Calculation-experimental procedure for determining welding deformations and stresses based on a digital image correlation method

Authors

DOI:

https://doi.org/10.15587/1729-4061.2022.265767

Keywords:

stressed-strained state, non-destructive testing, digital correlation of images (DIC), laser welding

Abstract

The object of this study is determining the stressed-strained state (SSS) of a welded article by applying quantitative non-destructive testing. The relevance of the study is associated with the need to devise a universal methodology for the non-destructive quantification of SSS using the simplest approaches and means of provision. To solve this task, an estimation-experimental procedure has been developed. This procedure is based on comparing digital stereo images of the individual sections (spatial primitives) of an article before and after its welding, followed by computer processing. To validate the developed procedure, the SSS of a cylindrical article made of aluminum alloy 7005, at the end of which two flanges were welded laserly with ring seams, was determined. It was established that after performing four diametrically opposed point tacks, the residual deformations of the ends of the article can reach 0.02–0.05 mm, and after performing continuous ring seams – to decrease to 0.01–0.02 mm. The calculation showed that the residual deformations of the end of the article after welding a ring seam are at the level of 0.02 mm, and the residual stresses in the same zone – in the range of 50–60 MPa. The deviation in the coincidence of residual deformations is in the range of 10–20 %, which is a satisfactory result and can be considered as an error in the results of determining SSS in general. Based on the developed methodology for determining SSS, an experimental industrial complex has been created that allows TIG and PAW to perform welding of objects from steels and alloys with the ability to determine the resulting stressed-strained state of these objects. The procedure devised and the equipment designed can be used for to non-destructively determine SSS of spatial structures made of steels and alloys

Author Biographies

Volodymyr Korzhyk, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine

Doctor of Technical Sciences, Head of Department, Corresponding Member of the National Academy of Sciences of Ukraine

Department of Electrothermal Processing Material

Vladyslav Khaskin, Guangdong Welding Institute (E.O. Paton Chinese-Ukrainian Institute of Welding)

Doctor of Technical Sciences, Leading Researcher

Viktor Savitsky, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine

PhD, Senior Researcher

Department of Optimizing of Advanced Welded Structures

Illia Klochkov, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine

PhD, Leading Researcher

Department of Strength of Welded Structures

Viktor Kvasnytskyi, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Doctor of Technical Sciences, Professor

Department of Welding Technology

Andrii Perepichay, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

PhD, Senior Lecturer

Department of Welding Technology

Sviatoslav Peleshenko, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Postgraduate Student

Department of Welding Technology

Andriy Grinyuk, The E. O. Paton Research Institute of Welding Technologies in Zhejiang Province (China)

PhD, Researcher

Andrii Aloshyn, Guangdong Welding Institute (E.O. Paton Chinese-Ukrainian Institute of Welding)

Researcher

Oleksii Shutkevych, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine

Postgraduate Student, Engineer of the First Category

Department of Optimizing of Advanced Welded Structures

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Calculation-experimental procedure for determining welding deformations and stresses based on a digital image correlation method

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Published

2022-10-30

How to Cite

Korzhyk, V., Khaskin, V., Savitsky, V., Klochkov, I., Kvasnytskyi, V., Perepichay, A., Peleshenko, S., Grinyuk, A., Aloshyn, A., & Shutkevych, O. (2022). Calculation-experimental procedure for determining welding deformations and stresses based on a digital image correlation method. Eastern-European Journal of Enterprise Technologies, 5(1 (119), 44–52. https://doi.org/10.15587/1729-4061.2022.265767

Issue

Vol. 5 No. 1 (119) (2022): Engineering technological systems

Section

Engineering technological systems

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Copyright (c) 2022 Volodymyr Korzhyk, Vladyslav Khaskin, Viktor Savitsky, Illia Klochkov, Viktor Kvasnytskyi, Andrii Perepichay, Sviatoslav Peleshenko, Andriy Grinyuk, Andrii Aloshyn, Oleksii Shutkevych

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