METHOD FOR DETECTION OF RESIDUAL STRESSES Russian patent published in 2009 - IPC G01L1/00 

Abstract RU 2366912 C1

FIELD: physics, measurements.

SUBSTANCE: invention is related to methods for detection of residual stresses in axisymmetric tubular products after plastic deformation. Available experimental method is used to identify tangential residual stress in surface layer of tubular product, value of which is used to detect distribution of residual stresses in the whole section of tubular product by the following formulas:

where σr, σθ, σz are accordingly radial, tangential and axial residual stresses; is value of tangential residual stress in surface layer of tubular product; R1 and R2 are accordingly external and internal radiuses of pipe; is nondimensional parametre, which characterises relative thickness of pipe wall; r is radial coordinate; µ is Poisson ratio of pipe material.

EFFECT: improved accuracy and expansion of method potential by determination of all components of residual stress tensor in the whole section of axisymmetric tubular products.

Similar patents RU2366912C1

Title Year Author Number
METHOD OF DETERMINING RESIDUAL STRESSES IN RODS AND WIRES 2009
  • Kolmogorov German Leonidovich
  • Kuznetsova Elena Vladimirovna
RU2415390C1
METHOD DETERMINING RESIDUAL STRESSES 1997
  • Kolmogorov G.L.
  • Mel'Nikova T.E.
  • Kurapova N.A.
  • Konoplev A.V.
  • Kamenev S.A.
RU2125252C1
METHOD FOR DETERMINING RESIDUAL STRESSES IN ROLLED ALUMINIUM ALLOYS 2023
  • Kargapoltsev Sergei Konstantinovich
  • Gobzenko Valerii Erofeevich
  • Bolshakov Roman Sergeevich
RU2804605C1
METHOD FOR MULTIPLE PLASTIC DEFORMATION OF AXIALLY SYMMETRIC ROD AND WIRE METALWARE 2014
  • Kolmogorov German Leonidovich
  • Kuznetsova Elena Vladimirovna
  • Khabarova Diana Vjacheslavovna
RU2580263C2
METHOD OF MANUFACTURING TUBE METALWARE BY PLASTIC DEFORMATION 2016
  • Kolmogorov German Leonidovich
  • Kuznetsova Elena Vladimirovna
  • Khabarova Diana Vyacheslavovna
RU2622552C1
METHOD FOR DEFORMATION OF AXISYMMETRICAL BILLETS 1996
  • Kolmogorov G.L.
  • Konoplev V.N.
  • Mel'Nikova T.E.
  • Ivanov V.A.
  • Kamenev S.A.
  • Shpakovskij L.K.
  • Fedotov N.A.
  • Zuev A.F.
RU2113301C1
METHOD FOR DETERMINING THE INDEX OF DEFORMABILITY OF THE MATERIAL IN THE PRODUCTION OF BAR METAL PRODUCTS 2021
  • Kuznetsova Elena Vladimirovna
  • Kolmogorov German Leonidovich
  • Melnikova Tatyana Evgenevna
RU2775810C1
METHOD OF MACHINING OF AXIALLY SYMMETRIC PARTS 2015
  • Kolmogorov German Leonidovich
  • Kuznetsova Elena Vladimirovna
  • Klimov Nikita Andreevich
RU2600608C1
METHOD OF CUTTING PROCESSING OF AXIALLY SYMMETRIC DETAILS 2017
  • Kolmogorov German Leonidovich
  • Kuznetsova Elena Vladimirovna
  • Klimov Nikita Andreevich
RU2659555C1
METHOD OF MACHINING BY CUTTING FOR AXISYMMETRIC PARTS 2020
  • Kolmogorov German Leonidovich
  • Klimov Nikita Andreevich
RU2742759C1

RU 2 366 912 C1

Authors

Kolmogorov German Leonidovich

Kuznetsova Elena Vladimirovna

Dates

2009-09-10Published

2008-03-24Filed