Abstract. A new approach to constructing a reference curve based on the acoustic emission phenomenon is considered. The approach uses the acoustic radiation arising from the interaction of surface roughness during friction as a source of information. Several features of the reference curve formation for materials of the both contacting bodies are considered. A comparison is made of the traditional method of reference curve formation based on processing of profilogram data with the new method based on acoustic emission data recorded under friction. Employment of reciprocal-friction method makes it possible to construct simultaneously the supporting surfaces for both bodies involved in friction. It is assumed that this method will be a help in study of friction mechanisms of various materials. It is shown that running-in of soft and hard material leads to formation of the friction surface roughness with microcontact stain of the sizes proportional to the ratio of parameters of the friction pair materials strength to the shear.

Keywords: profilogram, profile reference curve, surface, acoustic emission, shear strength

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