PSI - Issue 56

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 56 (2024) 167–175

© 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 SIRAMM23 organizers Abstract In this paper, the fracture behavior of two short fiber reinforced polymers is discussed. The two investigated materials are a polyphthalamide (PPA) with glass fiber inclusions of 33% (GF33) and a polyphenylene sulfide (PPS) with glass fiber inclusions of 40% (GF40). Due to the highly anisotropic behavior of these types of materials, most of the mechanical properties, including fracture toughness, are dependent on the fiber orientation. One parameter that directly affects the fiber orientation is the wall thickness. Single edge crack (SEC) test specimens were used to determine the cracking force under mode I (opening mode) loading conditions. The specimens were milled from plates at different orientations. Three fiber orientations were considered: 0°, 45° and 90°. Two different thicknesses of the plates were used: 2.0 mm and 3.2 mm. © 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 SIRAMM23 organizers Keywords: Fracture toughness; short fiber reinforced polymers; polyphthalamide; polyphenylene sulfide. Structural Integrity and Reliability of Advanced Materials obtained trough Additive Manufacturing (SIRAMM23) The influence of wall thickness on the fracture toughness of short fiber reinforced polymers obtained using single edge cracked test specimens Alexandru Isaincu a,* , Dan Micota b , Liviu Marsavina b , Viorel Ungureanu a a Politehnica University of Timișoara, Department of Steel Structures and Structural Mechanics, Ioan Curea, No. 1, Timișoara 30 0224, Romania b Politehnica University of Timișoara, Department of Mechanics and Strength of Materials, Mihai Viteazul Blvd, No. 1, Timișoara 300222, Romania

* Corresponding author. Tel.: +40-720-75-7935. E-mail address: Alexandru.isaincu@student.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 SIRAMM23 organizers

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 SIRAMM23 organizers 10.1016/j.prostr.2024.02.052