In-situ measuring apparatus for high temperature distortion ceramic fiber
A high-temperature deformation and in-situ measurement technology, which is applied in the direction of measuring devices, using optical devices, and using stable tension/pressure to test the strength of materials, can solve the problems of low test temperature and inaccurate strain measurement, and achieve strain measurement Accurate, easy to install and easy to operate
Inactive Publication Date: 2009-11-04
XIAMEN UNIV
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Problems solved by technology
[0007] At present, the UH-1 series ultra-high temperature material testing machine produced by Shimadzu Corporation in Japan uses a non-contact extensometer for in-situ strain measurement, but the maximum test temperature can only be 300°C (vacuum, inert gas), while Using a contact extensometer, although the temperature can reach 1200°C, it can only measure metal materials, so it also has the disadvantages of low test temperature and inaccurate strain measurement
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[0024] The structure and working principle of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0025] see Figure 1-3 , The in-situ measurement device for the deformation of ceramic fiber samples under high-temperature atmosphere protection consists of two parts: a high-temperature atmosphere furnace processing system 1 and a high-precision optical measurement system 2 .
[0026] The high-temperature atmosphere furnace processing system consists of a double furnace structure. The main function of the inner furnace 11 is to ensure high temperature, and the outer furnace 12 ensures the vacuum degree, which fully guarantees the vacuum degree and the airtightness of the inert gas. The inner furnace 11 and the outer furnace 12 are connected and fixed through the metal bracket 125 and the supporting metal ring 127. The two furnaces are placed in the middle of the universal testing machine 13 and fixed on the working platform of...
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Abstract
The invention relates to an in-situ measuring device for high-temperature deformation of ceramic fibers, relating to a measuring device for studying the deformation and fracture behavior of ceramic fiber samples under the coupling action of high temperature and stress. Including high-temperature atmosphere furnace processing system and optical measurement system, high-temperature atmosphere furnace processing system includes inner furnace, outer furnace, universal testing machine, load sensor, water-cooled air seal system and temperature measurement and control device; optical measurement system includes photoelectric extensometer, data acquisition and processing system, interference filter device, strong light source. The high-temperature atmosphere furnace adopts a double-furnace structure, the inner furnace ensures high temperature, and the outer furnace ensures the vacuum degree, which fully guarantees the vacuum degree and the airtightness of the inert gas. The universal testing machine is used to provide the load of the sample, and the photoelectric extensometer is used to track the strain of the tested sample. The deformation of the tested sample under the protection of high temperature atmosphere can obtain accurate deformation data through the movement of two mark points. It has the characteristics of accurate strain measurement, easy operation and high reliability.
Description
technical field [0001] The invention relates to an in-situ measuring device, in particular to a measuring device for studying the deformation and fracture behavior of a ceramic fiber sample under the coupled action of high temperature and stress. Background technique [0002] Ceramic fiber is a reinforcement of ceramic matrix composites. Fibrous materials made of natural or artificial inorganic substances by different processes can also be converted from organic fibers through high-temperature heat treatment. In addition to excellent mechanical properties, ceramic fibers also have the advantages of anti-oxidation and high temperature stability. The stress-strain relationship and mechanical properties of ceramic fiber samples at high temperatures are important performance indicators for high-temperature resistant high-performance materials used in high-tech fields such as aerospace and advanced weaponry. Studies have shown that as the service temperature increases, the elast...
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IPC IPC(8): G01N3/18G01B11/16
Inventor 冯祖德姚荣迁陈立富
Owner XIAMEN UNIV