Machinery & Energetics

The article proposes an analytical approach to the development of a structural-energy model of agrotronics for combine harvesting of grain crops, based on the study of energy accumulation processes and failure formation in technical system components. The mechanism of damage initiation at the microstructural level through the absorption of active quasiparticles by sensitive microvolumes of the material is investigated, and a mathematical model describing the dependence of failure-free operation probability on energy impact and operating time is substantiated. The patterns of variation in the parameters of the structural-energy model depending on the size of material defect structures are analyzed, and the possibility of predicting the reliability and service life of components based on the results of non-destructive testing is demonstrated. The results of experimental studies confirming the significant influence of internal material defects on the service life of machine elements are presented. The proposed approach can be used to improve the accuracy of technical condition assessment, predict the remaining useful life of components, and enhance technical diagnostic systems for combine harvesters

non-destructive testing; mathematical modeling; technical condition; energy impact; technical system