About
17
Publications
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Introduction
Current institution
Current position
- Lecturer-2/Associate Professor in Additive Manufacturing
Additional affiliations
January 2023 - present
Position
- University Lecturer/Associate Professor B
Description
- Lecturer/ Associate Professor B in Additive Manufacturing-AMASE Project at South East Technological University-Waterford (previously known as WIT-Waterford)
Education
January 2019 - March 2023
August 2009 - July 2012
Field of study
- Friction Welding to join Dissimilar Metals-Ocean Engineering
October 2004 - July 2009
Publications
Publications (17)
Laser powder bed fusion (LPBF) is a promising metal additive manufacturing technology for producing functional components. However, there are still a lot of obstacles to overcome before this technology is considered mature and trustworthy for wider industrial applications. One of the biggest obstacles is the difficulty in ensuring the repeatability...
This research aims to study the diverse surface topographical features that emerge on both longitudinal and latitudinal facets' external and internal surfaces of a bespoke ball artefact. The focus variation measurement technique is employed to visually inspect the surface quality derived from a plethora of surface topographical defects and asperiti...
This research aims to study the impact of critical LPBF process parameters on the resultant surface roughness of LPBF processed 316L stainless steel artefact’s top surface using Taguchi design of experiments (DoE). Based on the obtained results, the layer thickness is the most influential parameter, followed by point distance, exposure time, laser...
![FIGURE 1. AM artefact with multiple complex build directions [10].](profile/Weidong-Liu-15/publication/365651123/figure/fig1/AS:11431281098922183@1669135016233/AM-artefact-with-multiple-complex-build-directions-10_Q320.jpg)
Additive manufacturing (AM) can produce complex geometries, which is difficult to achieve with traditional processing methods. Selective laser melting (SLM), a commonly used technique in the metal AM industry, performs layer-by-layer fabrication by melting metal powders using one or multiple focused laser beams. Due to the unique manufacturing proc...
Laser Powder Bed Fusion process is regarded as the most versatile metal additive manufacturing process, which has been proven to manufacture near net shape up to 99.9% relative density, with geometrically complex and high-performance metallic parts at reduced time. Steels and iron-based alloys are the most predominant engineering materials used for...
Additive manufacturing (AM) offers numerous advantages like unlimited freedom to design the most complicated parts without expensive support tools and moulds at reduced lead-times. However, AM is not completely established to meet compliance of industrial standards due to intrinsic fabrication process induced rougher surface quality and poor dimens...
Additive manufacturing offers the advantage of infinite freedom to design and fabricate complex parts at reduced lead-time. However, the surface quality of additively manufactured parts remains well behind the conventionally processed counterparts. This paper aims to systematically investigate the impact of varying surface inclination angles with r...
This study aims to understand the uncertainty about the optimum or best pin position (Dp) for friction stir lap welding (FSLW) of Al-Cu. Tensile shear testing is used to determine the Mechanical strength of FSL welds under static loading. Fracture strength (σLap) corresponding to the maximum load in a test over the sample width is used as the stren...
Friction Stir Welding (FSW) is a relatively new solid state joining technique which is used not only for joining the aluminum and its alloys but also has potential for joining dissimilar materials with very different physical and mechanical properties which are hard to weld using conventional fusion welding processes. Tensile shear testing is used...
Al-steel friction stir lap welding (FSLW) experiments have been conducted to study the effects of welding parameters including tool pin positioning on microstructures formed in the Al-steel interface region, and on joint strength.The joint strength is defined as maximum applied force over the width (Fm/ws) of the test sample, of the welds. Differen...
In the present experimental study, wear performance of the diamond coated cutting tools with various coating architectures was studied by turning Alm–30%SiCp metal matrix composite material. Chemical vapor deposited (CVD) diamond can be classified into nanocrystalline diamond (NCD) and microcrystalline diamond (MCD) that are known for their distinc...
The effects of joint line remnant (JLR), kissing bond (KB), and clearance between the sheets (Gap) on The JLR has no significant influence in the investigated conditions. KB and Gap-induced defects do not significantly influence plastic yield but may induce premature crack initiation by ductile tearing and intergranular decohesions respectively. A...
Friction Stir Welding (FSW) is a relatively new solid state joining technique which is used not only for joining the aluminium and its alloys but also has potential for joining dissimilar materials with very different physical and mechanical properties that are hard to weld using conventional fusion welding processes. FSW of aluminium and its alloy...
The purpose of this work was to join and assess the development of solid state joints of dissimilar material AA6082 aluminium alloy and AISI 304 stainless steel, via continuous drive friction welding process, which combines the heat generated from friction between two surfaces and plastic deformation. Tests were conducted with different welding pro...
