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 Posted: Sat 17:05, 08 Jan 2011 Post subject: moncler daunenjacke Functional integration of high |
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Functional integration of high-damping composite structure
The damping alloy, but it is far better than the mechanical properties of the latter; the higher the loss factor, the poorer the mechanical properties of metal foams, metal foams can be said that in exchange for the expense of mechanical properties of high damping. 4 integration of structure and function of whether the new ideas of high damping materials to metal-based foam, plum create both a high damping properties, good mechanical properties and also that the functional structure of an integrated material? The answer is yes. As we all know, material damping is the use of micro-structure itself, the energy dissipation mechanism in the generation of potential damping, structural damping is to use a variety of materials, parts or more to help increase system consisting of macro-structural damping capacity of its own, such as able to combine the two ,[link widoczny dla zalogowanych], you can maximize the full potential of the volume of material damping. Metal foam is a foam material connected, if the choice of a preparation with high damping alloy matrix. Infiltration method and then use the composite measure of viscoelastic material into the channels inside the material to be prepared for a new type of metal foam-based composite materials. Such materials can not only maximize the use of the two energy dissipation mechanism, but also give full play to the high viscoelastic damping material itself. The mechanical properties of composite materials depends on foam mechanical properties of metal matrix. The factors are: alloy own performance and foam pore size and how much. Currently, most of the base material made of aluminum alloy, mechanical properties of very poor if used with good mechanical properties of ZA27 alloy to do the matrix, and minimize pore size, it might be prepared to meet or exceed the current strength aluminum alloy foam metal matrix. Therefore, the choice of a foam ZA27 alloy metal matrix, and infiltration composite viscoelastic material, is the preparation of integrated high-performance materials, functional structure of new and effective way. 5 Preparation of high-damping foam metal matrix composites were prepared by the basic metal foam are many ways: 1) casting, 2) plating method, 3) spray deposition, 4), powder metallurgy, 5) flow casting method, 6) centrifugal casting method. We were prepared using centrifugal metal foam (this method is simple, low cost, ease of production),[link widoczny dla zalogowanych], and then use the method of its infiltration into the paraffin wax, rosin, four other cheap plastic polymer materials, can be beneficial promote the integration of structure and function of high damping materials. 6 Conclusion metal foams prepared using ZA27 alloy matrix in the formation of a large number of the dispersed pores, and then into the use of infiltration techniques damping composite reinforced materials, so many fine constrained damping structure can maximize the full potential of the volume of material damping. References 1 hit list to stay and so on. Materials,[link widoczny dla zalogowanych], 1995 (2)-l5 ~ l62 take the hit list and so on. Aluminum Xing Green House box. T Xi'an Northwestern Polytechnical University Press, 1997,93 wall full of such vehicles. Light boxes are, 1991.41 (7) | 45 口 ~ 4944 to enjoy being the ancient and so on. A light box, 1988.39 (11) '703 ~? 095 flutter Ge and so on. * First Sino-Japanese left Taiwan, Yan Room technical sound pension papers. Chun Xi t1993 date received May 5, 1998 (Continued from page 23) and composite Nitrocarburizing treatment, compared with conventional quenching, life respectively 2.5 times and 3 times, with prominent use of effects . Table 140Cr copper roll life after different treatment note 'insult Yu conventional process for | 85O ℃ x8n offend sodium 15oxZh tempering. 5 Conclusion (1) the use of ammonia and acetone as the source of the 40Cr steel gas ammonia ion carbonitriding treatment (560 ℃ × 5h), with a high surface hardness,[link widoczny dla zalogowanych], wear resistance and anti-bite units and good features. Roll carbonitriding by plasma ammonia after life than the conventional quenching were 2.5 times higher. (2) 40Cr ammonia copper ion carbonitriding hardening after tempering of the composite process, not only strengthened by a thick layer of depth, good hardness gradient and residual stress distribution, and in the larger load show than the ion ammonia Nitrocarburizing better wear resistance, anti-bite units of, can significantly improve roll life. References 1 Li Yu greasy cups of spring. Fluoride ion good chase phase and single phase repeated nasal resistance of the morning, children cup, and toughness. Eph jI Jl of barrier treatment. 1984 (2) '45 ~ 642 cups of Wei - Bei Yu greasy. Handle the case of polyphony chloride nose of virtual buildings exterminate exterminate the nose's take on the mechanical properties of mourning. Qingdao Institute of Architectural Engineering. 1986 (2)-z7 ~ 353 Bureau led t. Mrs Kay Ball main bud. Heat Treatment of nose mourn humiliation. Beijing City Public leek published t Mu machine. I9904 Zhang morning and so on. After the odd ball mantle halberd snapped chloride Mourning fire polyphonic treatment. Dish is heat treatment. 1989 (7)-l2 ~ 2O Chun received date, March 3,[link widoczny dla zalogowanych], 1998, \
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