Geometrical modeling of near-net shape braided preforms

Rawal, Amit; Gupta, Srijan; Saraswat, Harshvardhan; Sibal, Apurv

doi:10.1177/0040517514559587

Cited by 24 publications

(15 citation statements)

References 13 publications

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“…In the modeling works of several authors 1,5,11,12 appears a small mistake in the models of the regular braids only, recognizable by experienced braiders only. These cannot be produced on any ''classical normal'' maypole braiding machine with horn gears.…”

Section: Three-dimensional Models Of Braids With Floating Length Of Two (Regular Braids)mentioning

confidence: 99%

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Generalized geometric modeling of tubular and flat braided structures with arbitrary floating length and multiple filaments

Kyosev

2015

Textile Research Journal

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This paper provides a critical overview about the state of the art in the area of three-dimensional modeling of braided structures. It gives a generalized geometrical approach for modeling braided structures with arbitrary floating length and filaments in the yarn. The approach is tested with large set of structures of different types. Subsequently, one of the simulated geometries is compared with the real geometry of braided tube.

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Section: Three-dimensional Models Of Braids With Floating Length Of Two (Regular Braids)mentioning

confidence: 99%

“…For the ones that drive in a clockwise direction, the sign of a/2 and the phase in the sinus function regions is changed. 11 Rawal et al 12 extend the equations for the case of a mandrel of conical cross-section and parts that consist of a combination of cylindrical and conical regions.…”

Section: State Of the Artmentioning

confidence: 99%

Generalized geometric modeling of tubular and flat braided structures with arbitrary floating length and multiple filaments

Kyosev

2015

Textile Research Journal

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“…6 Simple geometrical models of strand paths have been extended to develop computer aided design (CAD) models of circular biaxial braids. [7][8][9][10][11] However, some of these models have neglected local sinusoidal variations. Nevertheless, the geometrical model of hybrid biaxial braids was proposed by considering the strand following a helical path.…”

Section: Biaxial Braided Structuresmentioning

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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“…By combining the accuracy of the optical Bragg grating sensor with 3D fabric modular processing in a braiding method [ 16 , 17 ] complicated structures can be measured, and the sensor application can be diversified by presenting the possibility of applying the fabrication to the monitoring measurement method. In the past, hard epoxy molding or epoxy adhesion have been applied for the application of the linear tensile stress–strain response fbg sensor.…”

Section: Introductionmentioning

confidence: 99%

Braided Fabrication of a Fiber Bragg Grating Sensor

Lee

2020

Sensors

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Our objective was to construct textile braiding manufacturing methods to facilitate high precision and accurate measurements using optical fiber Bragg grating sensors for various structures. We aimed to combine three-dimensional (3D) braiding processing with the optical Bragg grating sensor’s accurate metrology. Outside the limits of the sensor’s epoxy attachment methods, the textile braiding method can diversify the scope of application. The braiding process can be used to design a 3D fabric module process for multiple objective mechanical fiber arrangements and material characteristics. Optical stress–strain response conditions were explored through the optimization of design elements between the Bragg grating sensor and the braiding. Here, Bragg grating sensors were located 75% away from the fiber center. The sensor core structure was helical with a 1.54 cm pitch, and a polyurethane synthetic yarn was braided together with the sensor using a weaving machine. From the prototype results, a negative Poisson’s ratio resulted in a curled braided Bragg grating sensor. The number of polyurethane strands was studied to determine the role of wrap angle in the braiding. The 12-strands condition showed an increase in double stress–strain response rate at a Poisson’s ratio of 1.3%, and the 16-strands condition was found to have noise affecting the sensor at a Poisson’s ratio of 1.5%. The findings suggested the application of braiding fabrication to the Bragg grating sensor could help to develop a new monitoring sensor.

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Geometrical modeling of near-net shape braided preforms

Cited by 24 publications

References 13 publications

Generalized geometric modeling of tubular and flat braided structures with arbitrary floating length and multiple filaments

Generalized geometric modeling of tubular and flat braided structures with arbitrary floating length and multiple filaments

Tensile response of braided structures: a review

Braided Fabrication of a Fiber Bragg Grating Sensor

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