PSI - Issue 47

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000–000

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 47 (2023) 744–748

© 2023 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 IGF27 chairpersons Abstract The paper investigated the effect of notch on the fracture load and energy for Fused Deposition Modeling components. The Semi Circular Bend Specimens made of Polyethylene terephthalate glycol were adopted. Four different sizes specimens with V-notch and round notches with radius 0.8 and 2.2 mm were 3D printed and tested in three point bending. It could be observed an increase of fracture load and energy with increasing the specimen size and with increasing the notch radius. © 2023 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 IGF27 chairpersons Keywords: Type your keywords here, separated by semicolons ; 1. Introduction The additive manufacturing techniques developed quickly in the last decades. The Fused Deposition Modeling (FDM) is one of the most used method for additive manufacturing due to simplicity, cost effective and the good mechanical properties obtained, Masood (1996). The advantage of FDM is that it can be used with a wide variety of polymers, including both thermoplastic and thermosetting materials, like Polylactic acid (PLA), Acrylonitrile butadiene styrene (ABS) and Polyethylene terephthalate glycol (PETG), Singh et al. (2020). In consequence, now the tendency is to produce larger components with complex geometries. On this regard, the size and notch effects are very important for designing large 3D printed structures. The presence of notches creates a stress concentration effect, which can lead to crack initiation and decreasing the load carrying capacity of the structures. Few studies investigated the fracture toughness of FDM components, mostly for PLA materials, and the notch effect on the additive manufactured materials. Kiendl & Gao (2020) investigated the influence of raster layup on the PLA 27th International Conference on Fracture and Structural Integrity (IGF27) The notch effect on additive manufactured polymers Liviu Marsavina a 0F *, Radu Negru a , Dan Serban a , Mihai Marghitas a , Cosmin Popa a a University Politehnica Timisoara, Blvd. M. Viteazu, Nr. 1, Timisoara 300222, Romania Abstract The paper investigated the effect of notch on the fracture load and energy for Fused Deposition Modeling components. The Semi Circular Bend Specimens made of Polyethylene terephthalate glycol were adopted. Four different sizes specimens with V-notch and round notches with radius 0.8 and 2.2 mm were 3D printed and tested in three point bending. It could be observed an increase of fracture load and energy with increasing the specimen size and with increasing the notch radius. © 2023 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 IGF27 chairpersons Keywords: Type your keywords here, separated by semicolons ; 1. Introduction The additive manufacturing techniques developed quickly in the last decades. The Fused Deposition Modeling (FDM) is one of the most used method for additive manufacturing due to simplicity, cost effective and the good mechanical properties obtained, Masood (1996). The advantage of FDM is that it can be used with a wide variety of polymers, including both thermoplastic and thermosetting materials, like Polylactic acid (PLA), Acrylonitrile butadiene styrene (ABS) and Polyethylene terephthalate glycol (PETG), Singh et al. (2020). In consequence, now the tendency is to produce larger components with complex geometries. On this regard, the size and notch effects are very important for designing large 3D printed structures. The presence of notches creates a stress concentration effect, which can lead to crack initiation and decreasing the load carrying capacity of the structures. Few studies investigated the fracture toughness of FDM components, mostly for PLA materials, and the notch effect on the additive manufactured materials. Kiendl & Gao (2020) investigated the influence of raster layup on the PLA 27th International Conference on Fracture and Structural Integrity (IGF27) The notch effect on additive manufactured polymers Liviu Marsavina a 0F *, Radu Negru a , Dan Serban a , Mihai Marghitas a , Cosmin Popa a a University Politehnica Timisoara, Blvd. M. Viteazu, Nr. 1, Timisoara 300222, Romania

* Corresponding author. E-mail address: liviu.marsavina@upt.ro * Corresponding author. E-mail address: liviu.marsavina@upt.ro

2452-3216 © 2023 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 IGF27 chairpersons 2452-3216 © 2023 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 IGF27 chairpersons

2452-3216 © 2023 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 IGF27 chairpersons 10.1016/j.prostr.2023.07.045