An exploration of 3D printed freeform kerf structures

Aryabhat Darnal; Kamal Poluri; Himani Deshpande; Jeeeun Kim; Negar Kalantar; Anastasia Muliana

doi:10.1117/12.2658554

18 April 2023 An exploration of 3D printed freeform kerf structures

Aryabhat Darnal, Kamal Poluri, Himani Deshpande, Jeeeun Kim, Negar Kalantar, Anastasia Muliana

Proceedings Volume 12484, Behavior and Mechanics of Multifunctional Materials XVII; 124840A (2023) https://doi.org/10.1117/12.2658554
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States

Abstract

This study presents the use of a 3D printing method to create kerf structures that can be formed into complex geometries. Kerfing is a subtractive manufacturing method to create flexible surfaces out of stiff planar materials such as metal or wood sheets by removing portions of the materials. The kerf structures are characterized by the kerf pattern, such as square interlocked Archimedean spiral and hexagon spiral domain, cell size, and cut density. By controlling the kerf pattern, spatial density, cell size, and material, the local properties of the structure can be controlled and optimized to achieve the desired local flexibility while minimizing the stresses developed in the kerf structure. Since subtractive manufacturing limits the patterns and materials that can be considered in kerf structures, FDM 3D printing is explored to fabricate kerf structures using polymers, such as Polylactic acid (PLA) and Thermoplastic polyurethane (TPU), where it is possible to vary microstructural topology and materials within the kerf structures. 3D printing enables the combination of the two different polymers and tuning printing factors to create multifunctional kerf structures. The multifunctional kerf structures can then be actuated using non-mechanical stimulations, such as thermal, to shape them into complex geometries.

Conference Presentation

Citation Download Citation

Aryabhat Darnal, Kamal Poluri, Himani Deshpande, Jeeeun Kim, Negar Kalantar, and Anastasia Muliana "An exploration of 3D printed freeform kerf structures", Proc. SPIE 12484, Behavior and Mechanics of Multifunctional Materials XVII, 124840A (18 April 2023); https://doi.org/10.1117/12.2658554

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