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浏览/检索结果: 共11条，第1-10条 帮助

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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：49/0  |  提交时间：2024/02/26
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：12/0  |  提交时间：2024/01/08
Mechanical analysis on the influence of the bonding process on the ultra-thin mirror shell 会议论文  OAI收割
SPIE Ground-based and Airborne Telescopes VII（Vol.10700）, Austin, Texas, United States, 2018-6-10
作者:  Heng Zuo;  Kunxing Chen
  |  收藏  |  浏览/下载：37/0  |  提交时间：2019/02/03
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：25/0  |  提交时间：2015/01/14
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：60/0  |  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：20/0  |  提交时间：2021/02/26
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：21/0  |  提交时间：2021/02/26
Magnetovolume instability in compound LaFe11.5S4.5 期刊论文  OAI收割
ACTA PHYSICA SINICA, 2005, 卷号: 54, 期号: 6, 页码: 2868
Wang, GJ; Wang, F; Shen, BG
收藏  |  浏览/下载：23/0  |  提交时间：2013/09/18
INVAR  TRANSITION  MAGNETISM  BCC  DEPENDENCE  ALLOYS  IRON  SPIN  FE  NI  
非晶态Fe_（90－x）Co_xZr_（10）合金的Invar效应研究 期刊论文  OAI收割
金属学报, 1994, 期号: 15, 页码: 126-129
卢志超，鲜于泽，李际周，叶春堂，李竹起，康健,沈保根，吕曼祺
收藏  |  浏览/下载：36/0  |  提交时间：2012/04/12
非晶态Fe90—xCoxZr10合金的Invar效应研究 期刊论文  OAI收割
金属学报, 1994, 卷号: 30.0, 期号: 003, 页码: B126-B129
作者:  卢志超;  鲜于泽;  李际周;  叶春堂;  李竹起
  |  收藏  |  浏览/下载：35/0  |  提交时间：2021/02/26