A digital light processing 3D printer for fast and high-precision fabrication of soft pneumatic actuators

Pneutronic systems come with a series of advantages that are natural to working with compressed air, such as the large power/weight ratio of pneumatic actuators, easy and affordable installation and maintenance as well as being clean working systems. However, due to working with compressed air, there are a series of issues, such as static and transient nonlinear behavior, mostly due to the high compressibility of air. Thus, the behavior of such systems is hard to control, especially in terms of precision positioning. The paper deals with proposing three hardware configurations of pneutronic positioning systems in order to assure the imposed positioning accuracy in the presence of disturbances and the preservation in time of the obtained position.

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Implementation of Non-Destructive Evaluation and Process Monitoring in DLP-based Additive Manufacturing

Open Engineering ◽

10.1515/eng-2017-0016 ◽

2017 ◽

Vol 7 (1) ◽

pp. 100-105 ◽

Cited By ~ 1

Author(s):

Iaroslav Kovalenko ◽

Sylvain Verron ◽

Maryna Garan ◽

Jiří Šafka ◽

Michal Moučka

Keyword(s):

Control System ◽

Process Monitoring ◽

Continuous Measurement ◽

Adhesion Force ◽

3D Printer ◽

Digital Light Processing ◽

Non Destructive Evaluation ◽

The Moment ◽

Non Destructive

AbstractThis article describes a method of in-situ process monitoring in the digital light processing (DLP) 3D printer. It is based on the continuous measurement of the adhesion force between printing surface and bottom of a liquid resin bath. This method is suitable only for the bottom-up DPL printers. Control system compares the force at the moment of unsticking of printed layer from the bottom of the tank, when it has the largest value in printing cycle, with theoretical value. Implementation of suggested algorithm can make detection of faults during the printing process possible.

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The FDM 3D Printing Application for Orthopedic Splints

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.809-810.375 ◽

2015 ◽

Vol 809-810 ◽

pp. 375-380 ◽

Cited By ~ 1

Author(s):

Adriana Munteanu ◽

Dragos Chitariu ◽

Florentin Cioata

Keyword(s):

3D Printing ◽

High Precision ◽

Conceptual Models ◽

3D Printer ◽

Functional Testing ◽

Printing Technology ◽

Hand Prosthesis ◽

Engineering Models ◽

Easy Solution

The FDM technology is an easy solution when someone need freedom of design but with a high precision of manufacturing and so, one can built conceptual models or molds, engineering models, manufacturing tools, and functional testing prototypes. The problem addressed in this paper is to identify and investigate the possibility of design and the achieving sustainability of a temporary hand prosthesis used for supporting and immobilizing a broken bone. The research tries to highlight some common and distinct aspects specific to FDM printing technology. One of the objectives of this paper is to use the FDM technology in order to achieve a modern version of the classics splints or of the orthopedic cast. The prototype models proposed can be made vertically on a 3D printer with small motherboard and are easy to wear, attractive to children through its colors and can be made with a manufacturing low price.

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