Study On The Mechanical Properties Of Natural PLA And PLA Composites Fabricated By 3D Printing

Habeeb, Hiyam Adil (2016) Study On The Mechanical Properties Of Natural PLA And PLA Composites Fabricated By 3D Printing. Masters thesis, Universiti Teknikal Malaysia Melaka.

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Fused deposition modeling (FDM) as one of the additive manufacturing process is generally considered as a technique for the creation of a 3D model. Recently, the availability and affordability were improved to a great extent, resulting from the continuous progress and technique enhancement. Although the prototyping processes have enlarge within wide range in productivities, but it is still restricted by the affecting variables which is the optimum design and characteristics. Traditionally, a part was fabricated in limited types only, like the thermoplastics materials which include PLA (poly lactic acid) and ABS (acrylonitrile-butadiene-styrene). In order to achieve a wide range of FDM process, pure materials were merged with metal powder to exhibit new improved properties. Therefore, the current study investigates the properties of metal powder I PLA composite fabricated by FDM. The study weighs upon the properties of a new polymer/metal powder composite tested with various modeling parameters including the layer height and printing speed. The metal in the current study was a result of the use of a mixing between metal powder with polymer. Furthermore, PLA composites were consist of metallic powder for aluminum, copper and bronze in addition to natural PLA. The mechanical properties for the PLA composites were investigated related to the specific properties of porosity and surface roughness, the resulted properties were compared with the natural PLA results. The found results shows that the highest tensile strength values were in the natural PLA of range from 49.86 MPa to 30.79 MPa while the lowest value of the tensile strength were in PLA composites of36.98 MPa to 29.74 MPa. Apart from that, the results also indicated that the PLA composites produced porosity less than it does in natural PLA. Also, the surface roughness for both natural PLA and PLA composites produced through the implementation of the FDM technique shows that the natural PLA produced better surface roughness in comparison to the PLA composites. Finally, the results shows that printed specimen using low-cost open source Rep Rap 3D printers were recognized with satisfactory tensile strength and porosity properties.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Reinforced plastics, Polymers -- Mechanical properties, Polylactic acid
Subjects: T Technology > T Technology (General)
T Technology > TP Chemical technology
Divisions: Library > Tesis > FKM
Depositing User: Nor Aini Md. Jali
Date Deposited: 13 Jul 2017 07:42
Last Modified: 13 Jul 2017 07:42
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