Clean and environmentally friendly wet-filament winding

Shotton-Gale, N.; Harris, Don; Pandita, SD; Paget, MA; Allen, Jill; Fernando, Gerard Franklyn

doi:10.1533/9781845697662.4.331

Cited by 6 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the lowest level of the “fiber tension”, the free space between the filaments is more in fiber bundle and the resin can easily infiltrate among the filaments. Transverse impregnation of the fiber bundle depends upon the thickness of the fiber bundle . For low values of the “fiber tension”, as the fiber bundle is widened (along with the decrease in the thickness), the transverse impregnation occurs better which facilitates the load transfer from the resin to the fibers and increases the structure strength.…”

Section: Resultsmentioning

confidence: 99%

Buckling strength optimization of fabrication factors of composite lattice cylinders using experimental‐statistical method (Taguchi)

et al. 2018

View full text Add to dashboard Cite

The effects of fabrication factors on the maximum buckling strength of composite lattice cylinders using experimental–statistical method are investigated. Composite lattice cylinders are fabricated using a silicone rubber mandrel, an automatic filament winding machine and autoclave. Design of experiments has been done using the Taguchi method and the orthogonal array L9 is used. The effects of four fabrication factors including “fiber tension”, “winding speed”, “cure cycle”, and “type of fiber” (Aramid, Glass, Carbon) are considered, separately, on the two response variables including the “specific maximum carried load” (SMCL) and the “compressive efficiency” (CE) of the structure. The analysis of the test results is done by analysis of variance. The results indicate that the factors “type of fiber” and “fiber tension” have predominant effects on the SMCL response variable, respectively, and the effects of the two factors “winding speed” and “cure cycle” are not significant. Also, the factors “type of fiber”, “fiber tension”, and “winding speed” are more effective factors on the CE response variable, respectively, and the effect of the factor “cure cycle” is insignificant. In this research, the optimization of the fabrication factors is carried out for the response variable CE. For validation purpose, the result from the buckling test of the optimum fabricated sample is checked to be fallen within the estimated range predicted using the Taguchi method. After optimization of the fabrication factors, it is observed that the buckling strength of the composite lattice cylinder made of Glass/Epoxy is possible to be increased up to 144%. POLYM. COMPOS., 40:1850–1861, 2019. © 2018 Society of Plastics Engineers

show abstract

Section: Resultsmentioning

confidence: 99%

Buckling strength optimization of fabrication factors of composite lattice cylinders using experimental‐statistical method (Taguchi)

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Spreading is understood as the increase of the fiber bandwidth with simultaneous reduction of the fiber band height. [ 19 ] The degree of spread s can be specified as a measure of the spread between two measuring points (MP), see (Equation ()). [ 20 ] Due to the normal force stress ( F N ), which results from the applied fiber band tension ( F ) on a given surface, the upper filaments in the fiber band are pressed between the lower ones, pushing them to the side.…”

Section: State Of the Artmentioning

confidence: 99%

“…[ 21 ] The extent of spreading is determined by the spreading devices used, their diameters, their arrangement and, for example, the delivery form of the rovings, the tex number of the roving, the resin loading and the process parameters of, for example, fiber band tension and winding speed. [ 19 ] The final width with which the fiber band arrives at the deposition roll varies due to production‐related tolerances in the starting material and fluctuations in the influencing variables mentioned. [ 21 ] On the other hand, spreading can occur when or after the fiber band is deposited on the winding core.…”

Section: State Of the Artmentioning

confidence: 99%

Impact of winding parameters on the fiber bandwidth in the cylindrical area of a hydrogen pressure vessel for generating a digital twin

et al. 2022

View full text Add to dashboard Cite

The wet winding process is an established manufacturing technology for the production of rotationally symmetrical components made of fiber‐reinforced plastic (FRP), such as type‐IV hydrogen pressure vessels. In this process, the FRP laminate is produced by continuously depositing an impregnated fiber band on the winding core in a winding pattern adapted to the component stress. Despite a long history of the process, there are shortcomings in the understanding of the process, without which further optimization in terms of cost and material efficiency will reach its limits in the future. Currently, the fiber band is assumed to have a constant rectangular cross‐section in most simulations, which neglects manufacturing influences such as fiber spreading. The investigations carried out aim to extend the process understanding by a realistic description of the fiber bandwidth when deposited on the winding core. The investigations show that the fiber spreading, as well as the absolute fiber bandwidth, depend on the resin loading and the fiber band tension, independent of the winding pattern in the cylindrical area of a pressure vessel shaped winding core. In addition, the fiber bandwidth changes by 15%–20% during circumferential winding, depending on the machine movement.

show abstract

“…[8][9][10][11] A different set of modifications, referred to as 'clean filament winding', have also been reported in detail. [12][13][14][15][16][17] The reduction of waste (resin, solvent) and fewer emissions to the atmosphere are emphasized in these works. The resin bath is replaced with a combination of a resin impregnation unit and spreading stations for tow bundles.…”

Section: Filament Windingmentioning

confidence: 99%

“…Void fractions below 3% were measured for individual tows by Miaris et al 9,10 The optimized impregnation unit in Miaris et al 11 reported < 2% void fraction, and the voids were mainly located at the edges of tows. Another group 12 noted that the largest degree of fibre spreading (i.e. making the tows the widest) produced the lowest void content.…”

Section: Void Content and Its Distributionmentioning

confidence: 99%

The effect of processing on the microstructure of hoop-wound composite cylinders

Lasn

Mulelid

2020

Journal of Composite Materials

View full text Add to dashboard Cite

Fibre-reinforced polymer composites are increasingly used to make pipes and pressure vessels. The relationship between wet-winding manufacturing, composite microstructure, and the mechanical performance is complex due to many process parameters and material properties involved. Efficient manufacturing aspirations however drive process innovations that include new, radically different tow impregnation methods. In this work, the process–property–performance relationship is experimentally construed for hoop-wound carbon fibre/epoxy composite cylinders. The difference between cylinders produced by a new tow impregnation system and cylinders from the reference impregnation system was investigated. Winding speed and cylinder wall thickness were considered as two additional variables. The results indicate that, within current scope, composite microstructure is relatively insensitive to the winding speed and to final cylinder thickness. Meanwhile, un-optimized changes for tow impregnation affect the void content, the size distribution of voids and the interlaminar failure mode in short beam shear.

show abstract

Clean and environmentally friendly wet-filament winding

Cited by 6 publications

References 20 publications

Buckling strength optimization of fabrication factors of composite lattice cylinders using experimental‐statistical method (Taguchi)

Buckling strength optimization of fabrication factors of composite lattice cylinders using experimental‐statistical method (Taguchi)

Impact of winding parameters on the fiber bandwidth in the cylindrical area of a hydrogen pressure vessel for generating a digital twin

The effect of processing on the microstructure of hoop-wound composite cylinders

Contact Info

Product

Resources

About