Super-elastic material compression fatigue heat generating sample preparation device and test method
A technology for sample preparation and testing method, applied in the field of fatigue performance test, can solve the problems of inaccurate test results, low test efficiency, difficulty in sample preparation, etc., and achieve the effects of accurate test results, improved accuracy, and reduced test time.
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Embodiment 1
[0034] Such as figure 1 As shown, a hyperelastic material compression fatigue heat generation sample preparation device includes a compression column 1, a forming mold 3, a placement mold 2 and a base 4, and a placement area 6 is set in the middle of the placement mold 2, and the placement area 6 An injection hole 7 that runs through the mold 2 is provided inside, and a sample hole 8 that matches the injection hole 7 is provided on the molding mold 3, and the sample hole 8 is set through the molding mold 3. The compression column 1 Set on the upper end of the placing mold 2 , the lower end of the placing mold 2 is set on the upper end of the forming mold 3 , and the lower end of the forming mold 3 is set on the upper end of the base 4 .
[0035] Both the forming mold 3 and the placing mold 2 are provided with matching positioning holes 5 .
[0036] The placement area 6 is recessed on the placement mold 2 , and the lower end of the compression column 1 is provided with a bump ...
Embodiment 2
[0042] On the basis of Example 1, combined with figure 2 , the electronic universal testing machine includes a temperature control box 9, a temperature sensor 10, a lower compression fixture 11 and an upper compression fixture 12. During detection, the sample is placed in the center of the lower compression fixture 11, and then the upper compression fixture 12 is lowered to the test position. The upper surface of the sample can be used to test the compression fatigue performance of the sample at different ambient temperatures.
[0043] Place the cylindrical sample in an electronic universal testing machine equipped with a temperature control box for compression cycle test, and obtain the stress-strain curve of the compression cycle, see image 3 as shown, image 3 The closed shaded area in is the energy loss part in the compression fatigue performance test of hyperelastic materials. The larger the shaded area, the more energy loss, which means the worse the resilience of the...
Embodiment 3
[0045] A method for testing a hyperelastic material compression fatigue heat generation sample, comprising the steps of:
[0046] S1, mold making, place the sample forming mold 3 on the bottom plate, then place the material placing mold 2 on the sample forming mold 3, and align the positioning holes 5 up and down, and put the manufactured sample material into the material placing area 6. Finally, place the compression column 1 on the material placement mold 2;
[0047]S2, sample preparation, place the whole set of molds prepared in S1 in a temperature-controllable plate press, set the required pressure in the plate pressure gauge, the plate press applies pressure to the compression column 1, and place it in the material placement area The material of 6 enters the sample hole 8 through the injection hole 7 under the action of high pressure. When the material in the sample hole 8 is full, set the required temperature and vulcanization time for the heating device of the plate pre...
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Abstract
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