Experimental analysis of the planar compaction and preforming of unidirectional flax reinforcements using a thin paper or flax mat as binder for the UD fibers

Mbakop, Rodrigue Stéphane; Lebrun, Gilbert; Brouillette, François

doi:10.1016/j.compositesa.2018.03.036

Cited by 34 publications

(30 citation statements)

References 31 publications

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“…5 Compaction force is an important process parameter for AFP. [6][7][8][9] There is a direct relationship between compaction force, void content and bond strength between laminates for thermoplastic matrix composites. [10][11][12] And for thermoset matrix composites, compaction force has an effect on tack strength between layers before autoclave cure.…”

Section: Introductionmentioning

confidence: 99%

Pressure distribution for automated fiber placement and design optimization of compaction rollers

Jiang

2019

Journal of Reinforced Plastics and Composites

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Section: Introductionmentioning

confidence: 99%

Pressure distribution for automated fiber placement and design optimization of compaction rollers

Jiang

2019

Journal of Reinforced Plastics and Composites

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“…[26] The viscoelastic recovery of the sample results from the platen separation. [53] The final thickness after complete recovery of the sample is represented as h 5 . [27] The percentage of permanent deformation is an important parameter that determines the final thickness of the component.…”

Section: Methodsmentioning

confidence: 99%

Viscoelastic and cyclic compaction response of prepregs tested under isothermal temperatures and various compaction speeds

et al. 2021

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Viscoelastic compaction/relaxation and cyclic compaction studies of uncured prepregs are of importance to understand the process parameters, such as mold closing forces and speed and the clamping force required to maintain a given thickness during molding, and so forth, for many composites manufacturing processes, including compression molding. In this study, viscoelastic compaction/ relaxation, and multi-cycle-compaction tests were performed on uncured glass/ epoxy prepreg specimens at elevated temperatures and variable compaction speeds up to a target fiber volume fraction of 0.65. At low temperatures, the relax-

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“…19,20 This phenomenon may affect formability upon the natural fiber preforming. 21 Gu et al 1 indicated that higher temperature and pressure can promote the fiber's permanent deformation. Liu and Zhou 22 heated and bent the bamboo strips at 160 C, which was conducted under a humid environment.…”

Section: Introductionmentioning

confidence: 99%

“…In bending of the wetted bamboo strips, the temperature and bending velocity are important factors that affect plastic deformation. Mbakop et al 21 indicated that the heating temperature and moisture content of flax fibers are the important factors to fabricate the complex 3D preform with permanent deformation. Higher temperature and moisture content can increase creep phenomena and soften fiber, lignin, and hemicellulose.…”

Section: Introductionmentioning

confidence: 99%

Characteristic study of bamboo fibers in preforming

Chiu

Young

2020

Journal of Composite Materials

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The bamboo fiber preforming is an important process in the liquid composite molding for fabricating fiber reinforced composites with non-planar geometric shapes. This study investigated the deformation and spring back behaviors of the single bamboo fiber and bamboo fiber mat under a simple bending preforming test. The effects of the heating temperature and moisture content of bamboo fibers were studied during the tests. The result showed that the [0/90] bamboo fiber mats could be perfectly preformed without spring back after bending under the conditions of a wet and high temperature conditions. The internal structure of bamboo fiber with moisture tends to expand and soften, which makes the fibers to deform plastically under external stresses. The single bamboo fiber preforming test and stress relaxation test were conducted to study its formability. Higher heating temperature and moisture content for the bamboo fibers during preforming process can reduce the spring back effect after preforming.

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Experimental analysis of the planar compaction and preforming of unidirectional flax reinforcements using a thin paper or flax mat as binder for the UD fibers

Cited by 34 publications

References 31 publications

Pressure distribution for automated fiber placement and design optimization of compaction rollers

Pressure distribution for automated fiber placement and design optimization of compaction rollers

Viscoelastic and cyclic compaction response of prepregs tested under isothermal temperatures and various compaction speeds

Characteristic study of bamboo fibers in preforming

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