Experimental study of tensile and flexural performances and failure mechanism of none-felt needled composites

Yao, Tianlei; Chen, Xiaoming; Li, Jiao; Wu, Kaijie; Su, Xingzhao

doi:10.1016/j.tws.2023.110805

Cited by 5 publications

(1 citation statement)

References 20 publications

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“…Using unidirectional cloth, 12,14 woven cloth, 15 or braided cloth 16 as the base cloth, which has better in‐plane performance and is commonly used in structural components such as brake disc materials, engine nozzles, throats, 17,18 and so forth. Recently, Yao et al 19,20 proposed a new needled structure and composite without felt that used half‐cut cloth instead of felt, presented excellent interlaminar and in‐plane performance, and was expected to be used as a material for high‐speed aircraft radome covers. There have been many research reports on the application of spread tow plain weave fabric in laminated composites, 21–23 which have shown that laminated composites using spread tow plain weave fabric can achieve better in‐plane mechanical properties 24,25 .…”

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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