My next question will be, if I would like to prepare these tests (Searle Bar & Lee Disc) in my lab, in which there is no proper set-up that available, how should I go ahead with it?
Lee's disc is more for bad conductors (heat transfer coefficients don't matter much compared to the poor conductance of the disc). Searle's bar is more appropriate yet I would rather go for a comparitive measurement with a high and low temperature bath and a heat flux through the sample and a reference in series. By measuring the temperature gradient in the reference and in the sample you can deduce the thermal conductivity of the material quite acurately. I have built such an apparatus for my research so I may be able to share experience.
Excellent Dr. Ludger Weber. Thank you for sharing the informative info and thanks in advance for your willingness to share your experiences with us. Yes, I do aware of that difference (between Lee Disk vs Searle Bar method). I am planning to build such an apparatus in future and will come back to you later. Appreciate your kind support.
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