When does noise and vibration become a problem?
A noise and vibration problem often shows itself very late in the design cycle or even after the product has been released. This occurs for a variety of reasons, including poor target setting, lack of design consideration and lack of reaction to warnings.
What can be used to solve noise and vibration problems?
A variety of problem-solving noise and vibration tools are at the engineer’s disposal: order tracking; modal analysis; noise mapping techniques such as sound intensity; near-field acoustic holographic and beamforming; and several others. Long-Term Goal of Problem Solving
What is the technical guideline for assessing vibration?
Executive summary Assessing vibration: a technical guidelineis based on guidelines contained in BS 6472–1992, Evaluation of human exposure to vibration in buildings(1–80 Hz). BS 6472 (current and former versions) has guided the Department of Environment and Conservation’s (DEC) evaluation of vibration since the mid-1980s.
Why did Dec come up with the vibration guideline?
In keeping with its charter to protect the health and wellbeing of the community, DEC has developed this guideline to aid in protecting people from values of vibration above preferred and maximum values felt inside buildings.
How to test for noise, vibration and harshness?
• Given Vehicle #1 with a NVH problem, you will test drive the vehicle and verify the nature of the noise, vibration or harshness. You will use a Sirometer to measure the vibration fre- quency, calculate the ‘Order’ of the vibration and identify the cause of the problem.
Are there any sites that sell noise products?
We have come across a few websites that show-case or sell our products at too-good-to-be-true prices. Please steer away from such sites as they sell counterfeit products and Noise cannot ensure their authenticity. Follow us on YouTube or hit us up on Twitter to check out the tutorial videos or to get in touch with us.
How to find out if your car has a vibration problem?
You will use an Electronic Vibration Analyzer to measure both the Frequency and G forces of the vibration, and identify the cause of the problem. • Given Vehicle #3 with a NVH problem, you will test drive the vehicle and verify a vibration at cruising speed.
What to do if you hear wind noise in your car?
• Given a vehicle with a concern of wind noise, you will use a Steelman Engine Ear to identify the location of the air leak, and the components or repairs necessary to repair the problem. • Given a vehicle with a NVH concern, you will check ASIST and the ESM for information regarding the symptom.