Browsing by Author "Meco, Sonia"

Browsing by Author "Meco, Sonia"

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  • Application pf pulsed laser for non-contact machining of aluminium alloys. 
    Banat, Dominik (Cranfield UniversitySATM, 2019-02)
    This study is directed at developing a micro-scale laser scoring process and understanding the laser-material interaction in ultra-thin aluminium foils. The research is carried out using the latest generation of high ...
  • Comparison of continuous and pulsed wave lasers in keyhole welding of stainless‑steel to aluminium 
    Coroado, Julio; Ganguly, Supriyo; Williams, Stewart; Suder, Wojciech; Meco, Sonia; Pardal, Goncalo (Springer, 2021-10-31)
    A continuous wave (CW) and a nanosecond pulsed wave (PW) lasers were used to join 1-mm thick sheets of SS304L (SS) austenitic stainless-steel to AA5251 (Al) aluminium alloy in an overlap joint configuration. The weld shape ...
  • Design of laser welding applied to T joints between steel and aluminium 
    Meco, Sonia; Ganguly, Supriyo; Williams, Stewart W.; McPherson, Norman (Elsevier, 2019-01-07)
    Laser conduction welding was used to directly join DH36 steel to AA5083 aluminium alloy in a T joint configuration, each plate with 6 mm of thickness. The effect of the process energy (via power density and interaction ...
  • Effect of laser processing parameters on the formation of intermetallic compounds in Fe-Al dissimilar welding 
    Meco, Sonia; Ganguly, Supriyo; Williams, Stewart W.; McPherson, Norman (Springer Intrnational, 2014-09-01)
    Fusion welding of steel to aluminum is difficult due to formation of different types of Fe-Al intermetallics (IMs). In this work, 2mm-thick steel was joined to 6mm aluminum in overlap configuration using a 8kW CW fiber ...
  • Fundamental understanding of the interaction of continuous wave laser with aluminium 
    Coroado, Júlio; Meco, Sonia; Williams, Stewart W.; Ganguly, Supriyo; Suder, Wojciech; Quintino, Luísa; Assunção, Eurico (Springer, 2017-07-13)
    In welding, the depth of penetration, weld profile and the corresponding thermal cycle are the three basic outcomes that a user wishes to control flexibly. In laser welding applications, controlled application of power and ...
  • Investigation of dissimilar metal welds by energy-resolved neutron imaging 
    Tresmin, Anton S.; Ganguly, Supriyo; Meco, Sonia; Pardal, Goncalo; Shinohara, Takenao; Feller, Bruce (International Union of Crystallography, 2016-06-09)
    A nondestructive study of the internal structure and compositional gradient of dissimilar metal-alloy welds through energy-resolved neutron imaging is described in this paper. The ability of neutrons to penetrate thick ...
  • Laser spot welding of laser textured steel to aluminium 
    Pardal, Goncalo; Meco, Sonia; Dunn, Andrew; Williams, Stewart W.; Ganguly, Supriyo; Hand, Duncan P.; Wlodarczyk, Krystian L. (Elsevier, 2017-03)
    Laser welding of dissimilar metals (steel and aluminium) was investigated with the aim to increase the maximum tensile shear load of the Fe-Al joints. The increase was achieved by texturing the surface of steel prior to ...
  • Laser welding of steel to aluminium: thermal modelling and joint strength analysis 
    Meco, Sonia; Cozzolino, Luis; Ganguly, Supriyo; Williams, Stewart W.; McPherson, Norman (Elsevier, 2017-04-10)
    The integrity of steel-aluminium dissimilar alloy joints is dependent on the thermal cycle applied during the joining process. The thermal field has a direct influence on the growth of the intermetallic compounds (IMC), ...
  • Light-weight Mg/Al dissimilar structures welded by CW laser for weight saving applications 
    Gao, Qiong; Meco, Sonia; Wang, Kehong (Springer, 2017-08-25)
    With the increasing demand of light-weight alloys, such as magnesium (Mg) and aluminum (Al), the need for joining these two alloys is unavoidable. In this study, AZ31B Mg and 1060 Al alloys were joined by continuous wave ...
  • New phenomenological model for comparison of lasers with different temporal outputs 
    Coroado, Julio; Williams, Stewart W.; Suder, Wojciech; Ganguly, Supriyo; Meco, Sonia; Pardal, Goncalo (Springer, 2022-04-06)
    Laser welding is distinguished by low heat input, low distortion, high travel speeds and accuracy. Traditional high-power pulsed wave (PW) lasers are being replaced by high-frequency low-pulse energy fibre lasers. However, ...
  • Selection of parameters in nanosecond pulsed wave laser micro-welding 
    Coroado, Julio; Ganguly, Supriyo; Suder, Wojciech; Williams, Stewart; Meco, Sonia; Pardal, Goncalo (Springer, 2021-05-31)
    The digital control of the latest nanosecond pulsed wave (PW) fibre lasers allows very high flexibility in controlling the application of the total energy to a workpiece, which brings several advantages to the joining ...