Analytic Model of Maximal Experimental Value of Stress Intensity Factor K(Q) for AA2519–AA1050–Ti6Al4V Layered Material

The article presents the results of the author’s tests involving the determination of the maximal experimental value of the stress intensity factor K(Q). This value was determined for a layered material obtained as the result of explosive welding of three alloys: AA2519, Ti6Al4V and AA1050, and separately for each material. In both cases tests were conducted for two temperatures—the ambient temperature (293 K), and cryogenic temperature (77 K). A model for initial assessment of the K(Q) value of AA2519–AA1050–Ti6Al4V (Al–Ti) layered material has also been presented. The proposed model has been developed so as to enable the determination of the curve course of load–COD for Al–Ti layered material using nominal stresses defined on the basis of a real load–COD course, obtained for the base materials, for both temperature conditions.