Ingenieurwissenschaften und zugeordnete Tätigkeiten
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- 2019 (1) (entfernen)
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- Additive Manufacturing (1)
- Build Angle (1)
- Computed Tomography (1)
- Laser Beam Melting (1)
- Porosity (1)
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- Selective Laser Melting (1)
Organisationseinheit der BAM
In this work, the structural integrity of LBM fabricated IN625 small cylinders (d = 1 mm, h = 6 mm) was investigated regarding the porosity and the surface roughness by means of computed tomography. The measurements were carried out on a GE v|tome|x L 300/180 with a reconstructed voxel size of 2 µm. The pores were analyzed for size, shape and spatial distribution. The correlation between compactness C and spatial distribution showed that elongated pores (C < 0.2) appear exclusively within a distance of 80 µm to the sample surface. The reconstructed surface was digitally meshed and unwrapped to evaluate the mean roughness Ra. Since the gravity correlates linearly with the sine of the build angle, the influence of gravity on porosity and surface roughness was determined.