Additive Manufacturing in Architecture: 3D Printing Solutions for Vaulted Spaces

Graziano, Angelo Vito; Cavaliere, Ilaria; Costantino, Dario; Fallacara, Giuseppe; Parisi, Nicola

doi:10.1007/978-3-031-21735-7_45

Cited by 2 publications

(1 citation statement)

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“…The rapid proliferation of additive manufacturing, commonly referred to as threedimensional (3D) printing, has made significant inroads across various domains of science and engineering. Its application spans a wide spectrum of fields, encompassing agriculture [1], medicine [2], civil engineering [3], the automotive industry [4], education [5], dentistry [6], architecture [7], food production [8], electrical engineering [9], and biomechanics [10], to mention but a few. While the potential benefits of 3D printing are immense, it is imperative to acknowledge that this technology currently comes with a hefty price tag.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Size on the Mechanical Properties of 3D-Printed Polymers

Sadaghian,

Dadmand,

Pourbaba

et al. 2023

Sustainability

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Most of the experiments on additively manufactured polymers are on a small scale, and it remains uncertain whether findings at a small scale can be extrapolated to their larger-scale counterparts. This uncertainty mainly arises due to the limited studies on the effect of size on three-dimensional (3D)-printed polymers, among many others. Given this background, this preliminary study aims to investigate the effect of geometric dimensions (i.e., the size effect) on the mechanical performance of four representative types of 3D-printable polymers, namely, (1) polycarbonate acrylonitrile butadiene styrene (PC/ABS), (2) acrylonitrile-styrene-acrylate (ASA), (3) polylactic acid (PLA) as a bio biodegradable and sustainable material, and (4) polyamide (PA, nylon), based on compression, modulus of elasticity, tension, and flexural tests. Eight different sizes were investigated for compression, modulus of elasticity, and tension tests, while seven different sizes were tested under flexure as per relevant test standards. A material extrusion technique was used to 3D-print the polymers in a flat build orientation and at an infill orientation angle of 45°. The results have shown that the mechanical properties of the 3D-printed polymers were size-dependent, regardless of the material type, with the most significant being flexure, followed by tension, compression, and modulus of elasticity; however, no clear general trend could be identified in this regard. All the materials except for nylon showed a brittle failure pattern, characterized by interfacial failure rather than filament failure. PLA outperformed the other three polymer specimens in terms of strength, irrespective of the type of loading.

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