PSI - Issue 41

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

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Procedia Structural Integrity 41 (2022) 631–637

© 2022 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 MedFract2Guest Editors. © 2022 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 MedFract2Guest Editors. Keywords: Fatigue Tests; Tensile Tests; Hybrid Joints; Bonded Joints; Composites 1. Introduction Composite materials are attracting several engineering fields thanks to their advantages, in terms of specific strength with respect to conventional (metallic) materials. However, their application can become particularly challenging due Abstract Joining of composite ma erials can be perform with differe t techniques and, in particular, trough mechanical fasteners, bonding, hybrid solutio s. In la t years, hybrid (bolt d/bonded) joints are attracting th interest of several companie and scient fic community, sinc the us of both techniques permi to vercome some crit cal aspects conn ct d to separate usage of adhe ive and bolts, i.e., negativ effec s of the environmental conditions on adhesive, localiz d stresses at the notch. This pap r aims to im rove the knowl dge about the fatigue behavior of ri CFRP (Carb Fiber R inforced Polymer) joints For the pur e, experimental fa igue d st tic tests are performed on hybrid and on ed joints and t e resul s her in discussed. Results are post processed with the main goal to highlight the benefits led to the hybrid technique with respect to the bonding one. © 2022 The Authors. Published by ELSEVIER B.V. This is an ope acces article under CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) P er-review under responsibility of the MedFract2Guest Editors. Keywords: Fatigue Tests; Tensile Tests; Hybrid Joints; Bonded Joints; Composites 1. Introduction Com osite materials are attracting several engineering fields th nks to their dvantages, in erms of specific strength with respect to conventional (metallic) materials. However, their application can become particularly challenging due Abstract Joining of composite materials can be performed with different techniques and, in particular, trough mechanical fasteners, bonding, hybrid solutions. In last years, hybrid (bolted/bonded) joints are attracting the interest of several companies and scientific community, since the use of both techniques permit to overcome some critical aspects connected to the separate usage of adhesive and bolts, i.e., negative effects of the environmental conditions on adhesive, localized stresses at the notch. This paper aims to improve the knowledge about the fatigue behavior of hybrid CFRP (Carbon Fiber Reinforced Polymer) joints. For the purpose, experimental fatigue and static tests are performed on hybrid and bonded joints and the results herein discussed. Results are post processed with the main goal to highlight the benefits led to the hybrid technique with respect to the bonding one. 2nd Mediterranean Conference on Fracture and Structural Integrity Fatigue behavior of hybrid and bonded single lap joints made of composite material Raffaele Sepe a *, Alessandro De Luca b , Enrico Armentani c , Filippo Berto d 2nd Mediterranean Conference on Fracture and Structural Integrity Fatigue behavior of hybrid and bonded single lap joints made of composite material Raffaele Sepe a *, Alessandro De Luca b , Enrico Armentani c , Filippo Berto d a Department of Industrial Engineering, University of Salerno, Fisciano, Italy b Dept. of Engineering, University of Campania “Luigi Vanvitelli”, Aversa, Italy c Dept. of Chemical, Materials and Production Engineering, University of Naples “Federico II”, Naples, Italy d Dept. of Mechanical and Industrial Engineering, (NTNU), Trondheim, Norway a Department of Industrial Engineering, University of S lerno, Fisciano, Italy b Dept. of Engineering, University of Campania “Luigi Vanvitelli”, Av rsa, Italy c Dept. of Chemical, Materials and Production Engineeri g, University of Naples “Federico II”, Naples, Italy d Dept. of Mechanical and Industrial Engineering, (NTNU), Trondheim, Norway

* Corresponding author. Tel.: +39-089-964-070; E-mail address: rsepe@unisa.it * Corresponding author. Tel.: +39-089-964-070; E-mail address: rsepe@unisa.it

2452-3216 © 2022 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 MedFract2Guest Editors. 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an ope access article under t CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the MedFract2Guest Editors.

2452-3216 © 2022 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 MedFract2Guest Editors. 10.1016/j.prostr.2022.05.071