Conference Agenda
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Agenda Overview |
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D225: PROCESS UNDERSTANDING AND CONTROL IN ADDITIVE MANUFACTURING
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Differential design through adhesive bonding of AM subcomponents University of the Bundeswehr Munich, Germany Part separation and subsequent adhesive bonding of additively manufactured (AM) subcomponents is a promising strategy to overcome manufacturing constraints and improve cost efficiency of AM processes. This study presents a three-dimensional scarf joint geometry, designed to maximize bond strength at a minimum use of substrate volume. Based on geometrical measurements, measures for improved accuracy of fit between PBF-LB/M substrates made of AlSi10Mg and Ti6Al4V were derived. Static tensile tests confirmed an almost twofold increase in bonding performance compared to conventional scarf joints. Understanding and controlling environmental effects in direct ink writing of upcycled biomaterials Delft University of Technology, The Netherlands This paper examines how ambient airflow, temperature, and humidity impact the print quality of upcycled biomaterials in Direct Ink Writing, and explores strategies for mitigation. A standardized pecan shell flour ink was used with optimized slicing parameters. Experiments in a controlled climate chamber involved sensor logging and statistical analysis. Airflow improved structural stability, overhang fidelity and bridging, but increased Z-axis shrinkage. Higher temperatures slightly improved bridging, while elevated humidity reduced stability and increased sagging, despite small bridging gains. Thermal process monitoring for layer adhesion by tracking nozzle position in material extrusion Norwegian University of Science and Technology, Norway We present a thermal process-monitoring system for MEX tracking layer temperature as a proxy for interlayer adhesion. Python-based hottest-point tracking by infrared thermography is implemented on a chamber-heated desktop printer to track nozzle movements and measure the temperature field millimeters ahead of deposition logging the results on a CSV file. We quantify accuracy versus camera distance (Δd=73mm) and probe radius (R2-R5). Where R3-R4 provided just a ΔRMSE of 1.52°C suggesting R3 as the optimal distance. The results can inform mechanical properties in load-bearing AM applications. Development and investigation of a new path-planning design for FLM-3D-printing to reduce anisotropy Engineering Design and Product Development, Faculty of Mechanical Engineering, TU Dortmund University, Germany Fused Layer Modeling (FLM) is one of the most popular additive manufacturing techniques. Its application is often limited caused by the procedurally anisotropy. This work addresses FLM’s weakness by examining a new path planning concept that replaces printing several adjacent parallel lines, for example in perimeters. The new technique was compared with conventionally manufactured reference samples in tensile tension and three-point-bending tests. The results show an improvement of the tensile strength in build direction of the samples by up to 40% and a reduction of anisotropy by 28%. | ||
