A spectral method for the estimation of a thermomechanical heat source from infrared temperature measurements

被引：15

作者：

Renault, N. ^{[2
]}

Andre, S. ^{[1
]}

Maillet, D. ^{[1
]}

Cunat, C. ^{[1
]}

机构：

[1] Nancy Univ, LEMTA, CNRS, F-54504 Vandoeuvre Les Nancy, France

[2] Univ Cergy Pontoise, L2MGC, F-95011 Neuville Sur Oise, France

来源：

INTERNATIONAL JOURNAL OF THERMAL SCIENCES | 2010年 / 49卷 / 08期

关键词：

Heat source; Inverse problem; Spectral methods; Quantitative thermography; Thermomechanics; CONDUCTION PROBLEMS; MODEL-REDUCTION; SOURCE-TERM; WAVELET; SPACE;

D O I：

10.1016/j.ijthermalsci.2010.03.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The inverse problem of 20 time-dependent heat source reconstruction is solved. The scientific objectives are the quantification of thermal effects associated to the mechanical deformation of materials during tensile tests. The experiment provides infrared measurements of the specimen's surface temperature and the inverse algorithm aims at providing a volumic heat source that is free of errors due to heat diffusion. This algorithm is based on an analytical solution of the direct problem in the Laplace-Fourier domain. The solution proposed here is compared to a previously used method [1] based on an adjoint formulation and a regularization of Tikhonov type. This allows to check the validity of the results. (C) 2010 Elsevier Masson SAS. All rights reserved.

引用

页码：1394 / 1406

页数：13

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