Applications military electronics

RAC publications include data summaries for specific component types, such as hybrid microcircuits, small, medium and large-scale integration digital devices, linear and interface devices, digital monolithic devices, and discrete semiconductors. In addition, there are reliability and equipment maintenance data books that provide the failure and repair time data on military electronic equipment by application such as subsystem. 

Polymer-clay nanocomposites (PCN) are a class of hybrid materials composed of organic polymer matrices and organophilic clay fillers, introduced in late 1980s by the researchers of Toyota (Kawasumi, 2004). They observed an increase in mechanical and thermal properties of nylons with the addition of a small amount of nano-sized clays. This new and emerging class of pol miers has found several applications in the food and non-food sectors, such as in constmction, automobiles, aerospace, military, electronics, food packaging and coatings, because of its superior mechanical strength, heat and flame resistance and improved barrier properties (Ray et al., 2006). 

World War II increased both the demand and the number of applications for plastics. Just prior to the war, plastics were not only developed as substitutes for materials which were in short supply, notably rubber and gutta percha, but also to out-perform the then available plastics. Wartime demands encouraged scientists to develop polymers that could meet the demands of the military, electronics and food industries. Before 1940, plastics had mainly been used to make decorative and ephemeral pieces, but the war demanded more performance-based... 

O. Hnojewyj and M. Murdoch, Ultraviolet Curable Materials for Military Electronic Applications, Paper presented at Third Annual U.S. Navy Best Practices Workshop, San Diego, CA, September 1989 (authors from Litton Industries, Applied Technology Division, Sunnyvale, CA). 

Zinc air (Zn/02) Very high energy density, low cost, very sensitive to environmental conditions and duty cycle Hearing aids, pagers, medical devices, military electronics, and other special applications... 

MAJOR PRODUCT APPLICATIONS exterior paints, coatings, synthetic plastering compounds, thermoplastic road marking compounds, adhesives, sealants, plastics, abrasives, cables, stucco, kitchen sinks and laminates, dental, military, electronics... 

The major objectives while designing future textiles for military applications will focus on combining high-tech electronics with light weight and comfort in textile garments. Furthermore, the application of nanotechnology in e-textiles can be used to endow soldiers with improved performance, endurance and communication capabilities. In this chapter, various applications of electronic textiles in military are summarised. Electronic textiles not only increase performance, but also add various other functionalities that have never been realised before. In addition, the difficulties... 

Initially, conductive fibers were mainly used in technical areas such as clean room garments, military apparel, medical application, and electronics manufacturing (Resistat, 2015). They can have a variety of functions, like antistatic apphcations (Sophitex, 2015), ElectroMagnetic Interference shielding (LessEMF, 2015), electronic apphcations, infrared absorption or protective clothing in explosive areas (Mcfarland etal., 1999). 

The Li/Mn02 battery is used in a wide variety of applications such as long-term memory backup, safety and security devices, cameras, many consumer devices and in military electronics. It has gained an excellent safety record during the period since it was introduced. 

Useful shielding effectiveness values for commercial applications in electronic housings are in excess of 40 dB at frequencies of 1 GHz. For military applications and for near-field shielding requirements, even better performance, in the region of 80-100 dB, is required. 

In estimating Trm and Trp by the methods referenced above, use is often made of standard times for elementary actions for example, MIL-HDBK-472 gives tables of such times. It must be stressed that the standard times of MTL-HDBK-472 are only applicable to electronic and electromechanical systems under conditions of military... 

Glass-ceramics contain an amorphous phase and a crystalline phase minimum. Their attractive properties are chemical durability, mechanical strength, lower thermal expansion coefficient compared to glasses, dielectric constant, and electromagnetic radiation transmittance. Because of these properties, they find applications in electronics, military, vacuum technology, households. 

Khan MM. Environmental testing for commercial and military applications. In Electronic Materials Handbook. Vol 1. Packaging. Materials Park, OH ASM International 1989 493—503. 

Applications include mines, munitions, buoys, beacons, pyrotechnic igniters, missiles, sealed metering equipment, indicator lights and civil military electronic devices. 

Many North American companies are concerned that lead-free components and assemblies will not meet the reliability or functionality requirements necessary for high-end equipment supplied to banks, air traffic control systems, web-based businesses, and other mission-critical applications. Accordingly, manufacturers of aerospace and military electronics have no plans to introduce lead-free solders. There are too many reliability concerns to utilize lead-free solder materials in high-reliability equipment related to the mechanical characteristics of the materials themselves and the effects of high temperatures to process them. The effect of new and modified intermetallic compound phases within solder joints and at the interfaces is yet an additional concern, and there are many more. 

Electrical Applications. The largest application of PTFE is for hookup and hookup-type wire used in electronic equipment in the military and aerospace industries. Coaxial cables, the second largest appHcation, use tapes made from fine powder resins and some from granular resin. Interconnecting wire appHcations include airframes. Other electrical appHcations include computer wire, electrical tape, electrical components, and spaghetti tubing. 

A major contribution from chemistry and chemical engineering has been the development of materials with important military applications. Chemists and chemical engineers, working with experts from areas such as electronics, materials science, and physics, have contributed to such developments as new explosives and propellants, reactive armor (a complex material with an explosive layer that can reduce the penetration of an incoming projectile), and stealth materials that reduce the detectability of aircraft by radar. 

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