Journal ArticleDOI
Additive manufacturing of PLA structures using fused deposition modelling: Effect of process parameters on mechanical properties and their optimal selection
TLDR
In this article, the effect of build orientation, layer thickness and feed rate on the mechanical performance of PLA samples manufactured with a low-cost 3D printer is investigated, where tensile and three-point bending tests are carried out to determine the mechanical response of the printed specimens.About:
This article is published in Materials & Design.The article was published on 2017-06-15. It has received 877 citations till now. The article focuses on the topics: Ductility.read more
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Polymers for 3D Printing and Customized Additive Manufacturing
TL;DR: Polymers are by far the most utilized class of materials for AM and their design, additives, and processing parameters as they relate to enhancing build speed and improving accuracy, functionality, surface finish, stability, mechanical properties, and porosity are addressed.
Journal ArticleDOI
FDM process parameters influence over the mechanical properties of polymer specimens: A review
TL;DR: In this paper, the most significant process parameters considered as influencing FDM specimens' tensile, compression, flexural or impact strengths are discussed considering the results presented in the literature, and a necessary distinction between the mechanical properties of material and testing specimens and the mechanical behavior of a FDM end part is also made.
Journal ArticleDOI
Mechanical Characterizations of 3D-printed PLLA/Steel Particle Composites.
TL;DR: The results showed that the interphase layer provided a smooth transition of elastic modulus from steel particles to the polymeric matrix, and a 10% volume fraction of steel particles could enhance the elasticModulus of PLLA polymer by 31%.
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FDM-Based 3D Printing of Polymer and Associated Composite: A Review on Mechanical Properties, Defects and Treatments.
TL;DR: The most common defects on printed parts, in particular the void formation, surface roughness and poor bonding between fibre and matrix, are explored and an inclusive discussion on the effectiveness of chemical, laser, heat and ultrasound treatments to minimize these drawbacks is provided.
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Characterization of 3D printed long fibre reinforced composites
TL;DR: In this article, the additive layer manufacturing (ALM) process is used in the present investigation to manufacture long fibre reinforced composite parts using the MarkOne® 3D-printer, and the results showed that the obtained mechanical properties for ALM composites are not yet comparable to those obtained by traditional methods (pre-pregs).
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Analytical and experimental investigation on elastic modulus of reinforced additive manufactured structure
TL;DR: In this paper, an analytical method based on the Rule of Mixture (RoM) equation was proposed to predict the elastic modulus of reinforced AM structure and the experimental results showed that addition of reinforcement enhanced the elastic model significantly and the improvement in elastic model was between 6.79% and 21.03%.
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Railroad inspection based on ACFM employing a non-uniform B-spline approach
TL;DR: In this paper, a non-uniform B-spline approximation is employed to calculate the exact positions and the dimensions of the defects, which can be applied for the accurate and reliable detection of surface breaking defects at high inspection speeds.
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Numerical and analytical method for the design of piezoelectric modal sensors/actuators for shell‐type structures
TL;DR: In this article, the problem of designing distributed piezoelectric modal sensors/actuators for cylindrically curved panels is treated as an optimization problem where the design variable is a function (the polarization profile of the electrode) that takes on three values only: −1 (negative polarization), 0 (zero polarization or no polarization material), 1 (positive polarization), and the objective function is connected with the frequency response of the transducer.
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Integration of topology optimized designs into CAD/CAM via an IGES translator
TL;DR: A software tool that converts any two-dimensional black and white image into a CAD/CAM file in IGES format that allows to solve the interoperability issue between numeric is the IGES translator code lacking in most used numerical computation software packages.
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Detection and evaluation of damage in aircraft composites using electromagnetically coupled inductors
TL;DR: In this article, a non-contact EM sensor with coupled spiral inductors (CSI) is employed to detect both impact induced and simulated damage leading to an accurate evaluation of the location, depth and width of sub-surface defects.