The paper presents a damage identification method of technical objects with the use of multidimensional analyses. The studied objects were rolling bearings tested on a laboratory test stand as well as vehicle wheel rims. The rims were examined by an Automated Tester. A group of variables describing the condition of the bearings included basic parameters of acceleration signal such as: RMS, peak value, functions describing the envelope of vibration spectrum and additionally the experimental coefficient of friction for the oscillatory motion. Diagnostic measurements data can be input into the proposed mathematical models and compared with a database of cases of the object technical states. Results of the multidimensional analysis of diagnostic parameters are presented in the form of diagrams (cluster trees). On this basis, the technical condition of the tested object can be easily interpreted. The proposed models supported the classification of wheel rims into groups characterized by similar frequencies and amplitude based on shock tests.
Praca zawiera wyniki badań zużycia wieńca koła: - zużycie warstwy wierzchniej w obszarze kontaktu koła z wstawką hamulcową oraz - podcięcia obrzeża w miejscu kontaktu koła z szyną. W pracy zamieszczono ogólną definicję zużycia elementów maszyn oraz, klasyfikację zużycia, ze względu na tzw. wiodące (dominujące) procesy zużycia, obserwowane w praktyce. Praca bazuje na zastosowaniu nowych technologii pomiarów zużycia kół tramwaju na monitorującym stanowisku diagnostycznym, gdzie pomiar zużycia kół dokonywany jest w trakcie ruchu pojazdu.
EN
The work contains the results of the wheel rim wear - wear in the area of the surface layer in contact with the wheel brake shoe, - undercutting periphery of the wheel at the point of contact with the rail. The work includes a general definition and the wear of machine parts, the classification of use, the reason for this. leading (dominant) wear processes observed in practice The work is based on the use of new technologies metering tram wheels on a diagnostic monitoring, where the measurement of wheel wear is made in the course of a vehicle.