Operation Reliability and Diagnostics of Mechanical Systems via RDISApplication

摘要

This paper deals with the use of an information system for the reliability and diagnostics ofrncomplex mechanical systems. It includes a theoretical analysis of relations and interconnection of failuresrnof these systems, providing thus simple but sufficient data (type, rate, failure time distribution andrnoperating mode). It deals in more detail with a correlation of simultaneous failures with the use of arnmultinonic model. The basic theory is reflected in an example, in which failure of plain bearings in a smallrnset of internal combustion engines (2 sets consisting of 7 engines in a laboratory and in routine operation)rnwere studied and 11 fatigue mechanisms (adhesion, abrasion, erosion, fatigue, vibration, cavitation, mix ofrnthe above-mentioned mechanisms, peeling off bearing surface layers, corrosion, change of geometricrnshape and production, technology and assembly inaccuracies) where 35 basic diagnostic features ofrnfailures were discovered. Correlation analysis provided to find important relations between the features ofrnfailures (in total, 4 important features in relation to the number of hours worked) and to use them as basicrndiagnostic parameters in operation.