Experimental determination of the dynamic fracture-initiation toughness of high-strength metals

Pérez-Martín, María Jesús; Erice, Borja; Gálvez, Francisco

doi:10.1016/j.engfracmech.2018.11.044

Cited by 13 publications

(4 citation statements)

References 29 publications

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“…The use of instrumented Charpy devices allows to obtain additional information of the mechanical response of the materials under impact, allowing the understanding of the impact phenomenon 9,15,16,28 . For instance, force versus time and force versus displacement curves can be obtained, which allows to appreciate the material behavior and its evolution during the contact of the striker 29,30 . In this context, some studies have been conducted on aluminum alloys 9,17,30,31 ; however, not enough studies in aluminum‐welded joints have been performed 12 .…”

Section: Introductionmentioning

confidence: 99%

“…For instance, force versus time and force versus displacement curves can be obtained, which allows to appreciate the material behavior and its evolution during the contact of the striker 29,30 . In this context, some studies have been conducted on aluminum alloys 9,17,30,31 ; however, not enough studies in aluminum‐welded joints have been performed 12 . For instance, Ambriz et al reported the energy absorption for the different zones of a 7075‐T651 aluminum alloy welded by gas metal arc welding (GMAW) process 15 .…”

Section: Introductionmentioning

confidence: 99%

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Impact test behavior of aluminum alloys welded joints: Experimental and numerical analysis

Martínez

Ambriz

Naït-Abdelaziz

et al. 2021

Fatigue Fract Eng Mat Struct

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The Charpy impact test behavior of base metal, weld metal, and heat‐affected zone for 6061‐T6 and 7075‐T651 aluminum alloy welds was analyzed. Force versus time curves of welded joints were obtained by means of an instrumented Charpy pendulum. An explicit finite element model was implemented to evaluate the performance of the Cowper–Symonds constitutive model. Parameters were obtained through a strain‐rate‐sensitivity analysis of base metals at high strain rates. Experimental results were compared with those computed by finite element method (FEM) by assuming the same physical and geometrical conditions of the dynamic‐experimental tests. ANSYS‐LS DYNA was used to achieve the FEM simulations. The comparison between experimental and FEM results in terms of force versus time data was evaluated. Higher accuracies were observed in Al 7075‐T651 alloy (roughly 98%). The 6061‐T6 alloy has shown an approximation of about 90%. Discrepancies are explained in terms of the effective plastic strain at fracture.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact test behavior of aluminum alloys welded joints: Experimental and numerical analysis

Martínez

Ambriz

Naït-Abdelaziz

et al. 2021

Fatigue Fract Eng Mat Struct

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“…Fracture toughness is a measurement of fracture resistance [3] and is a crucial parameter in damage tolerance design and structural integrity assessment [4,5]. Most safety-critical engineering structures including ships (see e.g., [6]) and offshore structures (see e.g., [7]) are manufactured from high (fracture) toughness materials 1 [8].…”

Section: Introductionmentioning

confidence: 99%

Prediction of fracture toughness of metallic materials

Akçay

Öterkuş

2021

Engineering with Computers

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Fracture toughness is a measurement of fracture resistance and is a crucial parameter in designing and manufacturing structural engineering components, including the components of ships and offshore structures. However, accurate measurement of fracture toughness requires a fatigue pre-cracked specimen which can be challenging to prepare in extremely brittle materials. Moreover, specimen thickness is another requirement which can be challenging to achieve as well, particularly in very tough materials. Therefore, a physics-based closed-form analytical expression is proposed to determine fracture toughness of isotropic materials simply by utilizing a uniaxial tensile test specimen. The expression naturally introduces a length scale parameter, consistent with non-local applications, such as peridynamics, as well. Fracture toughness of various metallic materials, including both brittle and ductile, are predicted and compared to the experimental results in the literature. Predicted fracture toughness values are in good agreement with the experimentally measured ones.

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“…The dynamic fracture toughness plays an important role in the engineering applications where brittle materials are used in structural elements and a dynamic event may occur during e.g. crash, explosion, blast, projectile penetration [9]. However, in the case of the dynamic toughness, e.g.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Static and Dynamic Fracture Toughness of Cured Epoxy Resins

Skoczylas¹,

Samborski²,

Kłonica³

2019

Adv. Sci. Technol. Res. J.

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The paper investigates experimental results of static and dynamic fracture toughness. The three-point bending test and the Charpy pendulum test were performed for two kinds of polymers: Epidian 5 epoxy resin cured with Z1 curing agent and Epidian 53 epoxy resin cured with Z1 curing agent. The comparison between the values of a maximum static and a maximum dynamic force are discussed as well as the values of static and dynamic fracture toughness, with special emphasis on microscopic views of crack propagation.

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Experimental determination of the dynamic fracture-initiation toughness of high-strength metals

Cited by 13 publications

References 29 publications

Impact test behavior of aluminum alloys welded joints: Experimental and numerical analysis

Impact test behavior of aluminum alloys welded joints: Experimental and numerical analysis

Prediction of fracture toughness of metallic materials

Experimental Study on Static and Dynamic Fracture Toughness of Cured Epoxy Resins

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