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In this edition of CrAMmed Iranian researchers present a new 3D printing technique named Selective Laser Baking; new types of 3D printed bone formation patterns are explored by Sichuan University; and the capabilities of additive manufacturing for apparel is explored by Manchester Metropolitan University.
“3D printing is an emergent technology which when combined with established textile processes offers the opportunity for a new method of textile production,” says Mark Beecroft, Senior Lecturer of Textiles in Practice at Manchester Metropolitan University (MMU).
Paper - Digital - Printing - Structures - Laser
In the paper “Digital interlooping: 3D printing of weft-knitted textile-based tubular structures using selective laser sintering of nylon powder” published in Taylor & Francis Online, Beecroft demonstrates the potential of 3D printed tubular textile-based structures. Said structures, manufactured on the EOS Formiga P110 SLS 3D printer, can compress and extend, which can be developed for various technical textiles sectors such as sportswear and healthcare.
Compressed, extended, stretched and folded 3D printed knit structures. Image via Beecroft.
University - Louisville - FDM/FFF - Printing - Professor
The University of Louisville has literally shaken up FDM/FFF 3D printing. Professor Keng Hsu and others from the University’s Department of Mechanical Engineering have explored the impact of ultrasonic vibrations on material extrusion in a study entitled “Effect of Ultrasonic Vibration on Interlayer Adhesion in Fused Filament Fabrication 3D Printed ABS” published in MDPI.
In doing this, the researchers sought to improve FDM/FFF 3D printing past rapid prototyping. The research states, “For the FFF process to advance into a manufacturing tool, its process and material characteristics, such as tolerance and accuracy, surface finish, as well as material property uniformity, need to reach a high level of maturity.”
Result - KHz - Vibrations - Printing - Team
As a result of 34.4 kHz ultrasonic vibrations during 3D printing, the team recognized a 10% increase in ABS layer adhesion compared to standard FFF 3D printing. This is attributed to polymer reptation – the thermal movement of entangled polymer chains –...
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