TY  - JOUR
AB  - Purpose The purpose of this paper is to study the feasibility of the fabrication of circle arc curved-layered structures via conventional fused deposition modeling (FDM) with three-axis machines and to identify the main structural parameters that have an influence on their mechanical properties.Design/methodology/approach Customized G-codes were generated via a script developed in MATLAB. The G-codes contain nozzle trajectories with displacements in the three axes simultaneously. Using these, the samples were fabricated with different porosities, and their influence on the mechanical responses evaluated via tensile testing. The load-displacement curves were analyzed to understand the structure-property relationship.Findings Circled arc curved-layered structures were successfully fabricated with conventional three-axis FDM machines. The response of these curved lattice structures under tensile loads was mapped to three main stages and deformation mechanisms, namely, straightening, stretching and fracture. The micro-structure formed by the transverse filaments affect the first stage significantly and the other two minimally. The main parameters that affect the structural response were found to be the transverse filaments, as these could behave as hinges, allowing the slide/rotation of adjacent layers and making the structure more shear sensitive.Research limitations/implications This paper was restricted to arc-curved samples fabricated with conventional three-axis FDM machines.Originality/value The FDM fabrication of curved-structures with controlled porosity and their relation to the resulting mechanical properties is presented here for the first time. The study of curved-lattice structures is of great relevance in various areas, such as biomedical, architecture and aerospace.
VL  - 25
IS  - 5
SN  - 1355-2546
DO  - 10.1108/RPJ-11-2018-0286
UR  - https://doi.org/10.1108/RPJ-11-2018-0286
AU  - Cuan-Urquizo Enrique
AU  - Martínez-Magallanes Mario
AU  - Crespo-Sánchez Saúl E.
AU  - Gómez-Espinosa Alfonso
AU  - Olvera-Silva Oscar
AU  - Roman-Flores Armando
PY  - 2019
Y1  - 2019/01/01
TI  - Additive manufacturing and mechanical properties of lattice-curved structures
T2  - Rapid Prototyping Journal
PB  - Emerald Publishing Limited
SP  - 895
EP  - 903
Y2  - 2024/09/18
ER  -