Method of machines diagnosing in emergency overloading states (in Polish) Metoda diagnozowania maszyn w stanach przeciążeń awaryjnych

The monograph deals with the diagnostic method assisting the operation in order to avoid the emergency overload of machines. The states that precede the failure generated by sudden, random and vehement mechanical loading impacts are considered. In the study, two periods in which it is possible to conduct the identification of technical state were distinguished. The first one is the state of failure risk that starts after the external impact occurrence, and the second one is the period that precedes an emergency. The main part in diagnosing the state of the machine has the diagnoser. Diagnosing in the emergency state undergoes by conducting the numerical simulation on the model of the object subjected to diagnosis, whose run is being corrected by the measurements on real object. Tuning the diagnoserʹs model state to diagnosed object according to the authors method occurs in all diagnosing cycle and then the calculations are continued in order to identify the technical state. Diagnosing in the time before the emergency state may progress according to the random symptoms that occur in the case of mining rocks by the bucket wheel excavators. The criterial parameters of the method that provided the selection of loadings boundary value for diagnoser were indicated as well as the way of their determination based on the periodic measurements.