Experimental determination and numerical simulation of temperature dependent material and damage behaviour of additively manufactured polyamide 12

Roszak, Robert; Schob, Daniela; Sagradov, Ilja; Kotecki, Krzysztof; Sparr, Holger; Maasch, Phillip; Franke, R.; Ziegenhorn, Matthias

doi:10.1016/j.mechmat.2021.103893

Cited by 3 publications

(1 citation statement)

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“…The application of the XCT method supplements this information with the observation of the behavior of pores inside the stretched samples [17], and also provides additional information in the form of changes in the shape of the pores, and their connection or nucleation. Such information can be used to prepare and validate numerical simulations [16,18] or to design the geometry for AM technology [19]. Therefore, the purpose of this article is the investigation of polyamide-12 samples manufactured with SLS technology using the exsitu XCT tensile test.…”

Section: Introductionmentioning

confidence: 99%

Investigation of porosity behavior in SLS polyamide-12 samples using ex-situ X-ray computed tomography

Ziółkowski

Grochowska

Kęszycki

et al. 2021

Materials Science-Poland

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The paper presents a detailed description of the method of carrying out static tensile tests in ex-situ X-ray computed tomography (XCT) conditions. The study compares samples manufactured with the use of additive technology in two orientations, horizontally and vertically, which correspond to the in-layer and between-layer sintering mechanisms. Both the fracture mechanism and porosity behavior differed significantly for the two manufacturing directions. The conducted analysis made it possible to compare the changes in porosity, the number of pores, and also their diameters and shape before and after the tensile test. This allows for in-depth identification and better understanding of the phenomena occurring during the static tensile test of polyamide-12 samples manufactured using selective laser sintering (SLS) technology.

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