Optimal lay-ups to maximize loss factor of cross-ply composite plate

Zhai, Yanchun; Liang, Shuquan

doi:10.1016/j.compstruct.2017.01.019

Cited by 21 publications

(20 citation statements)

References 40 publications

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“…The first consists of applying or mixing epoxy resin with a brush or roller into the carbon fibre layers that are stacked until reaching the thickness based on the desired resistance. Another manufacturing process consists of the use of pre-impregnated carbon fibre layers that, after being stacked, must undergo a thermal treatment in an autoclave for the activation of the resin [19]. The RBPs have a spring-like mechanical behaviour; during the first gait cycle, the prosthesis is compressed by the effect of the dynamic load of the body storing energy.…”

Section: Rbp Design and Manufacturingmentioning

confidence: 99%

Optimization of Running Blade Prosthetics Utilizing Crow Search Algorithm Assisted by Artificial Neural Networks

Javier¹,

Ramírez

Salazar

et al. 2021

SV-JME

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A crow search algorithm (CSA) was applied to perform the optimization of a running blade prosthetics (RBP) made of composite materials like carbon fibre layers and cores of acrylonitrile butadiene styrene (ABS). Optimization aims to increase the RBP displacement limited by the Tsai-Wu failure criterion. Both displacement and the Tsai-Wu criterion are predicted using artificial neural networks (ANN) trained with a database constructed from finite element method (FEM) simulations. Three different cases are optimized varying the carbon fibre layers orientations: –45°/45°, 0°/90°, and a case with the two-fibre layer orientations intercalated. Five geometric parameters and a number of carbon fibre layers are selected as design parameters. A sensitivity analysis is performed using the Garzon equation. The best balance between displacement and failure criterion was found with fibre layers oriented at 0°/90°. The optimal candidate with –45°/45° orientation presents higher displacement; however, the Tsai-Wu criterion was less than 0.5 and not suitable for RBP design. The case with intercalated fibres presented a minimal displacement being the stiffer RBP design. The damage concentrates mostly in the zone that contacts the ground. The sensitivity study found that the number of layers and width were the most important design parameters.

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Section: Rbp Design and Manufacturingmentioning

confidence: 99%

Optimization of Running Blade Prosthetics Utilizing Crow Search Algorithm Assisted by Artificial Neural Networks

Javier¹,

Ramírez

Salazar

et al. 2021

SV-JME

View full text Add to dashboard Cite

show abstract

“…The mould for preparing the composite material is made using wood material (300 × 300 × 5 mm), where the composite material is poured into the mat that includes glass material and transparent plastic material at the bottom layer with a spacer frame, shown in Figure 2. Here, hand layup (Jafari-Talookolaei et al, 2017;Zhai and Liang, 2017) moulding method is used for the fabrication of the composite material. This is a low volume and less labour intensive method used specially for preparing the composites.…”

Section: Preparation Of Mouldsmentioning

confidence: 99%

Preparation and testing of fibre reinforced <i>Zea mays</i> and <i>Calotropis gigantea</i> concrete material under various testing conditions

Sathish¹,

Mohanavel²

2019

IJRAPIDM

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This paper provides an implementation of improved modelling of fibre reinforced composites with natural fibres namely: Zea mays and Calotropis gigantea. The main aim of inducing such natural fibres to form composites is to improve its structural and water resistant properties. These natural fibres are used for improving the fibre bending stiffness that enhances the strength of the concrete composites. The proposed method uses hand layup method to prepare the solid composite under varying temperature and period. The use of randomly oriented discontinuous fibre reinforced composite is used for preparing the mould. Further, three different samples are prepared using the mould for tensile testing, impact testing and water absorption testing. This improves the structural properties, composite strength with increased fibre length, fineness without grains, uniformity and stiffness. The test results show that the proposed pattern for improving the fibre reinforced concrete composite improves well its structural and other related properties of the concrete with higher tensile and impact factors.

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“…They observed that these latter offer better damping properties when inserted at mid-plane. Zhai et al (2017) optimized the loss factor of a cross-ply composite plate including a viscoelastic layer. Using the Navier solution based on first-order shear deformation theory, they tried to maximize the damping level by varying the plate aspect ratio as well as the ratio between composite and viscoelastic layer thicknesses.…”

Section: Review Of Existing Workmentioning

confidence: 99%

Experimental and numerical damping behavior analyses of carbon/epoxy laminated plates including viscoelastic material

Pastor¹,

Sourne²,

Cartraud³

2019

Trends in the Analysis and Design of Marine Structures

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The research work presented in this paper aimed to optimize the transmittance of a wind turbine carbon/epoxy plane support by including into the laminate one or several frequency-dependent interleaved viscoelastic layers. The objective of the present study was then to optimize the damping characteristics of the support upper-plate with viscoelastic layers while keeping an acceptable bending stiffness. The optimization consisted in creating holes in the viscoelastic layer in order to facilitate the resin through layer penetration during the co-curing manufacturing process. One part of the research consisted in optimizing both the size of the holes and their repartition in the viscoelastic layer. DSC and DMA tests allowed to characterize the stiffness and damping properties of the damped composite plates in a given frequency range and resulting mechanical properties were further used to set a finite element model with the objective to simulate the overall viscoelastic composite plate receptance.

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Optimal lay-ups to maximize loss factor of cross-ply composite plate

Cited by 21 publications

References 40 publications

Optimization of Running Blade Prosthetics Utilizing Crow Search Algorithm Assisted by Artificial Neural Networks

Optimization of Running Blade Prosthetics Utilizing Crow Search Algorithm Assisted by Artificial Neural Networks

Preparation and testing of fibre reinforced <i>Zea mays</i> and <i>Calotropis gigantea</i> concrete material under various testing conditions

Experimental and numerical damping behavior analyses of carbon/epoxy laminated plates including viscoelastic material

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