Clamping device suitable for testing shear property of fiber reinforcement bodies and prepregs thereof
A fiber reinforcement and prepreg technology, which is applied in the direction of using a stable shear force to test the strength, strength characteristics, measuring devices, etc. Structural stability, testing the effect of shear deformation and large-angle shear deformation
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[0044] Example 1:
[0045] Step 1: Prepare the test sample, cut the T300 plain weave carbon fiber cloth to be tested to the specified shape, with a long side of 320mm and a short side of 100mm in a cross-shaped pattern. The warp and weft yarn directions of the fiber cloth are consistent with the cross direction.
[0046] Step 2: Install the main frame on the tensile testing machine and install the tension and compression sensor 3 on the main frame and power on.
[0047] Step 3: Adjust the chuck stroke of the tensile testing machine and cooperate with the L-shaped limit rod to make the initial frame maintain a square shape, that is, the main frame connecting rods are at 90° to each other. Place the edge of the cross-shaped pattern between the rubber pads 17 of the rear clamping portion, and lock the bolts on the rear clamping portion 8 so that the upper clamping plate 16 and the lower clamping plate 15 clamp the pattern and fix them on the movable base 14 on.
[0048] Step 4: Adjust the
Example Embodiment
[0051] Example 2:
[0052] Step 1: Prepare the test sample, and cut the carbon fiber reinforced polyether ether ketone prepreg to be tested into a cross-shaped pattern with a long side of 320mm and a short side of 100mm. The direction of the warp and weft yarns of the fiber cloth is consistent with the cross direction. Among them, the carbon fiber reinforced polyether ether ketone prepreg is a prepreg prepared by electrostatic powder spraying, the reinforcement is preferably T300 plain weave carbon fiber cloth, and the matrix is preferably Vicote 702 polyether ether ketone fine powder from Shanghai Victrex Company, and Mix 2-3% volume fraction of PTFE powder.
[0053] Step 2: Install the main frame on the tensile testing machine, install the tension and compression sensor 3 on the main frame and power on.
[0054] Step 3: Adjust the chuck stroke of the tensile testing machine and cooperate with the L-shaped limit rod to make the main frame maintain a square shape, that is, the main f
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