Investigating the Impacts of Heterogeneous Infills on Structural Strength of 3D Printed Parts

Abstract:

Additive Manufacturing is a manufacturing process based on layers for making three dimensional scaled physical parts directly from 3D CAD data. Fused Deposition Modeling (FDM) is widely used technology that provides functional prototypes in various thermoplastics. In additive manufacturing, filling patterns are of two types; External and Internal filling patterns. Multiple patterns are developed for both filling categories. In this work, a heterogeneous infill strategy is used by choosing developed patterns in order to improve strength to weight ratio, material usage and build time for parts. A rectilinear pattern combination with triangular and rectangular pattern has been chosen for 3D printing. The tensile testing is performed on the printed specimens to calculate the strength to weight ratio. By comparing the obtained results, a strategy based on maximum strength to weight ratio, minimum material usage and reduced build time is recommended for FDM technology.

• Periodical: Key Engineering Materials (Volume 799)
• Pages: 276-281
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.799.276
• Online since: April 2019
• Authors: Ramisha Sajjad, Sajid Ullah Butt, Khalid Mahmood, Hasan Aftab Saeed
• Keywords: 3D Printing, Additive Manufacturing, Fused Deposition Modeling (FDM) FEA, Infill Patterns

References

[1] Gu, D. (2015). Laser Additive Manufacturing of High-Performance Materials. New York Dordrecht London: Springer.

[2] D T Pham, R. S. (1998). A comparison of rapid prototyping Technologies. Int J Mach Tools Manuf 38 (10-11) , 1257-1287.

[3] Ian Gibson, D. R. (2010). Additive Manufacturing Technologies 3D Printing, Rapid Prototyping and Direct Digital Manufacturing. New York Dordrecht London: Springer Science & Business Media.

DOI: 10.1007/978-1-4939-2113-3

[4] Information on http://www.stratasys.com.

[5] Information on https://www.tth.com/3d-printing/fdm-prototyping.

[6] Yuan Jin, Y. H. (2016). Process Planning for the Fuse Deposition Modeling of Ankle Foot Orthoses. 18th CIRP Conference on Electro Physical and Chemical Machining, 760-765, ELSEVIER.

DOI: 10.1016/j.procir.2016.02.315

[7] Choi S, C. H. (2006). A topological hierarchy-based approach to toolpath planning for multi material layered manufacturing. Computer Aided Design, 38:143-56.

DOI: 10.1016/j.cad.2005.08.005

[8] Jin Y, H. Y. (2014). Optimization of tool-path generation for material extrusion-based additive manufacturing technology. Additive Manufacturing, 1:32-47.

DOI: 10.1016/j.addma.2014.08.004

[9] Information on https://www.3dhubs.com.

[10] Umair Ali Rana, D. S. (2015). Development of design methodology for biomimetic adaptive infills for additive manufacturing. Rawalpindi: CEME, NUST.

[11] Hodgson, G. (2013). Slic3r User Manual. Free Software Folks.

[12] Information on https://ultimaker.com/en/resources/20416-infill.

[13] Yong Huang, M. L. (2015). Additive Manufacturing: Current State, Future Potential, Gaps and Needs, and Recommendations. Journal of Manufacturing Science and Engineering.

DOI: 10.1115/1.4028725

[14] Yuan Jin, Y. H. (2017). A non-retraction path planning approach for extrusion based additive manufacturing. Robotics and Computer Integrated Manufacturing 48, 132-44.

DOI: 10.1016/j.rcim.2017.03.008

[15] Hao L., R. D. (2010). Enhancing the sustainability of additive manufacturing. International Conference on Responsive Manufacturing-Green Manufacturing, 390-5.

DOI: 10.1049/cp.2010.0462

[16] Yuan Jin, J. D. (2017). Optimization of process planning for reducing material consumption in Additive Manufacturing. Journal of Manufacturing Systems 44, 65–78.

DOI: 10.1016/j.jmsy.2017.05.003

[17] Yuan Jin, Y. H. (2017). A novel path planning methodology for extrusion based additive manufacturing of thin walled parts. International Journal of Computer Integrated Manufacturing.

DOI: 10.1080/0951192x.2017.1307526

[18] F. Roger, (2015). Optimal design of fused deposition modeling structure using comsol Multiphysics. Proceedings of the 2015 COMSOL conference, Grenoble.