Method for obtaining I-type fracture toughness of three-dimensional woven composite material interface
A fracture toughness and composite material technology, applied in the direction of analyzing materials, testing material strength using stable tension/pressure, sampling, etc. Simple internal structure, single failure mode effect
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[0026] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be covered by the present invention. within the scope of protection.
[0027] The research object of the present invention is a typical three-dimensional woven composite material internal yarn weaving structure, and its structure is as follows: figure 1 As shown, warp yarn 1 and weft yarn 2 are included, and there is spatial interlocking between the two yarns. Among them, the warp yarn 1 fluctuates greatly, while the weft yarn 2 is relatively straight.
[0028] figure 2 is the cutting position of the specimen, image 3 is the incision position of the crack tip. For the convenience of expression, the warp direction is ...
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