Estimation of C* Integral for Mismatched Welded Compact Tension Specimen

Katinić, Marko; Turk, Dorian; Konjatić, Pejo; Kozak, Dražan

doi:10.3390/ma14247491

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…Such numerical representation is developed based on the SENB specimen, notch and crack modelling approaches, previously established by Starčevič et al [8] and Štefane et al [15]. As the reference indicates, the authors also used other approaches of numerical modelling SENB specimens and corresponding cracks, carried out by various researchers, described in the available literature [38][39][40][41][42]. All of the numerical simulations are carried out in Simulia Abaqus (2016, Dassault Systemes Simulia Corp., Johnston, RI, USA) finite element method software [43], using the explicit solver.…”

Section: Test Specimen Numerical Modelsmentioning

confidence: 99%

Experimental and Numerical Analysis of Fracture Mechanics Behavior of Heterogeneous Zones in S690QL1 Grade High Strength Steel (HSS) Welded Joint

Tomerlin,

Kozak,

Ferlič

et al. 2023

Materials

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The heterogeneity of welded joints’ microstructure affects their mechanical properties, which can vary significantly in relation to specific weld zones. Given the dimensional limitations of the available test volumes of such material zones, the determination of mechanical properties presents a certain challenge. The paper investigates X welded joint of S690QL1 grade high strength steel (HSS), welded with slightly overmatching filler metal. The experimental work is focused on tensile testing to obtain stress-strain properties, as well as fracture mechanics testing. Considering the aforementioned limitations of the material test volume, tensile testing is carried out with mini tensile specimens (MTS), determining stress-strain curves for each characteristic weld zone. Fracture mechanical testing is carried out to determine the fracture toughness using the characteristic parameters. The experimental investigation is carried out using the single edge notch bend (SENB) specimens located in several characteristic welded joint zones: base metal (BM), heat affected zone (HAZ), and weld metal (WM). Fractographic analysis provides deeper insight into crack behavior in relation to specific weld zones. The numerical simulations are carried out in order to describe the fracture behavior of SENB specimens. Damage initiation and evolution is simulated using the ductile damage material behavior. This paper demonstrates the possibility of experimental and numerical determination of fracture mechanics behavior of characteristic heterogeneous welded joint zones and their influence on crack path growth.

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Section: Test Specimen Numerical Modelsmentioning

confidence: 99%

Experimental and Numerical Analysis of Fracture Mechanics Behavior of Heterogeneous Zones in S690QL1 Grade High Strength Steel (HSS) Welded Joint

Tomerlin,

Kozak,

Ferlič

et al. 2023

Materials

Self Cite

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“…In previous works [4,6,8,49], a finite element analysis methodology has been developed to study the characteristic parameters of mode I fracture and fatigue problems with specimens with a two-dimensional theoretical behavior, such as aluminum compact tensile (CT) specimens. Mesh density strategies were established for the area surrounding the crack front and for the thickness, the plastic regions, the influence of the plastic wake on the crack closure, and its relationships with the stress intensity factor.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Plastic Zone at the Crack Front in Cylindrical Aluminum Specimens Subjected to Tensile Loads

Abatta-Jacome,

Lima-Rodriguez,

Gonzalez-Herrera

et al. 2023

Materials

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Cylindrical specimens are of great interest in analyzing mechanical elements’ behavior and investigating phenomena with biaxial loads. It is necessary to identify the behavior of the crack front along the thickness to interpret these results, which are usually based on the hypothesis of a straight crack and the observation of the outer face of the crack front. Based on the work carried out on compact tension type specimens, this work proposes adapting this methodology to cylindrical specimens, adapting the previous finite element models. Cylindrical specimens provide an asymmetric behavior influenced by the radius, where the CT (compact tensile) specimen can be considered the extreme infinite radius case. Combinations of the load level and radius values help us simulate the crack’s behavior under intermediate hypotheses between a plane crack theory and a three-dimensional one. The plastic strain around the crack front will be analyzed as a function of the thickness and the load level applied. The results allow us to validate the numerical methodology and establish the differentiated behaviors of the plastic zones close to the outer and inner radii.

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Estimation of C* Integral for Mismatched Welded Compact Tension Specimen

Cited by 2 publications

References 21 publications

Experimental and Numerical Analysis of Fracture Mechanics Behavior of Heterogeneous Zones in S690QL1 Grade High Strength Steel (HSS) Welded Joint

Experimental and Numerical Analysis of Fracture Mechanics Behavior of Heterogeneous Zones in S690QL1 Grade High Strength Steel (HSS) Welded Joint

Numerical Study of the Plastic Zone at the Crack Front in Cylindrical Aluminum Specimens Subjected to Tensile Loads

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