High-speed impact test fixture for composite laminate
A composite material layer, high-speed impact technology, applied in the direction of using a single impact force to test the strength of materials, analyzing materials, measuring devices, etc., can solve problems such as driving up research costs, restricting the efficiency of high-speed impact testing, and the inability of the fixture to flexibly adjust the aspect ratio. , to achieve the effect of saving test cost, improving test efficiency and high structural applicability
Active Publication Date: 2020-06-09
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 high-speed impact test fixture for a composite laminate, and relates to the technical field of high-speed impact testing of composite laminates. A chassis rotating mechanismcomprises a mounting plate, a rotating cylindrical disc, two stand columns and a plurality of locking adjusting assemblies. A loading mechanism comprises a first support, a first pressing plate, a loading adjusting assembly and two first locking pieces. The first support is connected with the two stand columns through the first locking pieces, the loading adjusting assembly is installed on the first support, and the first pressing plate is fixed to the lower end of the loading adjusting assembly; the pressing mechanism comprises a second support, a second pressing plate, a pressing adjusting assembly and two second locking pieces, the second support is connected with the two stand columns through the second locking pieces, the loading mechanism is arranged above multiple pressing mechanisms, the pressing adjusting assembly is installed on one side of the second support, and the second pressing plate is fixed to one side of the pressing adjusting assembly. The fixture can flexibly adjust the impact angle and is suitable for samples with different aspect ratios and 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 ...
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Login to View More 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