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Information × Registration Number 0216U005206, 0113U003481 , R & D reports Title To develop tehnology and equipment for rapid non-destructive determination of residual stresses in welded structures by applying the local a current pulse and electronic speckle interferometry popup.stage_title Head Lobanov Leonid Mikhajlovich, Доктор технічних наук Registration Date 20-01-2016 Organization E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine popup.description2 Effect of hydrodynamic processing (EDI) on the reduction of the residual welding stresses in welded joints of magnesium alloy ML10 was studied. As of the samples used fragments of the shell intermediate body aircraft engine D-36 containing repair welds. It was found that the EDC helps to reduce the level of residual welding stresses from 120 to -40 MPa, ensuring their transition from tensile to compressive. It is shown that the local plastic deformation, using EDI samples stringer wing aircraft aluminum alloy D16 in the area of ??technological holes increases resistance to delayed fracture in 1.6-2.5 times. With the use of electronic speckle - interferometry on samples of steel St20 with a known distribution of residual stress to study the effect of the current pulse parameters local movements on the value of points on the surface in the vicinity of the introduction of the pulse. The set parameters of the current pulse that lead to the emergence of such displacement surface of the object, which are comparable with the movement of drilling blind bore diameter of 2 mm and a depth of 0.4 to 1 mm. The results allow to qualitatively determine the level of residual stresses in steels with a complex system of doping and high hardness, where drilling is not possible Product Description popup.authors Киянець Ірина Владиславівна Кротенко Петро Дмитрович Міходуй Ольга Леонідівна Півторак В"ячеслав АВтономович Пащин Микола Олександрович Шиян Костянимн Володимирович popup.nrat_date 2020-04-02 Close