PSI - Issue 34

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2021) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 34 (2021) 199–204

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Esiam organisers Abstract The aim of this paper is to analyse the fatigue behaviour of an additively manufactured (AM) short glass fiber reinforced polymer. The material under investigation is a recycled mineral-filled polypropylene reinforced by means of short glass fibers. The specimens have been produced by using a Pellet-based Additive Manufacturing (PAM) system, which is basically a Fused Deposition Modelling (FDM) process in which the feedstock consists of pellets. The three infill patterns most commonly used in 3D printing were selected to produce dog-bone shaped specimens oriented with their axes parallel to the platform (i.e. orthogonal to the build direction). The fatigue behaviour of recycled 3D printed specimens was then compared to the results obtained from specimens made of the same material produced by injection moulding (IM). The effect of the recycling was studied only for the IM specimens by testing both the virgin and recycled compound. Finally, preliminary analyses of the macroscopic damage mechanisms were done by observing the fracture paths after fatigue failure. © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Esiam organisers Keywords: Fatigue Strength; Recycled polimers; short glass fiber reinforced polypropylene; Mineral filler; Polypropylene; Additive manufacturing 1. Introduction The use of recycled compounds is one of the main goals to be pursued in the industry to reduce the waste of plastics. A further way for minimizing the waste of Short Fiber Reinforced Polymer Composites (SFRPCs) thanks to the This i The second European Conference on the Structural Integrity of Additively Manufactured Materials Fatigue behaviour of 3D printed virgin and recycled short-glass fiber-reinforced and mineral-filled polypropylene D. Rigon a , F. Florian a , M. Ricotta a , G. Ardengo b , F. Trivillin b and G. Meneghetti a, * a University of Padova, Department of Industrial Engineering, via Venezia 1 – 35131 Padova, Italy b Group Technology Organization, Electrolux Italy S.P.A., Porcia, Italy lo a b b a,

* Corresponding author. Tel.: +39-049-8276751; fax: +39-049-8276785. E-mail address: giovanni.meneghetti@unipd.it

2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Esiam organisers

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Esiam organisers 10.1016/j.prostr.2021.12.029