Additive manufacturing of composite materials and functionally graded structures using selective heat melting technique

Markandan, Kalaimani; Lim, Ruijing; Kanaujia, Pawan K.; Seetoh, Ian P.; Rosdi, Muhammad; Tey, Zhi Huey; Goh, Jun Seng; Lam, Yee Cheong; Lai, Chang Quan

doi:10.1016/j.jmst.2019.12.016

Cited by 21 publications

(3 citation statements)

References 60 publications

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“…Some of them focused on the analysis of the production process of these materials as well as on the modelling and simulation of the process [2][3][4][5][6] while others turned their attention to the inevitably generated residual stresses of FGMs due to thermal mismatch of each basic material using experimental and analytical methods [7,8] or their characterization [1]. Over time, a number of techniques have been developed in order to obtain FGMs: Powder metallurgy, vapor deposition, solid free form fabrication, centrifugal casting, and additive manufacturing [9,10].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Aluminum Alloy–Silicon Carbide Functionally Graded Materials Developed by Centrifugal Casting Process

et al. 2021

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The continuous development of modern industries rises the necessity for functionally graded materials. This research starts from the consideration that the incorporation of SiC particles in the molten aluminum alloy can be difficult due to the very low wettability of SiC particles. In order to increase their wettability, SiC particles were covered with a layer of metallic copper. The incorporation of SiC particles into the aluminum alloy mass was performed by centrifugal casting. The secondary hypoeutectic Al-Si alloy used in this study was elaborated within the crucible of a resistors heated furnace. The metallic coating of SiC particles, in addition to the effect of increasing their wettability by molten metal, also has a role in preventing the formation of aluminum carbide in case of heating above 700 °C. A great amount of attention was paid to the parameters used during the centrifugal casting process. The results showed that adjusting the proportion of SiC particles within the composite allows us to obtain values of the thermal expansion coefficient within previously established limits. The present work demonstrates that the coating of SiC particles covered with a thin layer of metallic Cu creates the conditions to easily incorporate them into the molten Al mass, thus obtaining FGMs with controlled properties.

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Section: Introductionmentioning

confidence: 99%

Characterization of Aluminum Alloy–Silicon Carbide Functionally Graded Materials Developed by Centrifugal Casting Process

et al. 2021

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“…After the plasma was treated, cracks, pits, and grooves appeared on the surface of the UHMWPE fibers. Although these defects reduced the tensile strength of the monofilament, they increased the interface performance between the fiber and matrix [ 24 ]. After the PPy grafting process, the microscopic defects on the monofilament surface could be repaired to a certain extent.…”

Section: Resultsmentioning

confidence: 99%

Superior Enhancement of the UHMWPE Fiber/Epoxy Interface through the Combination of Plasma Treatment and Polypyrrole In-Situ Grown Fibers

et al. 2023

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Obtaining a robust fiber/matrix interface is crucial for enhancing the mechanical performance of fiber-reinforced composites. This study addresses the issue by presenting a novel physical–chemical modification method to improve the interfacial property of an ultra-high molecular weight polyethylene (UHMWPE) fiber and epoxy resin. The UHMWPE fiber was successfully grafted with polypyrrole (PPy) for the first time after a plasma treatment in an atmosphere of mixed oxygen and nitrogen. The results demonstrated that the maximum value of the interfacial shear strength (IFSS) of the UHMWPE fiber/epoxy reached 15.75 MPa, which was significantly enhanced by 357% compared to the pristine UHMWPE fiber. Meanwhile, the tensile strength of the UHMWPE fiber was only slightly reduced by 7.3%, which was furtherly verified by the Weibull distribution analysis. The surface morphology and structure of the PPy in-situ grown UHMWPE fibers were studied using SEM, FTIR, and contact angle measurement. The results showed that the enhancement of the interfacial performance was attributed to the increased fiber surface roughness and in-situ grown groups, which improved the surface wettability between the UHMWPE fibers and epoxy resins.

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“…There are several methods of producing porous cellular materials, including direct foaming (introduction of air/ gas bubbles) [16,22,23], dealloying of solid solutions (selective dissolution of one metal in an alloy to form pores) [24,25], 3D printing (layer by layer addition of material at precise spatial positions) [26][27][28][29][30] and powder compaction, where loose particles in the form of fine powder are fused together to form a desired geometry through the application of heat and/ or pressure [6,31,32]. Spacer particles, which are removed in a subsequent processing step, can be added to the functional particles to increase the porosity of the part [21].…”

Section: Introductionmentioning

confidence: 99%

Influence of microstructure topology on the mechanical properties of powder compacted materials

Lai

Seetoh

2021

International Journal of Mechanical Sciences

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Additive manufacturing of composite materials and functionally graded structures using selective heat melting technique

Cited by 21 publications

References 60 publications

Characterization of Aluminum Alloy–Silicon Carbide Functionally Graded Materials Developed by Centrifugal Casting Process

Characterization of Aluminum Alloy–Silicon Carbide Functionally Graded Materials Developed by Centrifugal Casting Process

Superior Enhancement of the UHMWPE Fiber/Epoxy Interface through the Combination of Plasma Treatment and Polypyrrole In-Situ Grown Fibers

Influence of microstructure topology on the mechanical properties of powder compacted materials

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