Determination of needling process satisfying stiffness requirements of <scp>3D</scp> needled composites

Qi, Yunchao; Wang, Bing; Meng, Sheng; Liang, Jun

doi:10.1002/pc.26913

Cited by 6 publications

(7 citation statements)

References 34 publications

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“…The energy consumed by the tufted fibers being pulled out or broken was captured in the same way. The energy consumed by the matrix was measured by reference [1], and the energy consumed by the delamination of the needled composite material was measured by reference [2]. K I was converted from the elastic modulus of cohesive, and the conversion relationship [20] is:…”

Section: Dcb Experiments Results and Analysis Of Needled/tufted Dual-...mentioning

confidence: 99%

“…Three dimensional (3D) needled composites overcome the shortcomings of easy delamination of laminated composites, and have been widely used in national defense, aerospace, new energy and rail transportation fields. [1][2][3] In recent years, researchers have conducted in-depth studies on the fabric structures of 3D needled composites, including felt/felt needled structures, [4][5][6] which were needled from short fibers and were often used in thermal insulation materials, such as aircraft cabins; felt/unidirectional cloth needled structure, [7][8][9] commonly used in brake materials, such as aircraft brake discs; felt/braiding fabric needled structure, [10][11][12] used for high temperature resistant materials, such as rocket engine nozzles. In the above-mentioned needled fabric structures, since the fabric contains a felt layer, and the felt layer had a relatively low density, the bulk density of the needled fabric containing the felt was usually low compared with braiding, and the interlaminar performance of conventional needled fabrics was relatively weak, which made it difficult to meet the use requirements of key core components of hypersonic aircraft.…”

Section: Introductionmentioning

confidence: 99%

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Effect of tufting on the interlaminar bonding behavior of needled composite

et al. 2022

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The needled/stitched dual-scale interlocking structure is a new fabric structure. However, the effect of stitching on the interlaminar bonding behavior of needled composite has not been elucidated. In this work, the needled/tufted dual-scale interlocking composite was prepared, and experimental and numerical simulation of Mode I interlaminar property was carried out. The influence of stitching on the interfacial bonding behavior of needled composite was revealed. Results showed that the implantation of tufted fibers greatly improved the Mode I interlaminar property of the needled composite. The maximum experimental load of double cantilever beam (DCB) was 129.32 N, which increased by 248.53% compared to needled composites. And GIC increased by 3 times. Moreover，within a certain range, with the increase of the length of the head of the tufted fiber bundle, the interlaminar performance of Mode I was effectively improved. The typical failure mode of needled/tufted dual-scale interlocking composite were matrix cracking, brittle fracture of needled fiber bundles, pulled out and brittle fracture of tufted fiber bundles. Moreover, the Tri-cohesive zone models (TCZMs) was proposed, and DCB simulation of needled/tufted dual-scale interlocking composite was conducted. The simulation of load-displacement curves was well closed to the experiment.The error range was within 7%.

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Section: Dcb Experiments Results and Analysis Of Needled/tufted Dual-...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of tufting on the interlaminar bonding behavior of needled composite

et al. 2022

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“…3,4 It has been widely used in fields such as aerospace, national defense, rail transit, and thermal field materials. [5][6][7] At present, there are mainly three types of reinforcements for needled composite. Firstly, the felt/felt layered needled structure, [8][9][10] which has a low volume density and weak in-plane mechanical properties, is mainly used as an anti-thermal insulation material; second, the felt/ base cloth layered needled structure.…”

Section: Introductionmentioning

confidence: 99%

“…The three‐dimensional (3D) needling process is highly automated, with the advantages of high production efficiency and good economic benefits, 1,2 overcoming the shortcomings of the weak interlaminar strength of traditional laminated materials and complex three‐dimensional braiding forming processes with long manufacturing cycles 3,4 . It has been widely used in fields such as aerospace, national defense, rail transit, and thermal field materials 5–7 …”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of carbon fiber spread tow needled preform and its composite based on novel short yarn needling method

Guo,

Chen,

Ren

et al. 2024

Polymer Composites

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Due to the high fiber volume fraction of carbon fiber spread tow plain weave fabrics, it is difficult for short fibers to be brought into the thickness direction to form needled fiber bundles during the needling process. The interlaminar performance of the carbon fiber spread tow needled preform is weak, and the in‐plane damage is also severe. Responding to this issue, this article proposed a new method for preparing carbon fiber spread tow needled preform based on short yarn needling, which was expected to manufacture high‐performance carbon fiber spread tow needled preform and composite. We conducted experimental research on the preparation and structural characterization of the preform, as well as the Mode I interlaminar mechanical properties and in‐plane tensile properties of composites. The results showed that the fiber volume fraction of the preform significantly increased, reaching to 55.7%–56.1%, which was 25.5%–25.9% higher than that of traditional needled preform. The Mode I interlaminar property of carbon fiber spread tow needled composite reached to 905–4376 J m−2, which was improved by 29.3%–525.1% and 125.8%–1054.6% compared to traditional needled composite and laminated composite, respectively. At the same time, the tensile strength and tensile modulus were also improved by 191.5%–212.2% and 66.2%–78.1% compared to traditional needled composites. The preparation method of carbon fiber spread tow needled preform based on short yarn needling has laid the foundation for the 3D printing molding of dry fiber fabrics and is expected to be applied to high‐quality needling of high thickness and large curvature‐shaped fabric preforms.Highlights A novel method was proposed for preparing high‐performance carbon fiber spread tow needled preform based on short yarn needling. The fiber volume fraction of novel carbon fiber spread tow needled preform significantly increased, reaching to 55.7%–56.1%. The GIc of the novel carbon fiber spread tow needled composite was improved by 29.3%–525.1% compared to the traditional needled composite. The tensile strength and tensile modulus were also improved by 191.5%–212.2% and 66.2%–78.1%, compared to traditional needled composites.

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“…Needled composites have good interlaminar connection performance and are increasingly used in aerospace, new energy, rail transit and national defense. [1][2][3] For different application scenarios, people proposed a variety of different needled fabric structures, mainly comprising of felt laminated needled fabric structures, 4,5 which are mainly used as thermal insulation materials and commonly used in aircraft compartments; felt and woven cloth laminated needled fabrics. [6][7][8] for brake disc material; moreover, felt and braiding cloth laminated needled fabrics.…”

Section: Introductionmentioning

confidence: 99%

Mode II interlaminar shear behavior of needled/tufted interlocking composites

Chen

Zheng

et al. 2023

Journal of Industrial Textiles

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The needled/tufted interlocking fabric is a new fabric structure. At present, the mode II interlaminar shear behavior of needled/tufted interlocking composite has not been clarified. In this work, the needled/tufted interlocking fabrics and reinforced composites were fabricated, and the interlaminar shear behavior of mode II was studied experimentally and numerically, the mechanism of tufting effect on interlaminar shear properties of needled composites was revealed. The study found that the interlaminar shear properties of needled/tufted interlocking composites were greatly improved by tufted fiber bundles. The maximum failure load of the needled/tufted interlocking specimen increased 108.93%, and the interlaminar shear stress of the needled/tufted interlocking specimen improved by 89.39%. The interlaminar shear strength increased linearly with the increase of tufted fiber bundle implantation volume. The implantation pattern of tufted fibers had effected on interlaminar shear property. Under the same implantation volume, the thinner tufted fiber bundles and more implantation points were more beneficial to improve the interlaminar shear performance. The typical shear failure modes included matrix cracking, fibers pullout, and brittle fracture of tufted fiber bundles and needled fiber bundles. Moreover, a numerical simulation model of interlaminar shear behavior based on three cohesive zones (TCZMs) was proposed. The predicted displacement-load curves were highly in accord with the experiments. The error range was controlled within 1.08% - 3.76%. The simulation model could predict the mode II shear behavior of needled and tufted interlocking composites effectively, which was helpful to the early manufacturing process design of needled and tufted interlocking fabrics.

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Determination of needling process satisfying stiffness requirements of 3D needled composites

Cited by 6 publications

References 34 publications

Effect of tufting on the interlaminar bonding behavior of needled composite

Effect of tufting on the interlaminar bonding behavior of needled composite

Preparation and characterization of carbon fiber spread tow needled preform and its composite based on novel short yarn needling method

Mode II interlaminar shear behavior of needled/tufted interlocking composites

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