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Brüel & Kjær Impedance Meter System for aircraft testing


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2014-08-19 14:29:11 - To help engineers meet increasingly strict aerospace environmental noise regulations, Brüel & Kjær created a lightweight, robust Portable Impedance Meter System - Type 9737.

Regulations put pressure on aerospace engineers to improve liner attenuation - and this drives the need for improved acoustic impedances in jet aircraft acoustic liners. Acoustic Liners are vital to ensure aircraft are quiet and must satisfy many other requirements too, such as withstanding extreme weather and fitting restricted spaces.

Fully bonded panels within aircraft must be assessed for their true, effective acoustic behaviour in their final condition. Brüel & Kjær’s Impedance Meter System provides aerospace engineers with a user-friendly system, suitable for carrying out research and production quality control impedance measurements, up to 150 dB SPL on engine nacelle liners.

The system allows key acoustic parameters, such as impedance spectra vs. OASPL and acoustic resistance versus acoustic velocity, to be extracted

in-situ. An automated pass/fail routine allows non-acoustic specialists to quickly carry out production quality control measurements.

The system is based on the two-microphone, transfer function test method, which means measurements take only a fraction of the time required by traditional, standing-wave ratio systems.
The Portable Impedance Meter system lends itself well to the measurement of acoustic properties of aircraft interiors and trim materials.

More information about Impedance Meter System - Type 9737 is available on Brüel & Kjær’s website: www.bksv.com/doc/bn

Ends

About Brüel & Kjær

Brüel & Kjær is a world-leading manufacturer and supplier of sound and vibration measurement systems.

We help customers measure and manage the quality of sound and vibration in their products and in the environment. Focus areas include aerospace, space, defence, automotive, ground transportation, airport environment, urban environment, telecom and audio.

Our portfolio of sound and vibration equipment includes sound level meters, microphones, accelerometers, conditioning amplifiers, calibrators, noise and vibration analysers and PULSE software.
We also design and manufacture the LDS range of vibration test systems, as well as complete airport and environmental monitoring systems: WebTrak, ANOMS, NoiseOffice and Noise Sentinel.
To see our full range of solutions, systems and products, please visit: www.bksv.com

We run a variety of training courses, from basic introductions on noise and its effects, to more specialised classes teaching customers how to get the most out of their equipment.

Free, online training courses - conducted by our expert engineers - run throughout the year. For all course registration details, please visit: www.bksv.com/courses

Brüel & Kjær is a subsidiary of UK-based Spectris plc (www.spectris.com) which has annual sales of £1.1bn and employs around 7,500 people worldwide across its four business segments.

For additional information please contact:
Heather Wilkins
Marketing Coordinator
Bruel & Kjaer
Telephone: 01223 389 800
Web: www.bksv.com
Email: heather.wilkins@bksv.com


Contact Information:
Bruel & Kjaer

Jarman Way
Royston
Herts
SG8 5BQ

Contact Person:
Heather Wilkins
Marketing Coordinator
Phone: 01223 389 800
email: email

Web: www.bksv.com



Author:
Heather Wilkins
e-mail
Web: www.bksv.co.uk
Phone: 01763 255 780

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