Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

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Session Overview
Session
D325: ADVANCES IN QUALITY AND PERFORMANCE BENCHMARKS IN ADDITIVE MANUFACTURING
Time:
Wednesday, 22/May/2024:
10:45am - 12:30pm

Session Chair: Yuri Borgianni, Free University of Bozen|Bolzano, Italy
Location: Congress Hall Konavle


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Presentations

Additively manufactured 3D micro scarf adhesive joints

Michael Ascher, Ralf Späth

Bundeswehr University Munich, Germany

Hybrid manufacturing enables to overcome additive manufacturing (AM) constraints regarding the maximum feasible part dimension and/or complexity through part separation and subsequent adhesive joining of AM sub-parts. To ensure structural integrity of the joint at a minimum use of substrate volume, the AM inherent freedom of design can be exploited by realizing 3D micro scarf adhesive joints. The performance of this novel adhesive joint design was assessed by conducting optical measurements and static tensile tests using samples fabricated by laser-based powder bed fusion of metals (PBF-LB/M).



The energy performance assessment method to establish the best part build orientation in additive manufacturing

Marco Mandolini1, Mikhailo Sartini1, Marta Rossi2, Claudio Favi3, Marco Marconi4

1Università Politecnica delle Marche, Italy; 2Università degli Studi eCampus, Italy; 3Università degli studi di Parma, Italy; 4Università degli Studi della Tuscia, Italy

The growing use of additive manufacturing (AM) processes pushes research towards studying methods to reduce their environmental impact. The part build orientation is a significant process variable, which can be chosen through the Energy Performance Assessment (EPA), a straightforward method. The paper presents a method for identifying the best part build orientation considering energy consumption. The EPA has been adapted for this purpose, resulting in an approach based on four steps. The method was employed to determine the best printing direction for three parts and two AM technologies.



Democratising dry adhesion development with consumer-grade AM

Vegar Stubberud, Martin Steinert, Håkon Jarand Dugstad Johnsen

Norwegian University of Science and Technology, Norway

The production of reusable gecko-inspired dry adhesives has traditionally been done with complex nanofabrication methods such as lithography and PDMS casting. This article presents a way of producing and testing dry adhesive samples using consumer-grade AM machines and equipment typically available in a Makerspace. The samples produced exhibit adhesive properties depending on the preload and surface structure, and we conclude that consumer-grade AM is suitable for rapid prototyping and testing of dry adhesion. However, it is limited by the scale and accuracy compared to traditional methods.



Play well, print well: using LEGO bricks as an intuitive benchmarking tool for 3D printers

Alan Air1,2, Andrew Wodehouse1

1University of Strathclyde, United Kingdom; 2National Manufacturing Institute of Scotland, United Kingdom

In 3D printing, calibration is crucial for accurate prints, particularly those with complex or intricate features. This paper focuses on developing, manufacturing, and testing a benchmarking model to assess the dimensional accuracy of 3D printers. The aim is to evaluate the 3D printed model against a universally recognized real-world equivalent – a LEGO® brick – using its interlock function as a test with an engaging element. An interlock benchmarking framework aids further analysis of the model's performance, and a checklist for the model is provided for additional visual analysis.



Printing study and design guideline for small hollow structures in medical technology

Eve Sobirey, Marie Wegner, Fabian Niklas Laukotka, Dieter Krause

Hamburg University of Technology, Germany

In recent years, interest in additive manufacturing has increased. To overcome challenges such as the correct use of the technology, guidelines are needed to help the user in the fabrication process. However, such guidance is not currently available for all applications. This paper dives into design methods in AM and their transfer to an application example in the field of medical technology. The aim of this paper is to analyse the transferability of a design method for vessel models to small vessel models. To this end, an initial printing study is carried out on simplified hollow structures.



 
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