PSI - Issue 47

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

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

Procedia Structural Integrity 47 (2023) 503–512

© 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 This study focuses on the assessment of the effects of modal stress mixity (tensile and shear) on the interlaminar strength of Tensylon® a UHMWPE produced by DuPont©, with a 60-bar pressure cycle. To do so, the modified ARCAN device, proven to be efficient in the composite and composite assemblies out-of-plane strength evaluation in quasi-static regime is used. This method offers the possibility to vary the modal stress mixity on the material, from tensile to shear including intermediate loading rates. Edge effects are also avoided by using this method, this point of a paramount importance for an efficient assessment of the material strength to fracture. An adhesive selection was done by considering the weak surface adhesion energy of Tensylon® and its low melting point, sensitive to curing temperature of the adhesive during the specimen preparation. Surface treatments are also done before bonding on Tensylon® surface as well as on substrates. The results obtained show a good repeatability and allow to determine a delamination surface in the Shear-Tensile plane. © 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: Tensylon®, Polyethylene, composite, ARCAN, interlaminar, characterization, multimodal. Abstract Ultra-high molecular weight polyethylene (UHMWPE) composite materials are of interest for various applications because of their mechanical strength. They are obtained by plies pressing and their mechanical characteristics depend on the temperature pressing and heating cycle. In order to assess the out-of-plane cohesion of the resulting material, specimens have been subjected to interply adhesion testing. This study focuses on the assessment of the effects of modal stress mixity (tensile and shear) on the interlaminar strength of Tensylon® a UHMWPE produced by DuPont©, with a 60-bar pressure cycle. To do so, the modified ARCAN device, proven to be efficient in the composite and composite assemblies out-of-plane strength evaluation in quasi-static regime is used. This method offers the possibility to vary the modal stress mixity on the material, from tensile to shear including intermediate loading rates. Edge effects are also avoided by using this method, this point of a paramount importance for an efficient assessment of the material strength to fracture. An adhesive selection was done by considering the weak surface adhesion energy of Tensylon® and its low melting point, sensitive to curing temperature of the adhesive during the specimen preparation. Surface treatments are also done before bonding on Tensylon® surface as well as on substrates. The results obtained show a good repeatability and allow to determine a delamination surface in the Shear-Tensile plane. © 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: Tensylon®, Polyethylene, composite, ARCAN, interlaminar, characterization, multimodal. 27th International Conference on Fracture and Structural Integrity (IGF27) Interlaminar strength characterization of Tensylon® UHMWPE under multimodal loads Rachid Bensaada a *, Aboulghit El Malki Alaoui a , David Thévenet a , Michel Arrigoni a † a ENSTA Bretagne, IRDL UMR 6027 CNRS, 2 rue François Verny, 29200 Brest, France 27th International Conference on Fracture and Structural Integrity (IGF27) Interlaminar strength characterization of Tensylon® UHMWPE under multimodal loads Rachid Bensaada a *, Aboulghit El Malki Alaoui a , David Thévenet a , Michel Arrigoni a † a ENSTA Bretagne, IRDL UMR 6027 CNRS, 2 rue François Verny, 29200 Brest, France Abstract Ultra-high molecular weight polyethylene (UHMWPE) composite materials are of interest for various applications because of their mechanical strength. They are obtained by plies pressing and their mechanical characteristics depend on the temperature pressing and heating cycle. In order to assess the out-of-plane cohesion of the resulting material, specimens have been subjected to interply adhesion testing.

* Corresponding author. E-mail address: rachid.ben_saada@ensta-bretagne.fr † Corresponding author. E-mail address: michel.arrigoni@ensta-bretagne.fr * Corresponding author. E-mail address: rachid.ben_saada@ensta-bretagne.fr † Corresponding author. E-mail address: michel.arrigoni@ensta-bretagne.fr

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.2023.07.074