Anisotropic mechanical performance of 3D printed fiber reinforced sustainable construction material

Panda, Biranchi; Paul, Suvash Chandra; Tan, Ming Jen

doi:10.1016/j.matlet.2017.07.123

Cited by 490 publications

(245 citation statements)

References 11 publications

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“…The deposition minimizes interaction of polymer chains between adjacent layers, which limits entanglement across this interface . Carbon fiber in melt would be oriented along the flow direction because of shear force, and the orientation can be preserved due to the big viscosity and the slow rate of polymer melt before the molten cools to a clot . An additively manufactured continuous fiber reinforced sandwich part was reported in Ref.…”

Section: Introductionmentioning

confidence: 99%

Anisotropy of poly(lactic acid)/carbon fiber composites prepared by fused deposition modeling

Ding

Zhang

et al. 2019

J of Applied Polymer Sci

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It is well known that 3D printed parts prepared by fused deposition modeling (FDM) exhibit large anisotropy of mechanical properties. In this article, poly(lactic acid; PLA)/carbon fiber (CF) composites with different built orientations (X, Y, Z) were prepared by FDM. The effects of printing temperature, speed, orientations, and layer thickness on the mechanical properties of the composites were systematically investigated. The mechanical properties of PLA/CF composites show more significant anisotropy. The orientation of the fibers along the printing direction is displayed by scanning electron microscopy. Printing parameters bring almost no effect on mechanical properties of the X‐construct oriented specimen, and bring obvious effect on those of the Y‐construct oriented specimen and Z‐construct oriented specimen. According to the analysis, carbon fiber can amplify this anisotropy from layer fashion, and the key factors from printing parameters are porosity and bond strength between fuses. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48786.

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Section: Introductionmentioning

confidence: 99%

Anisotropy of poly(lactic acid)/carbon fiber composites prepared by fused deposition modeling

Ding

Zhang

et al. 2019

J of Applied Polymer Sci

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“…It is concluded from these images that controlling the flow with proper material knowledge results uniform, continuous deposition of material as per the designed 3D model. It is worth to mention that, apart from concrete flow rate and print speed, nozzle height above the printed surface has also the influence in print quality and part stability [16,17]. Sometimes due to material sagging, height between printed surface and nozzle increases dramatically which results in strange (zig zag) flow pattern for the material coming out of the nozzle.…”

Section: Discussion and Concluding Remarksmentioning

confidence: 99%

Automation of Robotic Concrete Printing Using Feedback Control System

Panda¹,

Lim²,

Mohamed³

et al. 2017

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

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-In recent years, digital fabrication is termed as "third industrial revolution" and its interaction with extrusion based cementitious material has been well known as concrete printing. In concrete printing, a gantry/robotic system deposits concrete layer by layer following G-codes generated from slicing of the 3D component. However, the robotic system does not consider the material (concrete) properties and component geometry which sometimes cause failure in the printing process. Concrete properties are usually attributed with time and therefore the system parameters such as extruder velocity and layer height are necessarily to be controlled accordingly to obtain an uninterrupted smooth flow. In line with this, our current research aims to automate the printing process by collecting material's fresh properties through a feedforward control system. A six-axis industrial Denso® robot was used for 3D printing of geopolymer concrete with the help of screw pump and ten-millimeter circular extruder. The obtained experimental results confirmed the validity and robustness of this automated set up.

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“…In a previous study, the authors of this paper showed that the 3Dprinted geopolymers containing 0.75% and 1% (by volume) of PP fibers exhibited deflectionhardening behavior in bending [13]. Panda et al [14] investigated the effects of short glass fiber on the mechanical properties of 3D-printed geopolymer concrete. Bos et al [15] used short straight steel fibers to improve ductility of the normal strength 3D-printed concrete.…”

Section: Introductionmentioning

confidence: 92%

Development of a 3D-Printable Ultra-High Performance Fiber-Reinforced Concrete for Digital Construction

Arunothayan¹,

Nematollahi²,

Ranade³

et al. 2019

Preprint

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This paper presents the systematic development and performance characterization of a nonproprietary 3D-printable ultra-high-performance fiber-reinforced concrete (UHPFRC) for digital construction. Several fresh and hardened properties of the developed 3D-printable UHPFRC matrix (without fiber) and composite (with 2% volume fraction of steel fibers) were evaluated and compared to that of conventionally mold-cast UHPFRC. Additionally, the effects of testing direction on the compressive and flexural strengths of the printed UHPFRC were investigated.The fresh properties of the UHPFRC developed in this study satisfied the criteria for extrudability, buildability, and shape-retention-ability, which are relevant for ensuring printability. The printed UHPFRC exhibited superior flexural performance to the mold-cast UHPFRC due to alignment of the short fibers in the printing direction. The high compressive and flexural strengths, along with the deflection-hardening behavior, of the developed UHPFRC can enable the production of thin 3D-printed components with significant reduction or complete elimination of conventional steel bars.

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Anisotropic mechanical performance of 3D printed fiber reinforced sustainable construction material

Cited by 490 publications

References 11 publications

Anisotropy of poly(lactic acid)/carbon fiber composites prepared by fused deposition modeling

Anisotropy of poly(lactic acid)/carbon fiber composites prepared by fused deposition modeling

Automation of Robotic Concrete Printing Using Feedback Control System

Development of a 3D-Printable Ultra-High Performance Fiber-Reinforced Concrete for Digital Construction

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