Noise, Vibration, and Harshness (NVH)
Latest Stories
News Unmanned Systems
Turning the Vehicle into a Giant Microphone
When an emergency vehicle is approaching but its blaring siren isn’t heard by nearby motorists, all are put at risk. Engineers at Harman International have developed novel sensor technology that...
Articles Energy
Vibration Testing NASA’s X-57 Maxwell Electric Aircraft
In place of the usual gasoline-powered motors, the X-57 has two all-electric motors powered by traction batteries.
News Energy
Electrification Forces Fresh Perspectives on Vehicle NVH
The quietness of EVs is, for many, a compelling selling point. But vehicles becoming inherently quieter overall hasn’t translated into making the job of noise abatement any easier...
Articles Mechanical & Fluid Systems
RF Technology Helps Connect Avionics Systems
A modular connector system provides smaller, lighter interconnections for denser, more tightly packed avionics systems.
Articles Electronics & Computers
Ruggedization of Electronics for Deployed Military Environments
Commercial-grade electronics will simply not survive in the extremes of military environments.
News Aerospace
Modern Approaches to Electric Vehicle Noise and Vibration
Often what comes to mind when discussing electric vehicles are range, charging infrastructure, fast charging, battery costs, etc. Often overlooked are the electric vehicle’s noice...
News Materials
Metamaterials R&D Targets NVH Abatement
Acoustics engineers have a broad variety of materials from which to choose for reducing noise, vibration and harshness (NVH) in vehicles. But their selection often comes with a measurable downside:...
Articles Energy
Designing Battery Packs for Harsh Environment Mission-Critical Devices
Learn about design considerations for manufacturing a battery pack that operates in extreme temperatures, absorbs shock and vibration, and maintains a watertight seal.
Articles Test & Measurement
Tips for Reducing Error When Using Eddy Current Measuring Techniques
Inductive eddy current technology is an extremely versatile non-contact method for measuring an object's position, distance, or vibration.
Technology Report Materials
2020 Explorer Will Be First Product to Emerge – More Quietly – from Ford’s Newest NVH Lab.
The 2020 Explorer will be the first Ford product engineered via the automakers new driving dynamics laboratory, which provides multiple tools...
News Aerospace
NASA Partners with ONERA on Low-Boom Supersonic Flight
Last week, NASA and France’s Office National d'Etudes et de Recherches Aerospatiales (ONERA) signed a research agreement to collaborate on mitigating sonic boom noise produced by...
News Test & Measurement
ONERA and DLR Shake up the Airbus BelugaXL Cargo Aircraft
The first five Airbus BelugaXL aircraft are slated to enter service in 2019. But, to reach that milestone, an exhaustive schedule of test and certification work must be completed.
News Propulsion
X Marks the Spot
LiquidPiston Inc., an advanced internal combustion engine (ICE) technology company, has reimagined combustion engines with a new platform that can run on multiple fuels, including diesel, jet fuel, and gasoline. This...
Application Briefs Sensors/Data Acquisition
Hull Vibration Monitoring System
Brüel & KjærNærum, Denmark+45 7741 2000For more info click here BAE Systems has awarded Brüel & Kjær a Design Development Agreement to deliver a Hull Vibration Monitoring System (HVME) for the UK...
Application Briefs Defense
Helicopter Vibration Control System
LORD Corporation Cary, NC 877 ASK LORD (275 5673)www.lord.com LORD Corporation recently announced product qualification for their Improved Vibration Control System (IVCS) for the Boeing H-47 Chinook helicopter. Under contract with Boeing since Sept. 2013, LORD has now completed all program milestones and received...
Briefs Aerospace
Simultaneous Vibration Suppression and Energy Harvesting for a Multifunctional UAV Spar
The goal of this work was to investigate using harvested energy to directly control the vibration response of flexible aerospace systems. Small,...
News Motion Control
Compact Active Vibration Control System
This innovation consists of an analog controller, diamond-shaped patch actuator, and point sensors (such as accelerometers). The actuator is designed to couple to the flexural response of the structure in the same manner as a group of point sensors. This results in a co-located transducer pair. The signals...
Briefs Unmanned Systems
Simultaneous Vibration Suppression and Energy Harvesting
The goal of this work was to investigate the concept of using harvested energy to directly control the vibration response of flexible aerospace systems. Small, lightweight, flexible micro...
Briefs Physical Sciences
Bi-Axial Vibration Energy Harvesting
For air platforms, the installation of Structural Health Monitoring (SHM) systems is complicated by the fact that the majority of SHM devices need to be fitted on internal aircraft structure, underneath the...
Briefs Physical Sciences
Nonlinear Acoustic Metamaterials for Sound Attenuation Applications
An acoustic crystal composed of tightly packed spherical particles can exhibit a wide spectrum of acoustic properties with responses varying from linear to highly nonlinear...
Briefs Physical Sciences
Diode Laser Sensor for Scramjet Inlets
The supersonic combustion ramjet (scramjet) engine is one of the more promising high-speed flight propulsion technologies. One of the reasons for this is the simplicity of the engine design, having no...
Briefs Physical Sciences
Acceleration Strain Transducer Containing Cantilever Flaps
A recently invented acceleration strain transducer is based on the principle of a conventional spring-and-mass acceleration transducer combined with a linear strain sensor that measures...
Briefs Photonics/Optics
Laser-Based System for Measuring and Analyzing Vibrations
A system for noncontact measurement and analysis of vibrations of an electronic circuit board or a similar lightweight, nominally flat, rectangular object has been developed. This...
Briefs RF & Microwave Electronics
Arcing and Vibration Tests of High-Power Patch Antennas
Electric-breakdown and vibration tests were performed on one-patch and two-patch versions of a prototype of a patch antenna designed to radiate a continuous- wave or pulsed signal in the S...
Briefs Mechanical & Fluid Systems
Hybrid Three-Axis Vibration Reducers
Hybrid (passive/active) devices have been developed to reduce the magnitudes of possibly threedimensional vibrations coupled from vibrating equipment on platforms to bases that support the platforms. These...
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A New Approach to Manufacturing Machine Connectivity for the Air Force
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