| 2007 №12 (10) | 2007 №12 (02) |
The Paton Welding Journal, 2007, #12, 2-8 pages
Method for evaluation of fracture toughness of welded assemblies by combining mathematical modelling and measurements on small-section specimens
V.I. Makhnenko, E.A. Velikoivanenko, A.P. Semyonov
E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
The improved method, being an outgrowth of the B.Z. Margolin method for evaluation of fracture toughness of structural steels through a more exact modelling of deformation processes within the crack zone of a test specimen, is suggested for plotting the KIC versus temperature probability curves for specimens of embrittled steel 15Kh2NMFA, 50 mm thick, based on the results of testing 10 mm thick specimens at a temperature of -100 °C.
Keywords: fracture toughness, probability of fracture by microcleavage, Weibull distribution parameters, stresses in crack zone, characteristics of deformation of material
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