scholarly journals Polymeric Additive Manufacturing: The Necessity and Utility of Rheology

2018 ◽  
Author(s):  
Mohammed Elbadawi
Keyword(s):  
Additive Manufacturing ◽  
Polymeric Additive

Development of a gripper for garment handling designed for additive manufacturing

2019 ◽  
pp. 095440621985776
Author(s):  
Michal Jilich ◽  
Mattia Frascio ◽  
Massimiliano Avalle ◽  
Matteo Zoppi
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Acrylonitrile Butadiene Styrene ◽  
Cost Effective ◽  
Lower Number ◽  
Polybutylene Terephthalate ◽  
Design Validation ◽  
Polymeric Additive ◽  
Lower Complexity ◽  
Butadiene Styrene

The paper presents how a robotic gripper specific for grasping and handling of textiles and soft flexible layers can be miniaturized and improved by polymeric additive manufacturing-oriented re-design. Advantages of polymeric additive manufacturing are to allow a re-design of components with integrated functions, to be cost-effective equipment for small batches production and the availability of suitable materials for many applications. The drawback is that for design validation extended testing is still necessary because of lacks in standardization and that the mechanical properties are building parameters dependent. The outcomes are a lower complexity of the design overall and lower number of components. These are pursued taking advantage of the anisotropy of the additive manufacturing processed polymer and assigning appropriate shapes and linkages in the mechanisms. Set of common materials (polylactide, polyethylene terephthalate, acrylonitrile butadiene styrene) and technical (acrylonitrile styrene acrylate, polycarbonate/polybutylene terephthalate blend) are tested to obtain data for the modelling.

scholarly journals Review of Tailoring Methods for Joints with Additively Manufactured Adherends and Adhesives

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 3949
Author(s):  
Mattia Frascio ◽  
Eduardo André de Sousa Marques ◽  
Ricardo João Camilo Carbas ◽  
Lucas Filipe Martins da Silva ◽  
Margherita Monti ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Review Paper ◽  
State Of The Art ◽  
Manufacturing Processes ◽  
Bonded Joints ◽  
Design For Additive Manufacturing ◽  
Polymeric Additive ◽  
Current State ◽  
Bonded Joint ◽  
Current Modelling

This review aims to assess the current modelling and experimental achievements in the design for additive manufacturing of bonded joints, providing a summary of the current state of the art. To limit its scope, the document is focused only on polymeric additive manufacturing processes. As a result, this review paper contains a structured collection of the tailoring methods adopted for additively manufactured adherends and adhesives with the aim of maximizing bonded joint performance. The intent is, setting the state of the art, to produce an overview useful to identify the new opportunities provided by recent progresses in the design for additive manufacturing, additive manufacturing processes and materials’ developments.

Regeneration von Knochendefekten mit computergesteuerter Herstellung von Gerüstträgern

2013 ◽  
Vol 22 (03) ◽  
pp. 180-187 ◽  
Author(s):  
J. Henke ◽  
J. T. Schantz ◽  
D. W. Hutmacher
Keyword(s):  
Tissue Engineering ◽  
Additive Manufacturing ◽  
Custom Made

ZusammenfassungDie Behandlung ausgedehnter Knochen-defekte nach Traumata oder durch Tumoren stellt nach wie vor eine signifikante Heraus-forderung im klinischen Alltag dar. Aufgrund der bestehenden Limitationen aktueller Therapiestandards haben Knochen-Tissue-Engineering (TE)-Verfahren zunehmend an Bedeutung gewonnen. Die Entwicklung von Additive-Manufacturing (AM)-Verfahren hat dabei eine grundlegende Innovation ausgelöst: Durch AM lassen sich dreidimensionale Gerüstträger in einem computergestützten Schichtfür-Schicht-Verfahren aus digitalen 3D-Vorlagen erstellen. Wurden mittels AM zunächst nur Modelle zur haptischen Darstellung knöcherner Pathologika und zur Planung von Operationen hergestellt, so ist es mit der Entwicklung nun möglich, detaillierte Scaffoldstrukturen zur Tissue-Engineering-Anwendung im Knochen zu fabrizieren. Die umfassende Kontrolle der internen Scaffoldstruktur und der äußeren Scaffoldmaße erlaubt eine Custom-made-Anwendung mit auf den individuellen Knochendefekt und die entsprechenden (mechanischen etc.) Anforderungen abgestimmten Konstrukten. Ein zukünftiges Feld ist das automatisierte ultrastrukturelle Design von TE-Konstrukten aus Scaffold-Biomaterialien in Kombination mit lebenden Zellen und biologisch aktiven Wachstumsfaktoren zur Nachbildung natürlicher (knöcherner) Organstrukturen.

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