Unmanned Aerial Vehicle Production  With Additive Manufacturing

Koç, Ebubekir; Çalışkan, Cemal İrfan; Coşkun, Mert; Khan, Hamaid Mahmoud

doi:10.30518/jav.681037

Cited by 5 publications

(1 citation statement)

References 12 publications

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“…A slight variation in the powder granulometry can produce unfavorable results. Moreover, the processing conditions such as the sintering location, geometry type, and atmospheric conditions are all essential parameters of the SLS process to change the mechanical properties of the final components [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Estimation of the compression strength and surface roughness of the as-built SLS components using weibull distribution

Khan¹

2021

J Adv Manuf Eng

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Selective laser sintering (SLS) is a process of fabrication of three-dimensional structures by fus- ing powder particles using a guided laser source. The uncertainty in the mechanical properties of the SLS parts fabricated at the same time and with the same process parameters can affect the repeatability of the SLS process. A vast difference in the mechanical properties of the concurrently processed parts can lower the production quality of the batch. Therefore, the param- eters are required to be design based on the most probable outcome of the desired properties. Weibull distribution is one such statistical-based probability distribution method to measure the likelihood of the occurrence of a value of any random variable falling within a particular range of values. Here, the Weibull distribution was used to measure the relative likelihood (90% probability) of the surface roughness and the compressive strength values of the SLS-built polyamide PA2200 components in the given sample space that was obtained from 20 random samples. The results show that the variance in the surface roughness (scan and built plane) and the compressive strength values were in the range of 6–7 μm and around 10 MPa, respectively. Moreover, the surface roughness of the two orthogonal planes with 90% reliability was measured at 14.81 μm (scan plane) and 12.15 μm (built plane). Similarly, the yield strength and the compressive strength with 90% reliability were found 25.87 MPa and 62.64 MPa, respectively.

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Section: Introductionmentioning

confidence: 99%