Algorithms for determination of weld toe radius and weld toe angle in welded joints

Publikation: Beitrag in FachzeitschriftÜbersichtsarbeitForschungPeer-Review

Autorschaft

  • Christian Dänekas
  • Jan Schubnell
  • Johannes Krautheimer
  • Matthias Jung
  • Elyas Ghafoori
  • Peter Schaumann

Organisationseinheiten

Externe Organisationen

  • Fraunhofer-Institut für Werkstoffmechanik (IWM), Institutsteil Freiburg
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer109112
Seitenumfang13
FachzeitschriftJournal of Constructional Steel Research
Jahrgang224
Frühes Online-Datum5 Nov. 2024
PublikationsstatusVeröffentlicht - Jan. 2025

Abstract

This paper addresses the challenge of precise determination of weld toe radius and flank angle in welded joints. Despite the importance of these parameters for fatigue strength, existing research has not provided clear computational methods for their accurate evaluation. To address this research gap, various evaluation algorithms were developed and applied to both artificially generated profiles of butt-welded and fillet-welded joints and real digital scan data of a reference specimen. The study derives initial recommendations for data quality and the selection of evaluation methods based on weld seam geometry and point spacing. These recommendations consider the demonstrated areas of validity and limitations. The results show that a least squares approach offers the greatest potential to accurately determine weld toe radii. Additionally, the flank angle can be well determined using the gradient of the weld seam profile. The results improve the understanding in assessment of weld seam geometries, enabling automated and precise weld quality inspection in the future. This study may contribute in the future derivation of normative and harmonization regulations for the determination of weld toe parameters.

ASJC Scopus Sachgebiete

Zitieren

Algorithms for determination of weld toe radius and weld toe angle in welded joints. / Dänekas, Christian; Schubnell, Jan; Krautheimer, Johannes et al.
in: Journal of Constructional Steel Research, Jahrgang 224, 109112, 01.2025.

Publikation: Beitrag in FachzeitschriftÜbersichtsarbeitForschungPeer-Review

Dänekas C, Schubnell J, Krautheimer J, Jung M, Ghafoori E, Schaumann P. Algorithms for determination of weld toe radius and weld toe angle in welded joints. Journal of Constructional Steel Research. 2025 Jan;224:109112. Epub 2024 Nov 5. doi: 10.1016/j.jcsr.2024.109112
Dänekas, Christian ; Schubnell, Jan ; Krautheimer, Johannes et al. / Algorithms for determination of weld toe radius and weld toe angle in welded joints. in: Journal of Constructional Steel Research. 2025 ; Jahrgang 224.
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abstract = "This paper addresses the challenge of precise determination of weld toe radius and flank angle in welded joints. Despite the importance of these parameters for fatigue strength, existing research has not provided clear computational methods for their accurate evaluation. To address this research gap, various evaluation algorithms were developed and applied to both artificially generated profiles of butt-welded and fillet-welded joints and real digital scan data of a reference specimen. The study derives initial recommendations for data quality and the selection of evaluation methods based on weld seam geometry and point spacing. These recommendations consider the demonstrated areas of validity and limitations. The results show that a least squares approach offers the greatest potential to accurately determine weld toe radii. Additionally, the flank angle can be well determined using the gradient of the weld seam profile. The results improve the understanding in assessment of weld seam geometries, enabling automated and precise weld quality inspection in the future. This study may contribute in the future derivation of normative and harmonization regulations for the determination of weld toe parameters.",
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TY - JOUR

T1 - Algorithms for determination of weld toe radius and weld toe angle in welded joints

AU - Dänekas, Christian

AU - Schubnell, Jan

AU - Krautheimer, Johannes

AU - Jung, Matthias

AU - Ghafoori, Elyas

AU - Schaumann, Peter

N1 - Publisher Copyright: © 2024 The Authors

PY - 2025/1

Y1 - 2025/1

N2 - This paper addresses the challenge of precise determination of weld toe radius and flank angle in welded joints. Despite the importance of these parameters for fatigue strength, existing research has not provided clear computational methods for their accurate evaluation. To address this research gap, various evaluation algorithms were developed and applied to both artificially generated profiles of butt-welded and fillet-welded joints and real digital scan data of a reference specimen. The study derives initial recommendations for data quality and the selection of evaluation methods based on weld seam geometry and point spacing. These recommendations consider the demonstrated areas of validity and limitations. The results show that a least squares approach offers the greatest potential to accurately determine weld toe radii. Additionally, the flank angle can be well determined using the gradient of the weld seam profile. The results improve the understanding in assessment of weld seam geometries, enabling automated and precise weld quality inspection in the future. This study may contribute in the future derivation of normative and harmonization regulations for the determination of weld toe parameters.

AB - This paper addresses the challenge of precise determination of weld toe radius and flank angle in welded joints. Despite the importance of these parameters for fatigue strength, existing research has not provided clear computational methods for their accurate evaluation. To address this research gap, various evaluation algorithms were developed and applied to both artificially generated profiles of butt-welded and fillet-welded joints and real digital scan data of a reference specimen. The study derives initial recommendations for data quality and the selection of evaluation methods based on weld seam geometry and point spacing. These recommendations consider the demonstrated areas of validity and limitations. The results show that a least squares approach offers the greatest potential to accurately determine weld toe radii. Additionally, the flank angle can be well determined using the gradient of the weld seam profile. The results improve the understanding in assessment of weld seam geometries, enabling automated and precise weld quality inspection in the future. This study may contribute in the future derivation of normative and harmonization regulations for the determination of weld toe parameters.

KW - 3D-surface digital scans

KW - Automatic evaluation

KW - Notch effect

KW - Optical measurements

KW - Weld toe angle

KW - Weld toe radius

KW - Welded joints

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DO - 10.1016/j.jcsr.2024.109112

M3 - Review article

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JO - Journal of Constructional Steel Research

JF - Journal of Constructional Steel Research

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