Shock Absorbers, Dampers, Gas Springs . . . |  |
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Floored by Shock Absorber  These ProFrame floor panels are the newest version from the manufacturer. What makes them new and improved is the specially designed shock absorbers at the corners. The company claims that the shock absorption quality will prevent breakage and minimize impact. The panel surfaces have a slightly wood-structured concrete finish. | Different Strokes  These tandem gas springs operate with two chambers quasi-connected in series and filled with different volumes of nitrogen. Each of the two 40 mm diameter cylinders produces different levels of force and have different stroke lengths. The manufacturer claims the units are ideal for use on heavy lids and other weighty hinged items. |
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FAA Makes Some Noise  A two-year study of Lambert-St. Louis International Airport's noise abatement program has come to an end. The FAA concluded that noise levels from aircraft and airport operations are being successfully mitigated. The airport has been making improvements in those areas for 30 years by paying close attention to aircraft departure routes and time restrictions on operations and movements. | That's a Bit Harsh  A complete suite of noise and vibration analysis software is being marketed to harsh machine condition monitoring environments. A stand-alone module provides fast acquisition of acoustical and vibration data and information logging. Software developers say that the software enables more customized and automated testing and measurement procedures. |
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Noise Reduction Trim
Metso | Vibration Alarm
Meggitt Sensing Systems — Wilcoxon Research |
 Metso Automation offers the Q-Ball® noise reduction trim, installed in Metso Automation rotary valves, providing full control performance even during different flow conditions. The package meets application demands by delivering high capacity, noise and vibration reduction, tight shutoff, quick opening, and robust construction. |  Wilcoxon Research received CE approval for the iT401 Alarm. The iT401 Alarm, which accepts any 4-20 mA loop powered signal and alarms based upon user-defined criteria, is now approved for sale in European countries recognizing CE mark approval. |
Vibration / Acceleration Control Systems . . . | |
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A Meter for Your First Time  This vibration meter operates with a constant-current type accelerometer. Acceleration, velocity, and displacement can be measured in three ranges, offering ease and convenience, claims the company. Peak values can be selected while a filter eliminates unwanted signals. The company states that this meter is suited to first-time buyers. | Bleeding Out Vibration  A new book attempts to solve the all-too-common problem of cavitation that plagues engineers. Internal cavitation, which occurs when a void or bubble in a liquid rapidly collapses and produces a shock wave, can affect machinery. This author describes how a "bleeding system" can achieve higher rates of efficiency and productivity by transferring cavitation energy to other parts of a system to minimize vibration. |
Machine Mounts, Vibration Isolators . . . | |
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A Conical Solution  The conical shape of these vibration isolation mounts is specifically designed to absorb the impact of accumulated kinetic energy. The rubber body material is RoHS compliant and is well suited to act as an end bumper on a conveyor line. Tapped hole or threaded stud versions of the mounts are available. | Up on the Roof  Building owners in coastal areas of the country that are prone to hurricanes and bad wind storms are finding some relief from rooftop HVAC isolators, as explained in this video. Sold in pairs, the isolators can reduce vibration emissions from these rooftop condensers by up to 90%, the company claims. The vibration isolators can be customized to suit each individual application. |
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LP-13 Shake Absorber Vibration Isolation Pads
Kellett Enterprises, Inc. | V-Spring Engine Mounts
Barry Controls Industrial and Defense Division |
 Since 1960, Kellett Enterprises, Inc., has been resolving vibration issues around the world. At first glance, many shake absorber pads look similar; but that's where the similarity ends. Not only do Kellett Enterprise customers receive the most efficient and quality-controlled effectiveness in any industry, they obtain the most advanced energy and cost-saving technology available. |  Barry V-Spring Engine mounts isolate vibration, absorb shock, and attenuate noise due to structure-borne vibration. These mounts feature uniquely tuned stiffness to achieve optimum performance and ride comfort.
Features low natural frequency, long, dependable service life, and off-the-shelf availability. |
Careers & Commentary . . . | |
The Right Tool for the Job  Engineers cannot fix a problem until they know the root cause of the problem. Two analysis tools can resolve the situation, but knowing which tool to use and when can be a problem all its own. For instance, Six Sigma is for common-cause problems, where factors inherent to the product or the process deviate over time. Consider a machine that vibrates. Over time, the vibration could loosen bolts on the machine.Then there's KT Problem Analysis, designed for special-cause problems, in which something has changed to cause a problem. The two tool sets are not in competition, but instead have their own place in different issues. It's comes down to using the right tool for the job. |
The Panels are Supa, Man  An open floor plan design sounded great in theory, but posed some acoustical challenges for the architects of this building in Queensland, Australia. The goal was to create a communal workspace spanning five levels. Sound reverberation was addressed by installing floating ceiling panels. Not only do the panels enhance the aesthetics of the ceiling space, but they are FSC-certified and achieved a Green Star rating for what is being called an award-winning design. | Share Your Thoughts . . . About This Month's Topic  Making Waves over Tidal Energy
Noise is one of the many potential environmental impacts of wave and tidal energy, yet there are no global standards governing the noise generated by wave energy machines. Is the noise worth the potential benefit of energy independence? |
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Cylindrical Mounts