ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Comparison of in-plane mechanical properties of 2D and 3D woven composites
Received date: 2022-11-15
Revised date: 2022-12-07
Accepted date: 2023-02-09
Online published: 2023-02-17
Supported by
National Science and Technology Major Project(2017-VII-0011-0106);Foundation Research Project of Jiangsu Province （the Natural Science Fund）(BK20220165)
2D and 3D woven composites with the same structure form and weaving process parameters were designed and prepared. Tensile， compressive and in-plane shear tests were systematically carried out by the digital image correlation method. The mechanical properties， carrying and failure mechanism of 2D and 3D woven composites were studied in combination with the evolution of surface strain field and fracture morphology. It is shown that the interlocking of warp yarns between layers significantly influences the macroscopic mechanical behavior and carrying mechanism of woven composites. 3D woven composite exhibits better structural integrity and weft mechanical properties at the expense of decrease in warp mechanical performance. Furthermore， the warp tensile strain-stress curves of 3D woven composites have a typical characteristic of nonlinearity. The constraint between warp yarn and weft yarn leads to the weak interface between fiber and matrix， which reduces the in-plane shear capacity of 3D woven composite.
Yang SUN , Jian HUANG , Chenchen HAN , Zhenqiang ZHAO , Haili ZHOU , Fangfang SUN , Chao LI , Chao ZHANG , Liquan ZHANG . Comparison of in-plane mechanical properties of 2D and 3D woven composites[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023 , 44(18) : 428267 -428267 . DOI: 10.7527/S1000-6893.2023.28267
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