Evolution of Design Guidelines for Additive Manufacturing - Highlighting Achievements and Open Issues by Revisiting an Early SLM Aircraft Bracket

2017 ◽  
pp. 3-13 ◽  
Author(s):  
Christoph Klahn ◽  
Daniel Omidvarkarjan ◽  
Mirko Meboldt
Keyword(s):  
Additive Manufacturing ◽  
Design Guidelines ◽  
Open Issues

scholarly journals A STRUCTURED APPROACH TO REDUCE DESIGN ITERATIONS IN ADDITIVE MANUFACTURING

2021 ◽  
Vol 1 ◽  
pp. 231-240
Author(s):  
Laura Wirths ◽  
Matthias Bleckmann ◽  
Kristin Paetzold
Keyword(s):  
Additive Manufacturing ◽  
Spare Parts ◽  
Design Guidelines ◽  
Final Part ◽  
Layer By Layer ◽  
Powder Bed ◽  
Batch Sizes ◽  
Manufacturing Technologies ◽  
Structured Approach ◽  
Design Freedom

AbstractAdditive Manufacturing technologies are based on a layer-by-layer build-up. This offers the possibility to design complex geometries or to integrate functionalities in the part. Nevertheless, limitations given by the manufacturing process apply to the geometric design freedom. These limitations are often unknown due to a lack of knowledge of the cause-effect relationships of the process. Currently, this leads to many iterations until the final part fulfils its functionality. Particularly for small batch sizes, producing the part at the first attempt is very important. In this study, a structured approach to reduce the design iterations is presented. Therefore, the cause-effect relationships are systematically established and analysed in detail. Based on this knowledge, design guidelines can be derived. These guidelines consider process limitations and help to reduce the iterations for the final part production. In order to illustrate the approach, the spare parts production via laser powder bed fusion is used as an example.

Development of a Design for Additive Manufacturing Worksheet for Medical Casts

2021 ◽  
Author(s):  
Heena Noh ◽  
Kijung Park ◽  
Kiwon Park ◽  
Gül E. Okudan Kremer
Keyword(s):  
Additive Manufacturing ◽  
High Strength ◽  
Design Guidelines ◽  
Operational Performance ◽  
Design For Additive Manufacturing ◽  
Trade Offs ◽  
Novice Designers ◽  
Criteria Importance ◽  
Design For Am

Abstract Traditional plaster casts often cause dermatitis due to disadvantages in usability and wearability. Additive manufacturing (AM) can fabricate customized casts to have light-weight, high strength, and better air permeability. Although existing studies have provided design for additive manufacturing (DfAM) guidelines to facilitate design applications for AM, most relevant studies focused on the mechanical properties of outputs and too general/specific design guidelines; novice designers may still have difficulty understanding trade-offs between functional and operational performance of various DfAM aspects for medical casts. As a response, this study proposes a DfAM worksheet for medical casts to effectively guide novice designers. First, important DfAM criteria and their possible solutions for medical casts are examined through a literature review to construct a basic DfAM framework for medical casts. Next, a scoring system that considers relative criteria importance and criteria evaluation from both functional and operational perspectives is developed to identify the overall suitability of a medical cast design for AM. A case study of finger cast designs was performed to identify the DfAM performance of the sample designs along with redesign requirements suggested by the worksheet. The proposed worksheet would be used to achieve rapid medical cast design by objectively assessing its suitability for AM.

scholarly journals Information-Centric Networking (ICN)

2020 ◽  
Vol 12 (2) ◽  
pp. 35
Author(s):  
Nikos Fotiou
Keyword(s):  
Future Internet ◽  
Design Guidelines ◽  
Special Issue ◽  
Information Centric Networking ◽  
Research Directions ◽  
The World ◽  
Significant Research ◽  
New Research ◽  
The Internet Of Things ◽  
Open Issues

Information-Centric Networking (ICN) is novel paradigm considered for the future Internet, as well as for emerging architectures, such as the Internet of Things. Despite the significant research efforts that take place all around the world there are still many challenges and open issues related to the applicability of ICN. The papers of this special issue, six in total, identify such challenges, and propose solutions, design guidelines, and new research directions.

Design for Additive Manufacturing: Effectiveness of Unit Cell Design Guidelines As Ideation Tools

2019 ◽  
Author(s):  
I’Shea Boyd ◽  
Mohammad Fazelpour
Keyword(s):  
Additive Manufacturing ◽  
Effective Properties ◽  
Cellular Materials ◽  
Design Guidelines ◽  
Unit Cell ◽  
Cell Design ◽  
Recent Approach ◽  
Wide Range ◽  
Unit Cells ◽  
High Flexibility

Abstract The periodic cellular materials are comprised of repeatable unit cells. Due to outstanding effective properties of the periodic cellular materials such as high flexibility or high stiffness at low relative density, they have a wide range of applications in lightweight structures, crushing energy absorption, compliant structures, among others. Advancement in additive manufacturing has led to opportunities for making complex unit cells. A recent approach introduced four unit cell design guidelines and verified them through numerical simulation and user studies. The unit cell design guidelines aim to guide designers to re-design the shape or topology of a unit cell for a desired structural behavior. While the guidelines were identified as ideation tools, the effectiveness of the guidelines as ideation tools has not been fully investigated. To evaluate the effectiveness of the guidelines as ideation tools, four objective metrics have been considered: novelty, variety, quality, and quantity. The results of this study reveal that the unit cell design guidelines can be considered as ideation tools. The guidelines are effective in aiding engineers in creating novel unit cells with improved shear flexibility while maintaining the effective shear modulus.

Applicability of Snap Joint Design Guidelines for Additive Manufacturing

2021 ◽  
pp. 277-284
Author(s):  
Florian Schreiber ◽  
Thomas Lippok ◽  
Jan Uwe Bätzel ◽  
Martin Manns
Keyword(s):  
Additive Manufacturing ◽  
Design Guidelines ◽  
Joint Design

Towards a Numerical Approach of Finding Candidates for Additive Manufacturing-Enabled Part Consolidation

2018 ◽  
Vol 140 (4) ◽  
Author(s):  
Sheng Yang ◽  
Florian Santoro ◽  
Yaoyao Fiona Zhao
Keyword(s):  
Additive Manufacturing ◽  
Ad Hoc ◽  
Numerical Approach ◽  
Design Guidelines ◽  
Design Stage ◽  
Physical Interaction ◽  
Physical Attributes ◽  
Conflict Handling ◽  
Part Consolidation ◽  
Typical Design

Part consolidation (PC) is one of the typical design freedoms enabled by additive manufacturing (AM) processes. However, how to select potential candidates for PC is rarely discussed. This deficiency has hindered AM from wider applications in industry. Currently available design guidelines are based on obsolete heuristic rules provided for conventional manufacturing processes. This paper first revises these rules to take account of AM constraints and lifecycle factors so that efforts can be saved and used at the downstream detailed design stage. To automate the implementation of these revised rules, a numerical approach named PC candidate detection (PCCD) framework is proposed. This framework is comprised of two steps: construct functional and physical interaction (FPI) network and PCCD algorithm. FPI network is to abstractly represent the interaction relations between components as a graph whose nodes and edges have defined physical attributes. These attributes are taken as inputs for the PCCD algorithm to verify conformance to the revised rules. In this PCCD algorithm, verification sequence of rules, conflict handling, and the optimum grouping approach with the minimum part count are studied. Compared to manual ad hoc design practices, the proposed PCCD method shows promise in repeatability, retrievability, and efficiency. Two case studies of a throttle pedal and a tripod are presented to show the application and effectiveness of the proposed methods.

scholarly journals Maintenance in aeronautics in an Industry 4.0 context: The role of Augmented Reality and Additive Manufacturing

2019 ◽  
Vol 6 (4) ◽  
pp. 516-526 ◽  
Author(s):  
Alessandro Ceruti ◽  
Pier Marzocca ◽  
Alfredo Liverani ◽  
Cees Bil
Keyword(s):  
Additive Manufacturing ◽  
Augmented Reality ◽  
Case Studies ◽  
Industry 4.0 ◽  
Spare Parts ◽  
Regulatory Framework ◽  
Aviation Maintenance ◽  
Systems Maintenance ◽  
Manufacturing Technologies ◽  
Open Issues

Abstract The paper broadly addresses how Industry 4.0 program drivers will impact maintenance in aviation. Specifically, Industry 4.0 practices most suitable to aeronautical maintenance are selected, and a detailed exposure is provided. Advantages and open issues are widely discussed and case studies dealing with realistic scenarios are illustrated to support what has been proposed by authors. The attention has been oriented towards Augmented Reality and Additive Manufacturing technologies, which can support maintenance tasks and spare parts production, respectively. The intention is to demonstrate that Augmented Reality and Additive Manufacturing are viable tools in aviation maintenance, and while a strong effort is necessary to develop an appropriate regulatory framework, mandatory before the wide-spread introduction of these technologies in the aerospace systems maintenance process, there has been a great interest and pull from the industry sector. Highlights Industry 4.0 practices most suitable to aeronautical maintenance are selected. Advantages and open issues are widely discussed and case studies are illustrated. Augmented Reality can support maintenance tasks. Additive Manufacturing can be useful to produce spare parts. A strong effort is necessary to develop an appropriate aeronautical regulatory framework.

scholarly journals The Effect of Window-to-Wall Ratio (WWR) and Window Orientation (WO) on the Thermal Performance: A preliminary overview

2020 ◽  
Vol 5 (15) ◽  
pp. 165-173
Author(s):  
Abdullah Alsehail ◽  
Abdulbasit Almhafdy
Keyword(s):  
Thermal Performance ◽  
Publishing House ◽  
Environmental Variable ◽  
Design Guidelines ◽  
Research Directions ◽  
International Publishing ◽  
Design Factors ◽  
Window Design ◽  
Open Access Article ◽  
Open Issues

Sustainable aspects of buildings became one of the most crucial aspects of the built environment. The thermal performance can be improved through sustainable design guidelines and, thus, reduce energy consumption. This review covered studies that addressed Window Wall Ratio (WWR) and Window Orientation (WO) and their effect on thermal performance. WWR as a design variable that deals with window design, while the WO as an environmental variable that deals with orientation. The results will help to highlight open issues and research directions in the context of WWR, WO and integrations with other factors in buildings. Keywords: WWR, window design factors, Energy, WO eISSN: 2398-4287© 2020. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. DOI:

Nachbearbeitung additiv gefertigter Fräswerkzeuge/Exploiting the full potential by developing seamless process chains

2021 ◽  
Vol 111 (11-12) ◽  
pp. 818-823
Author(s):  
Tobias Kelliger ◽  
Christoph Zachert ◽  
Daniel Schraknepper ◽  
Thomas Bergs
Keyword(s):  
Additive Manufacturing ◽  
Cutting Tools ◽  
Design Guidelines ◽  
Full Potential ◽  
Process Chain ◽  
Post Processing ◽  
Additive Fertigung ◽  
Process Chains ◽  
Individual Design ◽  
Design And Production

Durch additive Fertigung können Zerspanwerkzeuge beanspruchungsgerecht und individuell designt und gefertigt werden. Um das volle ökonomische und ökologische Potenzial dieser Werkzeuge auszuschöpfen, ist eine übergreifende Prozesskettenbetrachtung von der Konstruktion über die Fertigung bis zur spanenden Nachbearbeitung nötig. Dabei müssen übergreifende Lösungen und Gestaltungsrichtlinien entwickelt werden.   Additive manufacturing enables an individual design and production of cutting tools that fulfills the requirements. However, the full economic and ecological potential can only be exploited by considering the entire process chain from design and production to post-processing. General solutions and design guidelines have to be developed.

Sign in / Sign up

Export Citation Format

Share Document