Clamping device and method for testing axial impact resistance of multi-grain small cylindrical specimens
A technology of impact resistance and sample axial direction, applied in the direction of measuring devices, strength characteristics, instruments, etc., can solve problems such as differences in environmental conditions, achieve the effect of reducing test errors and facilitating adjustments
Inactive Publication Date: 2021-09-03
ZHONGBEI UNIV
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Problems solved by technology
Despite such requirements, in actual testing, it is inevitable that there will be differences in environmental conditions when testing parallel cylindrical samples
Method used
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[0030] In order to further illustrate the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0031] Such as Figure 1 to Figure 3 As shown, the clamping device for testing the axial impact resistance of multi-grain small cylindrical samples includes a lower clamp 1 and an upper clamp 2, and a plurality of placement grooves 3 are uniformly arranged on the upper surface of the lower clamp 1, and in the The lower surface of the upper fixture 2 is provided with placement holes 4 corresponding to a plurality of placement grooves 3 one-to-one, and the number of placement grooves 3 and placement holes 4 is six. A threaded through hole 5 is provided above the placement hole 4, and the placement hole 4 communicates with the threaded through hole 5, and a fine-tuning threaded column 6 is arranged in each threaded through hole 5 to adjust the height of the small columnar sampl...
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The invention belongs to the technical field of axial impact resistance testing, in particular to a clamping device and method for testing the axial impact resistance of multi-grain small columnar samples, and a clamping method for testing the axial impact resistance of multi-grain small columnar samples The device includes a lower jig and an upper jig, a plurality of placement grooves are evenly arranged on the upper surface of the lower jig, and placement holes corresponding to the plurality of placement grooves are arranged on the lower surface of the upper jig. A threaded through hole is provided above the hole, and the placement hole is connected with the threaded through hole, and a fine-tuning threaded column is arranged in each threaded through hole. The existing drop weight impact test instrument is equipped with a heavier drop weight, which can test small-sized columnar samples of polymer material types without changing the test instrument, and can reduce the number of times to test polymer materials. The test error caused by the difference in environmental conditions when the material type is parallel to the cylindrical sample.
Description
technical field [0001] The invention belongs to the technical field of axial impact resistance testing, and in particular relates to a clamping device and method for testing the axial impact resistance of multi-grain small columnar samples. Background technique [0002] Extruded polymer material profiles (including rods, pipes, etc.) are oriented due to the orientation of macromolecular chains during the molding preparation process, resulting in anisotropy in the mechanical properties of such materials. When testing and characterizing the mechanical properties of such materials, the axial mechanical property test, especially when the impact resistance of the material is high, testing its axial impact resistance is an important aspect of characterizing the mechanical properties of the material. Since the mechanical properties of polymer material profiles are closely related to their preparation process, when testing the axial impact resistance of such materials, in order to m...
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IPC IPC(8): G01N3/04G01N3/303
CPCG01N3/04G01N3/303G01N2203/001G01N2203/0039G01N2203/0476
Inventor 张丽华刘幼平代淑兰马忠亮
Owner ZHONGBEI UNIV