Croatian Society of Non-Destructive Testing (CrSNDT)
Abstract
The stress level estimation is an important problem in the field on NDT. The paper presents some results from application of ultrasonic and magnetic noise methods for stress assessment in the laboratory"Mechanics, Diagnostics and NDT" in the Institute of mechanics-Bulgarian Academy of Sciences. The paper reports on stated investigation in bolts, rolled carbon steels, assembling dies instruments and pressed joints as well some investigation of the pressing process of the powder metallurgical materials. The results are discussed about reliability and possibilities of its industrial application
