Tietze, Manfred; NewSonic GmbH; Germany
Tietze, M; NewSonic Gmbh; Germany
Normally Vickers Hardness Testing is dedicated to fine grained materials to characterize processing results in material treatment or assess material properties respectively. The testing conditions must be well defined for significance. The so-called UCI method (Ultrasonic Contact Impedance) uses the Vickers diamond and scale as reference and therefore has been defined similar (DIN 50159-1,2 and ASTM A1038). The norms describe restrictions and limitations for its proper use as well. Today modern sensor techniques and processing methods not only allow its use in the well-known traditional range of applications like a welding check and test of thermally cut edges accord. to DIN EN 1090-2 (HV 10 (UCI)), or testing of gearwheels, transmission systems and shafts up to measuring thin metal coatings. But there are now successful approaches in nontraditional fields for UCI like cast iron at high temperatures (HV 10 (UCI)) and testing of small, thin or cylindrical components using processing algorithms. The physical working principle of UCI will be discussed and how complicated tasks can be solved.