Experimental notched fracture resistance study for the interface of Al–Cu bimetal joints welded by friction stir welding

Aliha, M.R.M.; Fotouhi, Yassin; Berto, Filippo

doi:10.1177/0954405416688935

Cited by 22 publications

(11 citation statements)

References 48 publications

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“…It seems that low heat input in FSW joint area and absence of filling material help properties of joint area near base material. 1–3 For these reasons, industrial and academic groups have produced modern polymeric structures with FSW process. 4–6 In this process, frictional heat is generated by tool shoulder and pin causing material change into plastic phase.…”

Section: Friction Stir Welding Tool Plunge Depth Tool Tilt Angle Mmentioning

confidence: 99%

Study on the effects of tool tile angle, offset and plunge depth on friction stir welding of poly(methyl methacrylate) T-joint

Eyvazian

Derazkola

Elyasi

2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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The effects of tilt angle (TTA), plunge depth (TPD) and offset (TO) of tool in friction stir welding of poly(methyl methacrylate) T-joint were investigated. To understand better the effects of process parameter, thermomechanical simulation of joint was assessed. The results seem to show that at higher TPD and TTA, frictional heat increases. Woven tissue structure joint line forms after friction stir welding of poly(methyl methacrylate) sheets. The distance of woven layers was affected by TPD and TTA, while TO do not significantly affect heat generation of joint. The best material flow and adequate heat are generated at 0 mm TA, 2° TTA and 0.2 mm TPD, respectively. The highest flexural and tensile strength of friction stir welded joint were approximately 93% and 90% of as-received poly(methyl methacrylate), respectively. Crack forking was detected on the fractured surface of flexural samples and crack path was detected in the vicinity of shrinkage holes at fracture surface of tensile samples. These holes and degradation of poly(methyl methacrylate) during friction stir welding process decrease strength and hardness of the joint.

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Section: Friction Stir Welding Tool Plunge Depth Tool Tilt Angle Mmentioning

confidence: 99%

Study on the effects of tool tile angle, offset and plunge depth on friction stir welding of poly(methyl methacrylate) T-joint

Eyvazian

Derazkola

Elyasi

2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…In other words, this movement can be analyzed using an interfacial fracture model. The process of crack initiation and propagation at the interface of two dissimilar materials (He & Hutchinson, 1989;Hurd et al, 1995;Martin et al, 2001;Evans et al, 1990;Ayatollahi et al, 2010a;Mirsayar, 2014a;Campilho et al, 2011;Álvarez et al, 2014; and in different engineering materials (Arabi et al,74 2013; Ayatollahi et al, 2010bAyatollahi et al, , 2013Mirsayar, 2013Mirsayar, , 2014bMirsayar, ,c, 2015aMirsayar, ,b, 2017Mousavi & Aliha 2016;Mohammad Aliha et al 2017;Mirsayar et al, , 2017aMirsayar & Park, 2015Mirsayar & Takabi, 2016;Razmi & Mirsayar, 2017) has widely been studied in the past. Depending on the bond strength, the mechanism of interfacial crack propagation can be classified into two types: strong interfaces, and weak interfaces.…”

Section: Fracture Criteria For Bonded Structuresmentioning

confidence: 99%

Factors influencing stresses and movements in continuously reinforced concrete pavements – A review

Mirsayar¹,

Zollinger²

2018

10.5267/j.esm

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The use of cement concrete as a stronger and more durable material than asphalt concrete in construction of the pavements has been increased during the past decades. This review paper investigates the effect of various input variables for the design of continuously reinforced concrete pavements. A literature review is prepared based on the efforts performed by many researchers to investigate the effect of different factors including temperature change, shrinkage, material properties of the concrete, and concrete slab/ subbase bond properties on the displacements and stresses in the concrete slab. It is found that the important role of concrete slab/ subbase bond strength has not been investigated properly as compared to other input variables.

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“…However, at the authors' best knowledge, there are no test results and data for investigating the fracture toughness and crack growth resistance of aluminium cylinders manufactured by the orbital FSW method probably due to lack of a suitable testing specimen and procedure for conducting the fracture experiments on curved and cylindrical geometries. The only investigations reported in the literature for crack growth and fracture toughness study of FSW parts are limited to flat plate FSW joints using different test specimens 34–40 …”

Section: Introductionmentioning

confidence: 99%

Mechanical and fracture properties of aluminium cylinders manufactured by orbital friction stir welding

Aliha

Ghoreishi

Imani

et al. 2020

Fatigue Fract Eng Mat Struct

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Butt welding of AA6063 aluminium cylindrical shells was performed using the orbital friction stir welding (FSW) method. Tool rotation speed and orbital speed (i.e., traverse speed of rotating cylinder during welding) were considered as variable, and the strength and the mechanical properties including tensile strength, microhardness, mode I fracture energy and mode I crack growth behaviour of manufactured cylinders were investigated experimentally. A novel and subsized test specimen was designed and manufactured for fracture testing of specimens extracted from both base metal and weld zone region of cylinders. The initial precrack was introduced along (i) the tool penetration through the pipe thickness (i.e., T-direction) and (ii) along the tool travelling direction (i.e., L-direction). It was found that the crack growth resistance and fracture energy values of FSW samples are greater than the corresponding values of base aluminium material along both "L"and "T"-directions. Also, the fracture resistance value in T-direction was higher than the L-direction for the whole tested FSW samples with different welding speeds. K E Y W O R D Scylinder butt joining, mechanical and microstructure properties, novel mode I fracture test specimen, orbital FSW, welding speeds

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Experimental notched fracture resistance study for the interface of Al–Cu bimetal joints welded by friction stir welding

Cited by 22 publications

References 48 publications

Study on the effects of tool tile angle, offset and plunge depth on friction stir welding of poly(methyl methacrylate) T-joint

Study on the effects of tool tile angle, offset and plunge depth on friction stir welding of poly(methyl methacrylate) T-joint

Factors influencing stresses and movements in continuously reinforced concrete pavements – A review

Mechanical and fracture properties of aluminium cylinders manufactured by orbital friction stir welding

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