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Comparison of Cost, Material and Time Usage in FdM and SLS 3d Printing Methods 13

Comparison of Cost, Material and Time Usage in FDM and SLS 3...

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13th international conference on Perspective Technologies and Methods in MEMS design (MEMSTECH)

作者： Kudelski, Rafal Cieslik, Jacek Kulpa, Mykola dudek, Piotr Zagorski, Krzysztof Rumin, Rafal AGH Univ Sci & Technol Fac Mech Engn & Robot Al A Mickiewicza 30 PL-30059 Krakow Poland AGH Univ Sci & Technol Fac Management Al A Mickiewicza 30 PL-30059 Krakow Poland

ISBN: (纸本)9781538640012

additive manufacturing (AM) is the process of joining materials to make objects from Computer Aided design (CAd) model data, usually layer upon layer, as opposed to using subtractive manufacturing methods. The use of rapid prototyping technologies has increased significantly in recent years. This paper represents an attempt to answer the questions of when 3d printing can be used efficiently and of choosing the appropriate technology on the basis of batch size, element size, complexity, and time requirements.

关键词： additive manufacturing Fused deposition modeling Selective Laser Sintering cost time

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CONTRASTING FUNCTION WITH AFFORdANCE IN dESIGN FOR additive manufacturing

CONTRASTING FUNCTION WITH AFFORDANCE IN DESIGN FOR ADDITIVE ...

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ASME international design Engineering Technical conferences / Computers and Information in Engineering conference (IdETC/CIE 2017)

作者： Ko, Hyunwoong Moon, Seung Ki Nanyang Technol Univ Singapore Ctr 3D Printing Mech & Aerospace Engn 50 Nanyang Ave Singapore 639798 Singapore

ISBN: (纸本)9780791858110

additive manufacturing (AM)'s advance from rapid prototyping to the end-of-use products inevitably challenges conventional design theories and methodologies. Especially while adopting systematic engineering design methodologies to design for AM (dfAM), it is essential to develop new design methods that explore the new design space enabled by AM's design freedom from the early design stage. To address the challenge, this study provides a new design framework and a design method for modeling AM-enabled product behaviors in the conceptual design phase of dfAM. Firstly, this study contrasts function-based methods with affordance-based methods. The device-centric, form independent and input/output-based transformative properties of the function based methods such as function decompositions have strengths in modeling product's internal behaviors. However, the function-based methods show limitations in the new area of AM-enabled mass personalization which requires design approaches for representing user-centric structural design requirements acquired only by AM's design freedom. On the other hand, the affordance-based methods can address the function-based methods in dfAM due to their user-centric (artifact-user interactive), form. dependent and non-transformative properties. After the. contradiction, we propose an affordance-based dfAM framework and an affordance structure as a formal modeling technique for AM-enabled personalized product behaviors. A case study of a trans-tibial prosthesis socket provides an illustration in this study. The contribution of the study is in developing a design method for the conceptual design phase of dfAM that fulfills the objectives of achieving AM-enabled mass personalization with systematic engineering design approaches.

关键词： Affordance-based Method Conceptual design Phase design for additive manufacturing design for Mass Personalization Function-based Method

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Study, design and prototyping of arm splint with additive manufacturing process 2017

Study, design and prototyping of arm splint with additive ma...

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5th international conference on Technological Ecosystem for Enhancing Multiculturality, TEEM 2017

作者： Blaya, Fernando d'amato, RobertO. Pedro, Pilar San Juanes, Juan Antonio Lopez-Silva, JuliA. Lagándara, Juan Gomez Universidad Politécnica de Madrid Madrid28012 Spain Universidad de Salamanca Campus Miguel de Unamuno Salamanca37007 Spain

ISBN: (纸本)9781450353861

The aim1 of this study is to propose the additive manufactured 3d printed technique for adaptive organic design splint as a solution for the problems generated by the use of casts in medical applications. Since the end of the XVIII century, when casts begin to be used, they have barely improved. Thanks to new manufacture and material techniques, we can improve and modernize this commonly used fracture treatment method. Based on three dimensional digitalization techniques and modeling via reverse engineering software, a 3d printed splint is proposed, which will provide the benefits of cast avoiding its deficiencies. © 2017 Association for Computing Machinery.

关键词： 3d printers

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The Flexibility Controlling Study for 3d Printed Splint

The Flexibility Controlling Study for 3D Printed Splint

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conference on Nanosensors, Biosensors, Info-Tech Sensors and 3d systems

作者： Li, Jianyou Tanaka, Hiroya Keno Univ 5322 Endo Fujisawa Kanagawa Japan

ISBN: (纸本)9781510608191;9781510608207

The 3d printed splint's light weight, ventilation and water proof are considered as significant improvement for patients' comfortableness. Somehow, the flexible material is required in the splint to avoid skin friction may cased by its rigid edge, but this would increase the complexity and time-consuming. In this study, two main techniques to control the infilling densities and printing temperature are applied on printing splint prototype. The gradual increasing of infilling density from splint outside to inside would turn the partial strength from hard to flexible. Besides, higher printing temperature can also achieve stronger hardness after cooling. Such structural can provide high strength in outside surface to keep the immovable function, and give flexible touch of inside surface to decrease friction on the patient's skin.

关键词： Printing 3d printing Skin Fused deposition modeling Solids additive manufacturing prototyping Computer aided design Laser applications Sensors

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Non-contact reverse engineering modeling for additive manufacturing of down scaled cultural artefacts 10th

Non-contact reverse engineering modeling for additive manufa...

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10th CIRP international conference on Intelligent Computation in manufacturing Engineering (CIRP ICME)

作者： Segreto, Tiziana Bottillo, Alberto Teti, Roberto Galantucci, Luigi Maria Lavecchia, Fulvio Galantucci, Marianna Bianca Univ Naples Federico II Dept Chem Mat & Ind Prod Engn Piazzale Tecchio 80 I-80125 Naples Italy Fraunhofer Joint Lab Excellence Adv Prod Technol Naples Italy Politecn Bari Dipartimento Meccan Matemat & Management Viale Japigia 182 I-70126 Bari Italy Polishape 3D Srl Viale Japigia 182 I-70126 Bari Italy

In recent years, reverse engineering has achieved a relevant role in the cultural heritage field. The availability of 3d digital models of artefacts opens the door to a new era of cultural heritage: virtual museum creation, artefact cataloguing, conservation, planning and simulation of restoration, monitoring of artefacts subjected to environmental degradation, virtual reconstruction of damaged or missing parts, reproduction of replicas, etc. In this paper, two different non-contact reverse engineering scanning systems were utilized for 3d data acquisition of a cultural heritage artefact. The digital data acquisition and processing procedures of the scanned geometry have been illustrated and compared to evaluate the performance of both systems in terms of data acquisition time, processing time, reconstruction precision and final model quality. Finally, additive manufacturing technologies were applied to reconstruct a down scaled copy of the artefact. (C) 2017 The Authors. Published by Elsevier B.V.

关键词： Reverse engineering cultural heritage laser scanning photogrammetry additive manufacturing

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development of highly filled filaments for the additive manufacturing of ceramic and metal components

Development of highly filled filaments for the additive manu...

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MikroSystemTechnik Kongress 2017: MEMS, Mikroelektronik, Systeme - MikroSystemTechnik conference 2017: MEMS, Microelectronics, systems

作者： Nötzel, dorit Hanemann, Thomas Karlsruher Institut für Technologie Institut für Angewandte Materialien Hermann-von-Helmholtz-Platz 1 Eggenstein-Leopoldshafen76344 Germany Karlsruher Institut für Technologie Institut für Angewandte Materialien Hermannvon-Helmholtz-Platz 1 Eggenstein-Leopoldshafen76344 Germany Albert-Ludwigs-Universität Freiburg Institut für Mikrosystemtechnik Georges-Köhler-Allee 102 Freiburg79110 Germany

ISBN: (纸本)9783800744916

Since the development of the different rapid prototyping methods in 1984 nowadays additive manufacturing has been widely established in product design and engineering. due to the vehement progress and the enormous price decline in the last couple of years, suitable 3d-printers, e.g. following the FdM-principle (Fused deposition modeling) using thermoplast-based filaments, are commercially available at moderate costs and allowing structural features below 100 µm. In addition, low filler-load filaments enabling decorative surfaces or first functional elements are on market too. Within the frame of this work, a new process chain with the central goal of establishing FdM as suitable manufacturing method for ceramic and metal parts will be presented. © VdE VERLAG GMBH ∙ Berlin ∙ Offenbach

关键词： 3d printers

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Challenges in Processing digital and Physical Parts in additive manufacturing: An Exploration

Challenges in Processing Digital and Physical Parts in Addit...

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Portland international conference on Management of Engineering and Technology (PICMET)

作者： Morar, dominik Kemper, Hans-Georg Lasi, Heiner Univ Stuttgart Chair Informat Syst 1 Stuttgart Germany Steinbeis Stiftung Ferdinand Steinbeis Inst Stuttgart Germany

ISBN: (纸本)9781890843366

additive manufacturing (AM) - 3d printing for the purpose of industrial production - is known for enabling individualization and freedom of design. Furthermore, AM enables digital transformation in production through its highly digitized process, which often is simplified as directly printing a physical part from CAd data. The objective of this paper is to identify and describe requirements on Information systems based on the physical and digital objects of the AM process. Since AM is an uprising manufacturing technology, an exploratory research design is chosen based on semi-structured interviews in German enterprises. Firstly, the digital attributes of an AM part that are crucial to product quality need to be defined. Besides the geometry of an AM part, data from different AM process phases are crucial e.g. production parameters. Secondly, identification of parts and their virtual representations in different steps of the AM process becomes more relevant. In particular, multiple parts are often arranged in one build job for AM processing but should be traced individually. Thirdly, there is demand to digitally manage diverse manufacturing conditions of AM parts, since a part could be produced by several build jobs on different machines. Fourthly, the integration of AM into existing structures is a key challenge to manufacturers. These requirements will be addressed by an approach based on the Industry 4.0 reference architecture.

关键词： Solid modeling Industries Three-dimensional printing Information systems Collaboration

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Three-dimensional accuracy evaluation of two additive manufacturing processes in the production of dental models 7th

Three-dimensional accuracy evaluation of two additive manufa...

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7th international conference on Biomaterials, Tissue Engineering and Medical devices, BiomMedd 2016

作者： Alexandru-Victor, Burde Cristina, Gasparik Sorana, Baciu Marius, Manole diana, dudea Radu-Septimiu, Câmpian Department of Dental Propaedeutics and Esthetics Iuliu Haţieganu University 32 Clinicilor Street Cluj-NapocaRO-400006 Romania Department of Oral Rehabilitation Faculty of Dental Medicine Iuliu Haţieganu University 15 Victor Babeş str. Cluj-NapocaRO-400012 Romania

ISBN: (纸本)9783035711530

In the current orthodontic and prosthodontics practice, study models made of plaster are being used to provide a three-dimensional view of the patient's occlusion and allow the clinician to analyze, diagnose, or monitor anomalies. With the introduction of intraoral and extra oral digital impressions, it is now possible to obtain digital study models of the patients' dental arches. digital models can be obtained in a physical hardcopy via 3d printing or rapid prototyping. Although, professional 3d printers require a high initial set-up cost, low cost 3d printers can provide similar quality products. The aim of this study is to investigate the accuracy of physical dental models reconstructed from digital data by two rapid prototyping techniques. For this purpose twenty mandibular and maxillary conventional plaster models from randomly chosen subjects were selected and served as the gold standard. The casts were digitized using a 3d scanner and .stl surface models were acquired;the virtual model was adjusted for reconstruction using dedicated software, thus obtaining the CAd model of the casts. The CAd models were reconstructed using a 3d fused deposition modeling (FdM) printer, a RepRap FdM printer and an inverted stereolithography printer. The reconstructed models were digitized using a laboratory 3d scanner and the resulting Mesh datasets were compared with the CAd model using inspection software. The mean systematic differences for the 3d comparison of the reconstructed models were 0.207 mm for the stereolithography models, 0.156 mm for the FdM models, and 0.128 mm for the RepRap models. Although a technology proved the ability to manufacture a dental model with accentuated morphology, the results demonstrate that replicas of plaster casts are influenced by problems linked to the size of the detail to be reproduced, which is often similar to or finer than the fabrication layer. © 2017 Trans Tech Publications, Switzerland.

关键词： Stereolithography

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additive manufacturing in Finland: Recommendations for a Renewed Innovation Policy 16th

Additive Manufacturing in Finland: Recommendations for a Ren...

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16th Nordic Laser Materials Processing conference (NOLAMP)

作者： Ituarte, Inigo Flores Salmi, Mika Ballardini, Rosa Maria Tuomi, Jukka Partanen, Jouni Aalto Univ Dept Mech Engn Adv Prod Methods Espoo Finland Univ Lapland Fac Law Rovaniemi Finland

ISBN: (纸本)9781510848900

The objective of this research is to define an optimal innovation policy and funding strategy to improve additive manufacturing (AM) capabilities in Finnish companies. To do so, we present an international review of innovation programs in the area of AM. In addition, the study replied upon a survey prepared to evaluate factors for AM implementation. The ultimate goal is to help in the definition of a national policy strategy in the area of AM based on the characteristics of the Finnish industrial ecosystem. The methodology and data collection method involved defining the taxonomy of Finnish AM industry. The target group of the survey was a population of AM experts, and individuals with knowledge on AM and industrial processes. Overall, the survey revealed that research and innovation activities are well positioned in Finland. In order for future innovation policies to further support developments in the field, we estimated that policy strategies need to generate about 6-8 MC/year in national and EUfunding instruments for AM technology transfer, development, and innovation activities. Efforts should be targeted towards strengthening uses of AM in final production. In fact, only 36% of Finnish respondents declared to use AM for final production, while leading countries in AM use it in average more than 50%. Another area in need of development in Finland is the use of AM high performance materials. Moreover, outsourcing of AM services in Finland is 23 percentage point higher in national and 13 percentage point higher in international outsourcing to service bureaus and suppliers. In this regard, future policies and funding strategies should maintain the created momentum. However, there is a need to acquire high-end research and industrial equipment to stimulate AM integration to the existing production systems. This in the end can trigger the creation of new products, processes and intellectual property, enabling innovation and competitive advantage. (C) 2017 The Author

关键词： additive manufacturing 3d Printing Survey Innovation policy Technology applications Rapid prototyping Rapid manufacturing

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Model for describing Bioprinting Projects in STL 13th

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13th international conference on Information Technology - New Generations (ITNG)

作者： Valota Francisco, Luiz Angelo Trevelin, Luis Carlos Fed Inst Educ Sci & Technol Sao Paulo Sao Paulo Brazil Fed Univ Sao Carlos UFSCar Sao Carlos SP Brazil

ISBN: (纸本)9783319324678;9783319324661

The bioprinting is an essential element of biomanufacturing process and is an area of emerging and promising multidisciplinary research, which proposes the "manufacture" of tissues and organs by means of techniques and rapid prototyping capabilities, such as additive manufacturing. A model and a framework for the definition of projects that can be used in bioprinting living tissues and organs is set.

关键词： additive manufacturing Bioprinting Biomodel BioCAd Bioprinting modeling Stereolithography 3d printing

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