Perspective on 3D printing technologies
Jens Vinge Nygaard, Department of Engineering, AU
3D printing technologies originated in the 1980’ties when Computer Numerical Control (CNC) technologies was applied to materials processing allowing micrometer precision to the joining of materials. During the following decades and up to today numerous techniques on how to additively combine materials emerged. Typically, for a specific printing process the research, which follows, leads to a class of patents on material system used together with the process. During the 2010’ ties, the initial patents ran out and we have seen a large commercialisation of the initial technologies. This lead to awareness of the potential of these approaches to reduce the production time of advanced geometries, and to invent new smart materials (composites, structural graded materials). During my talk, I will elaborate on this technological development with the purpose of placing it in a SPOMAN context.
3D bioprinting from basic science to translation in the healthcare sector
Morten Østergaard Andersen, Institute of Chemical Engineering, Biotechnology and Environmental Technology, SDU Biotechnology
The potential for improving the healthcare sector with 3D printing is tremendous. We will present a number of different healthcare related projects wherein we have used 3D printing. One project concerns the 3D printing of brain tumor models for surgical preparation. Another concerns the development of a new 3D printing method for 3D printing electrical sensors. But most of the talk will concern the development of different types of bone implants that are made using a wide variety of 3D printing methods and materials. We will show how we make these patient fitted using a combination of CT-scanning, virtual reconstruction and 3D printing. We will discuss how we have taken this technology from inception through in vitro and mouse trials to a full scale test in pigs that replicates the eventual clinical case and how we intend to translate the technology clinically and commercially. We hope that the talk will spur a discussion about how 3D printing can revolutionize the healthcare and related sectors and on how to bring about that change.
Electrospinning and additive manufacturing: converging technologies
Menglin Chen, iNANO and Department of Engineering, AU
Additive manufacturing is a broad term for an increasing number of techniques such as fused deposition modeling, selected laser sintering, stereolithography and inkjet printing, in which complex structures are constructed in a layer-by-layer manner according to computer aided design. Electrospinning relies on an electrified viscous fluid (solution or melt) jet being drawn through the air towards a collector which is at a different electric potential. If there are sufficient molecular entanglements in the polymer, the jet does not break up into droplets due to Raleigh instabilities, and deposits continuously to create a non-woven mesh of fibers. In general, the limitations of AM include lower resolution fabrication limits, while electrospinning is unable to accurately reproduce 3D structures. Shortfalls within each technology could be solved by combining the two processing methods into one generic concept to design and fabricate structural morphologies down to submicron scale.
Additive Manufacturing – trends, challenges and cases from the Danish industry
Jeppe Skinnerup Byskov, Danish Technological Institute
Additive Manufacturing (AM) is a rapidly growing industry and AM has changed from mainly being a prototyping technology to an actual production method. However, a number of challenges are still to be resolved before a widespread use of AM is realistic. In this presentation I will present some of these challenges along with the current trends and furthermore discuss cases from the Danish manufacturing industry where the possibilities of AM has been utilized to create innovative products.