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composites
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  复合材料
    Study of MoSi_2-SiC Composites Synthesized in Situ Using Solid State Displacement Reactions
    固态置换反应原位合成MoSi_2-SiC复合材料研究
短句来源
    DESIGN CONSIDERATIONS ON STRUCTURAL COMPOSITES
    设计玻璃钢复合材料结构物时的一些考虑
短句来源
    MONITORING CURE PROCESS OF COMPOSITES WITH DYNAMIC DIELECTRIC ANALYSIS TECHNIQUE
    用动态介电分析技术监控复合材料的固化过程
短句来源
    A STUDY OF THE FRACTURE OF CARBON-CARBON COMPOSITES
    碳-碳复合材料断裂破坏的研究
短句来源
    A STUDY OF INTERFACE STRUCTURE OF 3D CARBON-CARBON COMPOSITES
    三向碳-碳复合材料界面结构研究
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  “composites”译为未确定词的双语例句
    Design Study of Radar Absorbent Material Composites
    宽频结构型微波吸收材料的设计研究
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    THE STUDY ON A NEW TECHNOLOGY OF PREPARING FRICTIONAL CARBON-CARBON COMPOSITES
    碳/碳复合摩擦材料制备新工艺研究
短句来源
    Present Situation and Prospect of Carbon/Carbon Composites for Aeroplane Brake
    碳/碳复合飞机刹车材料的现状及展望
短句来源
    The results show that,at a given sintering temperature,the porosity,wear loss and friction coefficient of composites decrease remarkably as the sintering pressure increases from 0.5 MPa to 1.5 MPa.
    结果表明:当烧结压力由0.5 MPa增加到1.5 MPa时,材料的孔隙度显著减少,材料的摩擦因数明显减小,磨损性能得到显著改善;
短句来源
    Study on the Mechanical Properties and Fracture Behavior of Single-direction B/Al Composites
    B/Al单向铺层复合板的力学性能及断裂行为的研究
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  composites
In this paper, the so-called approximate convexity and concavity properties of generalized Gr?tzsch ring function μα(r) by studying the monotonicity, convexity or concavity of certain composites of μα(r) are obtained.
      
Preparation and properties of polymer and quantum dot composites
      
The prepared composites were characterized with UV-Vis, PL, TEM, FTIR, CLSM and conductance titration etc.
      
Spectra results indicated that there existed interactions between nanocarbon and the polymethyl methacrylate (PMMA) matrix, which was consistent with the decrease in glass transition temperature of the composites with increase of carbon content.
      
TEM images revealed that a carbon encapsulated core/shell structure was formed in the composites, which could ensure good dispersion of carbon nanoparticles within the PMMA matrix.
      
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Being the main material of various advanced composites, carbon fibre with high strength and high modulus to weight ratios is widely used in astronautics, aviation, atomic energy, chemistry, machinery and other area of industry. The physical, chemical and mechanical properties of carbon fibre are directly and inherently related to its microstructure. It is important to examine and to determine the size, the feature and the state of the microstructure units-the crystallites of carbon fibre, either for improving...

Being the main material of various advanced composites, carbon fibre with high strength and high modulus to weight ratios is widely used in astronautics, aviation, atomic energy, chemistry, machinery and other area of industry. The physical, chemical and mechanical properties of carbon fibre are directly and inherently related to its microstructure. It is important to examine and to determine the size, the feature and the state of the microstructure units-the crystallites of carbon fibre, either for improving the technology and quality of the carbon fibre products, or for researching and using the composites. The X-ray diffraction technique is the most powerful meanes for researching the state of microstructures. In this artictle, is briefly introduced the method of using X-ray diffraction to measure dimensions and status parameters of the carbon fibre microcrystal, and the new concept of the degree of order presented. Experiments for the purpose of comparison have been made on the technology for three kinds of precursors and on the carbon fibres manufactured by three kinds of methods of pre-oxidation, and research has carried out on three kinds of graphite fibres manufactured at home and abroad. It has been proved, that the methods used are reasonable and effective and can be applied to research into various ordinary graphite materials, and carbon composities.

具有高比强、高比模的碳纤维是各种高级复合材料的主要原料,广泛用于宇航,航空、原子、化工、机械等工业。碳纤维的物理、化学、机械性能与其显微结构间有着密切的内在联系。研究和测定碳纤维的显微结构单元——微晶的尺寸、组织和状态,不论对改进工艺、提高产品质量,还是在复合材料的研制和应用上都有重要意义。x射线衍射技术是研究物质微观结构状态的最有力手段。本文概括地介绍了用x射线衍射法测定碳纤维微晶尺寸和组态参数的方法。提出了有序度的新概念。对国产的三种原丝工艺和三种预氧化工艺制成的碳纤维进行了试验和分析对比,并就国内外三种不同原料制成的石墨纤维做了研究。试验证明该法是合理的、有效的,并可推广用于一般碳素材料及碳的复合材料。

In this study the sonic resonance technique was used to determine the Young's elastic moduli, the controlled surface microflow technique was used to measure the fracture toughness and the critical strain energy release rate was calculated.The Young's elastic moduli and fracture toughnesses of three different glassy carbons were measured from room temperature to 1023°K. The fracture, oxidized and machined surfaces were investigated and observed by scanning electon microscope. The critical strain energy release...

In this study the sonic resonance technique was used to determine the Young's elastic moduli, the controlled surface microflow technique was used to measure the fracture toughness and the critical strain energy release rate was calculated.The Young's elastic moduli and fracture toughnesses of three different glassy carbons were measured from room temperature to 1023°K. The fracture, oxidized and machined surfaces were investigated and observed by scanning electon microscope. The critical strain energy release rates of the galssy carbons were analyzed and compared with the polycrystalline griphites and carbon-carbon composites.

本文简要介绍用“声共振法”测材料的杨氏模量,用“控制裂纹法”测材料的断裂韧性以及材料的极限应变能释放率的计算。对三种玻璃碳的室温-1023°K的杨氏模量和断裂韧性进行了测定,用电子扫描显微镜对玻璃碳的断裂、氧化和加工表面进行研究观察,分析了玻璃碳的极限应变能释放率并与多晶石墨及碳-碳复合材料进行比较。

During the last 20 years, there have been vast researches and developments on composite materials, especially on their raw materials and their end uses. But, the literature of design philosophy is relatively rare. The status of structural design is merely at the so-called "replacement design' stage.From the designer's point of view, the author would discuss some fundamental considerations on structural composites. First, the properties of composites can be tailored. Next, the configuration of structures...

During the last 20 years, there have been vast researches and developments on composite materials, especially on their raw materials and their end uses. But, the literature of design philosophy is relatively rare. The status of structural design is merely at the so-called "replacement design' stage.From the designer's point of view, the author would discuss some fundamental considerations on structural composites. First, the properties of composites can be tailored. Next, the configuration of structures is unrestrained. The last consideration concerns the linear elastic properties and wide scatter of strength.In order to make a good structural design of composite materials, it is necessary to be clear on the external loading and environment conditions, and obtain the allowable data from large sample testing. Then, the designer has to analyze the worst conditions that the structure is capable of sustaining.

在使用玻璃钢/复合材料进行结构物设计时,至少需考虑下面三个特点,即:材料性能的可设计性;结构物形状的无限制性;材料的线性弹性与强度分散性。

 
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