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Browsing by Author "Williams, Stewart"

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Hybrid wire - arc additive manufacture and effect of rolling process on microstructure and tensile properties of Inconel 718

Zhang, Tao; Li, Huigui; Gong, Hai; Wu, Yunxin; Diao, Chenglei; Zhang, Xiaoyong; Williams, Stewart (Elsevier, 2021-09-08)

Wire - arc additive manufacture (WAAM) is suitable for Inconel 718 components due to its high deposition efficiency. However, large columnar dendrites decrease the mechanical properties and can cause severe mechanical ...
In-process non-destructive evaluation of metal additive manufactured components at build using ultrasound and eddy-current approaches

Zimermann, Rastislav; Mohseni, Ehsan; Foster, Euan A.; Vasilev, Momchil; Loukas, Charalampos; Vithanage, Randika K. W.; Macleod, Charles N.; Lines, David; Pimentel Espirindio E. Silva, Misael; Fitzpatrick, Stephen; Halavage, Steven; McKegney, Scott; Rizwan, Muhammad Khalid; Pierce, Stephen Gareth; Williams, Stewart; Ding, Jialuo (Elsevier, 2023-11-03)

Metal additive manufacturing is rapidly gaining popularity and interest from sectors aiming to produce larger-scale high-value components cost-effectively. To ensure each component is leaving the fabrication cell defect-free, ...
Increasing the speed of automated ultrasonic inspection of as-built additive manufacturing components by the adoption of virtual source aperture

Zimermann, Rastislav; Mohseni, Ehsan; Vithanage, Randika K. W.; Lines, David; Foster, Euan; Macleod, Charles N.; Pierce, Stephen Gareth; Marinelli, Gianrocco; Williams, Stewart; Ding, Jialuo (Elsevier, 2022-06-15)

Wire + Arc Additive Manufacture (WAAM) is an economical manufacturing technique to build components. To maintain the commercial and technical benefits, inspection is desired at each layer of the build. New conformable ...
Influence of deposition strategies on residual stress in wire + arc additive manufactured titanium Ti-6Al-4V

Ahmad, Bilal; Zhang, Xiang; Guo, Hua; Fitzpatrick, Michael E.; MacHado Santos Carvalho Neto, Leonor; Williams, Stewart (MDPI, 2022-01-28)

Wire + arc additive manufacturing (WAAM) is a modern manufacturing process that has opened new possibilities for rapid builds and reductions in material wastage. This paper explores residual stress in WAAM Ti-6Al-4V walls ...
Influence of deposition strategies on tensile and fatigue properties in a wire + arc additive manufactured Ti-6Al-4V

Syed, Abdul Khadar; Zhang, Xiang; Caballero, Armando; Shamir, Muhammad; Williams, Stewart (Elsevier, 2021-04-15)

This paper investigates the influence of two different deposition strategies, oscillation and parallel pass, on the tensile and high cycle fatigue properties of a wire + arc additive manufactured Ti-6Al-4V alloy in the ...
Influence of shielding gas nozzle design on power density distribution in low-current TIG welding arcs

Egerland, Stephan; Colegrove, Paul; Williams, Stewart (Springer, 2020-03-17)

Shielding gas nozzle diameter variation and its impact on the anodic power distribution of low-current tungsten inert gas arcs were investigated, while maintaining either shielding gas flow rate or flow velocity constant. ...
Investigation of 300M ultra-high-strength steel deposited by wire-based gas metal arc additive manufacturing

Wang, Jun; Diao, Chenglei; Taylor, Mark; Wang, Chong; Pickering, Ed; Ding, Jialuo; Pimentel, Misael; Williams, Stewart (Springer, 2023-11-01)

300 M ultra-high-strength steel (UHSS) is widely used to produce landing gear components for aircraft. The conventional manufacturing route for these components involves extensive machining and significant material wastage. ...
Manufacture of large-scale space exploration components using wire + arc additive manufacturing

Diao, Chenglei; Eloise Eimer, Eloise Eimer; Mancini, Simone; Krishnaswamy, Surya; Schwarz, Florian; Pagone, Emanuele; Ding, Jialuo; Williams, Stewart; Pinter, Zsolt; Martina, Filomeno (ICAS - International Council of the Aeronautics Sciences, 2022-09-09)

Cranfield University, Thales Alenia Space and WAAM3D together, combining their expertise knowledge and technologies on Wire + arc additive manufacture (WAAM), created a route for manufacturing large-scale space exploration ...
Measurements of wire + arc additive manufacturing layer heights during arc operation using coherent range-resolved interferometry (CO-RRI)

Kissinger, Thomas; Gomis, B.; Ding, Jialuo; Williams, Stewart; Tatam, Ralph P. (EUSPEN, 2019-09-18)

Wire + arc additive manufacture (WAAM)promises high build rates and is well-suited to the manufacture of large structures.In-process measurements of layer height are critical for WAAM process control but are difficult to ...
Mechanical performances of the interface between the substrate and deposited material in aluminium wire Direct Energy Deposition

Eimer, Eloise; Williams, Stewart; Ding, Jialuo; Ganguly, Supriyo; Chehab, Bechir (Elsevier, 2023-01-06)

Wire and Arc Additive manufacturing (WAAM) is a Direct Energy Deposition process suitable for the manufacture of large aluminium components. Additive Manufacturing can enable the production of functionally graded structure ...
Metal 3D-printing for repair of steel structures

Ghafoori, Elyas; Dahaghin, Hamid; Diao, Chenglei; Pichler, Niels; Li, Lingzhen; Ding, Jialuo; Ganguly, Supriyo; Williams, Stewart (Ernst & Sohn (Wiley), 2023-09-12)

This work employs an innovative technique, wire arc additive manufacturing (WAAM) which is a type of directed energy deposition, for fatigue strengthening of cracked steel components. Different steel plates with a central ...
Microstructural characterisation and mechanical properties of Ti-5Al-5V-5Mo-3Cr built by wire and arc additive manufacture

Caballero, Armando; Davis, Alec E.; Kennedy, Jacob R.; Fellowes, Jonathan; Garner, Alistair; Williams, Stewart; Prangnell, Philip (Taylor and Francis, 2022-08-18)

The as-deposited microstructure and mechanical properties of the near-β titanium alloy Ti-5Al-5V-5Mo-3Cr (Ti-5553) produced by wire-arc additive manufacture (WAAM) were investigated, to understand its microstructural ...
Modelling and optimising hybrid process of wire arc additive manufacturing and high-pressure rolling

Gornyakov, Valeriy; Sun, Yongle; Ding, Jialuo; Williams, Stewart (Elsevier, 2022-09-22)

Hybrid process of wire arc additive manufacturing (WAAM) and high-pressure rolling can build large-scale components with low detrimental residual stress (RS) and distortion. We developed an efficient coupled process model ...
Multi-energy source (MES) configuration for bead shape control in wire-based directed energy deposition (w-DED)

Chen, Guangyu; Williams, Stewart; Ding, Jialuo; Wang, Chong; Suder, Wojciech (Elsevier, 2022-03-09)

A multi-energy source (MES) method featuring a high-power scanning laser (SL) was used to achieve independent control of layer width and height in a wire-based directed energy deposition (w-DED) process. In the MES system, ...
Multi-layer ultrasonic imaging of as-built wire + arc additive manufactured components

Zimermann, Rastislav; Mohseni, Ehsan; Lines, David; Vithanage, Randika K. W.; MacLeod, Charles N.; Pierce, Stephen G.; Gachagan, Anthony; Javadi, Yashar; Williams, Stewart; Ding, Jialuo (Elsevier, 2021-10-13)

Non-Destructive Evaluation (NDE) of metal Additively Manufactured (AM) components is crucial for the identification of any potential defects. Ultrasonic testing is recognised for its volumetric imaging capability in metallic ...
Near-surface defect detection in additively manufactured components using laser induced phased arrays with surface acoustic wave crosstalk suppression

Davis, Geo; Stratoudaki, Theodosia; Lukacs, Peter; Riding, Matthew W.; Al Fuwaires, Ahmed; Kamintzis, Panagiotis; Pieris, Don; Keenan, Alan; Wilcox, Paul; Pierce, Gareth; MacLeod, Charles; Williams, Stewart (Elsevier, 2023-11-24)

In-process inspection of the additive manufacturing process requires a technique that can provide reliable measurements given the extreme operating environments, the small size of the defects and the cyclic melting and ...
A novel cold wire gas metal arc (CW-GMA) process for high productivity additive manufacturing

Wang, Chong; Wang, Jun; Bento, João; Ding, Jialuo; Rodrigues Pardal, Goncalo; Chen, Guangyu; Qin, Jian; Suder, Wojciech; Williams, Stewart (Elsevier, 2023-07-01)

Wire-arc directed energy deposition (DED) is suitable for depositing large-scale metallic components at high deposition rates. In order to further increase productivity and efficiency by reducing overall manufacturing time, ...
Optimal droplet transfer mode maintenance for wire + arc additive manufacturing (WAAM) based on deep learning

Qin, Jian; Wang, Yipeng; Ding, Jialuo; Williams, Stewart (Springer, 2022-07-24)

In the last decade, wire + arc additive manufacturing (WAAM), which is one of the most promising metal additive manufacturing technologies, has been attracting high interest from both academia and industry. WAAM systems ...
Parametric study of melt pool geometry in hybrid plasma arc-laser melting process for additive manufacturing application

Wang, Chong; Suder, Wojciech; Ding, Jialuo; Williams, Stewart (Springer, 2023-01-20)

Wire-based hybrid arc-laser additive manufacturing is suitable for producing large metallic parts (metres in scale) with high deposition rates and near-net-shape. In this process, the surface quality and dimensional accuracy ...
The potential for grain refinement of wire-arc additive manufactured (WAAM) Ti-6Al-4V by ZrN and TiN inoculation

Kennedy, Jacob R.; Davis, Alec E.; Caballero Ramos, Armando; Williams, Stewart; Pickering, E. J.; Prangnell, P. B. (Elsevier, 2021-02-23)

Wire-Arc Additive Manufacturing (WAAM) of large near-net-shape titanium components has the potential to reduce costs and lead-time in many industrial sectors including aerospace. However, with titanium alloys, such as ...

Browsing by Author "Williams, Stewart"

Browsing by Author "Williams, Stewart"

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