A world made to measure
Irish playwright George Bernard Shaw once said, “The only man who behaves sensibly is my tailor; he takes my measurements anew every time he sees me, while all the rest go on with their old measurements and expect me to fit them,” a statement that…
Exterior noise of a high-speed train
Transport by high-speed train is becoming more widespread particularly in these climate-conscious times. How can the external noise from these moving sources be efficiently measured and assessed? The high-speed train network is growing fast worldwide, particularly in China. Many of the lines pass close to…
A new approach to end-of-line vehicle auditing
To enable the identification of production issues, a portable analysis system has been developed to complement the subjective impression of the audit driver by automatically producing objective data that can be used to diagnose and solve problems. In a production plant environment, the traditional method…
Analysis of vehicle voice recognition performance
Analysis of vehicle voice recognition performance in response to background noise and gender-based frequency. To address customer complaints on voice recognition (VR), Hyundai and Brüel & Kjær Global Engineering Services analysed the performance of the in-vehicle VR system and the sensitivity to background noise and…
Active vibration-based SHM system: On an operating Vestas V27 wind turbine
Can you detect a 15 cm crack in a wind turbine blade without stopping the wind turbine? A three-year-long research project, partly financed by the Danish government, proved that this is indeed possible. Modern wind turbine blades are designed to last for 20 to 25…
Predicting detectability and annoyance of EV warning sounds using partial loudness
Electric vehicles (EVs) are so quiet at low speeds that they can be a danger to pedestrians, cyclists and other road users. So the challenge for car manufacturers is to create sounds that are detectable but not annoying. To avoid them becoming a hazard, proposed…
Using hand-held arrays for automotive NVH measurements
Microphone arrays help engineers develop sound quality on vehicles, giving fast and effective noise source identification. Now, advanced new techniques improve the insights possible. One of the challenges for the automotive engineer is understanding the cause of a noise problem. Simple measurements, such as those…
The automotive industry getting faster every day because of increased use of driver in loop simulators
Author: Gary F. Newton Jr. Demands for accelerated product development and the pressure to “design it right the first time” are driving manufacturers to reduce prototypes, enhance engineering connections and share data to a wider audience with greater veracity, volume and velocity. Simulators have become…
Decode the Language of NVH
Author: Gary F. Newton Jr. The automotive engineering landscape has certainly evolved over the last five years for both the OEM and tier suppliers. For OEMs, new ownership models, rapidly advancing technical innovations, and growing competition across the mobility space have forced the industry to…