Abstract: In order to calculate the service life as precisely and reliably as possible we need good mathematical models for describing loading, geometry, properties of materials and fracture mechanics parameters. It can be established whether a mathematical model is precise and reliable only by comparison of results of the method such as analytical methods in case of simple problems and experiment when real complex structure are deal with. Since gears and gearing belong to the second group, by correctly selected and developed test pieces and carefully planned experiments we obtained results with which we confirmed and justified the mathematical model for calculating mentioned parameters. To this end we will show in this paper series of experimental methods and test pieces used on the gears.Keywords: machine elements, gears, mathematical models, testing, experimental methods, numerical analysesPublished in DKUM: 07.06.2012; Views: 1642; Downloads: 67 Link to full text
Keywords: statistics, statistical methods, commercial business, economy, probability, distributions, sampling, analysis of variance, experimental design, regression analysis, forecasting, analysisPublished in DKUM: 06.06.2012; Views: 1650; Downloads: 39 Link to full text
Abstract: To confirm mathematical models for the determination of service life of gears we developed different nonstandard test pieces and used a combination of mixed experimental methods on them. The aim of these combinations was to obtain as complete information as possible about the individual influences and to detrmine the interaction between different fracture mechanics magnitudes. In this way we confirmed the models as a whole and also determined some physical interpretations in models. With this we were able to ensure that the presented model is not purely a mathematical model.Keywords: machine elements, gears, service life, testing, experimental methodsPublished in DKUM: 01.06.2012; Views: 1984; Downloads: 118 Link to full text
