This section highlights just a few of our case studies from many areas of expertise
From the inner ear to outer space, we’ve been involved in more areas of sound and vibration measurement than any other company in the world. This gives us a unique opportunity to share knowledge gained in one area with people who are solving problems in another field entirely. Some call this “thinking outside the box”. We call it serving our customers.
Clear focus, broader vision
This section highlights just a few of our dozens of case studies across many areas of expertise. But if you want to see even more, we invite you to visit our Knowledge centre, where you can get access to all of our case studies, white papers, and more.
Ever-shortening design and development time frames of modern aerospace programmes demand “right-first-time” engineering. Here are some stories that show how Brüel & Kjær systems help aerospace engineering companies reduce development time, ensure high-quality production, and reach their goals
DLR refines aircraft cabin noise
DLR is Germany’s national research centre for aeronautics and space. Their Experimental Methods department set out to investigate noise transmission and propagation on the Airbus A320 family of aircraft.
Testing ramp noise and durability on Lockheed Martin’s F-35
Military ground crews face high noise exposure - especially on aircraft carriers - so to protect them, Lockheed Martin characterized the acoustics of different F-35 variants, and tested their durability.
Exterior noise certification of the Airbus A330 MRTT
After Airbus modified the A330 to create the military version, they needed to update the aircraft’s noise certification so it could still use civilian airports, where noise restrictions apply.
Noise, vibration, and harshness (NVH) is the study and modification of the noise and vibration characteristics of vehicles, particularly cars and trucks. Today, an efficient NVH development process represents a key competitive advantage to vehicle manufacturers and sub-suppliers.
Based on our superior knowledge of the industry, Brüel & Kjær has solutions across the entire vehicle NVH development process. Here are just a few of the exciting projects in which we have participated.
Designing that unique Ferrari sound using NVH simulation
Our NVH simulation technology enabled Ferrari to perform virtual evaluations of alternative design decisions in an interactive, free-driving scenario
End-of-line production testing at Volkswagen, Kassel
Volkswagen is using testing, not only to ensure high-quality power train components, but also to increase production line yield and reduce cost.
Smartphone app improves vibration testing setup at Faurecia
Setting up for modal analysis is time consuming and can be a painstaking task. But with the Transducer Smart Setup app, automotive seating manufacturer, Faurecia, could drastically reduce the setup time and risk of human errors.
Brüel & Kjær supplies the aerospace and defence industries with tools that actively measure, monitor, analyse and report noise and vibration. These help improve stealth capabilities, soldier performance, and working in tough conditions.
No matter whether we are asked for off-the-shelf or dual-use applications, we provide the defence sector with products and solutions that comply with common industry standards, such as MIL-810, NATO STANAGs, and AS/EN9100.
Naturally, there are many stories we cannot share for security reasons. But here are a few we can.
Streamlining data handling in naval defence
France’s DCNS enjoys faster access to information, shorter testing periods, and intuitive interfaces – helping make better decisions and stealthier submarines
Noise mapping of military vehicles for the Norwegian military
How the Norwegian military learned to use their exercise areas to the full while maintaining good relationships with their civilian neighbours
Underwater acoustic noise measurement of vessels
The acoustic range at Heggernes in Norway measures the acoustic signature of NATO vessels – one of only a few facilities in the world capable of these studies. And Brüel & Kjær plays a key role
Space applications demand high structural performance under extreme environments for the components in a structure, such as a satellites or landers, as well as for the complete structures themselves. From the violent shocks and stresses of launch to the extreme atmospheric and climatic changes of orbit, each component must be tested to ensure survivability and proper operation throughout its life cycle. After all, there is no easy way to repair or replace systems after launch.
Our sound and vibration solutions extend to include environmental testing so engineers can carry out simultaneous experiments on operational conditions such as shock, vibration and temperature. Here are some of our recent case studies.
Satellite qualification testing at INPE
For Brazil’s space research organization, INPE, safe tests with first-time data capture are vital when vibration testing precious satellites
Ensuring satellite reliability with vibration testing
RAL Space’s work on the James Webb Space Telescope required a new vibration test system, for which they chose our LDS range of shakers
Sensors and airborne amplifiers help launch the VLS-1 rocket
Our sensors and airborne amplifiers are being used to provide critical flight data for the rocket’s on-board telemetry
Cross-platform features like smartphones, hands-free communication and telecoil devices push the envelope and make the world hungry for more innovations and conveniences. Here are just some of the ways Brüel & Kjær has helped make telephones, loudspeakers, headphones, hearing aids, televisions and many other devices safer, more reliable, and more competitive in the marketplace.
Helping Microsoft to perfect sound quality
Sound quality holds the key to Microsoft’s vision of the future, and since their engineers always want the best equipment on hand, they built a series of anechoic chambers that includes the quietest place in the world – equipped with the very best kit
Hearing loss at call centres
Noise-induced hearing loss is the second most common occupational disease. For years it was believed that being a call-centre operator was a low-risk occupation. But more research is needed to verify this.
Robot-controlled acoustic holography for hearing aid development
GN ReSound, a world leader in hearing aids, commissioned a special turnkey solution featuring robot-controlled measurements coupled with Statistically Optimized Near-field Acoustic Holography
Noise from construction work in built-up areas always presents the challenge of avoiding annoyance to the many people who can be affected. Architectural acoustics – sounds coming from or into buildings and rooms – are also a vitally important area. For over 70 years, Brüel & Kjær has worked closely with construction companies and consultants to help keep building projects on schedule and keep the neighbours happy. Here are some typical projects.
Fine-tuning acoustic isolation in buildings
In response to new technological developments, Acciona Infrastructure needed to increase competences and offerings for building acoustics and sound insulation in buildings
Considering the diversity of our client base, it’s not always easy to put our projects into convenient categories. However, we do have a couple of recent case studies that we think you’ll enjoy
Maximizing productivity with rapid noise mapping
Gorenje wanted to increase their R&D efficiency with a faster acoustic characterization system. And they turned to us
Underwater ship-noise characterization
JRC Tokki has become the first company in Japan with a large-scale underwater acoustic ranging capability thanks to a portable sound-intensity system using Brüel & Kjær equipment.
Transportation vibration testing with a V9x shaker system at TÜV SÜD
TÜV SÜD wanted to expand their range of shakers so they could conduct transportation testing of heavier objects, particularly sub-assemblies for cars and trains