Method and apparatus for improving absorptivity and emissivity in infrared thermal wave non-destructive testing

A non-destructive testing, infrared thermal wave technology, applied in the direction of material defect testing, etc., can solve the problems of pollution, damage, limit the application of infrared thermal wave non-destructive testing technology, etc., to improve the detection effect, improve the absorption rate and infrared emissivity effect.

Inactive Publication Date: 2006-05-03
CAPITAL NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for some corrosion-prone or precise aerospace and aviation components, this anti-reflection treatment will cause a certain degree of pollution or even damage to the surface of the measured object, which limits the application of infrared thermal wave nondestructive testing technology in this area

Method used

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  • Method and apparatus for improving absorptivity and emissivity in infrared thermal wave non-destructive testing
  • Method and apparatus for improving absorptivity and emissivity in infrared thermal wave non-destructive testing
  • Method and apparatus for improving absorptivity and emissivity in infrared thermal wave non-destructive testing

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Example 1: For a vacuum coating device independent of the detection system, see figure 1 Firstly, the vacuum bag 1 of suitable material should be selected, and the material of the vacuum bag 1 is required to be a polymer film with high elasticity and high tensile strength, which has good visible light absorption rate and infrared emission rate. Put the detected object 2 into the vacuum bag 1 and seal the vacuum bag 1 with the buckle 4, pump out the air in the vacuum bag 1 through the air hole 3, so that there is no air gap between the film of the vacuum bag 1 and the detected object 2 In close contact, the air hole 3 is connected to the vacuum device through the air pipe 5 . To further increase the visible light absorption rate and infrared emission rate of the film surface, uniform spraying treatment can be carried out on the film surface.

Embodiment 2

[0018] Example 2: The vacuum coating device in the infrared thermal wave non-destructive testing system see figure 2 and image 3 . Add a rubber skirt 9 between the flashlight cover 6 and the surface 12 of the object to be measured. The rubber material used to make the rubber skirt 9 should have certain elasticity. The shape and size of the upper port of the rubber skirt 9 are the same as those of the flashlight cover 6. The shape and size of the port match, and the shape and radian of the port under the rubber skirt 9 need to be designed according to the shape and surface radian of the test piece. Have air-breathing hole 10 on rubber skirt circumference 9. Cover the upper port of the rubber skirt 9 with the film 8, then insert the lower port of the flash cover 6 into the upper port of the rubber skirt 9, and at the same time clamp the film 8, during the measurement, the lower port of the rubber skirt 9 Place it on the surface 12 of the measured object, so that a closed sp...

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Abstract

The invention relates to a method and apparatus for improving the surface absorbing ratio and emissive power during the infrared heat wave nondestructive testing course in the field of infrared heat wave nondestructive test. It is characterized in that it chooses the function thin foil with better light absorbing ratio and emissive power to cover or coat the tested object and uses the method of drafting the air between the tested object surface and the thin foil to make them closed contact with each other during the infrared heat wave nondestructive testing course. The invention provides two apparatus to achieve the method by the size of the tested object.

Description

technical field [0001] The invention relates to an infrared thermal wave nondestructive detection technology, in particular to a method and a device for increasing the surface absorptivity and emissivity of a measured object during the infrared thermal wave nondestructive detection process. Background technique [0002] Infrared thermal wave non-destructive testing technology is based on thermal wave theory, heats the surface of the object to be detected, uses infrared thermal imaging cameras and other equipment to record changes in the temperature field of the object's surface, and detects whether there are defects inside the object by interpreting the surface temperature field and the type and nature of defects. A significant difference between infrared thermal wave detection technology and traditional thermal imaging technology is that it uses actively controlled heating technology to stimulate subsurface defects. In the case of using visible light as the thermal excitat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/72
Inventor 王迅段玉霞金万平冯立春张存林
Owner CAPITAL NORMAL UNIVERSITY
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