Ameen, A., Takhakh, A., Abdal-hay, A. (2024). Mechanical compressive properties of TPU 3D printed with various parameters. , 17(4), 371-382. doi: 10.30772/qjes.2024.148664.1193
Ahmed A. Ameen; Ayad M. Takhakh; Abdalla Abdal-hay. "Mechanical compressive properties of TPU 3D printed with various parameters". , 17, 4, 2024, 371-382. doi: 10.30772/qjes.2024.148664.1193
Ameen, A., Takhakh, A., Abdal-hay, A. (2024). 'Mechanical compressive properties of TPU 3D printed with various parameters', , 17(4), pp. 371-382. doi: 10.30772/qjes.2024.148664.1193
Ameen, A., Takhakh, A., Abdal-hay, A. Mechanical compressive properties of TPU 3D printed with various parameters. , 2024; 17(4): 371-382. doi: 10.30772/qjes.2024.148664.1193

Mechanical compressive properties of TPU 3D printed with various parameters

Al-Qadisiyah Journal for Engineering Sciences
Article 8, Volume 17, Issue 4, December 2024, Pages 371-382    PDF (1.28 M)
Document Type: Research Paper
DOI: 10.30772/qjes.2024.148664.1193
Authors
Ahmed A. Ameen* 1; Ayad M. Takhakh1; Abdalla Abdal-hay2, 3, 4
1Mechanical Engineering Department, College of Engineering, Al-Nahrain University, Baghdad 10072, Iraq
2Faculty of Industry and Energy Technology, Mechatronics Technology Program, New Cairo Technological University, Cairo, Egypt
3Department of Engineering Materials and Mechanical Design, Faculty of Engineering, South Valley University, Qena 83523, Egypt
4The University of Queensland, School of Dentistry, Oral Health Centre Herston, 288 Herston Road, Herston, QLD 4006, Australia
Abstract
Shape memory polymer (SMP) is a material that has the ability to recover its original shape from a temporary (deformed) shape by applying external stimuli. The smart scaffold based on SMP is used to enhance delivery, load bearing, and tissue defect filling. Therefore, specimens with the structure of the face-centered cubic were produced under various printing conditions to characterize their effects on the mechanical properties. Fused deposition modeling is utilized to construct the specimens of shape memory thermoplastic polyurethane (MM-3520). Printing parameters with different levels were used in specimen fabrication, including layer thicknesses of 0.1, 0.2, and 0.3 mm, printing temperatures of 210, 220, and 230 ° C, and printing speeds of 20, 30, and 40 mm/sec. We performed the microstructural analysis under a microscope to examine the impact of printing factors on lattice structures. Then there is the compression test, which evaluates mechanical properties such as linear elastic stiffness, collapse stress, plateau stiffness, and densification stress. Analyzing the microstructure of the printed specimens exhibits that the specimens with the highest printing temperature, the lowest printing speed, and a thinner printing layer have better layer adhesion and lower porosities. As well, figures and main effect plots revealed that the specimens printed with a layer height of 0.1mm, a printing temperature of 230 ° C, and a printing speed of 20 mm/s had compressive strengths of 0.6129±0.062, 0.6018±0.106, and 0.6082±0.078 MPa, respectively. These are the highest results in terms of strength compared to other levels of parameters.
Keywords
Fused Deposition Modeling; Shape memory polymer; thermoplastic polyurethane; Printing parameters; Mechanical properties
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