Effect of build orientation and raster pattern on the fracture behavior of carbon fiber reinforced polymer composites fabricated by additive manufacturing

Zhang, Ziyang; Yavas, Denizhan; Liu, Qingyang; Wu, Dazhong

doi:10.1016/j.addma.2021.102204

Cited by 21 publications

(19 citation statements)

References 19 publications

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“…Given the discretized nature of our problem, we reformulate the optimization problem (7) as the following regularized…”

Section: Print Trajectory Optimizationmentioning

confidence: 99%

“…Based on the printing material, design geometry, printing machine, and other parameters, the design geometry is often oriented to maximize mechanical properties of interest, which may be dimensional requirements, or mechanical strength conditions [3,4,5,6]. While 2.5D FFF printing provides material and geometry flexibility as a manufacturing process, the layer-wise processing of the parts in a fixed horizontal plane may limit the mechanical performance of the printed parts [7,8], as the inter-layer interfaces are prone to failures [9,10]. For example, if there is oblique loading, or if the printed part does not follow a simple planar surface, the stress flow often crosses through the inter-layer bonding locations creating premature failures under loading.…”

Section: Introductionmentioning

confidence: 99%

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Stress Flow Guided Non-Planar Print Trajectory Optimization for Additive Manufacturing of Anisotropic Polymers

Guidetti¹,

Balta²,

Nagel³

et al. 2023

Preprint

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When manufacturing parts using material extrusion additive manufacturing and anisotropic polymers, the mechanical properties of a manufactured component are strongly dependent on the print trajectory orientation. We conduct non-planar slicing and optimize the print trajectories to maximize the alignment between the material deposition direction and the stress flow induced by a predefined load case. The trajectory optimization framework considers manufacturability constraints in the form of uniform layer height and line spacing. We demonstrate the method by manufacturing a load bearing mechanical bracket using a 5-axis 3D printer and a liquid crystal polymer material.The failure strength and stiffness of the optimized bracket are improved by a factor of 44 and 6 respectively when compared with conventional printing.

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“…Given the discretized nature of our problem, we reformulate the optimization problem (7) as the following regularized…”

Section: Print Trajectory Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stress Flow Guided Non-Planar Print Trajectory Optimization for Additive Manufacturing of Anisotropic Polymers

Guidetti¹,

Balta²,

Nagel³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The authors have concluded that fracture energy depends on build orientation and raster angle. 122 Studies have also shown that extrusion width also affects the mechanical performance of 3D-printed CFRPs. Narrow extrusions favor fiber alignment in the printing direction.…”

Section: Tensile Propertiesmentioning

confidence: 99%

“…The study has shown that samples with the XYZ and ZXY build orientations showed 5‐times improved fracture energy compared to the samples with the XZY build orientation. The authors have concluded that fracture energy depends on build orientation and raster angle 122 . Studies have also shown that extrusion width also affects the mechanical performance of 3D‐printed CFRPs.…”

Section: Mechanical Properties Of Additively Manufactured Cfrpsmentioning

confidence: 99%

A review on additive manufacturing of carbon fiber‐reinforced polymers: Current methods, materials, mechanical properties, applications and challenges

Adil

Lazoğlu

2022

J of Applied Polymer Sci

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Additive manufacturing has new revolutionary potential for carbon fiber‐reinforced polymers (CFRPs). Additive manufacturing of CFRPs combines the advantages of additive manufacturing such as customization, minimal wastage, low cost, fast prototyping and rapid manufacturing with high specific strength of carbon fiber. This article delivers a comprehensive review of additive manufacturing of short and continuous CFRPs. The article presents insight into different additive manufacturing techniques with an overview of commercially available methods for manufacturing short and continuous CFRPs. This review also includes mechanical characterization and analytical techniques discussed in the literature for CFRPs. The robust applications of short and continuous CFRPs in biomedical, electronics, and aerospace would highlight the importance of research and development in this field. In the end, drawbacks, recent innovations, and the future research directions underline the gap between research and commercialization of additive manufacturing of short and continuous CFRPs.

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“…However, these synthetic fibers also have some disadvantages, such as high price and non-recyclability, which make them neither economic nor conducive to environmental protection and sustainable development [ 11 , 12 ]. In addition, the energy consumed in the manufacturing process of synthetic fibers is not renewable, and a certain amount of carbon dioxide is released, which also causes environmental problems [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Study on Axial Compression Behavior of Concrete Short Columns Confined by Flax/Glass Fiber Hybrid-Reinforced Epoxy Resin Composites

2022

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In this study, we aimed to explore the effect of concrete short columns confined by flax/glass fiber hybrid-reinforced epoxy resin (FFRP/GFRP) composites. Taking the same fiber hybrid ratio and different paving orders as parameters, analysis of the axial compressive mechanical properties of eight groups of FFRP/GFRP composite-confined concrete short columns, including one group of flax fiber-reinforced epoxy resin (FFRP) composite-confined concrete short columns and one group of unconstrained concrete short column, was conducted. The effects of different layering sequences on failure modes, load–displacement curves, energy dissipation ductility and the stress–strain relationship of hybrid composite-confined concrete short columns were analyzed. The results show that the axial compression failure modes of FFRP/GFRP composite-confined concrete short columns with the same hybrid ratio and different paving sequences were basically the same, and the CC-H6 group was the most prominent. The ultimate bearing capacity and axial deflection were 91.05% and 11.49% higher than those of the control group (CC-FFRP), and the energy dissipation coefficient was also the largest, at 9.79. The failure trend of the stress–strain curve of the confined concrete short column specimens was basically the same, and the stress and axial strain of the members were increased by 247.9~292.5% and 486.7~701.0%, respectively.

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Effect of build orientation and raster pattern on the fracture behavior of carbon fiber reinforced polymer composites fabricated by additive manufacturing

Cited by 21 publications

References 19 publications

Stress Flow Guided Non-Planar Print Trajectory Optimization for Additive Manufacturing of Anisotropic Polymers

Stress Flow Guided Non-Planar Print Trajectory Optimization for Additive Manufacturing of Anisotropic Polymers

A review on additive manufacturing of carbon fiber‐reinforced polymers: Current methods, materials, mechanical properties, applications and challenges

Study on Axial Compression Behavior of Concrete Short Columns Confined by Flax/Glass Fiber Hybrid-Reinforced Epoxy Resin Composites

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