Author
Richard J.M. Hague
Other affiliations: University of Bradford, De Montfort University, Loughborough University
Bio: Richard J.M. Hague is an academic researcher from University of Nottingham. The author has contributed to research in topics: Selective laser melting & Selective laser sintering. The author has an hindex of 47, co-authored 191 publications receiving 8725 citations. Previous affiliations of Richard J.M. Hague include University of Bradford & De Montfort University.
Papers published on a yearly basis
Papers
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09 May 2006
TL;DR: In this paper, the authors present a discussion of the potential of rapid manufacturing in the automotive industry and present a case study of how to modify a garden fork handle in order to make it more efficient.
Abstract: List of Contributors. Editors. Foreword (Terry Wohlers). 1 Introduction to Rapid Manufacturing (Neil Hopkinson, Richard Hague and Phill Dickens). 1.1 Definition of Rapid Manufacturing. 1.2 Latitude of Applications. 1.3 Design Freedom. 1.4 Economic for Volumes down to One. 1.5 Overcoming the Legacy of Rapid Prototyping. 1.6 A Disruptive Technology. 1.7 A Breakdown of the Field of Rapid Manufacturing. 2 Unlocking the Design Potential of Rapid Manufacturing (Richard Hague). 2.1 Introduction. 2.2 Potential of Rapid Manufacturing on Design. 2.3 Geometrical Freedom. 2.4 Material Combinations. 2.5 Summary. 3 Customer Input and Customisation (R.I. Campbell). 3.1 Introduction. 3.2 Why Is Customer Input Needed? 3.3 What Input can the Customer Make? 3.4 How Can Customer Input Be Captured? 3.5 Using Customer Input within the Design Process. 3.6 What Is Customisation? 3.7 Determining Which Features to Customise. 3.8 Additional Customisation Issues. 3.9 Case Study - Customising Garden Fork Handles. 3.10 Conclusions. 4 CAD and Rapid Manufacturing (Rik Knoppers and Richard Hague). 4.1 Introduction. 4.2 CAD Background. 4.3 Relations between CAD and Rapid Manufacturing. 4.4 Future Developments Serving Rapid Manufacturing. 4.5 CAD for Functionally Graded Materials (FGMs). 4.6 Conclusion. 5 Emerging Rapid Manufacturing Processes (Neil Hopkinson and Phill Dickens). 5.1 Introduction. 5.2 Liquid-Based Processes. 5.3 Powder-Based Processes. 5.4 Solid-Based Processes. 6 Materials Issues in Rapid Manufacturing (David L. Bourell). 6.1 Role of Materials in Rapid Manufacturing. 6.2 Viscous Flow. 6.3 Photopolymerization. 6.4 Sintering. 6.5 Infiltration. 6.6 Mechanical Properties of RM Parts. 6.7 Materials for RM Processes. 6.8 The Future of Materials in Rapid Manufacturing. 7 Functionally Graded Materials (Poonjolai Erasenthiran and Valter Beal). 7.1 Introduction. 7.2 Processing Technologies. 7.3 Rapid Manufacturing of FGM Parts - Laser Fusion. 7.4 Modelling and Software Issues. 7.5 Characterisation of Properties. 7.6 Deposition Systems. 7.7 Applications. 8 Materials and Process Control for Rapid Manufacture (Tim Gornet). 8.1 Introduction. 8.2 Stereolithography. 8.3 Selective Laser Sintering. 8.4 Fused Deposition Modeling. 8.5 Metal-Based Processes. 9 Production Economics of Rapid Manufacture (Neil Hopkinson). 9.1 Introduction. 9.2 Machine Costs. 9.3 Material Costs. 9.4 Labour Costs. 9.5 Comparing the Costs of Rapid Manufacture with Injection Moulding. 10 Management and Implementation of Rapid Manufacturing (Chris Tuck and Richard Hague). 10.1 Introduction. 10.2 Costs of Manufacture. 10.3 Overhead Allocation. 10.4 Business Costs. 10.5 Stock and Work in Progress. 10.6 Location and Distribution. 10.7 Supply Chain Management. 10.8 Change. 10.9 Conclusions. 11 Medical Applications (Russ Harris and Monica Savalani). 11.1 Introduction. 11.2 Pre-Surgery RM. 11.3 Orthodontics. 11.4 Drug Delivery Devices. 11.5 Limb Prosthesis. 11.6 Specific Advances in Computer Aided Design (CAD). 11.7 In Vivo Devices. 12 Rapid Manufacturing in the Hearing Industry (Martin Masters, Therese Velde and Fred McBagonluri). 12.1 The Hearing Industry. 12.2 Manual Manufacturing. 12.3 Digital Manufacturing. 12.4 Scanning. 12.5 Electronic Detailing. 12.6 Electronic Modeling. 12.7 Fabrication. 12.8 Equipment. 12.9 Selective Laser Sintering (SLS). 12.10 Stereolithography Apparatus (SLA). 12.11 Raster-Based Manufacturing. 12.12 Materials. 12.13 Conclusion. 13 Automotive Applications (Graham Tromans). 13.1 Introduction. 13.2 Formula 1. 13.3 Cooling Duct. 13.4 The 'Flickscab'. 13.5 NASCAR. 13.6 Formula Student. 14 Rapid Manufacture in the Aeronautical Industry (Brad Fox). 14.1 Opportunity. 14.2 Overview. 14.3 Historical Perspective. 14.4 Aeronautical Requirements for RM. 14.5 Why RM Is Uniquely Suited to the Aeronautical Field. 14.6 Acceptable Technologies. 14.7 Qualifying RM Systems. 14.7.1 Qualifying SLS at British Aerospace (BAe). 14.7.2 Qualifying SLS at Northrop Grumman. 14.8 Summary. 14.9 Case Studies. 15 Aeronautical Case Studies using Rapid Manufacture (John Wooten). 15.1 Introduction. 15.2 Problem and Proposed Solution. 15.3 Benefits of a Rapid Manufacture Solution. 15.4 Pre-Production Program. 15.5 Production. 15.6 Summary. 16 Space Applications (Roger Spielman). 16.1 Introduction. 16.2 Building the Team. 16.3 Quality Assurance. 16.4 How to 'Qualify' a Part Created Using This Process. 16.5 Producing Hardware. 17 Additive Manufacturing Technologies for the Construction Industry (Rupert Soar). 17.1 Introduction. 17.2 The Emergence of Freeform Construction. 17.3 Freeform Construction Processes: A Matter of Scale. 17.4 Conclusions. 18 Rapid Manufacture for the Retail Industry (Janne Kyttanen). 18.1 Introduction. 18.2 Fascinating Technology with Little Consumer Knowledge. 18.3 The Need for Rapid Prototyping to Change to Rapid Manufacturing. 18.4 Rapid Manufacturing Retail Applications. 18.4.1 Lighting. 18.4.2 Three-Dimensional Textiles. 18.5 Mass Customisation. 18.5.1 Mass Customised Retail Products. 18.5.2 Future Posibilities of Mass Customised RM Products. 18.5.3 Limitations and Possibilities. 18.6 Experimentation and Future Applications. Index.
807 citations
TL;DR: A comprehensive understanding of the interrelation between the various aspects of the subject, as this is essential to demonstrate credibility for industrial needs, is presented in this paper, which highlights some key topics requiring attention for further progression.
761 citations
TL;DR: In this article, the authors present a review of the factors that need to be considered when selecting and processing polymers and the research that has been carried out to date, focussing on laser sintering, which is one of the most widely used additive manufacturing approaches.
621 citations
TL;DR: A model of production cost for two different Additive Manufacturing systems used commercially for the manufacture of end-use metal parts is constructed, suggesting that the observed deposition rates are not sufficient for the adoption of EBM and DMLS in high volume manufacturing applications.
463 citations
18 Jul 2016-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the authors examined the mechanical behavior of uniform and graded density SLM Al-Si10-Mg lattices under quasistatic loading and determined their effective elastic modulus and Gibson-Ashby coefficients, C1 and α, which can form the basis of new design methodologies for superior components.
Abstract: Metal components with applications across a range of industrial sectors can be manufactured by selective laser melting (SLM). A particular strength of SLM is its ability to manufacture components incorporating periodic lattice structures not realisable by conventional manufacturing processes. This enables the production of advanced, functionally graded, components. However, for these designs to be successful, the relationships between lattice geometry and performance must be established. We do so here by examining the mechanical behaviour of uniform and graded density SLM Al-Si10-Mg lattices under quasistatic loading. As-built lattices underwent brittle collapse and non-ideal deformation behaviour. The application of a microstructure-altering thermal treatment drastically improved their behaviour and their capability for energy absorption. Heat-treated graded lattices exhibited progressive layer collapse and incremental strengthening. Graded and uniform structures absorbed almost the same amount of energy prior to densification, 6.3±0.26.3±0.2 MJ/m3 and 5.7±0.25.7±0.2 MJ/m3, respectively, but densification occurred at around 7% lower strain for the graded structures. Several characteristic properties of SLM aluminium lattices, including their effective elastic modulus and Gibson-Ashby coefficients, C1 and α, were determined; these can form the basis of new design methodologies for superior components in the future.
400 citations
Cited by
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TL;DR: There is, I think, something ethereal about i —the square root of minus one, which seems an odd beast at that time—an intruder hovering on the edge of reality.
Abstract: There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.
Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …
33,785 citations
TL;DR: A review of the emerging research on additive manufacturing of metallic materials is provided in this article, which provides a comprehensive overview of the physical processes and the underlying science of metallurgical structure and properties of the deposited parts.
4,192 citations
TL;DR: A comprehensive review of the main 3D printing methods, materials and their development in trending applications was carried out in this paper, where the revolutionary applications of AM in biomedical, aerospace, buildings and protective structures were discussed.
Abstract: Freedom of design, mass customisation, waste minimisation and the ability to manufacture complex structures, as well as fast prototyping, are the main benefits of additive manufacturing (AM) or 3D printing. A comprehensive review of the main 3D printing methods, materials and their development in trending applications was carried out. In particular, the revolutionary applications of AM in biomedical, aerospace, buildings and protective structures were discussed. The current state of materials development, including metal alloys, polymer composites, ceramics and concrete, was presented. In addition, this paper discussed the main processing challenges with void formation, anisotropic behaviour, the limitation of computer design and layer-by-layer appearance. Overall, this paper gives an overview of 3D printing, including a survey on its benefits and drawbacks as a benchmark for future research and development.
4,159 citations
TL;DR: The state-of-the-art of additive manufacturing (AM) can be classified into three categories: direct digital manufacturing, free-form fabrication, or 3D printing as discussed by the authors.
Abstract: This paper reviews the state-of-the-art of an important, rapidly emerging, manufacturing technology that is alternatively called additive manufacturing (AM), direct digital manufacturing, free form fabrication, or 3D printing, etc. A broad contextual overview of metallic AM is provided. AM has the potential to revolutionize the global parts manufacturing and logistics landscape. It enables distributed manufacturing and the productions of parts-on-demand while offering the potential to reduce cost, energy consumption, and carbon footprint. This paper explores the material science, processes, and business consideration associated with achieving these performance gains. It is concluded that a paradigm shift is required in order to fully exploit AM potential.
4,055 citations
31 Oct 2001
TL;DR: The American Society for Testing and Materials (ASTM) as mentioned in this paper is an independent organization devoted to the development of standards for testing and materials, and is a member of IEEE 802.11.
Abstract: The American Society for Testing and Materials (ASTM) is an independent organization devoted to the development of standards.
3,792 citations