Planar reinforcement by sheet type stiffeners for fused deposition modeling
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DOI 10.1007/s12206-020-0912-y
Journal of Mechanical Science and Technology 34 (10) 2020 Original Article DOI 10.1007/s12206-020-0912-y Keywords: · Fiber-reinforced plastic · Fused deposition modeling · Mechanical property · Planar reinforcement · Composite material
Planar reinforcement by sheet type stiffeners for fused deposition modeling Tae-Hyun Kim and Eun-Ho Lee School of Mechanical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Korea
Abstract Correspondence to: Eun-Ho Lee [email protected]
Citation: Kim, T.-H., Lee, E.-H. (2020). Planar reinforcement by sheet type stiffeners for fused deposition modeling. Journal of Mechanical Science and Technology 34 (10) (2020) 4201~4209. http://doi.org/10.1007/s12206-020-0912-y
This paper presents a planar reinforcement (PR) method for fused deposition modeling. In the proposed PR method, planar reinforcing parts, such as metal sheets or carbon fiber film (CFF), are placed inside the structures laminated by additive manufacturing. The tensile, bending stiffness, and vibration characteristics of the planar reinforced structures were evaluated using mechanical tests (tensile, bending, and impact hammer tests). The mechanical properties of the planar reinforced specimens were compared with those of other specimens built by polylactic acid (PLA) and short carbon fiber reinforcement thermoplastic (SFRTP) filaments. Results show that the planar reinforced structures have greater stiffness than the other specimens. The experimental results are analyzed using the mixture equation of composite materials, and the difference in reinforcement effect caused by metal and CFF sheets is discussed.
Received February 17th, 2020 Revised
June 26th, 2020
Accepted July 28th, 2020
1. Introduction
† Recommended by Editor Seungjae Min
Additive manufacturing (AM) or 3D printing has attracted attention from the academia and industry because it yields more flexibility than traditional manufacturing [1-5]. In the medical field, organs can be formed with cells or tissues from a 3D printing extruder [6, 7]. In the construction industry, AM can be used to build a house within one day, reducing the construction cost [8]. Fused deposition modeling (FDM) is a simple and low-cost 3D printing method that uses molten plastic filaments, such as acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA), passing through a hot chamber. Although using plastic filament is simple and inexpensive, it requires high mechanical properties. Many scholars have reported various methods to improve the strength of structures laminated by FDM. Kovan et al. [9] investigated the effects of layer thickness and print orientation on the strength of FDM structures. An et al. [10] showed that the side wall has a strong effect on the stiffness. Zhang et al. [11] conducted heat treatment using microwave irradiation to improve the layer adhesion, and Jo et al. [12] explored the influence of heat treatment on the mechanical strength of FDM printed structures. Yang and Zhang [13] performed a numerical sim
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