High-Velocity Projectile Impact Behaviour of Friction Stir Welded AA7075 Thick Plates

Praveen, R.; Rao, S. R. Koteswara; Selvakumar, G.; Damodaram, R.

doi:10.1016/j.dt.2023.01.019

Cited by 5 publications

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Srikanth et al [ 9 ] studied the “ballistic resistance” of “cold-metal transfer welded joints” of “AA5083”, and “AA6061 thin sheets”. Saravanakumar et al [ 10 ] studied the ballistic behaviour of underwater friction-stir welded AA5083 targets. The joint produced by hexagonal pin profile shows absence of fragmentation and less adiabatic shear band lines.…”

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

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%