noise absorbing Articles
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Simulation tool for shock absorber noise prediction in time and frequency domains
This paper investigates the validity of a hydraulic simulation model to calculate the piston rod acceleration for further frequency domain analysis. At the present time, simulation results analyses of shock absorber characteristics are mostly restricted to the low frequency range for the hydraulic behaviour and the high frequency range for Noise, Vibration and Harshness (NVH) studies. However ...
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Reducing noise levels through engineering controls
It"s fairly easy to control personal exposure to noise by limiting exposure time or using hearing protectors like ear plugs or ear muffs. Engineering controls are usually applied to the machinery that produces noise. Imagine a 200 foot x 175 foot manufacturing facility with a 30 foot high ceiling. In this building are a variety of cut-off saws, grinders, millers and other metal-working ...
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Reducing Noise Levels through Engineering Controls
It’s fairly simple to control personal exposure to noise by limiting exposure time or using hearing protectors like ear plugs or ear muffs. Engineering controls are usually applied to the machinery that produces noise. OSHA regulations state that if noise exposure levels reach the 90dba PEL, then engineering controls must be pursued. Thus effort must be instituted to identify means to ...
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What is an anechoic chamber and how quiet can it be?
One of the things that we often talk about when we’re running our CPTC (Cirrus Product Training Courses) is how our hearing works and we often end up talking about how, if there’s no ambient sound, we can feel uncomfortable and can become disoriented very quickly. One of the best (or maybe the worst) places to experience this is in an anechoic chamber and during my time at the ...
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How big should urban green spaces be?
With cities poised to add 2.5 billion more people by 2050, now is a perfect time to get strategic about urban design. One of the big questions planners face is the best way to accommodate both built environments and natural settings, which provide important services such as making oxygen, cleansing water, absorbing noise, moderating summer heat, adding beauty and providing habitat for animals and ...
By Ensia
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Declogging inside silos: the Airchoc® 6 solution simplifies maintenance and spare parts costs
Created in 1978 by the French company STANDARD INDUSTRIE International, the AIRCHOC® is an air cannon that is placed preventively on raw material storage units. Thanks to regular shots, it allows to avoid production stops due to material accumulation. It is a cost-effective maintenance solution that uses 6 bar compressed air only when the shots are activated and is adaptable to many bulk ...
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Rockwool Sandwich Panel
Overview Rock Wool sandwich panel is usually used for wall and ceilings, which has certain requirements for fire resistance. In addition, it has very good thermal insulation properties. Thus, most of customers like the rock wool sandwich panels. Rockwool sandwich panels are commonly used in clean room engineering in electronics and pharmaceutical plants. Rock wool is a kind of inorganic fiber ...
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Acoustiblok® Quiets Well Motor Noise for California Water District
Acoustiblok recently resolved a noisy well motor issue that was affecting some nearby residents for Three Valleys Municipal Water District (Three Valleys MWD) in California. Ben Peralta, a Three Valleys MWD engineer working on the project said, “The new Acoustiblok All Weather Sound Panels perform better than the old barrier and are much better looking than the temporary barriers. We are ...
By Acoustiblok
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Printing Industry - Pollution Prevention Guidelines
Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum emissions ...
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