Journal ArticleDOI
Process parameters tuning and online re-slicing for robotized additive manufacturing of big plastic objects
TLDR
In this paper, a flexible additive manufacturing platform for big plastic objects has been realized mounting an industrial screw-based extruder on an anthropomorphic robot, with the aim of ensuring a regular deposited layer geometry.Abstract:
Complex parts can be successfully manufactured by means of Additive Manufacturing (AM) techniques based on thermoplastic polymer extrusion, whose use for mass production is restricted by their slow printing speed. To address this limitation, a flexible AM platform for big plastic objects has been realized mounting an industrial screw-based extruder on an anthropomorphic robot. An experimental campaign has been performed to set a suitable range of relevant process parameters, with the aim of ensuring a regular deposited layer geometry. Moreover, a closed-loop control strategy has been developed to correct the robot height based on data measured during the material deposition, thus further improving the process parameter setting and compensating the material shrinkage or other unexpected defects. Eventually, an online re-slicing algorithm has been implemented to preserve the desired height of the manufactured object, despite the layer height changes. The proposed approach allows a deposition flow rate up to 1250 cm3/h within a building volume limited only by the robot workspace.read more
Citations
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Journal ArticleDOI
The mechanical testing and performance analysis of polymer-fibre composites prepared through the additive manufacturing
Vigneshwaran Shanmugam,Deepak Joel Johnson Rajendran,Karthik Babu,Sundarakannan Rajendran,Arumugaprabu Veerasimman,Uthayakumar Marimuthu,Sunpreet Singh,Oisik Das,Rasoul Esmaeely Neisiany,Mikael S. Hedenqvist,Filippo Berto,Seeram Ramakrishna +11 more
TL;DR: In this article, a comprehensive review of the mechanical testing and performance analysis of polymer-fibre composites fabricated through AM, in particular fused deposition modelling (FDM), is presented.
Journal ArticleDOI
Online quality monitoring in material extrusion additive manufacturing processes based on laser scanning technology
TL;DR: Experimental studies show that the proposed method not only effectively identifies overfill and underfill defects but also accurately reconstructs the three-dimensional model of both types of defects.
Journal ArticleDOI
Process monitoring for material extrusion additive manufacturing: a state-of-the-art review
TL;DR: This literature review is the first to address process monitoring for material extrusion using a systematic and comprehensive approach and demonstrated that the research activity in this field has been gaining importance.
Journal ArticleDOI
Precise localization and semantic segmentation detection of printing conditions in fused filament fabrication technologies using machine learning
TL;DR: This advanced detection system is able to provide comprehensive defect information for real-time assessment and has great potential for further automated control as well as correction of additive manufacturing systems.
Journal ArticleDOI
Online Convolutional Neural Network-based anomaly detection and quality control for Fused Filament Fabrication process
Jiaqi Lyu,Souran Manoochehri +1 more
TL;DR: Two developed PID-based online closed-loop control systems are implemented which can significantly reduce the height deviation errors between the fabricated part measurements and design values, and correct the in-plane surface anomalies.
References
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BookDOI
Additive manufacturing technologies : 3D printing, rapid prototyping, and direct digital manufacturing
TL;DR: A conceptual overview of rapid prototyping and layered manufacturing is given, beginning with the fundamentals so that readers can get up to speed quickly as mentioned in this paper, with a broad range of technical questions to ensure comprehensive understanding of the concepts covered.
Journal ArticleDOI
Additive manufacturing: technology, applications and research needs
Nannan Guo,Ming-Chuan Leu +1 more
TL;DR: Additive manufacturing (AM) technology has been researched and developed for more than 20 years as mentioned in this paper, and significant progress has been made in the development and commercialization of new and innovative AM processes, as well as numerous practical applications in aerospace, automotive, biomedical, energy and other fields.
Book
Wohlers report 2013 : additive manufacturing and 3D printing state of the industry : annual worldwide progress report
Terry Wohlers,Tim Caffrey +1 more
Journal ArticleDOI
Critical parameters influencing the quality of prototypes in fused deposition modelling
TL;DR: In this paper, the influence of process parameters on the quality characteristics of the prototypes using Taguchi technique has been assessed and the results of the study and the conclusions arrived from it.
Journal ArticleDOI
Closed loop direct metal deposition : art to part
TL;DR: The methodology used to produce a designed macro- and microstructure is described and the state of the art for closed loop DMD is reviewed.