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Experiments are carried out for heat transfer through a contact interface of two metallic solids to clarify the effects of roughness and waviness of a contact surface on mean thermal contact conductan...ceh_m. The characteristics of an ultrasonic transmission are also investigated to obtain a relation between the mean conductance and a sound energy transmitted for flat rough surfaces. Using a proposed empirical correlation expression between h_m and a ratio of transmitted to radiated sound energy E_r,h_m can be estimated within an error of about ±50% for nominal contact pressure up to 1.67MPa.show more
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KJ00004507792