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Browsing by Author "Biswal, Romali"

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Comparison of microstructure refinement in wire-arc additively manufactured Ti–6Al–2Sn–4Zr–2Mo–0.1Si and Ti–6Al–4V built with inter-pass deformation

Davis, Alec E.; Caballero Ramos, Armando; Biswal, Romali; Williams, Stewart; Prangnell, P. B. (Springer, 2022-09-22)

The titanium alloy Ti–6Al–2Sn–4Zr–2Mo–0.1Si (Ti6242) has been deposited for the first time by a directed energy deposition process using a wire and arc system—i.e., wire-arc additive manufacturing (WAAM)—with and without ...
Criticality of porosity defects on the fatigue performance of wire + arc additive manufactured titanium alloy

Biswal, Romali; Zhang, Xiang; Syed, Abdul Khadar; Awd, Mustafa; Ding, Jialuo; Walther, Frank; Williams, Stewart W. (Elsevier, 2019-01-28)

This study was aimed at investigating the effect of internal porosity on the fatigue strength of wire + arc additive manufactured titanium alloy (WAAM Ti-6Al-4V). Unlike similar titanium alloys built by the powder bed ...
Evaluation of cyclic loading effects on residual stress relaxation in offshore wind welded structures

Statti, Giuseppe; Mehmanparast, Ali; Biswal, Romali; Rizzo, Cesare (World Scientific Publishing, 2021-08-14)

Monopile foundations contain welding residual stresses and are widely used in industry to support offshore wind turbines (OWTs). The monopiles are subjected to hammering loads during installation and cyclic loads during ...
Experimental investigation of lattice deformation behavior in S355 steel weldments using neutron diffraction technique

Biswal, Romali; Mehmanparast, Ali; Ganguly, Supriyo; Kelleher, Joe (Springer, 2021-08-19)

This study aims to investigate the influence of welding process on the elastic lattice deformation and its effects on fatigue and fracture behavior of S355 G10+M steel, which is widely used in fabrication of offshore wind ...
Fatigue damage analysis of offshore wind turbine monopile weldments

Biswal, Romali; Mehmanparast, Ali (Elsevier, 2019-08-25)

Offshore wind turbines (OWT) are subjected to harsh environmental conditions in addition to the variable service loads. The present study is aimed at performing a realistic fatigue life estimation of the monopile structure ...
High cycle fatigue and fatigue crack growth rate in additive manufactured titanium alloys

Zhang, Xiang; Syed, Abdul Khadar; Biswal, Romali; Martina, Filomeno; Ding, Jialuo; Williams, Stewart W. (Springer, 2019-07-03)

The Wire + Arc Additive Manufacture (WAAM) process can produce large metal parts in the metre scale, at much higher deposition rate and more efficient material usage compared to the powder bed fusion additive manufacturing ...
On the performance of monopile weldments under service loading conditions and fatigue damage prediction

Biswal, Romali; Al Mamun, Abdullah; Mehmanparast, Ali (Wiley, 2021-03-01)

Thick weldments used in offshore structures frequently act as fatigue crack initiation sites due to stress concentration at weld toe as well as weld residual stress fields. This paper investigates the cyclic deformation ...
The role of microstructure and local crystallographic orientation near porosity defects on the high cycle fatigue life of an additive manufactured Ti-6Al-4V

Shamir, Muhammad; Syed, Abdul Khadar; Janik, Vit; Biswal, Romali; Zhang, Xiang (Elsevier, 2020-08-21)

Titanium alloys such as Ti-6Al-4V built by most of the additive manufacturing processes are known to contain process induced defects, non-conventional microstructure and strong crystallographic texture; all of which can ...

Browsing by Author "Biswal, Romali"

Browsing by Author "Biswal, Romali"

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