Influence of the cover factor of 2D biaxial and triaxial braided carbon composites on their in-plane mechanical properties

Heieck, Frieder; Hermann, Florian; Middendorf, Peter; Schladitz, Katja

doi:10.1016/j.compstruct.2016.12.025

Cited by 34 publications

(21 citation statements)

References 9 publications

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“…Heieck et al (2017) studied the effect of cover-factor on the mechanical properties of bi-axial and triaxial braided carbon fibre composite. Results showed that cover factor has effect on the mechanical property of the braided composite, depending on the type of braid and testing direction.…”

Section: Introductionmentioning

confidence: 99%

Optimisation of optical fibre using micro-braiding for structural health monitoring

Rufai

Gautam

Potluri

et al. 2018

Journal of Intelligent Material Systems and Structures

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Structural health monitoring is a fast growing area used to assess the state of various structures such as aircraft, building, bridge, wind turbine, pipe, automobile through appropriate data processing and interpretation. This article presents a novel technique of optimising the conventional optical fibres used for structural health monitoring, in order to improve their mechanical properties, and handling during the manufacturing process by micro-braiding the optical fibres. This study investigates and compares the tensile properties of the both micro-braided optical fibre and conventional optical fibres through uniaxial tensile tests. Experimental results show 85% improvement in strain at failure for the micro-braided optical fibre when compared to the optical fibres. Moreover, interfacial shear strength comparison, of the braiding yarn, between optical fibres and micro-braided optical fibre (carried out through micro-bond test) has also been conducted. In addition, the effect of embedding both micro-braided and conventional optical fibre in composite was also investigated by three-point bend test. Overall, the mechanical performance of the composite was not affected by the presence of micro-braided optical fibre. This article will also discuss the process and the advantage of micro-braided optical fibre for structural health monitoring.

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Section: Introductionmentioning

confidence: 99%

Optimisation of optical fibre using micro-braiding for structural health monitoring

Rufai

Gautam

Potluri

et al. 2018

Journal of Intelligent Material Systems and Structures

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“…[18] proposed a non-circular braiding model in the field of automated braiding of a complex aircraft fuselage frame; Heieck et al. [19] researched the influence of cover factor; Tobias et al. [20] studied the damage and failure of triaxial braided composites; and Swery et al.…”

Section: Introductionmentioning

confidence: 99%

Prediction method for offset compensation on three-dimensional mandrel with spatial irregular shape

Meng

Yao

et al. 2019

Journal of Industrial Textiles

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In this paper, trajectory control of arbitrary shape mandrel in three-dimensional circular braiding is studied. To obtain accurate trajectory, offset of mandrel is predicted and compensated for trajectory of mandrel. Firstly, the equation of the force of all yarns on three-dimensional mandrel is given. Then offset of mandrel in single layer braiding machine is analyzed via finite element software. Learning these data via back propagation neural network algorithm, offset of mandrel at each moment is derived. The trajectory generation of three-dimensional mandrel based on offset compensation by roll pitch yaw transformation is given. Lastly, braiding angle for the mandrel is analyzed theoretically. In the practical engineering, this method is proven to effectively reduce the error of braiding angle and helpful for the precise control of the trajectory of arbitrary shape mandrel.

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“…The local fiber orientation analysis based on the eigenvalue analysis of the Gauss Hessian matrix has been successfully applied for various materials, e.g., by Heieck et al (2017); Sliseris et al (2016); Wirjadi et al (2014). However, application of this method requires the fiber thickness as an input parameter.…”

Section: Introductionmentioning

confidence: 99%

Structure Detection With Second Order Riesz Transforms

et al. 2019

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A frequently applied indicator of tubular structures is based on the eigenvalues of the Hessian matrix of the original image convolved with a Gaussian, whose standard derivation depends on the size of the tubes. Hence the tube size must either be known in advance or a whole scale of standard deviations has to be tested resulting in higher computational costs – a serious obstacle for data with varying tube thickness.In this paper, we propose to modify the structure indicator by replacing the derivatives of the Gaussian smoothed function by the Riesz transform. We show by various numerical examples that the resulting structure indicator is scale independent. Smoothing with a Gaussian is just necessary to cope with the noise in the image, but is not related to the size of the tubular structures. We apply the novel structure indicator for the fiber orientation analysis of fibrous materials and for the segmentation of leather. The latter one was a special challenging application since all scales are present in the microstructure of leather.

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Influence of the cover factor of 2D biaxial and triaxial braided carbon composites on their in-plane mechanical properties

Cited by 34 publications

References 9 publications

Optimisation of optical fibre using micro-braiding for structural health monitoring

Optimisation of optical fibre using micro-braiding for structural health monitoring

Prediction method for offset compensation on three-dimensional mandrel with spatial irregular shape

Structure Detection With Second Order Riesz Transforms

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