The aim of this study is to present a novel inverse heat transfer method, which incorporates an automatic-filter scheme with the conjugate gradient method, for identifying shapes and temperatures of heating elements embedded in a rectangular package. In this report, shapes of the heating elements are visualized by using node-matrix images. A group of unknown heating elements with different shapes, positions, and temperatures are nondestructively identified simply based on the data of the upper surface temperature of the rectangular package. Effects of temperature measurement uncertainty, grid size, and number of measurement points on the top surface on the identification accuracy are evaluated. Results show that the geometric and thermal conditions of the embedded heating elements can be predicted precisely by using the present approach. The approach is found to be stable and insensitive to the temperature measurement uncertainty, and, without overwhelming mathematical manipulation, the form of objective function becomes flexible.
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e-mail: cheng@ttu.edu.tw
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Research Papers
Identification of Unknown Heating Elements Embedded in a Rectangular Package
Chin-Hsiang Cheng,
Chin-Hsiang Cheng
Department of Mechanical Engineering,
e-mail: cheng@ttu.edu.tw
Tatung University
, 40 Chungshan N. Road, Sec. 3, Taipei, Taiwan 10451, R.O.C.
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Mei-Hsia Chang
Mei-Hsia Chang
Department of Mechanical Engineering,
Tatung University
, 40 Chungshan N. Road, Sec. 3, Taipei, Taiwan 10451, R.O.C.
Search for other works by this author on:
Chin-Hsiang Cheng
Department of Mechanical Engineering,
Tatung University
, 40 Chungshan N. Road, Sec. 3, Taipei, Taiwan 10451, R.O.C.e-mail: cheng@ttu.edu.tw
Mei-Hsia Chang
Department of Mechanical Engineering,
Tatung University
, 40 Chungshan N. Road, Sec. 3, Taipei, Taiwan 10451, R.O.C.J. Heat Transfer. Aug 2005, 127(8): 918-930 (13 pages)
Published Online: March 15, 2005
Article history
Received:
November 20, 2003
Revised:
March 15, 2005
Citation
Cheng, C., and Chang, M. (March 15, 2005). "Identification of Unknown Heating Elements Embedded in a Rectangular Package." ASME. J. Heat Transfer. August 2005; 127(8): 918–930. https://doi.org/10.1115/1.1929782
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