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You say, this-south or that-east; you build directions into the language".
The aim of the work presented here was to evaluate and better understand crack propagation under constant amplitude loading in Ti-6Al-4V samanufacturedctusinguSLMg SLM with a variety of layer thicknesses and build directions (vertical or horizontal).
Modelling was performed with a conventional Linear Elastic Fracture Mechanics approach using literature data obtained from testing on Compact Tension (C(T)) specimens which were also in the as-manufactured condition with a variety of build directions.
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characterized the effects of varying build direction and raster orientation on the strength and stiffness of ABS fabricated by FDM.
Therefore, both build direction and in-plane raster directions are considered by the topology optimization algorithm, especially for the latter, which is calculated through deposition path planning.
Four different notch fatigue factors are estimated including the influence of notch direction with respect to build direction and the notch fabrication conditions.
The overall results clearly indicated anisotropy in the macroscale response due to raster orientation and build direction with respect to the load axis.
The greatest improvement in properties after heat treatment was demonstrated when the fracture plane is perpendicular to the SLM build direction.
Parameters, such as build direction and raster orientation, can be interdependent and exhibit varying effects on the properties of the ABS specimens.
The tensile strength and modulus, and elongation-at-break were found to be highly dependent upon the raster orientation and build direction.
Open image in new window Fig. 3 Material build direction 0/90 orientation Open image in new window Fig. 4 Experimental setup prior to testing Open image in new window Fig. 5 Experimental setup after testing.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com