PSI - Issue 28

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.co ci c ir ct Structural Integrity Procedia 00 (2019) 000–000

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ScienceDirect

Procedia Structural Integrity 28 (2020) 393–402

© 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 European Structural Integrity Society (ESIS) ExCo Abstract In this study, the fracture properties of additively manufactured polymer parts are investigated by combination of experimental numerical methods based on digital image correlation (DIC) measurements. One method uses only measured kinematic fields, and the other one is based on Finite Element simulations driven by measured boundary conditions. The developed methods are applied to a micro Single Edge Notched Tensile (  SENT) specimen manufactured by Fused Filament Fabrication (FFF) of acrylonitrile butadiene styrene (ABS). It is shown that both methods lead to consistent evaluations of the J -integral, and the crack tip location is accurately determined by the FE-based method. The kinematic maps obtained both numerically and experimentally allow some correlations to be established between the material microstructure and its mechanical properties. © 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 European Structural Integrity Society (ESIS) ExCo Keywords: Additive manufarturing; DIC; crack growth measurement ; J -intergral. 1. Introduction Additive manufacturing is widely used today; this is evidenced by the presence of parts obtained by AM techniques in many industrial domains. Important research activity is developed around this field in order to address scientific and technological limitations. This effort is motivated by the fact that AM presents many advantages in comparison to Abstract In this study, the fracture properties of additively manufactured polymer parts are investigated by combination of experimental numerical methods based on digital image correlation (DIC) measurements. One method uses only measured kinematic fields, and the other one is based on Finite Element simulations driven by measured boundary conditions. The developed methods are applied to a micro Single Edge Notched Tensile (  SENT) specimen manufactured by Fused Filament Fabrication (FFF) of acrylonitrile butadiene styrene (ABS). It is shown that both methods lead to consistent evaluations of the J -integral, and the crack tip location is accurately determined by the FE-based method. The kinematic maps obtained both numerically and experimentally allow some correlations to be established between the material microstructure and its mechanical properties. © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC B - C- license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-revie under responsibility of the European Structural Integrity Society (ESIS) ExCo Keywords: Additive manufarturing; DIC; crack growth measurement ; J -intergral. 1. Introduction dditive anufacturing is idely used today; this is evidenced by the presence of parts obtained by techniques in any industrial do ains. I portant research activity is developed around this field in order to address scientific and technological li itations. This effort is otivated by the fact that presents any advantages in co parison to 1st Virtual European Conference on Fracture J-integral evaluation of additively manufactured polymer using local kinematic field measurements and finite element simulations Mohamed Ali Bouaziz a *, Joseph Marae Djouda a,b , François Hild b a ERMESS, EPF-Engineering school, Sceaux, France b Université Paris-Saclay, ENS Paris-Saclay, CNRS, LMT - Laboratoire de Mécanique et Technologie, Gif-sur-Yvette, France 1st irtual uropean onference on Fracture J-i t r l l ti f iti l f t r l r si l l i ti fi l s r ts fi it l t si l ti s Mohamed Ali Bouaziz a *, Joseph Marae Djouda a,b , rançois ild b a ERMESS, EPF-Engineering school, Sceaux, France b Université Paris-Saclay, ENS Paris-Saclay, CNRS, LMT - Laboratoire de Mécanique et Technologie, Gif-sur-Yvette, France

* Corresponding author. Tel.: +33760039884. E-mail address: mohamed.bouaziz@epf.fr * Corresponding author. Tel.: +33760039884. E-mail address: mohamed.bouaziz epf.fr

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 European Structural Integrity Society (ESIS) ExCo 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 European Structural Integrity Society (ESIS) ExCo

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 European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.10.046