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-established structure, theoretical derivation for stiffness matrix calculation by free response (SMCbyFR) and the method of stiffness identification by stiffness matrix disassembly (SIbySMD) are proposed...-elastic-support rigid plate; free response; stiffness matrix disassembly......
, the stable condition was obtained through linear matrix inequality (LMI) and also the gain coefficient of repetitive system. Numerical simulation shows an exceptional feasibility of this proposal with remarkable robustness and tracking speed.Key words:state observer; two-dimensional discrete system; repetitive control; linear matrix inequality......
Cu阳极相间的电偶腐蚀, 另外, SiC与Al间也存在电偶腐蚀倾向. 关键词: 2024Al; 金属基复合材料; 点蚀形貌 中图分类号: TG174 文献标识码: A Pitting behavior of SiCp/2024Al metal matrix composite HE Chun-lin, WANG Jian-ming, CAI Qing-kui (Department of Materials Science and Engineering, Shenyang University, Shenyang 110044, China) Abstract: The corrosion resistance of 17% SiCp/2024Al metal matrix composite (MMC) and 2024Al in 3.5% NaCl solution......
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金属基复合材料蠕变性能的研究现状和展望 李文芳1,田君1,韩立发2,彭继华1 (1.华南理工大学材料科学与工程学院,广州,510640;2.东莞理工学院机械工程学院,东莞,523808) 摘要:综述了国内外金属基复合材料的抗高温蠕变性能的研究进展.重点分析了蠕变理论研究中的3种理论模型的特点,指出理论研究的核心问题是位错越过第二的机制以及门槛应力的来源.详述了目前蠕变实验研究的各种实验方法与特点.讨论了利用计算机有限元分析来进行蠕变研究的优点.针对目前我国金属基复合材料的抗高温蠕变性能的研究方法提出了一些看法和展望. 关键词:金属基复合材料; 位错; 门槛应力; 蠕变; metal matrix composites; dislocation; threshold stress; creep; [全文内容正在添加中] ......
; 文献标志码:A Microstructure and properties of aluminum matrix composites fabricated by in-situ reaction between multi-oxide and aluminum WANG Xin-ying1, YU Hua-shun1... Co., Ltd., Qufu 273100, China) Abstract: Al2O3 particles reinforced ZL109 aluminum matrix composites were investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X......
matrix composites(MMCs) with or without rare earth Pr addition were fabricated by infiltration squeeze method. Effect of Pr addition on microstructures and fractographs of Al-Si MMCs was investigated... effectively. Compounds/intermetallics with high content of Pr are formed at the interface between short fiber and matrix. Yield strength(s0.2), ultimate tensile strength(sb) and fracture elongation of Al-Si......
Luminescence of Terbium Complexes Incorporated into Silica Matrix 游佳勇1,闫冰1 (1.Department of Chemistry, Tongji University, Shanghai 200092, China;2.State Key Laboratory of Rare Earth Materials...-phenyl-2-aminobenzoic acid and phen = 1,10-phenanthroline). These complexes were introduced into inorganic polymeric porous silica matrix by the sol-gel method. The luminescence behavior of the complexes in silica gels......