PSI - Issue 35

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ScienceDirect

Procedia Structural Integrity 35 (2022) 59–65 Structural Integrity Procedia 00 (2021) 000–000 Structural Integrity Procedia 00 (2021) 000–000

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© 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 IWPDF 2021 Chair, Tuncay Yalçinkaya Abstract Considering capabilities of additive manufacturing (AM), its application has been increased in numerous industrial and research projects. The three-dimensional (3D) printing techniques have been used for fabrication of prototypes and functional end-use products with complex geometries. 3D printing of continuous fiber reinforced components is a promising composite fabrication process which can be utilized in di ff erent industries. This paper evaluates the mechanical performance and fracture behavior of reinforced and unreinforced parts fabricated by 3D printing technology. To this aim, nylon and fiberglass materials were used to print specimens based on material extrusion technique. The test coupons were designed with di ff erent fiber volumes and saved in “.stl” format, and later molten material was used to print the specimens in layers. Since there is a possibility to improve the strength of 3D-printed parts by incorporation of fibers, here we used fiberglass to improve the mechanical performance of additively manufactured parts. Based on a series of experimental practices, mechanical properties of reinforced and unreinforced parts were determined. In detail, fracture load and curves representing the relationship between stress and strain were documented. In addition, e ff ects of fiber volume on the fracture resistance of the parts were determined. The outcome of this study can be used for design of 3D-printed fiber reinforced composites with superior fracture resistance. c 2021 The Authors. Published by Elsevier B.V. his is an open access article under the CC BY-NC-ND license (http: // creativec mmons.org / licenses / by-nc-nd / 4.0 / ) eer-review under responsibility of IWPDF 2021 Chair, Tuncay Yalc¸inkaya. Keywords: Additive manufacturing; reinforced nylon; fracture behavior; tensile strength; fused filament fabrication. 2nd International Workshop on Plasticity, Damage and Fracture of Engineering Materials E ff ects of fiber on the fracture behavior of 3D-printed fiber reinforced nylon Mohammad Reza Khosravani ∗ , Tamara Reinicke Chair of Product Development, University of Siegen, Paul-Bonatz-Str. 9-11, 57068 Siegen, Germany Abstract Considering capabilities of additive manufacturing (AM), its application has been increased in numerous industrial and research projects. The three-dimensional (3D) printing techniques have been used for fabrication of prototypes and functional end-use products with complex geometries. 3D printing of continuous fiber reinforced components is a promising composite fabrication process which can be utilized in di ff erent industries. This paper evaluates the mechanical performance and fracture behavior of reinforced and unreinforced parts fabricated by 3D printing technology. To this aim, nylon and fiberglass materials were used to print specimens based on aterial extrusion technique. The test coupons were designed with di ff erent fiber volumes and saved in “.stl” format, and later molten material was used to print the specimens in layers. Since there is a possibility to improve the strength of 3D-printed parts by incorporation of fibers, here we used fiberglass to improve the mechanical performance of additively manufactured parts. Based on a series of experimental practices, mechanical properties of reinforced and unreinforced parts were determined. In detail, fracture load and curves representing the relationship between stress and strain were documented. In addition, e ff ects of fiber volume on the fracture resistance of the parts were determined. The outcome of this study can be used for design of 3D-printed fiber reinforced composites with superior fracture resistance. c 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of IWPDF 2021 Chair, Tuncay Yalc¸inkaya. Keywords: Additive manufacturing; reinforced nylon; fracture behavior; tensile strength; fused filament fabrication. 2nd International Workshop on Plasticity, Damage and Fracture of Engineering Materials E ff ects of fiber on the fracture behavior of 3D-printed fiber reinforced nylon Mohammad Reza Khosravani ∗ , Tamara Reinicke Chair of Product Development, University of Siegen, Paul-Bonatz-Str. 9-11, 57068 Siegen, Germany

1. Introduction 1. Introduction

Additive manufacturing (AM) is an advanced technology based on adding material in layer form, utilizing three dimensional (3D) data. This rapid prototyping technique is very broad term which has been classified into seven cate gories: material jetting, powder bed fusion (PBF), vat photo polymerization, material extrusion, directed energy depo sition (DED), sheet lamination, and binder jetting (ASTM F2792, 2012). Di ff erent materials such as ceramics, stain less steel, titanium, and thermoplastics have been used in aforementioned 3D printing methods (Li et al., 2020; Nasiri and Khosravani, 2020; Baux et al., 2021). Recently, product complexity has been increased in di ff erent industries, and Additive manufacturing (AM) is an advanced technology based on adding material in layer form, utilizing three dimensional (3D) data. This rapid prototyping technique is very broad term which has been classified into seven cate gories: material jetting, powder bed fusion (PBF), vat photo polymerization, material extrusion, directed energy depo sition (DED), sheet lamination, and binder jetting (ASTM F2792, 2012). Di ff erent materials such as ceramics, stain less steel, titanium, and thermoplastics have been used in aforementioned 3D printing methods (Li et al., 2020; Nasiri and Khosravani, 2020; Baux et al., 2021). Recently, product complexity has been increased in di ff erent industries, and

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 IWPDF 2021 Chair, Tuncay Yal ç inkaya 10.1016/j.prostr.2021.12.048 ∗ Corresponding author. E-mail address: mohammdreza.khosravani@uni-siegen.de 2210-7843 c 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review u der responsibility of IWPDF 2021 hair, Tu cay Yalc¸inkaya. ∗ Corresponding author. E-mail address: mohammdreza.khosravani@uni-siegen.de 2210-7843 c 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of IWPDF 2021 Chair, Tuncay Yalc¸inkaya.