Lightweight constructions applications

Conveyor-Belt Devices The metal-belt type (Fig. 11. 55) is the only device in this classification of material-haudhug equipment that has had serious effort expended on it to adapt it to indirecl heat-transfer seiwice with divided solids. It features a lightweight construction of a large area with a thin metal wall. ludirect-coohiig applications have been made with poor thermal performance, as could be expected with a static layer. Auxihaiy plowlike mixing devices, which are considered an absolute necessity to secure any worthwhile results for this seiwice, restrict applications. 

The following requirements for a combat tourniquet are the result of data, discussions, and conclusions drawn from the above conferences and studies. The requirements listed below, which are different than those for a clinical tourniquet, emphasize factors including self-application and operation, mobility, and lightweight construction. 

With regard to azide-free gas mixtures, there have been numerous patents and initial applications since the early nineties. These new gas mixtures generate more gas per gram (gas yields from gas mixtures containing NaN3 0.30-0.35 l/g) and thus enable smaller and to some extent a more lightweight construction of the gas generators. 

These fibers are, due to their high thermal stability, particularly suitable for applications in high temperature thermal insulation and for the manufacture of metal matrix and ceramic matrix composites. They arc clearly superior to metal materials due to their lower weight, particularly in the lightweight construction of accelerated structure elements for which the basic material should represent an improve-... 

New applications of adhesive bonding can be expected where the specific advantages of this joining technique will be usable. Due to lightweight construction, which will be more and more important, outside panels must be used as supporting parts of the body structure. Conventional sheet steel constructions often show welded joints at the visible... 

Environmental — Lightweight constructions save energy in mobile applications... 

It is obvious that certain actuating properties of transducer materials are far beyond the ones of conventional actuating principles. This enables to use them in special application areas such as lightweight construction, active vibration control, or the development of highly dynamic systems for instance. 

The application fields of such structures will be found where lightweight construction allows a higher acceleration capacity at the same driving power or energy savings. This is why bent profiles have been used more and more in various fields of traffic engineering (automobile industry, utility vehicles constmction, railway... 

C/SiC and C/C-SiC applications lie in fields where conventional materials, due to their insufficient mechanical properties at high temperatures or limited damage tolerance behaviour can no longer be considered and includes in principal all areas of lightweight construction. Some examples are given for high temperature (T > 1,000 °C), medium temperature and low temperature (T < 450 °C) regimes. 

Wood is the most appropriate material for a solid sandwich core and has been used extensively for many applications, such as doors and partitions. For lightweight constructions flat or end grain balsa is still used, although this is being superseded by synthetic materials. Bonded microspheres of inorganic materials, glass, ceramics, etc. to form syntactic foams are useful core materials. 

Fibre-reinforced polymer composites (FRP) are lightweight and very durable, but their initial cost is higher than that of steel. However, these materials compare well on the basis of their lower construction and long-term maintenance costs. FRP have not realised their potential in construction applications. Contributing factors include the perceived expense and a lack of confidence on the part of clients and designers. 

Elastic properties, specifically Young s modulus E, have attained paramount interest for a variety of glass applications such as accelerated devices, including hard discs and surgery equipment, lightweight construction, and composite materials [46],... 

Alloy 6106 is an extrusion alloy that has been specially developed by Pechiney for many applications related to lightweight constructions. It is very easy to extrade, has a good aptitude to press quenching and good mechanical strength, in the order of 265 MPa, which is midway between 6060 and 6005A. 

One application for organic electroluminescent materials is in the construction of lightweight backlights for LC displays (see Chapter 3, section 3.8). If organic electroluminescent (OEL) materials emitted polarised light they could make the polariser... 

Foams. Sulfur can be foamed into a lightweight insulation that compares favorably with many oiganic foams and other insulating materials used in construction. It has been evaluated as thermal insulation for highways and other applications to prevent frost damage (63) (see Foamed PLASTICS Insulation, thermal). 

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