjær has 900 employees and sales offices in 55 countries. Brüel & Kjær is a subsidiary of UK-based Spectris plc. ( Spectris has annual sales of approximately £656m and employs around 6000 people worldwide in its 15 business units.
For more information, please contact :-

Bruel & Kjaer UK Ltd.
Bedford House, Rutherford, Close, Stevenage, Herts. SG1 2ND. UK
Tel: +44(0) 1438 739000
Fax: +44(0) 1438 739099

September 2009

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