Journal article
Enhancing Tensile Response of Polymeric Elements Using Bioinspired 3D Printing: Studying the Effects of Printing Patterns and Process Parameters
Advances in civil engineering materials, v 12(1), pp 1-23
11 Jan 2023
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In construction, additive manufacturing (AM) can be used to create structural or non-structural elements, such as frameworks, reinforcement, or panels. However, AM technology still requires enhancements for the mechanical response of final 3D printed elements to accommodate the mechanical needs of structural components. This paper evaluates various AM process param-eters and bioinspired printing patterns to improve the mechanical performance of 3D printed polymeric elements. AM processes, including printing speed and nozzle diameter, are studied. Bioinspired patterns, including Bouligand-like, alternating, sinusoidal, grid, triangular, and hex-agonal, are investigated and compared to simple parallel patterns. Results of this study suggest that the mechanical behavior of 3D printed elements can be significantly enhanced by opti-mizing the printing speed and nozzle diameter. Incorporating bioinspired architectures in AM, such as the Bouligand pattern, are shown to enhance mechanical performance. Slower speeds and larger nozzle diameters result in higher tensile strength. Continuous and twisting patterns yield more ductility, while patterns parallel to the direction of the tensile test result in higher strengths. Microscopic images from the fracture surface indicate that a larger nozzle diameter enhances intra-and interlayer bonding between consequent printed layers. Additionally, more complex crack propagation is observed in twisting patterns with enhanced elongation before total failure. It is also observed that there is an optimal time of exposure to high temperature for deposited materials during AM to improve bonding between adjacent beads. Bioinspired patterns help maintain higher ductility with similar strength despite encompassing higher porosity than parallel patterns, which could be advantageous for material optimization pur-poses. The bioinspired 3D printed polymeric elements showed tensile properties higher than those of plain polymer filament. The outcome of this study can help optimize both the process and the architecture of 3D printed elements to enhance their mechanical properties to be used as reinforcing elements for reinforced concrete applications.
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Details
- Title
- Enhancing Tensile Response of Polymeric Elements Using Bioinspired 3D Printing: Studying the Effects of Printing Patterns and Process Parameters
- Creators
- Parsa Namakiaraghi - Drexel UniversityLiam McNally - Drexel UniversityRobert Spragg - Federal Highway AdministrationYaghoob Amir Farnam - Drexel University
- Publication Details
- Advances in civil engineering materials, v 12(1), pp 1-23
- Publisher
- Amer Soc Testing Materials
- Number of pages
- 24
- Grant note
- 985008 / PA Manufacturing Innovation Program
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000963778500001
- Scopus ID
- 2-s2.0-85148330654
- Other Identifier
- 991020836324304721
UN Sustainable Development Goals (SDGs)
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Materials Science, Multidisciplinary