Parametric process optimization to improve the accuracy and mechanical properties of 3D printed parts
- PDF / 1,313,904 Bytes
- 10 Pages / 432 x 648 pts Page_size
- 97 Downloads / 184 Views
Parametric process optimization to improve the accuracy and mechanical properties of 3D printed parts Amirhossein Hakamivalaa, Amirali Nojoomib, Alieh Aminianc,*, Arghavan Farzadid, Noor Azuan Abu Osmane a
Department of Bioengineering, University of Texas at Arlington, Arlington, Texas, United States
b Department of Materials Science and Engineering, University of Texas at Arlington Arlington, Texas, United States
c
BEGO Implant Systems GmbH & Co. KG, Department of Research and Development, Bremen, Germany
d
e
Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, United States
Department of Biomedical Engineering, University of Malaya, Kuala Lumpur, Malaysia
*Alieh Aminian BEGO Implant Systems GmbH & Co. KG, Department of Research and Development, Bremen, Germany. Email: [email protected]
ABSTRACT
Investigating the mechanical properties and dimensional accuracy of 3D printed parts is an important step towards achieving optimum printing conditions. This condition, which leads to the fabrication of parts with appropriate mechanical properties and accuracy, is achieved by studying the effect of different process parameters on the final structure. In this work, Response Surface Methodology (RSM) was employed to design specified experiments to investigate the effects of layer thickness, printing orientation and delay, on the compressive
Downloaded from https://www.cambridge.org/core. University of Warwick, on 02 Jan 2019 at 01:59:46, subject to the Cambridge Core terms of use, available at https://www.cambridge.org/core/terms. https://doi.org/10.1557/adv.2018.647
strength and dimensional error of the parts. The results show that an increase in the delay time in X orientation results in better binder spreading and uniformity followed by improvement in the compression strength. Furthermore, more binder spreads in the vertical direction leads to the higher dimensional error in the Z direction. The results proved that the RSM provides a time and cost-efficient design to print the prototypes with optimum strength and dimensional error.
INTRODUCTION There are several types of Rapid prototyping (RP) techniques to polymeric, metallic or ceramic parts with varying densities and porosities. Many of these methods involve building parts through melting or welding processes to make and fuse each layer together. Binder Jetting as a method that avoids thermal residual stress during fabrication by employing liquid binder instead of heat, is gaining attention in recent years. Binder Jetting is an RP process in which powder particles join by the selectively deposited liquid binding agent to form a specific 2D pattern. These 2D layers are then bonded to form a 3D object. Since, in this method only the binder, which includes a small portion of the final part, is being deposited during fabrication, the manufacturing speed is outperforming other processes. Also, the ability to use a variety of powders and making objects without the need for sacrificial supporting structures have made this m
Data Loading...
