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Extending the stability limit of explicit scheme with spatial filtering for solving wave equations 期刊论文  OAI收割
JOURNAL OF COMPUTATIONAL PHYSICS, 2019, 卷号: 397, 页码: 9
作者:  
Gao, Yingjie;  Zhang, Jinhai;  Yao, Zhenxing
  |  收藏  |  浏览/下载:145/0  |  提交时间:2019/11/14
Performance test of steel tube enclosed thermistors in air temperature measurements (EI CONFERENCE) 会议论文  OAI收割
3rd International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2011, January 6, 2011 - January 7, 2011, Shanghai, China
作者:  
Yang H.;  Yan F.;  Yan F.;  Peng J.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
The performances of two steel tube enclosed precision thermistors are tested in a well controlled air environment to determine if the thermistors have enough accuracy for 0.01C levels of air temperature gradient measurement. Three Fluke's 5641 and three 5610 thermistors were tested for 24 hours in Fluke's 7008 calibration bath in the first step. In the second step  the performances of these two thermistors in steady state and transient state air temperature environments were tested for 8 hours separately. The results illustrate that  two of the 5641s were airproofed in a temperature well controlled tube  when steel tube enclosed precision thermistors are used in air temperature measurement  there are unstable departures from each other with a maximum 8.8 mC in constant air medium and 27 mC in temperature changing air medium. The transient-time errors are too large to show the true amounts of temperature changes for air temperature measurement. 2011 IEEE.  
White-light spectral scanning interferometry for surface measurement system (EI CONFERENCE) 会议论文  OAI收割
6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China
作者:  
Wang C.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
The paper introduces the white-light spectral scanning interferometry for surface measurement. This interferometry can be used to measure the roughness of both smooth surfaces and those with large step heights. This real-time surface measurement can be achieved using acousto-optic tuneable filtering (AOTF) technique without mechanical scanning. At first  the structure and principle of this interferometry is introduced. Then the algorithm of the surface roughness measurement is proposed. What's more  the experiment with standard test piece is conducted. Compared with the traditional laser-light interferometry  the data shows that the proposed method has a higher accuracy which is proved to be nano-scale. A conclusion is given at last in which the superiorities and the limitations of the proposed system were discussed. 2010 SPIE.  
Theory of large-step wavefield depth extrapolation 期刊论文  OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2006, 卷号: 49, 期号: 6, 页码: 1779-1793
作者:  
Liu Hong;  Yuan Jiang-Hua;  Chen Jing-Bo;  Shou Hao;  Li You-Ming
  |  收藏  |  浏览/下载:20/0  |  提交时间:2018/09/26
Theory of large-step wavefield depth extrapolation 期刊论文  OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2006, 卷号: 49, 期号: 6, 页码: 1779-1793
作者:  
Liu Hong;  Yuan Jiang-Hua;  Chen Jing-Bo;  Shou Hao;  Li You-Ming
  |  收藏  |  浏览/下载:24/0  |  提交时间:2018/09/26