Permeability characterization of stitched carbon fiber preforms by fiber optic sensors

Antonucci, Vincenza; Esposito, Mauro; Ricciardi, M.R.; Raffone, Marco; Zarrelli, Mauro; Giordano, M.

doi:10.3144/expresspolymlett.2011.105

Cited by 22 publications

(12 citation statements)

References 32 publications

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“…During numerous research works, influences on the permeability of textile semi-finished products like woven or non-crimp fabrics have been examined. Especially, variations of textile architecture (stitch-bonding parameters for non-crimp fabrics [13][14][15][16][17] and weaving patterns as well as roving/fiber type for woven fabrics, preforming-related parameters like draping and shearing, [18][19][20][21][22][23] sewing [24][25][26] and binder application [27][28][29] can have a large impact on in-plane as well as out-of-plane permeability. Studies have shown that textiles with nearly identical mechanical properties can exhibit strongly varying permeability values up to the point where the injection time varies by a factor of 200.…”

Section: Test Planmentioning

confidence: 99%

Maximizing the out-of-plane-permeability of preforms manufactured by dry fiber placement

Rimmel

Becker

Mitscháng

2016

Advanced Manufacturing: Polymer & Composites Science

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Dry fiber placement (DFP) is a technology which enables outstandingly high mechanical performance of composite parts as preform structures with load-related fiber orientations can be created with minimum of fiber crimp. Furthermore, DFP has high cost-saving potential due to minimum material wastage during production. Recently, the efficiency has been further improved using an online binder application system, allowing the direct usage of untreated rovings instead of pre-designed rovings with binder applied by the manufacturer. Nevertheless, the poor impregnation behavior of DFP-preforms during liquid composite molding processing methods remains a main challenge. Encouraging an out-of-plane impregnation, e.g. by using a vacuum-assisted or compression resin transfer molding process, reduces the flow length within the preform and is a first step toward reducing cycle times. However, further improvements are required in order to apply DFP-preforming methods in serial production.Within this study influences on the out-of-plane permeability of DFP-preforms were investigated. The considered parameters were related to the material (e.g. binder amount) as well as the layup process and subsequent process steps.

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Section: Test Planmentioning

confidence: 99%

Maximizing the out-of-plane-permeability of preforms manufactured by dry fiber placement

Rimmel

Becker

Mitscháng

2016

Advanced Manufacturing: Polymer & Composites Science

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“…Compared to electric sensors, they have several advantages: they are not disturbed by electromagnetic waves (e.g., radio waves, background radiation), therefore they do not need electromagnetic shielding, and optical fibers does not produce electromagnetic interference, either [ 7 , 8 ]. Their material is highly corrosion-resistant and can withstand high temperatures, therefore the sensor can be used for monitoring the manufacturing process [ 9 , 10 ] and structural health monitoring of composites [ 11 ] or even civil structures [ 12 ]. The sensors can be easily installed due to their small size, small mass, and flexibility.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Light Transmission Ability of Reinforcing Glass Fibers Used in Polymer Composites

2017

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This goal of our research was to show that E-glass fiber bundles used for reinforcing composites can be enabled to transmit light in a common resin without any special preparation (without removing the sizing). The power of the transmitted light was measured and the attenuation coefficient, which characterizes the fiber bundle, was determined. Although the attenuation coefficient depends on temperature and the wavelength of the light, it is independent of the power of incident light, the quality of coupling, and the length of the specimen. The refractive index of commercially available transparent resins was measured and it was proved that a resin with a refractive index lower than that of the fiber can be used to make a composite whose fibers are capable of transmitting light. The effects of temperature, compression of the fibers, and the shape of fiber ends on the power of transmitted light were examined. The measurement of emitted light can provide information about the health of the fibers. This can be the basis of a simple health monitoring system in the case of general-purpose composite structures.

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“…Incorporating optical fibers during carbon fibre based preform fabrication itself is promising and has been reported earlier [ 24 ]. In this method optical fibers were stitched into each fiber preform along the middle plane of the laminate.…”

Section: Composite Materials With Embedded Fiber Sensors: Fabricatmentioning

confidence: 99%

Overview of Fiber Optic Sensor Technologies for Strain/Temperature Sensing Applications in Composite Materials

Ramakrishnan¹,

Rajan

Semenova³

et al. 2016

Sensors

285

124

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This paper provides an overview of the different types of fiber optic sensors (FOS) that can be used with composite materials and also their compatibility with and suitability for embedding inside a composite material. An overview of the different types of FOS used for strain/temperature sensing in composite materials is presented. Recent trends, and future challenges for FOS technology for condition monitoring in smart composite materials are also discussed. This comprehensive review provides essential information for the smart materials industry in selecting of appropriate types of FOS in accordance with end-user requirements.

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Permeability characterization of stitched carbon fiber preforms by fiber optic sensors

Cited by 22 publications

References 32 publications

Maximizing the out-of-plane-permeability of preforms manufactured by dry fiber placement

Maximizing the out-of-plane-permeability of preforms manufactured by dry fiber placement

Analysis of the Light Transmission Ability of Reinforcing Glass Fibers Used in Polymer Composites

Overview of Fiber Optic Sensor Technologies for Strain/Temperature Sensing Applications in Composite Materials

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