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A device and method for evaluating the fatigue performance of prepreg tape
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A technology of fatigue performance and prepreg tape, applied in the direction of measuring devices, strength characteristics, instruments, etc., can solve the problems of less research on the performance of lap joints of prepreg tape, achieve wide application range, precise control and improvement, and accurate results Effect
Active Publication Date: 2022-05-24
BEIHANG UNIV
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[0003] At present, the quality control of prepreg tapes mainly focuses on width, thickness, resin content, tensile strength, molding process, etc., and there are few studies on the performance of prepreg tape lap joints.
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Embodiment 1
[0032] like Figure 1-Figure 2 Shown: This embodiment provides a device 100 for evaluating the fatigue performance of a prepreg, including a frame 1, a heating structure 2, a power roll 3, a tension structure 4 and at least one peeling roll 5, the heating structure 2, the power roll 3 , The tension structure 4 and the peeling roller 5 are all arranged on the frame 1, the power roller 3 can rotate, the angle of the peeling roller 5 can be adjusted, and the peeling roller 5 and the frame 1 can be disassembled, which is convenient to replace the peeling roller 5 of different materials and shapes , the power roller 3 , the tension structure 4 and the peeling roller 5 are used to set up the test prepreg belt 6 , the power roller 3 is used to drive the test prepreg belt 6 to move, and the heating structure 2 is used to heat the test prepreg belt 6 .
[0033] In this embodiment, the heating structure 2 is arranged above the peeling roller 5, and the heating structure 2 includes a tem...
Embodiment 2
[0043] like image 3As shown: this embodiment provides a method for evaluating the fatigue performance of a prepreg tape, using the device 100 for evaluating the fatigue performance of a prepreg tape in the first embodiment, including the following steps:
[0044] Step 1, prepare the test prepreg tape 6, take the specific perimeter of the device 100 for evaluating the fatigue performance of the prepreg tape as the length, cut and sample the sample with the lap joint, and crimp the ends to form a closed loop. The strength is higher than the mechanical strength of the lap joint;
[0045] In step 1, the samples include various prepregs including prepreg tapes, narrow tapes and other products;
[0046] Step 2, select a suitable shape and material of the peeling roller 5, adjust the position of the roller shaft group and the spacing of each peeling roller 5, so that the test prepreg 6 passes the roller at the set angle;
[0047] Step 3, set up the test prepreg 6 on the power roll...
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Abstract
The invention discloses a device and method for evaluating the fatigue performance of a prepreg tape, and relates to the technical field of fatigue testing equipment, including a frame, a heating structure, a power roller, a tension structure and at least one peeling roller, the heating structure, the power roller and the tension structure The peeling roller and the peeling roller are both set on the frame, the power roller can rotate, the angle of the peeling roller can be adjusted, and the peeling roller and the frame can be disassembled, which is convenient to replace the peeling roller with different materials and shapes. The power roller, tension structure and peeling roller are used for The test prepreg belt is set up, the power roller is used to drive the test prepreg belt to move, and the heating structure is used to heat the test prepreg belt. Through the device for evaluating the fatigue performance of the prepreg tape of the present invention, it is possible to apply over-roll fatigue to the pre-preg tape while simulating the real laying process conditions. The performance after fatigue can provide a reference for the laying process of the prepreg tape.
Description
technical field [0001] The invention relates to the technical field of fatigue testing equipment, in particular to a device and method for evaluating the fatigue performance of a prepreg. Background technique [0002] The automatic laying technology is a high-speed and high-efficiency composite material automatic forming process, with high material laying accuracy, high utilization rate and stable product quality. The automatic laying technology uses the prepreg tape as the processing material. In the process, the prepreg tape is drawn from the creel and passed through the traction distribution device, shearing device, tension device, rolling device, heating device, etc. During this process, the prepreg tape will pass through multiple fixed rollers or moving rollers with different angles and materials. [0003] At present, the quality control of prepreg tapes mainly focuses on width, thickness, resin content, tensile strength, molding process, etc., and there are few studie...
Claims
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