Abstract
Apart from safety, one of the most important aspects governing industrial processes is the economy of performance. Demands for higher efficiencies and the use of higher power densities and temperatures require more and more detailed information on the design parameters associated with the prediction of performance. Invariably, such parameters can only be arrived at experimentally. This is due to the nature and complexity of modern technological systems, as a result of the number of variables involved. One such aspect which is becoming increasingly important is the effect of thermal distortion when thermal energy transfer takes place between one solid conducting medium and another. This paper is concerned with various experimental techniques which have been developed to analyse surfaces, and the prediction and measurement of thermal contact resistance when a heat flux is present. The paper then discusses a technique which may be applied to determine the effects of interfacial distortion on bolted joint systems. This is by way of an iterative process employing finite elements and experimentally determined boundary conditions.
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