X-ray testing method for NF-series heat-proof material products

A heat-proof material and radiographic testing technology, applied in the direction of using radiation for material analysis, can solve the problem of non-destructive testing technology without corresponding testing, and achieve the effect of effective testing

Active Publication Date: 2019-03-08
BEIJING SATELLITE MFG FACTORY
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  • Abstract
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Problems solved by technology

At present, there is no corresponding testing method standard for the non-destructive testing technology of NF series heat-resistant material products at home and abroad.

Method used

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  • X-ray testing method for NF-series heat-proof material products
  • X-ray testing method for NF-series heat-proof material products
  • X-ray testing method for NF-series heat-proof material products

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Embodiment Construction

[0047] Radiographic detection technology is one of the most important detection methods in the field of non-destructive testing. The theoretical basis of the detection technology of the present invention is that when X-rays are used to transilluminate NF series heat-resistant material products, due to the uneven internal density, holes, inclusions, cracks ( Discontinuity) and other defects will attenuate the X-ray energy in the transillumination direction to varying degrees, and the X-ray film will convert X-rays with different energies into images with a certain blackness difference in the film. By evaluating images of different blackness differences in negatives, the identification and evaluation of internal defects of NF series heat-resistant material products is completed.

[0048] Such as figure 1 Shown is the detection flow chart of the present invention, comprises the following steps:

[0049] Step (1) Preparation of X-ray inspection image quality meter in the prefabri...

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Abstract

Disclosed is an X-ray testing method for NF-series heat-proof material products. The method includes producing a radiographic testing image quality indicator for the pre-fabricated body stage and a density unevenness standard test block for the pre-fabricated body stage, applying the internal-source eccentric single-wall transillumination technology to an X-ray machine to obtain a to-be-tested product, a photographic plate of the radiographic testing image quality indicator for the pre-fabricated body stage, and a photographic plate of the density unevenness standard test block for the pre-fabricated body stage, testing sensitivity, metal inclusions and low-density non-uniformity, producing a radiographic testing image quality indicator for the post-curing stage and a density unevenness standard test block for the post-curing stage to obtain a photographic plate, including the radiographic testing image quality indicator for the post-curing stage and the to-be-tested product, as well as a photographic plate including the density unevenness standard test block for the post-curing stage, and testing inclusions, holes, cracks and density non-uniformity to finally acquire X-ray test results of the NF-series heat-proof material products.

Description

technical field [0001] A kind of X-ray detection method of NF series heat-proof material product of the present invention is applicable to the heat-proof material (anti / heat-insulation material) that the latest generation of aviation and aerospace vehicles adopt, that is, the product made of NF series heat-proof material is in the stage of development process and Related technologies and methods for X-ray detection of internal defects in the final curing and molding stage of the product, as well as the production of X-ray negative film maps of typical internal defects. Background technique [0002] NF series heat-resistant material products are the latest generation of aviation and aerospace vehicles used in anti- / heat-insulation materials. It can meet the surface protection / heat insulation requirements during the flight of aviation and aerospace vehicles. NF heat-resistant material products are made of carbon fiber mesh tires and quartz mesh tires according to the regular ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/04
CPCG01N23/04
Inventor 孙利高小松马宁杨耀东
Owner BEIJING SATELLITE MFG FACTORY
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