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微细电火花热作用机理及工件表面形貌研究
学位论文
2016, 2015
王春梅
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  |  
浏览/下载:3/0
  |  
提交时间:2017/06/20
微细电火花
热源模型
热作用机理
重铸层
表面形貌。
micro-EDM, Heat source model, the thermal effect mechanism, recast layer, Surface morphology
Finite element analysis of thermal effect on large thick titanium alloy electron beam welding with different focus
会议论文
Melbourne, VIC, Australia, January 15, 2012 - January 16, 2012
作者:
Zhang, Binggang
;
Chen, Guoqing
;
Guo, Wei
;
Shi, Mingxiao
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浏览/下载:0/0
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提交时间:2020/11/15
Computer simulation
Electron beam welding
Finite element method
Mechanical engineering
Morphology
Thermal gradients
Thermocouples
Titanium alloys
Cross-section morphology
Finite element models
Gaussian surface
Heat source models
Heat sources
Molten pool
Peak temperatures
Simulated results
Surface temperatures
TA15 titanium alloy
Temperature field
Temperature gradient
Thermal cycle curve
Weld morphology
Thermal model for laser-induced discharge surface strengthening
期刊论文
Surface Review and Letters, 2011, 卷号: 18, 期号: 6, 页码: 289-296
作者:
Zhou ZQ(周终强)
;
Wang ZT(王之桐)
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  |  
浏览/下载:26/0
  |  
提交时间:2013/02/28
Laser-induced discharge
surface strengthening
thermal model
heat source
Developing of in-suit long trance profiler for testing slope error of aspherical optical Elements (EI CONFERENCE)
会议论文
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
Zhou C.
;
Li H.
;
Chen C.
;
Zhou C.
;
Qian S.
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浏览/下载:25/0
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提交时间:2013/03/25
Profile error of super smooth surface of optical elements at X-ray/EUV in synchrotron radiation (SR) light beam line is described as slope error of them generally. The Long Trace Profiler (LPT) is used for testing surface slope error of SR optical elements in world generally. It is requisite to use In-suit LTP measuring surface thermal distortion of SR optical elements with high heat under high bright SR source. Authors design an In-suit LTP by means of co-path interferometer with pencil light beam. The instrument not only can be used for testing slope error of mirrors in Lab. also in situation test the distortion of mirror with high heat load at synchrotron light beam line. The device can be used to test various absolute surface figures of optical elements such as aspherieal
spherical and plane. It is needless standard reference surface. It is named by LTP-III. This paper describes its basic operating principle
optical system
mechanical constructions
DC serve motor control system
array detector
data acquisition system and computer system for controlling and data analysis of LTP-III. The Instrument has advantages of high accuracy
low cost
multifunction and wide application. Length of surface measured of optical element accuracy is 0.04 arcsec.
STUDY ON CLIMATIC FEATURES OF SURFACE TURBULENT HEAT EXCHANGE COEFFICIENTS AND SURFACE THERMAL SOURCES OVER THE QINGHAI-XIZANG PLATEAU
期刊论文
Acta Meteorologica Sinica, 2000
赵平
;
陈隆勋
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浏览/下载:2/0
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提交时间:2017/12/03
Qinghai-Xizang(Tibetan)Plateau
surface turbulent heat exchange coefficient
surface thermal source
climatic feature
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