INVESTIGATION OF RESIDUAL STRESS BY THE ELECTROCONTACT METHOD
Saint Petersburg National research University of Information Technology, Mechanics and Optics; Associate professor
S. A. Talnishnikh
St. Petersburg State University of Information Technologies, Mechanics and Optics, Department of Instrument-Making Technology; Post-Graduate Student
Abstract. Relation between mechanical and electric characteristics is investigated with the aim of measuring of residual stress in metals after machining of various types. Experiments are carried out with the use of the electrocontact method as well as by nondestructive etching. The possibility is shown to determine residual stress in metal samples after machining from specific electrical resistance.
Keywords: residual stress, machining, surface layer quality, nondestructive control.