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Modeling of Transient Thermal Contact Resistance out of Conjugate Gradient Method
Author(s) -
ElSabbagh A.M.,
Fieberg C.,
ElMagd E.,
Kneer R.
Publication year - 2007
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.200700131
Subject(s) - conjugate gradient method , thermal contact conductance , transient (computer programming) , materials science , mechanics , heat transfer , thermal resistance , temperature gradient , heat transfer coefficient , conjugate , thermal contact , thermal , composite material , thermodynamics , mathematics , mathematical analysis , physics , computer science , meteorology , algorithm , operating system
Temperature profile at contacting pairs of any material combination is crucial in many engineering applications. A new experimental approach is suggested to estimate the contact heat transfer coefficient as well as the thermal contact resistance. This method is based on temperature infrared measurements of contact bodies and then solve the inverse problem with conjugate gradient method. Different affecting parameters are studied namely; surface roughness, presence of interlayer, applied pressure and bodies temperature difference. The time dependant heat transfer coefficients resulting from the proposed method need to be validated by a computer model. Close results are shown with slight deviation by the increase of the applied pressure and the temperature difference.