Prediction Method for Temporal Change in Fiber Orientation on Cylindrical Braided Preforms

Nishimoto, Hiroyuki; Ohtani, Akio; Nakai, Asami; Hamada, Hiroyuki

doi:10.1177/0040517509352523

Cited by 22 publications

(14 citation statements)

References 11 publications

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“…It was made sure that the process was in steady state to avoid non-prescribed transient braid angles [13]. For this purpose, a distance of 500 mm was overbraided and the braid angle was asserted to be 60 degrees using a goniometer.…”

Section: Methodsmentioning

confidence: 99%

A yarn interaction model for circular braiding

Ravenhorst

Akkerman

2016

Composites Part A: Applied Science and Manufacturing

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Machine control data for the automation of the circular braiding process has been generated using previously published mathematical models that neglect yarn interaction. This resulted in a significant deviation from the required braid angle at mandrel cross-sectional changes, likely caused by an incorrect convergence zone length, in turn caused by this neglect. Therefore the objective is to use a new model that includes the yarn interaction, assuming an axisymmetrical biaxial process with a cylindrical mandrel and Coulomb friction. Experimental validation with carbon yarns and a 144 carrier machine confirms a convergence zone length decrease of 25% with respect to a model without yarn interaction for the case analyzed, matching the model prediction using a coefficient of friction of around 0.3.

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Section: Methodsmentioning

confidence: 99%

A yarn interaction model for circular braiding

Ravenhorst

Akkerman

2016

Composites Part A: Applied Science and Manufacturing

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“…У роботі [18] описана методика прогнозування структурних параметрів композитів на основі плетених рукавів -кута армування та об'ємного вмісту волокон. Авторами ряду робіт [19,20] розроблені комп'ютерні системи, які дозволяють визначати величину кута армування плетених преформ. Точність таких обчислень підтверджена результатами аналізу зображень плетених структур із заданими параметрами [21].…”

Section: аналіз останніх досліджень і публікаційunclassified

Forecasting Characteristics of Composite Strength on the Basis of Preforms in Elements of Building Structures

Kondratiev

Andrieiev²

2020

MEC

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Currently, wicker composite structures for various purposes are widely used in many industries. The use of such preforms allows to provide the possibility of automation of production, high speed and efficiency of the process of manufacturing polymeric composite materials and structures based on them. Knowledge of their properties allows you to optimize the production of structures with the necessary parameters during design. In the article the model of composite material on the basis of wicker reinforcement was further developed. For the practical implementation of this model, it is sufficient to test material samples with three different angles between the harnesses, for example, ± 30º, ± 45º and ± 60º. A mathematical description of the model is given. The model made it possible to predict the physical and mechanical characteristics of the composite material when it is laid out on curved surfaces. At the same time some fictitious limits of durability of a composite are defined. This is due to the fact that each value of the angle between the harnesses corresponds to its physical and mechanical characteristics of the unidirectional composite material. In this case, the ultimate strength curves necessarily pass through the points corresponding to the experimental data. The article shows that the possible deviations of the strength limits in the range of angles between the harnesses will lie within the range of characteristics obtained by testing. The article shows that in the realized interval of angles between the harnesses, almost any polynomial criterion of strength will accurately describe the strength of the composite reinforced with a braided sleeve. The obtained parameters, in contrast to the existing ones, allow to predict the strength characteristics of the composite on the basis of braided sleeves depending on the positioning and location of the material on the forming surface. The obtained results are the basis for solving the problems of calculating the strength of building structures from composite materials based on wicker preforms.

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“…According to Nishimoto et al, 40 the step response of the braid angle () can be computed based upon the following equation:…”

Section: Kinematics and Mechanics Of Braid Formation And Its Geometrical Relationship With Microstructurementioning

confidence: 99%

Tensile response of braided structures: a review

Rawal

Saraswat

Sibal

2015

Textile Research Journal

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Braiding is a highly versatile and cost-effective method of producing structures that has been successfully used for numerous applications ranging from ropes, composites, biomedical uses, insulation to sports and recreation activities, and the list of applications of braided structures is ever-increasing. The prediction of tensile property is a pre-requisite for the success of deployment of braided structures in these applications. This paper reviews the key parameters that control the tensile properties of biaxial and triaxial braided structures along with the models developed for these braids by various researchers with different fields of interest. In general, the tensile properties of braided structures are strongly dependent upon their architecture and the kinematics and mechanics involved in the braid formation. Furthermore, various approaches and methodologies have also been presented for the tensile models of braids consisting of an elastic core and multi-layered structures.

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Prediction Method for Temporal Change in Fiber Orientation on Cylindrical Braided Preforms

Cited by 22 publications

References 11 publications

A yarn interaction model for circular braiding

A yarn interaction model for circular braiding

Forecasting Characteristics of Composite Strength on the Basis of Preforms in Elements of Building Structures

Tensile response of braided structures: a review

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