Experimental ballistic performance determination of friction stir welded magnesium (AZ31B) targets

Kumar, S. Dharani; Suresh, S.

doi:10.1080/15397734.2020.1766491

Cited by 7 publications

(4 citation statements)

References 39 publications

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“…The friction Stir welded, rolled, and cast AZ31B Mg alloy has somewhat better ballistic performance than the base material (BM) [ 14 , 15 ]. Ballistic performance of FSW welded aluminum alloy was better compare to the GMAW [ 16 ]. Cho et al [ 16 ] found a similar type of study in the friction stir welded AA7XXX series aluminium-alloy.…”

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of experimental and numerical investigation on multiple projectile impact of AA5083 friction stir welded targets

Balaji¹,

Kumar²,

Magarajan³

et al. 2023

PLoS ONE

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This research aims to investigate the ballistic resistance of base material (BM)and “Friction Stir Welded (FSW)”, AA5083 aluminum alloy. The primary objective was to build a finite element model to predict kinetic energy absorption and target deformation under single and multiple projectile impact conditions. This study employed 7.62mm Hard Steel Core (HSC) projectiles produced from Steel 4340. The target was analyzed using commercially available Abaqus Explicit software for Finite Element Analysis. It was noticed that the generation of kinetic energy and surface residual velocity increases as the number of projectile strikes increases. In addition, the experimental ballistic test was conducted to validate the numerical results. Using the analytical Recht-Ipson model, each target’s experimental residual velocity was determined. It was determined that weldments perform less well (30%) as compared to BM targets. Occurrence of plastic deformation during welding causes reduction in ballistic performance of weldments. For both the computational and experimental approaches, a correlation between residual velocities was found. The plastic deformations with ductile hole formation were observed in all the cases.

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Section: Introductionmentioning

confidence: 99%

“…Ballistic performance of FSW welded aluminum alloy was better compare to the GMAW [ 16 ]. Cho et al [ 16 ] found a similar type of study in the friction stir welded AA7XXX series aluminium-alloy. However, they evaluated the V 50 of the welded and heat-affected regions by using indentation testing methods.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of experimental and numerical investigation on multiple projectile impact of AA5083 friction stir welded targets

Balaji¹,

Kumar²,

Magarajan³

et al. 2023

PLoS ONE

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“…AA7075-T651) was spalling, which was followed by the growth of adiabatic shear bands. Dharani Kumar et al 19 investigated the impact resistance of magnesium (AZ31B) target plates using a 7.62 mm APP and found that post-weld heat treated joints had no fragmentation failure, fewer cracks and ASB lines, resulting in enhanced impact resistance.…”

Section: Introductionmentioning

confidence: 99%

“…So far, the literature has dealt with a variety of numerical and experimental ballistic studies on composite materials, surface modifications, reinforcement of metal matrix composites, different kinds of projectiles and their shapes, optimized ballistic limit velocities, and friction stir process plates. 1–10,12–25 Furthermore, there are numerous reports in the literature on the high-velocity impact of various Al alloys; a comprehensive study on the projectile's penetration behaviour in single layered rolled condition plates of various thicknesses and heat treatments are needed. As a result, the specified condition of heat treatment and optimized target thickness necessary to prevent complete penetration can be chosen.…”

Section: Introductionmentioning

confidence: 99%

Optimization of target thickness and investigation on the effect of heat treatment on the ballistic performance of aluminium alloy 7075 targets against hard steel core projectile

Praveen

Rao

Kumar

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Optimization of target thickness and influence of heat treatment condition on the high velocity impact response of aluminium alloy 7075 targets have been determined. Both experimental and numerical studies were conducted using a 7.62 mm hard steel core projectile. The numerical simulation used a 7.62 mm Ogival nose shaped projectile with a target thickness ranging from 20 to 26 mm. High velocity impact experiments on T651 and solution treated targets, with rolled plate thicknesses ranging from 21 to 25 mm were carried out to validate the numerical findings. The microhardness of the targets was measured using Vicker's microhardness tester and fractographs were examined using a scanning electron microscope. The projectile penetrated regions were analyzed using light microscopy. A good correlation between the numerical and experimental ballistic behaviour of aluminium alloy 7075 targets was observed and an optimum target thickness of 21 and 24 mm was observed for the T651 and solution treated targets to prevent the projectile's penetration. It was also noted that, after the projectile's impact, solution treated targets had higher microhardness compared to T651 condition targets. This is due to higher work hardening of solution treated targets near the penetration channel. Even though T651 targets have a lower depth of penetration compared to solution treated targets, ‘splintering’ failure of the T651 targets is observed. In contrast, ‘petalling’ and ‘plugging’ kinds of failures were noticed on the solution treated targets. Thus, solution treatment of ballistic targets may enhance the ballistic limit of armoured vehicles.

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Effect of Shot Peening on the Ballistic Performance of Friction Stir Welded Magnesium Alloy (AZ31B) Joints

Kumar

2022

J. of Materi Eng and Perform

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Experimental ballistic performance determination of friction stir welded magnesium (AZ31B) targets

Cited by 7 publications

References 39 publications

Comparative analysis of experimental and numerical investigation on multiple projectile impact of AA5083 friction stir welded targets

Comparative analysis of experimental and numerical investigation on multiple projectile impact of AA5083 friction stir welded targets

Optimization of target thickness and investigation on the effect of heat treatment on the ballistic performance of aluminium alloy 7075 targets against hard steel core projectile

Effect of Shot Peening on the Ballistic Performance of Friction Stir Welded Magnesium Alloy (AZ31B) Joints

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