Shape memory polymers (SMPs) are a new class of materials that have the ability to change their shape over time. The use of SMP in three-dimensional (3D) printing has resulted in the development of a new concept called four-dimensional (4D) …
verfasst von:
Abbas Zolfaghari, Mohammad Reza Purrouhani, Ali Zolfagharian
Powder bed fusion of metals (PBF-LB/M) is currently the most widely adopted additive manufacturing technology for the fabrication of metal parts. However, the inconsistent quality of PBF-LB/M-manufactured parts and high costs for part …
verfasst von:
Marvin A. Spurek, Adriaan B. Spierings, Marc Lany, Bernard Revaz, Gilles Santi, Jonatan Wicht, Konrad Wegener
This study investigates and optimizes the tensile, flexural and compressive strengths of polymer parts for local and small industrial components. Extrusion-based additive manufacturing, i.e., fused deposition modeling (FDM) technology is used to …
Additive manufacturing (AM) holds remarkable potential for producing cellular materials with intricate structures and tailored mechanical properties. The study investigates the flexural fatigue behaviour of additively manufactured triply periodic …
There is a need to cost-effectively produce polymer components with meso/micro-scale internal geometries with high replication accuracy without the use of post-processing steps. A possible process chain to produce such polymer components with …
Precipitation hardened stainless steel, like 17-4PH SS, had received significant interest in various industries due to its high strength and corrosion resistance properties. This material may be produced with either traditional or modern …
verfasst von:
Hamid Eisazadeh, Sandeep Khadka, Xiaoqing Wang, Philip Yuya
This work aims to evaluate the impact of small amounts of hydrogen on the hydrogen-assisted cracking (HAC) of 17-4 martensitic stainless steel (SS) prepared by additive manufacturing (AM). To elucidate the effect of processing on the …
Nowadays, most of the commercial resins for VP are composed of (meth)acrylated urethanes, as they are cheap and provide good mechanical properties to the thermosets produced by their photocuring. However, such urethanes are still produced using …
Electron beam powder bed fusion (PBF-EB) is a known metal additive manufacturing (AM) technology. Processing non-conducting powders such as ceramics has so far been considered as not feasible because of the inherent problems with Coulomb repulsion …
verfasst von:
William Sjöström, Carlos Botero, Emilio Jimenez-Piqueo
Poly(lactic acid) (PLA) is a common material for fused deposition modeling (FDM), thanks to its affordability and biodegradability. However, modeling the behavior of 3D-printed PLA parts asks for an accurate material characterization. This paper …
verfasst von:
Morgane Domerg, Benjamin Ostre, Lénaïk Belec, Sophie Berlioz, Yoann Joliff, Yves-Henri Grunevald
The method of Directed Energy Deposition of polymers (DED-LB/P) was extended to allow control over the melt pool temperature using a pyrometer. DED-LB/P was used to build test specimen of polyamide 12 (PA12), orthogonal and parallel to the long …
verfasst von:
Yunus Kutlu, Adrian Vaghar, Marvin Schuleit, Magnus Thiele, Cemal Esen, Gerrit A. Luinstra, Andreas Ostendorf
As additive manufacturing of metals gains traction for demanding applications, more comprehensive material cards covering mechanical response across a broader spectrum of operating conditions are needed. The integration of additive manufacturing …
Solidification cracking (SC) is a defect that has been extensively studied in welding and casting and, consequently, standardized testing methods to quantify cracking have been developed for these processes. However, additive manufacturing (AM) …
This paper investigates the advancements and challenges in 3D printing, sintering, and hot isostatic pressing (HIP) of copper parts. It showcases the viability of employing bound powder copper feedstocks with a 61 vol.% loading, which undergo …
verfasst von:
Kameswara Pavan Kumar Ajjarapu, Carrie Barber, James Taylor, Thomas Pelletiers, Douglas Jackson, Chad Beamer, Sundar V. Atre, Kunal H. Kate
Improving the mechanical strength and fracture failure properties of polymer parts printed through material extrusion remains an ongoing challenge in polymer additive manufacturing. This work presents experimental investigation of fracture …
The aim of this investigation is to continue the numerous previous investigations into the selective laser melting (SLM) of the AlSi10Mg alloy while investigating the microstructural differences from the as-cast state in more detail and assessing …
Digital light processing (DLP) is the most widely used 3D molding technology in the medical industry. DLP machine developers aim at the interactive relationship between the forming separation force during layer-by-layer printing and mechanical …
Industrial organizations are increasingly adopting computer-aided manufacturing (CAM) and computer-aided design (CAD) tools to streamline manufacturing and product design processes, reducing time and costs. However, the area of 3D computer-aided …
In recent years, additive manufacturing (AM) techniques have gained increased attention. The most common AM technologies to realize complex parts are powder bed-based fusion processes, especially electron beam powder bed fusion of metals …
This paper presents a comprehensive review of the transformative impact of additive manufacturing on the fabrication of gas separation membranes, specifically focusing on its application in carbon dioxide separation. Additive manufacturing allows …
verfasst von:
Ying Huay Cheong, Li Sze Lai, Linggao Shi, Swee Pin Yeap, Yin Fong Yeong, Wee Horng Tay, Zeinab Abbas Jawad