engleski

The development of expert system for selecting of surface modification treatment

In solving the wear problems two ways are possible: the choice of wear resistance through the whole cross section, or application of the wear resistance surface layers. The data, information and knowledge needed for decision making are mostly qualitative and come from experts and from exploatation of the tribological systems. Knowledge bases are the basic modules in the development of the expert system for solving the tribological problems. The concept represented in this paper contains the following knowledge bases, related to the particular surface modification treatments: technical characteristics of the treatment - the description, achievable properties ; properties of the base materials (substrats) ; commercial characteristics of the treatment – investment and labour cost, manufacturers and users of the equipment ; properties of the treated parts ; description and photos of the worn-out parts which are surface treated ; standards for determination of the layer depth and methods for testing the wear resistance ; microstructures of the surface layers. The described surface modification treatments come from the following groups: treatments with martensitic transformation, treatments with the modification of the surface chemical composition, thermal spraying, PVD and CVD, weld hard facing, laser modification (melting). With the use of hypertext, frames and rules, browsing, searching and linking between particular modules of the system are enabled.

surface modification treatment; selection of treatment; expert systems

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