Philosophy of Engineering Design: techniques and analysis, synthesis and evaluation; The creative process: Design in the Corporate Environment: engineering research, marketing, finance and other corporate functions – and comprehensive design. Development Engineering; post-initial design development of new products, value engineering; development testing vs experimental research; case studies. Integrated treatment of mathematical modeling and analysis of systems. Modeling linear and nonlinear systems and their performance under transient, periodic and random loads, time domain and transfer techniques for linear continuous and
discrete time systems. Transfer function, integral equation representation, and state model for selected control systems. State variable methods. State transition matrix for time- invariant and time varying continuous and discrete systems. Adjoint Systems. Singularity functions and superposition integrals for linear systems. Distributed parameter system analysis. Selected numerical analysis methods and applications. Theory of design, material consideration, optimization techniques, similitude, stability, design of experiments and evaluation of results.
Physical principles, operating characteristics and practical applications of metal Additive Manufacturing processes: AM process selection, Laser processing, Laser blown powder, Plasma/TIG/MIG deposition, Laser wire deposition, Electron Beam deposition, Distortion control methods, Defects and how to minimize them
Stereolithography, 3D, Printing, Selective, Laser, Sintering(SLS). Direct Metal Deposition (DMD). Light Engineered Net Shaping(LENS), Liquid based systems (SLA, CLIP, Polyjet, Bio-printing), Powder based systems (SLS, SLM, EBM), Solid state (filament, thin sheets/foils) systems (LOM, FFF/FDM, Examination of different post processing techniques: Post-processing
techniques, Shot-peening, heat treatments, Hot isostatic pressing and Materials science
Metals: Direct Metal Deposition (DMD) and SLS, Polymer and Photopolymerization, Polymer and selective Laser Sintering(SLS), Ceramics: SLS and Laser Chemical Vapor Deposition(LCVD), Role of Rapid Solidification, Evolution of Non-Equilibrium Structure,
Structure Property relationship, Design of tailored structure for end application, Selection of process for desired applications. Metallurgical characteristics and microstructures of Additively Manufactured (AM) structures: Dislocations and strengthening mechanisms, Grain structure, Mechanical properties of metals, Failure, and recrystallisation, Phase Diagrams, Phase transformations: Development of micro structure and alteration of mechanical properties, Principles of metallographic examinations, Heat treatments, Corrosion of AM parts.
Introduction to finite element analysis, Overview of the FEA method, pre-processing, solution and post-processing, basic terminology, range of applications; Presentation of CAD model, meshing, symmetry, model development, implementation of force boundary conditions, solution, and post processor analysis, Concepts and applications, Finite element analysis in metal additive manufacturing :Key phenomena and problems, Thermal analysis, Mechanical analysis, Other sophisticated aspects e.g. microstructural modelling, molten pool fluid dynamics, grain growth and phase transformation , Introduction to finite element software ABAQUS, Practice: modelling additive manufacturing of a four-layered small steel wall using ABAQUS
Design guidelines in AM, Material selection (single or multi- phase “composite”), Tolerances in AM design, designing for net shape (post treatment to reach real part, designing for part orientation on print bed during printing, Over-hangs and support structures, Design based role of thin walls, infill and patterns, Design “repair” for AM parts
Fabricating three dimensional (3D) models directly from the computer aided design (CAD) data. Use the laboratory to model and fabricate metal/polymer complex shaped objected that are used in the engineering applications. Modelling and converting CAD models into FAB3 files, Simulation of process parameters using 3DXpert software, Fabrication of CAD models using DMP Flex100 (Metal 3D Printer) for engineering applications. Post processing equipment for powder preparation, extract the un-sintered powder, removal of supports and final part from substrate, and relieving internal stresses in printed part.
ACE students are required to carry out a research-based project in any of the thematic areas of ACE-SPED under the guidance of an academic staff appointed by the Centre. This will be captured in a standard Project Report to be examined as laid down in the guidelines of the School of Postgraduate Studies of the University of Nigeria. The report shall not have been, in part of in full submitted for any other diploma or degree of this University or of another educational institution
Design development (concept, validation), Materials selection, Process Selection (SLA, FFF, SLM, EBM, LOM) Parameterization, Fabrication and validation (inspection of design features), Cost relations (time, complexity, waste etc) with conventional manufacturing processes (CNC milling, Injection Moulding, Casting), Impact on logistics, warehousing and inventory.
ntroduction to quality assurance, Quality theory and methods for additive manufacturing: measurement science, statistical modelling, control charts characterization, design of experiments, and process improvements, Quality control during AM manufacture. Non-
destructive examination (NDE) and types of defects, Destructive testing methods, Non-destructive testing methods (dye penetrant, magnetic particle, eddy current, acoustic emission, radiographic inspection, tomography, ultrasonic inspection)
Distributed Manufacturing , Direct Digital Manufacturing , Biomedical Applications, Aerospace & Automotive Applications, power and energy, Mass Customization , Food & Consumer Applications Personalized Surgery, Art, Fashion, Jewelry, Toys & Other Application,
Intellectual Property, Tradeoffs of Open Source vs. Proprietary Systems, Gartner hype cycle viz 3D Printing, Total cost of ownership, Business Considerations for Material Selection, Commercialization Trends, Business Opportunities & Future Directions, AM today, Positioning AM in industry
Legal rules related to the ownership, management and enforcement of information in additive manufacturing. Primary areas of focus include: intellectual property (“IP”), law (patents, trademarks, trade secrets and copyrights), Network and cybersecurity tools in AM, cybersecurity law, product liability, industry practices such as licensing.
Modelling and converting CAD models into STL files, Simulation of process parameters using Catalyst software, Fabrication of CAD models using Fused Deposition Modelling (FDM) machine using polymers, Converting CT/MRI scan data using MIMICS Software to fabricate the Bio-models. Post processing equipment for support removal and surface finishing. Data acquired in the form of point cloud date via laser scanning using Einscan/Sense 3D system software and converting CAD models into STL files, Simulation of process parameters using Cura/ Flash Print software, Fabrication of CAD models using Fused Deposition Modelling (FDM).