Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/87553
Title: Characterization of Titanium Lattice Structures Fabricated by Selective Laser Melting Using an Adapted Compressive Test Method
Authors: Sing, Swee Leong
Yeong, Wai Yee
Wiria, Florencia Edith
Tay, B. Y.
Keywords: Additive Manufacturing
3D Printing
Issue Date: 2016
Source: Sing, S. L., Yeong, W. Y., Wiria, F. E., & Tay, B. Y. (2016). Characterization of Titanium Lattice Structures Fabricated by Selective Laser Melting Using an Adapted Compressive Test Method. Experimental Mechanics, 56(5), 735–748.
Series/Report no.: Experimental Mechanics
Abstract: This paper investigates the effect of designs and process parameters on the dimensional accuracy and compressive behavior of cellular lattice structures fabricated using selective laser melting (SLM). Two unit cell types, square pyramid and truncated cube & octahedron from the Computer Aided System for Tissue Scaffolds (CASTS), an in-house developed library system were used. Powder adhesions occur on the struts of the lattice structures. The thickness of powder adhesion on the struts decreases with an increase in laser power or laser scan speed. The elastic constant in compression of the lattice structures increases with an increase in relative density, and ranged from 7.93 ± 2.73 MPa to 7.36 ± 0.26 GPa. Analysis of Variance (ANOVA) is also carried out to determine the significance of various process and design parameters on the dimensional accuracy and compressive strength of the lattice structures. The processing parameters, such as laser power and laser scan speed have no significant effect on the elastic constant but have a significant effect on the powder adhesion on the struts, which in turn, affects the dimensional accuracy. However, geometrical design parameters such as unit cell type and strut diameter have significant effects on the elastic constant but not dimensional accuracy of the lattice structures.
URI: https://hdl.handle.net/10356/87553
http://hdl.handle.net/10220/44489
ISSN: 0014-4851
DOI: 10.1007/s11340-015-0117-y
Rights: © 2018 Society for Experimental Mechanics.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles
SC3DP Journal Articles
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