Speckle making method for deformation measurement in high temperature environment

A technology of high temperature environment and production method, applied in the field of experimental mechanics, can solve the problems of affecting accuracy and complicated production method, and achieve the effects of low production cost, simple operation and easy realization.

Inactive Publication Date: 2010-12-08
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the production method is more complicated, and the ceramic coating has a certain strengthening effect on the surface of the measured material, which will eventually affect the accuracy of the deformation measurement of the digital image correlation method

Method used

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  • Speckle making method for deformation measurement in high temperature environment
  • Speckle making method for deformation measurement in high temperature environment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] figure 1 It is an operation flowchart of a speckle production method for high-temperature environment deformation measurement according to the present invention, and its specific operation steps are as follows:

[0025] a. Select the material of the test piece to be chromium-nickel austenitic stainless steel (the material grade is 1Cr19Ni9Ti), cut the test piece into a shape of 100mm×100mm×2mm (length×width×thickness), and then use acetone on its surface Wipe dry with cotton balls and dry after cleaning;

[0026] b. Dilute the liquid component of the high-temperature inorganic glue of model Ak04-4 produced by Beijing Aoyukexin Surface Engineering Technology Co., Ltd. with alcohol in a volume ratio of 7:3 and stir evenly;

[0027] c. adding the cobalt oxide powder to the liquid component of the diluted high-temperature inorganic glue in a weight ratio of 10%;

[0028] d. Randomly apply the solution with cobalt oxide powder on the surface of the cleaned and dried test p...

Embodiment 2

[0031] a. Select the material of the test piece to be 310S stainless steel, cut the test piece into a shape of 100mm×100mm×2mm (length×width×thickness), then clean the surface with acetone and dry it with a cotton ball ;

[0032] b. Dilute the liquid component of the high-temperature inorganic glue of model Ak04-4 produced by Beijing Aoyukexin Surface Engineering Technology Co., Ltd. with alcohol in a volume ratio of 7:3 and stir evenly;

[0033] c. adding the cobalt oxide powder to the liquid component of the diluted high-temperature inorganic glue in a weight ratio of 10%;

[0034] d. Randomly spray the solution added with cobalt oxide powder on the surface of the cleaned and dried test piece with a brush;

[0035] e. Place it at room temperature for 24 hours. After the surface of the sample is dried and solidified, the high-temperature artificial speckle is completed.

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Abstract

The invention discloses a speckle making method for deformation measurement in high temperature environment, which comprises the following five steps of: 1, preparing a testpiece: processing a to-be-tested testpiece material into the required size, cleaning the surface by using acetone, and wiping and drying by using cotton balls; 2, diluting a liquid component of a high-temperature inorganic adhesive suitable for high temperature with not less than 1,200 DEG C by using alcohol in a ratio of 7:3 in a container, and uniformly stirring; 3, adding 10 weight percent of CoO powder into the diluted liquid component of the high-temperature inorganic adhesive; 4, randomly spotting, spraying or splashing the solution added with the CoO powder on the surface of the cleaned and dried testpiece with a brush or dropper; and 5, standing at room temperature for at least 24 hours, and drying and curing the surface of the tespiece to complete the speckle making. The speckle is high-temperature resistant, and can be used as a carrier of full-field deformation information on the surface of a material in the high temperature environment. The speckle making method has the advantages of novel concept, simple and convenient operation and strong practicability.

Description

(1) Technical field [0001] The invention relates to a method for making speckles for deformation measurement in high-temperature environments, which belongs to the field of experimental mechanics. (2) Background technology [0002] Many materials and components used in aerospace materials, parts and components in aero-engines, high-pressure steam boilers, steam turbines, and chemical oil refining equipment need to work in a high-temperature environment for a period of time or for a long time. The impact of high temperature on materials or structures is mainly reflected in two aspects: 1) Temperature will affect the physical and mechanical properties of materials. For example, the high-temperature mechanical properties of materials are different from room temperature. For materials used in high-temperature environments, it is far from meeting the design requirements if only considering the mechanical properties under short-term static load at room temperature. Because temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C9/08B05C1/06B05C5/00G01B11/16
Inventor 潘兵吴大方
Owner BEIHANG UNIV
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