Welded joints geometry testing by means of automated structured light scanning

Authors

DOI:

https://doi.org/10.15587/1729-4061.2018.145713

Keywords:

3D-reconstruction, visual testing, structured light, industrial robot calibration, welding misalignment

Abstract

Nuclear industry in Russia plays an important role in total power generation. At the same time, it is considered to be dangerous in terms of high potential risk in a case of any failure occurrence. Therefore, constant monitoring and quality control is essential on every stage of energy production process, as well as maintenance of the technical quality of the exploited components. For that reason, specified regulatory documents are developed. They provide quality requirements for each component type and regulate inspection procedures. In this paper, welded joints were considered as the controlled object. It is represented that standard quality control methods based on the manual visual inspection are not accurate enough. Therefore, this paper suggests an advanced method of automated optical scanning for misalignment evaluation of welded parts based on structural light technique. Precision improvement was achieved by implementation of a robotic manipulator, which led to the development of the specific calibration technique. Considering that there are no established methodologies for such method the validation experiments were performed. The ability to detect the minimum displacement in accordance with nuclear industry regulatory documents was studied. The results demonstrated that misalignment of 0.47 mm can be measured, and it proves that proposed method can be further implemented for a practical application in nuclear industry

Author Biographies

German Filippov, National Research Tomsk Polytechnic University Lenin ave., 30, Tomsk, Russia, 634050

Engineer

Tomsk Open Laboratory for Material Inspection

Dmitry Sednev, National Research Tomsk Polytechnic University Lenin ave., 30, Tomsk, Russia, 634050

PhD, Head of Laboratory

Tomsk Open Laboratory for Material Inspection

Yana Salchak, National Research Tomsk Polytechnic University Lenin ave., 30, Tomsk, Russia, 634050

Junior Researcher

Tomsk Open Laboratory for Material Inspection

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Published

2018-10-26

How to Cite

Filippov, G., Sednev, D., & Salchak, Y. (2018). Welded joints geometry testing by means of automated structured light scanning. Eastern-European Journal of Enterprise Technologies, 5(5 (95), 53–60. https://doi.org/10.15587/1729-4061.2018.145713

Issue

Vol. 5 No. 5 (95) (2018): Applied physics

Section

Applied physics

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Copyright (c) 2018 German Filippov, Dmitry Sednev, Yana Salchak

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