C/SiC composite material fastener fracture behavior energy signal in-situ monitoring device and method
A composite material and energy signal technology, which is applied in measuring devices, using stable tension/pressure to test the strength of materials, analyzing materials, etc., can solve the problem of no clear analysis ideas for fracture modes, so as to improve technical cognition and analysis Reliability and the effect of improving monitoring efficiency
Active Publication Date: 2020-02-07
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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Problems solved by technology
At present, there is no clear analysis of the fracture mode of C / SiC composite materials. To solve the above problems, the key is to monitor the entire fracture process of C / SiC composite materials in situ and analyze the energy release signal during the fracture process.
Method used
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Embodiment Construction
[0038] The present invention will be further described below in conjunction with embodiment. But content of the present invention is not only limited to following embodiment:
[0039] Such as figure 1 As shown, the device of the present invention includes an acoustic emission probe, a compression screw, an upper tooling, and a lower tooling; the upper tooling and the lower tooling are both frame-type tooling, and the frame-type tooling is provided with clamping heads for connecting with the testing machine respectively. , the lower frame of the upper tooling and the upper frame of the lower tooling are provided with notches consistent with the outer diameter of the C / SiC composite fastener to be monitored, wherein the notch of the upper tooling is grooved outside, and the C / SiC to be monitored Composite material fasteners pass through the gap and are fixed on the surface of the upper frame and the lower frame. The fasteners are coupled at both ends. Among them, the acoustic...
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Abstract
The invention relates to a C / SiC composite material fastener fracture behavior energy signal in-situ monitoring device and method. The monitoring device comprises two acoustic emission probes, pressing screws, an upper tool and a lower tool. The upper tool and the lower tool are both frame type tools which are provided with clamping heads for connecting a testing machine, and a lower frame of theupper tool and an upper frame of the lower tool are provided with notches consistent with an outer diameter of a C / SiC composite material fastener to be monitored in size. A groove is formed outside the notch of the upper tool, the C / SiC composite material fastener to be monitored penetrates through the notch and is fixed on a surface of the upper frame and a surface of the lower frame, and the two acoustic emission probes are pressed through the pressing screws installed on the upper tool / the lower tool and are coupled with two ends of the fastener.
Description
technical field [0001] The invention relates to a C / SiC composite material fracture behavior energy signal in-situ monitoring device and method, which belongs to the technical field of testing and testing, and is applied in the technical field of thermal structural composite fastener damage mechanism research and failure analysis. Background technique [0002] At present, aerospace vehicles with high-speed, high-mobility and long-distance precision strikes as the main technical features have become a military hotspot in the world. One of the core challenges in the development of hypersonic vehicles is the design and development of high-temperature thermal structures. Compared with metal materials, composite materials have outstanding advantages such as higher specific strength and specific stiffness, and can be used in many fields such as aviation and aerospace. Their excellent fracture toughness, fatigue resistance and creep resistance make them ideal thermal structures for...
Claims
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IPC IPC(8): G01N3/08G01N3/06G01N3/04
CPCG01N3/08G01N3/06G01N3/068G01N3/04G01N2203/0062G01N2203/0064G01N2203/0066G01N2203/0067G01N2203/0423G01N2203/0641G01N2203/0658Y02E30/30
Inventor 袁建宇逄锦程王影谢国君卢克非刘哲军林鑫刘宏瑞韩露朱军辉
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH