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Shock Mount
A shock mount or isolation mount is a mechanical fastener that connects two parts elastically to provide shock (mechanics), shock and vibration isolation. Isolation mounts allow equipment to be securely mounted to a foundation and/or frame and, at the same time, allow it to float independently from it. Uses Shock mounts are found in a wide variety of applications. They can be used to isolate the foundation or substrate from the dynamics of the mounted equipment. This is vital on submarines where silence is critical to mission success. Yachts also use shock mounts to dampen mechanical noise (mainly transmitted throughout the structure) and increase comfort. This is usually done through elastic supports and transmission couplings. Other common examples are the motor and transmission mounts used in virtually every automobile manufactured today. Without isolation mounts, interior noise and comfort levels would be significantly different. Such shock and vibration-isolation mounts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elastomer
An elastomer is a polymer with viscoelasticity (i.e. both viscosity and elasticity) and with weak intermolecular forces, generally low Young's modulus (E) and high failure strain compared with other materials. The term, a portmanteau of ''elastic polymer'', is often used interchangeably with ''rubber'', although the latter is preferred when referring to vulcanisates. Each of the monomers which link to form the polymer is usually a compound of several elements among carbon, hydrogen, oxygen and silicon. Elastomers are amorphous polymers maintained above their glass transition temperature, so that considerable molecular reconformation is feasible without breaking of covalent bonds. Rubber-like solids with elastic properties are called elastomers. Polymer chains are held together in these materials by relatively weak intermolecular bonds, which permit the polymers to stretch in response to macroscopic stresses. Elastomers are usually thermosets (requiring vulcanization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cushioning
Package cushioning is used to protect items during shipment. Vibration and impact shock during shipment and loading/unloading are controlled by cushioning to reduce the chance of product damage. Cushioning is usually inside a shipping container such as a corrugated box. It is designed to absorb shock by crushing and deforming, and to dampen vibration, rather than transmitting the shock and vibration to the protected item. Depending on the specific situation, package cushioning is often between thick. Internal packaging materials are also used for functions other than cushioning, such as to immobilize the products in the box and lock them in place, or to fill a void. Design factors When designing packaging the choice of cushioning depends on many factors, including but not limited to: * effective protection of product from shock and vibration * resilience (whether it performs for multiple impacts) * resistance to creep – cushion deformation under static load * material cos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microphonics
Microphonics, microphony, or microphonism describes the phenomenon wherein certain components in electronic devices transform mechanical vibrations into an undesired electrical signal (noise). The term comes from analogy with a microphone, which is intentionally designed to convert vibrations to electrical signals. Description When electronic equipment was built using vacuum tubes, microphonics were often a serious design problem. The charged elements in the vacuum tubes can mechanically vibrate, changing the distance between the elements, producing charge flows in and out of the tube in a manner identical to a capacitor microphone. A system sufficiently susceptible to microphonics could experience audio feedback, and make noises if jarred or bumped. To minimize these effects, some vacuum tubes were made with thicker internal insulating plates and more supports, and tube-socket assemblies were sometimes shock-mounted by means of small rubber grommets placed in the screw hol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MIL-S-901
Military Specification MIL-S-901D is for high-impact mechanical shock which applies to equipment mounted on ships. Its publication date was Mar 17, 1989. Two levels apply: Grade A items are items which are essential to the safety and continued combat capability of the ship; Grade B items are items whose operation is not essential to the safety and combat capability of the ship but which could become a hazard to personnel, to Grade A items, or to the ship as a whole as a result of exposure to shock. "Grade C", signifying that no shock qualification is required, is also sometimes referenced in acquisition documents even though the term has no official standing in the specification document. Qualification testing is performed on a specified machine or on a barge floating in a pond where an explosive charge is detonated at various distances and depths in the pond to impart shock to the barges. The MIL-S-901D specification covers shock testing requirements for ship board machine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shock Absorber
A shock absorber or damper is a mechanical or hydraulics, hydraulic device designed to absorb and Damping ratio, damp shock (mechanics), shock impulses. It does this by converting the kinetic energy of the shock into another form of energy (typically thermal energy, heat) which is then dissipated. Most shock absorbers are a form of dashpot (a damper which resists motion via viscous friction). Description Pneumatic and hydraulic shock absorbers are used in conjunction with cushions and springs. An automobile shock absorber contains spring-loaded check valves and orifices to control the flow of oil through an internal piston (see below). One design consideration, when designing or choosing a shock absorber, is where that energy will go. In most shock absorbers, energy is converted to heat inside the viscous fluid. In hydraulic cylinders, the hydraulic fluid heats up, while in Pneumatic cylinder, air cylinders, the hot air is usually exhausted to the atmosphere. In other types of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vibration Isolation
''Vibration isolation'' is the prevention of transmission of vibration from one component of a system to others parts of the same system, as in Building, buildings or mechanical systems. Vibration is undesirable in many domains, primarily engineered systems and habitable spaces, and methods have been developed to prevent the transfer of vibration to such systems. Vibrations propagate via mechanical waves and certain mechanical linkages conduct vibrations more efficiently than others. Passive vibration isolation makes use of materials and mechanical linkages that absorb and damp these mechanical waves. Active vibration isolation involves sensors and actuators that produce disruptive interference that cancels-out incoming vibration. Passive isolation "Passive vibration isolation" refers to vibration isolation or mitigation of vibrations by passive techniques such as rubber pads or mechanical springs, as opposed to "active vibration isolation" or "electronic force cancellation" employi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astatic Crystal Mic
The Astatic was a French cyclecar manufactured from 1920 to 1922 by Automobiles Astatic, Saint-Ouen, Seine, France. Built at Saint-Ouen, the car was an attempt to market a vehicle with independent suspension Independent suspension is any automobile suspension system that allows each wheel on the same axle to move vertically (i.e. reacting to a bump on the road) independently of the others. This is contrasted with a beam axle or deDion axle system in ... all round. This was done by coupling each wheel to a horizontal coil spring by a right angle link. At the rear the differential housing was fixed to the chassis and drive was taken to the wheels through jointed drive shafts. The engine was an 894 cc or 1100 cc S.C.A.P. References Cyclecars Vintage vehicles Defunct motor vehicle manufacturers of France {{Vintage-auto-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AKG Perception 120 USB Condenser Microphone With SH 100 Shock Mount , an art museum in Buffalo, New York
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AKG may refer to: * ''alpha''-Ketoglutaric acid, also known as 2-Ketoglutaric acid, 2-Oxopentanedioic acid, 2-Oxoglutamate, 2-Oxoglutaric acid & Oxoglutaric acid *Asian Kung-Fu Generation, a Japanese rock band * Alternatív Közgazdasági Gimnázium, a high school in Budapest, Hungary * A. K. Gopalan (1904–1977), Indian communist leader * ''A. K. G.'' (film), a 2007 Indian Malayalam documentary film *The ICAO Code for No. 84 Squadron RAF, United Kingdom *AKG (company), an acoustics engineering and manufacturing company *Buffalo AKG Art Museum The Buffalo AKG Art Museum, formerly known as the Albright–Knox Art Gallery, is an art museum located adjacent to Delaware Park-Front Park System, Delaware Park, Buffalo, New York, Buffalo, New York, United States. The museum shows modern art a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isolation Mount - Coil Spring
Isolation is the near or complete lack of social contact by an individual. Isolation or isolated may also refer to: Sociology and psychology *Social isolation *Isolation (psychology), a defense mechanism in psychoanalytic theory *Emotional isolation, a feeling of isolation despite a functioning social network * Isolation effect, a psychological effect of distinctive items more easily remembered Mathematics * Real-root isolation * Isolation lemma, a technique used to reduce the number of solutions to a computational problem. * Isolated point, a topological notion of having no points near a given point Natural sciences *Electrical or galvanic isolation, isolating functional sections of electrical systems to prevent current flowing between them *An isolated system, a system without any external exchange *Isolating language, a type of language with a low morpheme-per-word ratio *Isolation (microbiology), techniques to separate microbes from a sample containing mixtures of microbes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viscoelastic
In materials science and continuum mechanics, viscoelasticity is the property of materials that exhibit both Viscosity, viscous and Elasticity (physics), elastic characteristics when undergoing deformation (engineering), deformation. Viscous materials, like water, resist both shear flow and Strain (materials science), strain linearly with time when a Stress (physics), stress is applied. Elastic materials strain when stretched and immediately return to their original state once the stress is removed. Viscoelastic materials have elements of both of these properties and, as such, exhibit time-dependent strain. Whereas elasticity is usually the result of chemical bond, bond stretching along crystallographic planes in an ordered solid, viscosity is the result of the diffusion of atoms or molecules inside an amorphous material.Meyers and Chawla (1999): "Mechanical Behavior of Materials", 98-103. Background In the nineteenth century, physicists such as James Clerk Maxwell, Ludwig Boltzm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
