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Effects of four different thread yarns on interlaminar shear strength and failure behavior of the three-dimensional stitched composites were investigated by a double-notch shear test at room temperature and 100 °u2103. For the first time, the interfacial tenacity of stitch yarns/resin at 100 u2103 was quantitatively measured for the first time. The results showed that the mechanical properties of stitch yarns play a significant role in determining composites' ILSS, which can reach 82. 6 MPa, and 3DSCs stitched with PBO stitch yarn have the best ILSS at RT. The stitch yarn/resin interface results in composite ILSS of composites, 3DSCs stitched with CF stitch yarn, exhibit the highest interlaminar shear results at 100 u2103, and the ILSS is 52. 4 MPa.
Source link: https://doi.org/10.1007/s42114-022-00526-y
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