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Titlebook: Nonmetallic Materials and Composites at Low Temperatures; A. F. Clark,R. P. Reed (Chairman),G. Hartwig Book 1979 Springer Science+Business

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發(fā)表于 2025-3-21 19:34:13 | 只看該作者 |倒序瀏覽 |閱讀模式
書目名稱Nonmetallic Materials and Composites at Low Temperatures
編輯A. F. Clark,R. P. Reed (Chairman),G. Hartwig
視頻videohttp://file.papertrans.cn/668/667809/667809.mp4
叢書名稱Cryogenic Materials Series
圖書封面Titlebook: Nonmetallic Materials and Composites at Low Temperatures;  A. F. Clark,R. P. Reed (Chairman),G. Hartwig Book 1979 Springer Science+Business
描述Cryogenics is an emerging technology filled with promises. Many cryogenic systems demand the use of nonmetallics and composites for adequate or increased performance. Thermal and electrical insulations, potting for superconducting magnets‘ mechanical sta- bility, and composite structures appear to be some of the most significant applications. Research on nonmetallics at cryogenic temperatures has not progressed to the degree of research on metals. Nor can room temperature research be extrapolated to low tempera- tures; most polymers undergo a phase transformation to the glassy state below room temperature. Research by producers, for the most part, has not been prac- tical, because, except for LNG applications, the market for large material sales is not imminent. There are, however, many government- stimulated developmental programs. Research on nonmetallics thus is dictated by development project needs, which require studies orien- ted toward prototype hardware and specific objectives. As a result, research continuity suffers. Under these conditions, periodic topical conferences on this subject are needed. Industry and uni- versity studies must be encouraged. Designers and project
出版日期Book 1979
關(guān)鍵詞Metall; composite; composite material; composite materials; fatigue; glass; materials; mechanical propertie
版次1
doihttps://doi.org/10.1007/978-1-4615-7522-1
isbn_softcover978-1-4615-7524-5
isbn_ebook978-1-4615-7522-1
copyrightSpringer Science+Business Media New York 1979
The information of publication is updating

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Book 1979sed performance. Thermal and electrical insulations, potting for superconducting magnets‘ mechanical sta- bility, and composite structures appear to be some of the most significant applications. Research on nonmetallics at cryogenic temperatures has not progressed to the degree of research on metals
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Compressive Fatigue Tests on a Unidirectional Glass/Polyester Composite at Cryogenic Temperaturesd for struts necessitates the use of easily obtainable low-cost materials. This generally means that commercially fabricated composites will be used. The total capital cost must be balanced against operating cost.
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Variation of Dielectric Microwave Losses in Polyethylene as the Result of Different Sample Treatmentween 100 MHz and 10 GHz. The absolute measurement accuracy is better than l0. for the loss tangent, tan δ, being nearly one order of magnitude better than with any other procedure in any other frequency region.
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Polymers in Low Temperature Technology pipelines. They are used for insulation of superconducting cables, impregnation of superconducting energy storing magnets, and supporting devices of optical systems in space applications. The castings have to be processed free of voids and may not release volatile compounds at low temperatures.
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Powder-Filled Epoxy Resin Composites of Adjustable Thermal Contractionn 10 000 for a synchrotron. Moreover, these spacers, wedges of special shape, need high dimensional precision to obtain permissible homogeneity of the magnetic field and therefore cannot be individually machined. From the viewpoint of mass production, a molding method may be the best way to obtain the above mentioned accuracy.
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