%0 Journal Article
%T Geometry Identification of Fixed-depth Internal Heat \\[-2.5mm]Sources in Three-dimensional Test-piece Based on Surface Temperature Measurement<br>三维试件固定深度内热源几何分布识别研究
%A Cao Ming-yu
%A Fan Chun-li
%A Yang Li
%A Sun Feng-rui
%A <br>曹明宇
%A 范春利
%A 杨立
%A 孙丰瑞
%J 红外
%D 2012
%I 
%X The inverse heat conduction problem based on surface temperature measurement is not only the key theoretical basis for the quantitative development of thermographic nondestructive techniques, but also an important and difficult issue. To identify the geometry of fixed-depth internal heat sources in a three-dimensional test-piece, the three-dimensional test-piece is simplified to a one-dimensional model so that establishing the relationship between the measured temperature and the internal heat sources in one-dimensional problem. The internal heat sources obtained can be corrected by the modified one-dimensional correction method until reaching the stopping criterions thus the result identified can make the error between the calculation temperature distribution and measured temperature distribution to be minimum. Numerical test cases show that the method is effective and simple.
%K inverse heat conduction problem
%K fixed depth internal heat source
%K geometry identification
%K modified one-dimensional correction method<br>导热反问题
%K 固定深度内热源
%K 几何分布识别
%K 改进的一维修正算法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=3723000AE493FCE650601982177048B1&aid=3A1389981F843183A9C90D6BEB8274C5&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=F3090AE9B60B7ED1&sid=27746BCEEE58E9DC&eid=16D8618C6164A3ED&journal_id=1672-8785&journal_name=红外&referenced_num=0&reference_num=11