Author
Gülcan, O., Şimşek, U., Özdemir, Mirhan, Günaydın, K., Tekoğlu, E.
Publication Date
2023
Publication Place
-
Gazi University
Subject
Build orientation, Lattice structures, Powder bed fusion, Taguchi method, Volume fraction
Type
Periodical
Language
Turkish
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1300-1884
Record ID
9cf387d9-d773-42b9-bd0a-c2b5f127d8db
Date
2023
Sample Text
Cage structures are used due to their high heat transfer ability, energy absorption and sound insulation properties.
It is used in many areas, especially in the aviation, automotive and biomedical industries. cage
Different process and geometric parameters are effective on these capabilities of the structures. different
In industrial applications, the relevant cage structure is used with appropriate process and geometric parameters.
It is a known fact that its use will increase the efficiency obtained as a result of the application. This work, Taguchi
Using experimental design, in lattice structures, the type of lattice structure, construction direction and volume ratio are affected by production.
then examine the effects of distortion on the part, surface roughness and wall thickness change.
focused on experimental investigation. Laser powder bed fusion method and CoCrMo material for production
has been used. Effect of each parameter on warpage, surface roughness and wall thickness variation
and the optimum parameter set was found by analysis of variables (ANOVA) method. Surface roughness
The most optimum parameter set for the diamond lattice structure was determined as 0.2 volume ratio and 90o construction direction.
The most optimum parameter set for the change in wall thickness is the gyroid lattice structure, 0.4 volume ratio and 45o.
This experimental study focuses on investigating the effect of lattice structure type, build direction and volume fraction on distortion, surface roughness and wall thickness deviation of lattice structures based on Taguchi design of experiment. Laser powder bed fusion process and CoCrMo material were used for production. The effect of each parameter on distortion, surface roughness and wall thickness deviation, and optimum parameter set were found by analysis of variance (ANOVA) method (Figure Presented). Purpose: The purpose of this study is to investigate the effect of volume fraction, lattice type and build orientation on dimensional deviation, surface roughness and ligament thickness variation of CoCrMo samples produced by laser powder bed fusion method. Theory and Methods: Taguchi design of experiment was used in the experiments. Specimens were produced from CoCrMo material by laser powder bed fusion method. Produced specimens were scanned with bluelight and Alicona to measure dimensional deviations and surface roughness. ANOVA analyzes were performed to determine the effect of parameters on performance characteristics. Results: Diamond specimens outperformed when compared with gyroid and primitive specimens in terms of dimensional deviations and surface roughness. For side surfaces, lattice type was found to be the most effective parameter on dimensional deviation and volume fraction was found to be the most effective parameter on surface roughness. Conclusion: In terms of dimensional deviations and surface roughness, diamond specimen with build orientation as much parallel as build orientation need to be used. Primitive and gyroid specimens showed the highest dimensional deviation and surface roughness results. It was observed that there is an indirect correlation between build direction and distortion and surface roughness. Build direction was found to be the most effective parameter on ligament thickness deviation. The deviation between designed and produced ligament thicknesses decreased when volume fraction increased.
DOI
10.17341/gazimmfd.1168768
Cilt
39
