Browsing by Subject "Additive Layer Manufacturing"

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Development of an Additive Layer Manufacturing (ALM) Selection Tool for Direct Manufacture of Products
(2008-09-10) Smith, P.C.; Rennie, A.E.W.
Advancements in Additive Layer Manufacturing (ALM) technology and a broader knowledge base of process and material capabilities make ALM increasingly, a more valid manufacturing option. Small creative industry and industrial designers in the UK, as well as experienced engineers, can benefit from the freedom from design, manufacture and distribution constraints that ALM technology offers, yet they are unaware of the opportunities available. This paper present a method for selecting an ALM technology as a manufacturing method, based on a part specification, as an ALM selection tool. Selecting appropriate processes, materials and giving design for rapid manufacture advice are part of the recommendations offered from this ALM selection tool.
Optimization of Strut Diameters in Lattice Structures
(University of Texas at Austin, 2012-08-15) Teufelhart, S.; Reinhart, G.
Additive manufactured lattice structures show a high potential for lightweight design. Currently, these structures have a periodical build-up, which leads to disadvantageous stress states. On the one hand, unfavorable bending loads on the single struts appear. This can be avoided by an adaption of the course of the structure to the main stress directions inside the part. On the other hand, different stress values are appearing inside the single struts. Therefore, a procedure for the optimization of the struts diameters is presented. Thus, it becomes possible to achieve equal stresses in the whole structure and gain a better lightweight performance.
Rule-Based Free-Form Deformation for Additive Layer Manufacturing
(University of Texas at Austin, 2011-08-17) Eschey, C.; Feldmann, S.; Zaeh, M.F.
Additive Layer Manufacturing (ALM) provides manufacturing of nearly arbitrary geometries flexibly and economically. The part properties, which are reachable by state-of-the-art systems, are able to fulfill the customer requirements in terms of series and spare part production. Nevertheless, there still arise problems prohibiting the prevalent application of those techniques. The presented approach focuses on a rule-based Free-Form Deformation (FFD) for ALM. The machine is characterized by a set of rules, which is identified through observable properties extracted from precedent building processes. Adapting and applying the FFD algorithm, a pre-deformation of desired geometries based on exclusively geometric rules is achieved. Using an exclusively geometric deformation technique, CAD data is deformed before manufacturing to provide higher part quality by considering the unique characteristic of a machine.
Simulation Models for 3D Inkjet Printing – Material and Process Design
(University of Texas at Austin, 2010) Kellner, I.N.; Zaeh, M.F.
Due to the ability to produce complex parts with no need for pre-tooling, Additive Layer Manufacturing (ALM) is a future technology with 3D inkjet printing being one of them. The latter is based on the polymerization of a liquid dispensed into a powder bed. However, the special challenges which have to be met here are to increase product quality such as tensile strength and density on a repeatable base. Consequently multi-scale simulation models were developed to support material researchers as well as users of the technology in their daily work and therefore to contribute to process stability and material reliability of 3D printers and their products.
Templates for Consumer Use in Designing Customised Products
(2008-09-10) Ariadi, Y.; Rennie, A.E.W.
This research proposes a new design system for consumers who would use the product to run an easy-to-operate design and selection tool by themselves instead of conventional Computer Aided Design (CAD). In terms of manufacturing the product, several studies focus on involving the consumer as much and as early as possible. However, recent developments of Additive Layer Manufacturing (ALM) technologies have led to a renewed interest in allowing the consumers to develop customised products. As a result, manufacturing is being brought closer to consumers. This paper would simplify the CAD stages by utilising design templates for consumer use in customising additive layer manufactured products.