Experimental Investigation on the Effect of Carbon Fiber Reinforcements in the Mechanical Resistance of 3D Printed Specimens

In the last years, fiber-reinforced polymer composites have been under study for additive manufacturing. For this purpose, it is important to assess the behavior of these materials in terms of mechanical properties. The present experimental study evaluates the mechanical resistance of both PLA and c...

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Bibliographic Details
Published in:Applied composite materials 2022-06, Vol.29 (3), p.937-952
Main Authors: Calles, A. F., Carou, D., Ferreira, R. T. Luiz
Format: Article
Language:English
Subjects:
Carbon fibers
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Design of experiments
Factorial design
Fiber reinforced plastics
Fiber reinforced polymers
Fiber reinforcement
Industrial Chemistry/Chemical Engineering
Materials Science
Mechanical properties
Polymer matrix composites
Polymer Sciences
Tensile strength
Three dimensional printing
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Summary:In the last years, fiber-reinforced polymer composites have been under study for additive manufacturing. For this purpose, it is important to assess the behavior of these materials in terms of mechanical properties. The present experimental study evaluates the mechanical resistance of both PLA and carbon fiber reinforced PLA. The work used a full factorial Design of Experiments (108 tests) selecting as factors the infill density, infill pattern, material, number of perimeters and printing orientation. The main results highlight that the most influential factors on the tensile strength are both type of material and number of perimeters. In this study, the use of reinforcements did not improve the mechanical resistance attained by the corresponding virgin material. Particularly, for some selected specimens, the porosity measured in the fracture section is larger for the reinforced PLA specimens, so they showed a smaller cross-section.
ISSN:0929-189X
1573-4897
DOI:10.1007/s10443-021-09996-7