PSI - Issue 56

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

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

Procedia Structural Integrity 56 (2024) 71–77

© 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 The scope of this study is to investigate the variation of the mechanical properties of the unreinforced Makrolon 2405, and of the glass fibre reinforced Makrolon 9415 and Makrolon 8035 polycarbonate grades, in terms of elasticity modulus, tensile strength and Poisson's ratio, by subjecting standard, dogbone type specimens, to traction tests combined with various temperature loads. In addition, the long-term effect of the thermal cycles is also analyzed by conducting a material aging test for the proposed polycarbonate grades. Measurements are done using video extensometer and digital image correlation techniques. The scope of this study is to investigate the variation of the mechanical properties of the unreinforced Makrolon 2405, and of the glass fibre reinforced Makrolon 9415 and Makrolon 8035 polycarbonate grades, in terms of elasticity modulus, tensile strength and Poisson's ratio, by subjecting standard, dogbone type specimens, to traction tests combined with various temperature loads. In addition, the long-term effect of the thermal cycles is also analyzed by conducting a material aging test for the proposed polycarbonate grades. Measurements are done using video extensometer and digital image correlation techniques. Keywords: Makrolon; thermal aging; Poisson’s ratio; digital image correlation Structural Integrity and Reliability of Advanced Materials obtained through Additive Manufacturing (SIRAMM23) Temperature and Thermal Aging Effects on the Mechanical Response of Polycarbonate Materials Tamas Krausz a *, Cosmin-Florin Popa b , Cosmin-Denis Topircean c , Lucian Rusu d , Liviu Marsavina e a Mechanics and Strength of Materials, Politehnica University of Timisoara, 1 st Mihai Viteazu Bd., Timisoara, 300222, Timis, Romania Structural Integrity and Reliability of Advanced Materials obtained through Additive Manufacturing (SIRAMM23) Temperature and Thermal Aging Effects on the Mechanical Response of Polycarbonate Materials Tamas Krausz a *, Cosmin-Florin Popa b , Cosmin-Denis Topircean c , Lucian Rusu d , Liviu Marsavina e a Mechanics and Strength of Materials, Politehnica University of Timisoara, 1 st Mihai Viteazu Bd., Timisoara, 300222, Timis, Romania Abstract Thermoplastic materials, due to their nature, are sensible to temperature variations. This sensibility restrains their usage to a limited number of applications, such as interior automotive products, household, and consumer electronics, where temperature and humidity conditions are limited to a certain range, thus ensuring their structural stability. The polycarbonate grades from the Makrolon family are frequently met in various automotive electronic products, therefore their mechanical parameters must be thoroughly investigated before designing the mechanical components these materials will be used for. Abstract Thermoplastic materials, due to their nature, are sensible to temperature variations. This sensibility restrains their usage to a limited number of applications, such as interior automotive products, household, and consumer electronics, where temperature and humidity conditions are limited to a certain range, thus ensuring their structural stability. The polycarbonate grades from the Makrolon family are frequently met in various automotive electronic products, therefore their mechanical parameters must be thoroughly investigated before designing the mechanical components these materials will be used for.

Keywords: Makrolon; thermal aging; Poisson’s ratio; digital image correlation

* Corresponding author. Tel.: +4-0256-403570. E-mail address: tamas.krausz@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 * Corresponding author. Tel.: +4-0256-403570. E-mail address: tamas.krausz@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 10.1016/j.prostr.2024.02.039