A high-speed impact test fixture for composite laminates
A composite material layer and high-speed impact technology, which is applied in the direction of testing material strength, analyzing materials, and measuring devices using one-time impact force, can solve the problems of restricting the efficiency of high-speed impact testing, the inability to flexibly adjust the aspect ratio of fixtures, and push up research costs.
Active Publication Date: 2021-04-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0004] In the existing high-speed impact test, the fixture cannot flexibly adjust the aspect ratio. One fixture can only be used for one size of composite laminates. Frequent replacement of fixtures is a serious constraint when studying the high-speed impact resistance of composite laminates with different aspect ratios. High-speed impact testing efficiency, driving up research costs
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0024] The purpose of the present invention is to provide a high-speed impact test fixture for composite material laminates, which can flexibly adjust the impact angle, is suitable for samples with different aspect ratios, improves test efficiency, and saves test costs.
[0025] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction ...
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The invention discloses a fixture for high-speed impact testing of composite material laminates, which relates to the technical field of high-speed impact testing of composite material laminates. The chassis rotation mechanism includes a mounting plate, a rotating cylindrical disk, two columns and a plurality of locking adjustment components. The loading mechanism includes The first bracket, the first pressing plate, the loading adjustment assembly and two first locking pieces, the first bracket is connected with the two columns through the first locking piece, the loading adjustment assembly is installed on the first bracket, and the first pressing plate is fixed on the The lower end of the loading adjustment assembly; the compression mechanism includes a second bracket, a second pressure plate, a compression adjustment assembly and two second locking pieces, the second bracket is connected to the two columns through the second locking pieces, and the loading mechanism is arranged on multiple Above the first compression mechanism, the compression adjustment assembly is installed on one side of the second bracket, and the second pressing plate is fixed on one side of the compression adjustment assembly. The fixture can flexibly adjust the impact angle and is suitable for samples with different aspect ratios, which improves the test efficiency and saves the test cost.
Description
technical field [0001] The invention relates to the technical field of high-speed impact testing of composite material laminates, in particular to a fixture for high-speed impact testing of composite material laminates. Background technique [0002] Fiber metal laminates are hybrid laminated composites made of metal sheets and fiber-reinforced polymer materials, and are composite laminates in a broad sense. With high specific stiffness, specific strength, damage tolerance and excellent fatigue resistance, it is widely used in aviation and automobile industries. During the take-off and landing process, the aircraft is vulnerable to the impact of birds, stones and other foreign objects, which poses a great threat to aviation safety. Therefore, more and more attention has been paid to the research on the high-speed impact resistance of composite laminates. [0003] However, until now there is no relevant standard for the design of high-speed impact test fixtures for composite ...
Claims
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IPC IPC(8): G01N3/04G01N3/30
CPCG01N3/04G01N3/30G01N2203/0282
Inventor 潘蕾袁潇洒仲浪郭华鑫陶杰汪涛
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS