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Crack Size and Undermatching Effects on Fracture Behavior of a Welded Joint

Crack size and undermatching effects on fracture behavior of undermatched welded joints are presented and analyzed. Experimental and numerical analysis of the fracture behavior of high-strength low-alloyed (HSLA) steel welded joints with so-called small and large crack in undermatched weld metal and...

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Autores principales: Sedmak, Aleksandar, Doncheva, Elisaveta, Medjo, Bojan, Rakin, Marko, Milosevic, Nenad, Radu, Dorin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343383/
https://www.ncbi.nlm.nih.gov/pubmed/37445171
http://dx.doi.org/10.3390/ma16134858
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author Sedmak, Aleksandar
Doncheva, Elisaveta
Medjo, Bojan
Rakin, Marko
Milosevic, Nenad
Radu, Dorin
author_facet Sedmak, Aleksandar
Doncheva, Elisaveta
Medjo, Bojan
Rakin, Marko
Milosevic, Nenad
Radu, Dorin
author_sort Sedmak, Aleksandar
collection PubMed
description Crack size and undermatching effects on fracture behavior of undermatched welded joints are presented and analyzed. Experimental and numerical analysis of the fracture behavior of high-strength low-alloyed (HSLA) steel welded joints with so-called small and large crack in undermatched weld metal and the base metal was performed, as a part of more extensive research previously conducted. J integral was determined by direct measurement using special instrumentation including strain gauges and a CMOD measuring device. Numerical analysis was performed by 3D finite element method (FEM) with different tensile properties in BM and WM. Results of J-CMOD curves evaluation for SUMITEN SM 80P HSLA steel and its weld metal (WM) are presented and analyzed for small and large cracks in tensile panels. This paper is focused on some new numerical results and observations on crack tip fields and constraint effects of undermatching and crack size keeping in mind previously performed experiments on the full-scale prototype. In this way, a unique combined approach of experimental investigation on the full-scale proto-type and tensile panels, as well as numerical investigation on mismatching and crack size effects, is achieved.
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spelling pubmed-103433832023-07-14 Crack Size and Undermatching Effects on Fracture Behavior of a Welded Joint Sedmak, Aleksandar Doncheva, Elisaveta Medjo, Bojan Rakin, Marko Milosevic, Nenad Radu, Dorin Materials (Basel) Article Crack size and undermatching effects on fracture behavior of undermatched welded joints are presented and analyzed. Experimental and numerical analysis of the fracture behavior of high-strength low-alloyed (HSLA) steel welded joints with so-called small and large crack in undermatched weld metal and the base metal was performed, as a part of more extensive research previously conducted. J integral was determined by direct measurement using special instrumentation including strain gauges and a CMOD measuring device. Numerical analysis was performed by 3D finite element method (FEM) with different tensile properties in BM and WM. Results of J-CMOD curves evaluation for SUMITEN SM 80P HSLA steel and its weld metal (WM) are presented and analyzed for small and large cracks in tensile panels. This paper is focused on some new numerical results and observations on crack tip fields and constraint effects of undermatching and crack size keeping in mind previously performed experiments on the full-scale prototype. In this way, a unique combined approach of experimental investigation on the full-scale proto-type and tensile panels, as well as numerical investigation on mismatching and crack size effects, is achieved. MDPI 2023-07-06 /pmc/articles/PMC10343383/ /pubmed/37445171 http://dx.doi.org/10.3390/ma16134858 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sedmak, Aleksandar
Doncheva, Elisaveta
Medjo, Bojan
Rakin, Marko
Milosevic, Nenad
Radu, Dorin
Crack Size and Undermatching Effects on Fracture Behavior of a Welded Joint
title Crack Size and Undermatching Effects on Fracture Behavior of a Welded Joint
title_full Crack Size and Undermatching Effects on Fracture Behavior of a Welded Joint
title_fullStr Crack Size and Undermatching Effects on Fracture Behavior of a Welded Joint
title_full_unstemmed Crack Size and Undermatching Effects on Fracture Behavior of a Welded Joint
title_short Crack Size and Undermatching Effects on Fracture Behavior of a Welded Joint
title_sort crack size and undermatching effects on fracture behavior of a welded joint
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343383/
https://www.ncbi.nlm.nih.gov/pubmed/37445171
http://dx.doi.org/10.3390/ma16134858
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