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Device and method for testing elasticity modulus under high temperature and ultrahigh temperature environments

A technology of elastic modulus and test method, which is applied in measuring devices, using stable tension/pressure to test the strength and strength characteristics of materials, etc. The effect of quantitative performance

Active Publication Date: 2015-03-25
CHINA TEST & CERTIFICATION INT GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this inductance measuring device cannot be used in a high-temperature atmosphere or an ultra-high temperature vacuum environment.
This makes it difficult to measure the displacement change Δδ of ceramics and other high-temperature resistant materials at high temperatures.

Method used

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  • Device and method for testing elasticity modulus under high temperature and ultrahigh temperature environments
  • Device and method for testing elasticity modulus under high temperature and ultrahigh temperature environments
  • Device and method for testing elasticity modulus under high temperature and ultrahigh temperature environments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Embodiment 1: Measuring the elastic modulus of quartz glass material under high temperature atmospheric environment

[0079] Specimen preparation: Use a wire cutting machine to cut the quartz glass pipe (outer diameter 48mm, inner diameter 43mm) into several gap ring specimens with a width of 7.5mm, then polish and chamfer the surface; then cut out the gap ring specimens A horizontal notch with a length of 10mm. Then process a quartz glass disc (diameter 50 mm, width 8 mm) similar in size to the notch ring test piece for correction.

[0080] The specific experimental operation steps are:

[0081] ①Take a notched ring test piece and measure its size as 47.87mm (outer diameter D=2R), 42.76mm (inner diameter d=2r), 7.74mm (width b);

[0082] ② Place the test piece on the designed cross-recessed fixture (see image 3 ), and then placed in a silicon molybdenum rod heating furnace, heated from room temperature (17°C) to 600°C, 800°C, 1000°C, 1100°C and 1200°C in sequence...

Embodiment 2

[0089] Embodiment 2: Measuring the elastic modulus of corundum ceramic material in ultra-high temperature vacuum environment

[0090] Specimen preparation: use a wire cutting machine to cut corundum high-temperature-resistant pipes (outer diameter 40mm, inner diameter 34mm) into several notched ring specimens with a width of 8mm, polish and chamfer the surface; then cut out a horizontal notch on the ring , the notch length is 9mm. Then process a graphite disc (diameter 40mm, width 8mm) similar in size to the gap ring for correction.

[0091] The specific experimental operation steps are:

[0092] ①Take a notched ring test piece and measure its size as 39.94mm (outer diameter D=2R), 33.96mm (inner diameter d=2r), 7.90mm (width b);

[0093] ② Place the test piece on the designed cross-recessed fixture (see image 3 ), and then put it into a graphite heating furnace, vacuumize it first, and heat it from room temperature (17°C) to 1000°C, 1300°C, 1500°C, 1600°C and 1700°C in se...

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Abstract

The invention relates to a device and a method for testing an elasticity modulus under high temperature and ultrahigh temperature environments, and provides a device and a method for testing the elasticity modulus of a high temperature resistance material, such as ceramic, under high temperature and ultrahigh temperature extreme environments by utilizing a notched ring specimen. The device comprises a notched ring specimen and a cross recess clamp with a base and an action roller, and the notched ring specimen is arranged in a cross horizontal slot of the device so as to solve the problem of location of the notched ring specimen in high-temperature and ultrahigh-temperature furnaces. The method comprises the step of respectively loading notched ring specimen and a comparison specimen by utilizing same loads under complete same conditions to obtain two different compression displacements, wherein the difference value is a real deformation quantity of the notched ring specimen; therefore, deformation measurement system errors under the high-temperature and ultrahigh-temperature environments are eliminated. The device and the method provided by the invention can measure the elastic modulus of a material under the high-temperature and ultrahigh-temperature environments, and have great important significance to structure design and safety evaluation of aeronautical materials and refractory materials.

Description

technical field [0001] The invention relates to a testing device and a testing method for testing the elastic modulus of high-temperature-resistant materials such as ceramics in high-temperature and ultra-high-temperature extreme environments. In particular, it relates to a test device and test for indirect evaluation of the elastic modulus by using the notched ring test piece for high temperature above 1000°C and ultra-high temperature extreme environment above 1500°C, where the elastic modulus of the material cannot be obtained by conventional methods method. Background technique [0002] With the rapid development of new materials and aerospace technology, there is an increasing demand for high-temperature structural materials such as high-temperature resistance, oxidation resistance, and wear resistance. Working in a high temperature environment caused by severe friction requires related materials to have sufficient high temperature resistance. Moreover, most of the de...

Claims

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Application Information

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IPC IPC(8): G01N3/18G01N3/04
Inventor 包亦望刘钊万德田
Owner CHINA TEST & CERTIFICATION INT GRP CO LTD
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