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Method for making speckles for high-temperature deformation testing experiment

A production method and a technology for testing experiments, applied in the field of photomechanics, to achieve the effects of wide sources, low cost, and simple procedures

Inactive Publication Date: 2015-11-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the small size of powder particles, this method is only suitable for micro-scale measurement experiments, and the maximum temperature of speckle is 1100°C

Method used

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  • Method for making speckles for high-temperature deformation testing experiment
  • Method for making speckles for high-temperature deformation testing experiment
  • Method for making speckles for high-temperature deformation testing experiment

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0037] High-temperature speckle needs to meet the following technical conditions: (1) can withstand high enough temperature; (2) have sufficient adhesion to the surface of the material, and will not fall off under high temperature; (3) ensure simultaneous deformation with the material. The speckle production methods in the prior art are either unable to withstand higher temperatures, or the production process is complicated, or the cost is high, and some productio...

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Abstract

The invention discloses a method for making speckles for high-temperature deformation testing experiment. The method comprises the following steps: mixing ceramic powder with aluminum oxide serving as aggregates and a liquid combining agent according to a mass ratio of 3 to 1, and homogenizing a mixed solution obtained by mixing; spraying the homogenized mixed solution on the surface of a test sample to be tested; drying the test sample to be tested with the mixed solution, and obtaining the speckles on the surface of the test sample to be tested. The method for making the speckles for the high-temperature deformation testing experiment is suitable for a high-temperature environment, low in cost and wide in use range, and the making procedures are simple and clear.

Description

technical field [0001] The invention relates to the technical field of photomechanics, in particular to a method for making speckles used in high-temperature deformation testing experiments. Background technique [0002] With the rapid development of ultra-high temperature ceramics, C / C, C / SiC and other advanced thermal structural materials, the application potential of these new composite materials in the aerospace field has become increasingly prominent. Structural design also requires high-temperature testing technology as a guarantee. If the high-temperature thermal response of materials and structures in real service environments is not clear, it will bring great blindness to the design of aircraft thermal protection systems and high-temperature thermal structures. [0003] At present, the non-contact photomechanical method is mainly used for the high-temperature mechanical performance testing technology of this kind of new material system materials. The digital image ...

Claims

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Application Information

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IPC IPC(8): G01N1/28
Inventor 许承海王伟孟松鹤金华宋乐颖
Owner HARBIN INST OF TECH
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