机构

• 金属研究所 [4]
• 长春光学精密机械与物... [1]
• 西安光学精密机械研究... [1]

采集方式

• OAI收割 [6]

内容类型

• 期刊论文 [5]
• 会议论文 [1]

发表日期

• 2024 [1]
• 2023 [1]
• 2014 [1]
• 2012 [1]
• 2007 [1]
• 2006 [1]
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浏览/检索结果: 共6条，第1-6条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Rapid Solidification of Invar Alloy 期刊论文  OAI收割 Materials, 2024, 卷号: 17, 期号: 1 作者:  He, Hanxin;  Yao, Zhirui;  Li, Xuyang;  Xu, Junfeng   |  收藏  |  浏览/下载：50/0  |  提交时间：2024/02/26 Invar alloy  solidification  undercooling  hardness   Invar Effect in the Wide and Higher Temperature Range by Coherent Coupling in Fe-Based Alloy 期刊论文  OAI收割 ADVANCED FUNCTIONAL MATERIALS, 2023, 页码: 9 作者:  Cui, Jin;  Sun, Ying;  Shi, Kewen;  Deng, Sihao;  Ma, Tianyu   |  收藏  |  浏览/下载：13/0  |  提交时间：2024/01/08 coherent coupling  coherent nanodomains  Fe-based alloy  Invar effect   Observation of etch pits in Fe-36wt%Ni Invar alloy 期刊论文  OAI收割 International Journal of Minerals Metallurgy and Materials, 2014, 卷号: 21, 期号: 7, 页码: 682-686 D. Z. Lu; M. J. Wu 收藏  |  浏览/下载：26/0  |  提交时间：2015/01/14 Invar alloy  dislocations  etch pit technique  alloying elements  dislocation density  gan  reduction   Study on ultra-light secondary baffle for coaxial two-mirror telescope (EI CONFERENCE) 会议论文  OAI收割 2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China 作者:  Zhang L.;  Zhang L. 收藏  |  浏览/下载：62/0  |  提交时间：2013/03/25 The coaxial two-mirror telescope consists of two mirrors facing each other. Classical two-mirror arrangements are Gregorian and Cassegrain. These systems are usually applied to space telescopes and often have optical baffles to prevent stray light from entering the focal plane. The optical baffles consist of concentric rings suspended between the secondary and the primary mirror. The secondary baffle for a large two-mirror optical system is designed and analyzed in this paper. According to mission of a telescope  the structure should have high stiffness and high reliability and light weight. Compared with invar  aluminum alloy and titanium alloy  carbon fiber composite is currently the best material in terms of weight-to-strength ratio. It also has advantages of high temperature tolerance and low thermal expansion. So carbon fiber composite is chosen as material to meet requirements of the coaxial telescope. In this paper  optimization method based on finite element analysis (FEA) is used for design the secondary baffle. Minimum weight of the baffle is chosen as an objective function. Thicknesses of former tube and vanes are chosen as variables. Analysis results show that the designed secondary baffle has maximum diameter of 180mm  total length of 120mm and weighs 142g. And its fundamental frequency reaches 651Hz. Therefore the baffle has many advantages  such as ultra-light weight  high stiffness and dimensional stability  etc. The optimization method and the baffle design can be helpful to other coaxial telescopes  such as Cassegrain  Gregorian and their subdivisions. 2012 IEEE.   Phonon damping in two-dimensional Heisenberg ferromagnetic system at finite temperature 期刊论文  OAI收割 ACTA PHYSICA SINICA, 2007, 卷号: 56, 期号: 2, 页码: 1066-1074 作者:  Cheng TaiMin   |  收藏  |  浏览/下载：21/0  |  提交时间：2021/02/26 DENSITY-OF-STATES  INVAR ALLOY  LATTICE-DYNAMICS  EXCITATION  MAGNON  FE86CO4ZR10  MAGNETISM  MECHANISM  FE3PT  magnon-phonon interaction  transverse acoustic phonon damping  longitudinal acoustic phonon damping  phonon lifetime   Transverse acoustic phonon excitation of two-dimensional Heisenberg ferromagnetic system 期刊论文  OAI收割 ACTA PHYSICA SINICA, 2006, 卷号: 55, 期号: 9, 页码: 4828-4836 作者:  Cheng TaiMin;  Ze Xianyu   |  收藏  |  浏览/下载：22/0  |  提交时间：2021/02/26 DENSITY-OF-STATES  INVAR ALLOY  LATTICE-DYNAMICS  MAGNON  FE86CO4ZR10  MAGNETISM  MECHANISM  FE3PT  magnon-phonon interaction  transverse acoustic phonon softening  Matsubara Green function theory  ferromagnetic system