A5067841990- Energy Efficiency and Management
- Additive Manufacturing Materials and Processes
- Laser Material Processing Techniques
- Surface Roughness and Optical Measurements
- High Entropy Alloys Studies
- Manufacturing Process and Optimization
- Welding Techniques and Residual Stresses
- solar cell performance optimization
- Chalcogenide Semiconductor Thin Films
- Industrial Vision Systems and Defect Detection
- Advanced Semiconductor Detectors and Materials
- Adhesion, Friction, and Surface Interactions
- High-Temperature Coating Behaviors
- Tribology and Lubrication Engineering
- Additive Manufacturing and 3D Printing Technologies
- Quantum Dots Synthesis And Properties
- Sustainable Supply Chain Management
- Photovoltaic Systems and Sustainability
- Environmental Impact and Sustainability
- Silicon and Solar Cell Technologies
- Advanced machining processes and optimization
Loughborough University
2014-2023
The combustion of fossil fuels for energy generation has contributed considerably to the effects climate change. In order reduce fuel consumption, designers are increasingly seeking consumption products over their life cycle. To achieve a significant reduction in it is essential that considerations incorporated within design phase product, since majority product's environmental impact determined during this phase. This work proposes new 'Design Energy Minimization' (DfEM) approach, which...
Within the global manufacturing industry, there is increasing recognition of need to improve energy efficiency, reduce both costs and carbon footprint. Significant work has sought efficiency a variety different processes, but in case laser welding, research primarily focussed on laser-material interaction not rationalisation. This addresses this knowledge gap by methodically investigating analysing requirements welding process. In study, mathematical model been created order take...
Abstract In an increasingly technological world, energy efficiency in manufacturing is of great importance. While large corporations have the resources to commission studies with minimal impact on operations, this not true for small and medium enterprises (SME’s). These businesses will commonly only a number laser processing cells; thus, carry out study can be extremely disruptive normal operations. Since rising global costs also largest who lack benefit economies scale, they are...
Due to their high speed and versatility, laser processing systems are now commonplace in many industrial production lines. However, as the need reduce environmental impact from manufacturing industry becomes more urgent, there is opportunity evaluate identify opportunities improve energy efficiencies thus carbon footprint. While other researchers have studied processing, majority of previous work on has focused beam–material interaction, overlooking whole system viewpoint significance...
Abstract Laser cladding is a well-established technique, with the majority of prior numerical modelling work focused on delivery and melt pool behaviour powder-based processes. This research presents new investigations into optimised laser beam shaping for unique characteristics wire-based processes, where direct substrate heating, as well heat transfer between wire substrate, important. The value this subject improved deposition rates dense metallic structures that can be achieved by...
Within the family of thin-film photovoltaics (PV), cadmium telluride has fastest growing market share due to its high efficiencies and low cost. However, as with other PV technologies, energy required manufacture panels is excessive, encompassing environmental impact manufacturing payback times order 2–3 years. As part process, are annealed at temperatures approximately 400 °C for 30 min, which inherently inefficient. Laser heating previously been investigated an alternative process...
We report on the effect of a new laser annealing treatment for thin film CdTe solar cells using 808 nm diode laser. As-deposited, annealed and MgCl <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> treated/laser films have been analysed. One part work has focused understanding efficacy activation by annealing. The results show partial chlorine diffusion associated re-crystallisation absorber. second this chemical composition surface. It...
In laser cladding, the potential benefits of wire feeding are considerable. Typical problems with use powder, such as gas entrapment, sub-100% material density and low deposition rate all avoided wire. However, a powder-based source is industry standard, wire-based generally regarded an academic curiosity. This because, although methods have been shown to be capable superior quality results, process more difficult control. this work, for shaping techniques, combined existing holographic...
Laser cladding with wire utilises a focussing lens to melt the surface of substrate, into which is fed build up clad track on surface. Process reliablity issues in practice include; tracks high levels dilution, cracking and other defects.Key this reflectivity calculations. Here using Fresnel equations that relate angle incidence heat absorption, we are able show direct correlation between applied profile laser beam absorption surface; has been modelled COMSOL multiphysics conduction...
Laser material interactions are routinely praised for their selective processing and high rates. However, this does not guarantee that the total manufacturing system has a low energy intensity compared to conventional processes. This paper presents results of collaborative UK China research project improve comprehension consumption carbon emissions laser-based manufacturing. A range individual laser cutting, welding, cleaning processes were studied assess efficiency, including its ancillary...
In manufacturing, there is increasing recognition of the need to increase energy efficiency, both reduce process cost and improve carbon footprint. order achieve this, it necessary understand how manufacturing systems use directly indirectly. These types analyses have been carried out at level for traditional machining processes, as well factory macroenergy flows bottlenecks. Other researchers accomplished considerable optimization work laser processing. However, emphasis this has on...
Characterisation of Cadmium Telluride (CdTe) thin films commonly requires the use invasive techniques for identification their structural growth and detection defects which occur during deposition process. Structural presence can affect performance final device. A non-invasive inspection system CdTe has been developed to identify properties this material, comparing two different techniques, Close Space Sublimation (CSS) Magnetron Sputtering (MS). The proposed utilises a 1 μm diode laser...
CdTe-based thin film solar cells currently represent one of the fastest growing PV technologies, with a superior combination efficiency, energy payback time and lifecycle environmental impact. However, current post-deposition annealing treatment is still an intensive step manufacturing process. A novel method presented for CdTe using high-power diode laser (35 W, 808 nm) thermal post-processing, combined holographic optical elements (HOE's) beam heat flow control. The advantage lies in its...