Assessment of mechanical properties and shape memory behavior of 4D printed continuous fiber-reinforced PETG composites

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Fallah, Ali and Saleem, Qandeel and Koç, Bahattin (2024) Assessment of mechanical properties and shape memory behavior of 4D printed continuous fiber-reinforced PETG composites. Composites Part A: Applied Science and Manufacturing, 181 . ISSN 1359-835X (Print) 1878-5840 (Online)

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Abstract

Additive manufacturing (AM) has transformed composite structure production with continuous fiber-reinforced composites (CFRCs). Integrating shape memory polymers (SMPs) into AM enables 4D printing, holding promise across industries. Despite SMP brittleness at low temperatures, most studies focus on high-temperature shape memory behavior. Polyethylene Terephthalate Glycol (PETG), known for good printability, shape memory, and room temperature flexibility, is reinforced with carbon fiber in this study and its chemical and thermo-mechanical properties are systematically evaluated. The investigation extends to assessing the influence of printing parameters on CFRC printability and mechanical properties to identify optimal settings. Mechanical property enhancement is significant, especially with 7% carbon fiber, resulting in 474% and 386% improvement in tensile and flexural modulus, respectively. Shape-recovery tests at room temperature show 98% recovery for pure PETG and 94% for composites. PETG CFRC's high mechanical properties, room temperature flexibility, and promising shape recovery position them for potential load-bearing applications in various industries.
Item Type: Article
Uncontrolled Keywords: A. Carbon fiber; A. Smart material; D. Mechanical testing; E. 3-D printing
Divisions: Faculty of Engineering and Natural Sciences
Integrated Manufacturing Technologies Research and Application Center
Depositing User: Ali Fallah
Date Deposited: 09 Jun 2024 22:47
Last Modified: 09 Jun 2024 22:47
URI: https://research.sabanciuniv.edu/id/eprint/49269

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