PSI - Issue 68

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2025) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 68 (2025) 332–338

European Conference on Fracture 2024 Examining the Role of Cell Structures in the Mechanical and Vibration Characteristics of 3D Printed Parts Büşra Eyri a, *, Bartu Türkcan Çetin, Fevzi Çakmak Bolat , Taner Yılmaz Kocaeli University, Department of Mechanical Engineering Faculty of Engineering, Baki Komsuoğlu bulvarı No:515 İzmit Kocaeli, Turkey Abstract The impact of internal structures and geometric design modifications on the mechanical strength and vibration characteristics of structural components was investigated and measured. In this research, one auxetic cell structure and different cell types were used to 3D print the samples. After production, three-point bending, and vibration tests were performed under experimental conditions. The relationship between stress and frequency values was analyzed based on the results obtained. The effect of changing the cell structure on both mechanical strength and vibration behavior was thoroughly investigated. © 2025 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 ECF24 organizers Keywords: 3D Printing; Fused Deposition Modelling, PLA, ABS, Mechanical, Vibration 1. Introduction Sandwich structures are employed in a multitude of sectors including aviation, automotive, defense, and maritime, within the industry. Sandwich structures are characterized by their lightweight nature, durability, and the presence of special geometrical cores, which render them particularly suited to the absorption of energy (Günaydın, Rea, and Kazancı 2022; Ma et al. 2021). The ability of a sandwich structure to resist various forces is contingent upon both the material used and the cell designs that form the core structure. Honeycomb-type cells, one of the cell types, demonstrate high structural integrity when subjected to an out-of-plane force, yet exhibit damage at lower © 2025 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 ECF24 organizers

* Corresponding author. E-mail address: busra.eyri@kocaeli.edu.tr

2452-3216 © 2025 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 ECF24 organizers

2452-3216 © 2025 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 ECF24 organizers 10.1016/j.prostr.2025.06.062