Current methods for rapid prototyping of composite products, applied by a computer during manufacturing, allow for materializing even the most complex 3D objects created in a CAD application in a very short time and without any subsequent processing. After determining the validity of a designed prototype, it can be physically implemented using standard methods or tools for plastic injection molding. This paper presents application of commercial CAD programming packages in modelling 3D objects for rapid implementation of composite prototypes using layer-by-layer method. This specific method, in which the shape of the product is built by adding, instead of separation or deformation of materials, offers a number of advantages over other similar methods. Amongst the most prominent ones are producing parts directly from a file, reduced processing and operation planning time, process implementation without the use of tools, reduced production cost, increased product quality, improved design, faster audit and product review. This method slowly gives way to the process of 3D printing, which, according to some indicators, being current job in the next 20 years. [ABSTRACT FROM AUTHOR]
The article offers information on the benefits of additive manufacturing, three-dimensional (3D) printing, and rapid prototyping in manufacturing products. Topics discussed include the use of fused deposition modeling in additive manufacturing, the use of computer-aided design (CAD) software to design the products to be manufactured, and the use of low durometer silicone in producing parts with negative draft.
International Journal of Production Research. May2016, Vol. 54 Issue 10, p3118-3132. 15p. 7 Diagrams, 1 Chart.
RAPID prototyping, TREND analysis in business, PROTOTYPES, TECHNOLOGICAL innovations, MANUFACTURING processes, and THREE-dimensional printing
The rapid prototyping has been developed from the 1980s to produce models and prototypes until the technologies evolution today. Nowadays, these technologies have other names such as 3D printing or additive manufacturing, and so forth, but they all have the same origins from rapid prototyping. The design and manufacturing process stood the same until new requirements such as a better integration on production line, a largest series of manufacturing or the reduce weight of products due to heavy costs of machines and materials. The ability to produce complex geometries allows proposing of design and manufacturing solutions in the industrial field in order to be ever more effective. The additive manufacturing (AM) technology develops rapidly with news solutions and markets which sometimes need to demonstrate their reliability. The community needs to survey some evolutions such as the new exchange format, the faster 3D printing systems, the advanced numerical simulation or the emergence of new use. This review is addressed to persons who wish have a global view on the AM and improve their understanding. We propose to review the different AM technologies and the new trends to get a global overview through the engineering and manufacturing process. This article describes the engineering and manufacturing cycle with the 3D model management and the most recent technologies from the evolution of additive manufacturing. Finally, the use of AM resulted in new trends that are exposed below with the description of some new economic activities. [ABSTRACT FROM AUTHOR]
RAPID prototyping, MANUFACTURING processes, THREE-dimensional printing, and STEREOLITHOGRAPHY
The article focuses on rapid prototyping services along with its significance in designing approaches. Topics discussed include enhancement of manufacturing process with deployment of rapid prototype conditions; consideration of 3D printing technology in different processes such as stereo lithography; and attainment of regulatory approval by several agencies such as the U.S. Food & Drug Administration (FDA).
RAPID prototyping, GEARING, THREE-dimensional printing, GEARBOXES, and HELICAL gears
The article provides information on possibilities of different types of gear in prototyping and their role in our everyday life. Topics discussed include gears like straight cut spur, helical, and alternative gear trains; harvesting of gears from another product, and requirement for 3D printing and custom gearing.
RAPID prototyping, TECHNOLOGICAL innovations, MANUFACTURING processes, THREE-dimensional printing, 3-D printers, and DIGITAL printing
The article focuses on the evolution and improvements on 3D printer, one of the most important tools for product development as it helps prototypers build parts in a matter of hours, when machining or molding can take days or weeks. Information on some of the innovations include high-performance filaments, multi-material printing, and metal printing.
RAPID prototyping, INJECTION molding, THERMOPLASTICS, SILICONE rubber, NUMERICAL control of machine tools, and THREE-dimensional printing
The article focuses on digital manufacturing model is accelerating from rapid prototypes and first-run production parts to "on-demand" short-run manufacturing with injection molding services. It mentions one-demand injection molding of thermoplastics and silicone rubber outpaced its prototyping business for the first time. It also mentions new processes within injection molding and computerized numerical control (CNC) machining with additive manufacturing.
RAPID prototyping, CULTURAL property, THREE-dimensional printing, COMPUTATIONAL geometry, and STEREOLITHOGRAPHY
Digital fabrication devices exploit basic technologies in order to create tangible reproductions of 3D digital models. Although current 3D printing pipelines still suffer from several restrictions, accuracy in reproduction has reached an excellent level. The manufacturing industry has been the main domain of 3D printing applications over the last decade. Digital fabrication techniques have also been demonstrated to be effective in many other contexts, including the consumer domain. The Cultural Heritage is one of the new application contexts and is an ideal domain to test the flexibility and quality of this new technology. This survey overviews the various fabrication technologies, discussing their strengths, limitations and costs. Various successful uses of 3D printing in the Cultural Heritage are analysed, which should also be useful for other application contexts. We review works that have attempted to extend fabrication technologies in order to deal with the specific issues in the use of digital fabrication in the Cultural Heritage. Finally, we also propose areas for future research. [ABSTRACT FROM AUTHOR]
The article reports on the development of additive manufacturing, more commonly known as three-dimensional (3D) printing. It is said that additive manufacturing is increasingly used to produce parts with greater speed, improved economics and performance. Earlier, additive manufacturing was primarily used to make prototypes of new products.
The article focuses on additive manufacturing (AM) or also known as three-dimensional (3D) printing as an alternative for rapid prototyping. It says that AM is use in stereo lithography and selective laser sintering wherein the shape defined by computer-aided design (CAD) is achieved through deposition of various materials and use of lasers to fuse the layers. It mentions the increase trend of using bonded sand as build material.
We present an interactive design system for designing free-formed bamboo-copters, where novices can easily design free-formed, even asymmetric bamboo-copters that successfully fly. The designed bamboo-copters can be fabricated using digital fabrication equipment, such as a laser cutter. Our system provides two useful functions for facilitating this design activity. First, it visualizes a simulated flight trajectory of the current bamboo-copter design, which is updated in real time during the user's editing. Second, it provides an optimization function that automatically tweaks the current bamboo-copter design such that the spin quality—how stably it spins—and the flight quality—how high and long it flies—are enhanced. To enable these functions, we present non-trivial extensions over existing techniques for designing free-formed model airplanes [UKSI14], including a wing discretization method tailored to free-formed bamboo-copters and an optimization scheme for achieving stable bamboo-copters considering both spin and flight qualities. [ABSTRACT FROM AUTHOR]
RAPID prototyping, MASS production, THREE-dimensional printing, 3-D printers, and THERMOPLASTIC composites
The article reports that AREVO has appointed AGC Inc. as its strategic manufacturing partner in Japan. It mentions that the firm will provide MaaS for the on-demand production of ultra-strong, lightweight three-dimensional-printed composite parts for the Japanese market. It also mentions the comments of Hemant Bheda, Co-Founder and Chairman of AREVO.
RAPID prototyping, THREE-dimensional printing, 3-D printers, COMPUTER graphics, and COMPUTER art
We present a pipeline of algorithms that decomposes a given polygon model into parts such that each part can be 3D printed with high (outer) surface quality. For this we exploit the fact that most 3D printing technologies have an anisotropic resolution and hence the surface smoothness varies significantly with the orientation of the surface. Our pipeline starts by segmenting the input surface into patches such that their normals can be aligned perpendicularly to the printing direction. A 3D Voronoi diagram is computed such that the intersections of the Voronoi cells with the surface approximate these surface patches. The intersections of the Voronoi cells with the input model's volume then provide an initial decomposition. We further present an algorithm to compute an assembly order for the parts and generate connectors between them. A post processing step further optimizes the seams between segments to improve the visual quality. We run our pipeline on a wide range of 3D models and experimentally evaluate the obtained improvements in terms of numerical, visual, and haptic quality. [ABSTRACT FROM AUTHOR]
RAPID prototyping, THREE-dimensional printing, POLYMERS, PHOTOPOLYMERS, and ELASTOMERS
The article discusses several aspects of prototyping with PolyJet three-dimensional (3D) printing. It mentions PolyJet has the ability to mimic various polymers, including LSR (liquid silicone rubber). It also mentions PolyJet uses a jetting process where small droplets of liquid photopolymer, called voxels, are sprayed from multiple jets onto a build platform and cured in layers that form elastomeric part.
RAPID prototyping, ENERGY consumption, THREE-dimensional printing, SUSTAINABILITY, and STEREOLITHOGRAPHY
Additive manufacturing (AM), also referred as three-dimensional printing or rapid prototyping, has been implemented in various areas as one of the most promising new manufacturing technologies in the past three decades. In addition to the growing public interest in developing AM into a potential mainstream manufacturing approach, increasing concerns on environmental sustainability, especially on energy consumption, have been presented. To date, research efforts have been dedicated to quantitatively measuring and analyzing the energy consumption of AM processes. Such efforts only covered partial types of AM processes and explored inadequate factors that might influence the energy consumption. In addition, energy consumption modeling for AM processes has not been comprehensively studied. To fill the research gap, this article presents a mathematical model for the energy consumption of stereolithography (SLA)-based processes. To validate the mathematical model, experiments are conducted to measure the real energy consumption from an SLA-based AM machine. The design of experiments method is adopted to examine the impacts of different parameters and their potential interactions on the overall energy consumption. For the purpose of minimization of the total energy consumption, a response optimization method is used to identify the optimal combination of parameters. The surface quality of the product built using a set of optimal parameters is obtained and compared with parts built with different parameter combinations. The comparison results show that the overall energy consumption from SLA-based AM processes can be significantly reduced through optimal parameter setting, without observable product quality decay. [ABSTRACT FROM AUTHOR]
The continued expansion of additive manufacturing (AM) techniques, evolving from its initial role as a rapid prototyping method, toward effective resources for generating final products, is reshaping the production sector and its needs. The development of systematic methodologies for the generation of mechanically optimized support structures for AM processes is an important issue which impacts the eco-efficiency and quality of final parts. The shift from regular lattice support structures and complex support meshes, toward bioinspired support structures, using, for instance, tree-like and fractal geometries, may provide feasible solutions with optimal ratios between mechanical performance and quantity of material used. In a similar way as biomimetics has provided revolutionary solutions to fields including architecture, mechanical engineering, and civil engineering, it may well impact the field of solid freeform fabrication. The possibilities relate not just to aspects related to part geometries and final applications (as is already happening), but also in manufacturing challenges such as the problem of obtaining eco-efficient and reliable supports. In this article, we summarize a recently developed methodology, in the framework of the European Union (EU) 'ToMax' Project, for the generation of bioinspired fractal or tree-like support structures and provide six application examples, starting with very simple geometries and generalizing the process for more complex parts. Eco-efficiency is assessed by a final comparative study using support structures generated with conventional software. [ABSTRACT FROM AUTHOR]
RAPID prototyping, PRODUCT design, THREE-dimensional printing, DESIGN education, and DESIGN research
Design for Additive Manufacturing (DfAM) is a growing field of enquiry. Over the past few years, the scientific community has begun to explore this topic to provide a basis for supporting professional design practice. However, current knowledge is still largely fragmented, difficult to access and inconsistent in language and presentation. This paper seeks to collate and organise this dispersed but growing body of knowledge, using a single and coherent conceptual framework. The framework is based on a generic design process model and consists of five parts: Conceptual design, Embodiment design, Detail design and Process planning and Process selection. 81 articles on DfAM are mapped onto the framework to provide, for the first time, a clear summary of the state of the art across the whole design process. Nine directions for the future of DfAM research are then proposed. [ABSTRACT FROM AUTHOR]