X-ray inspection method for nf series heat-resistant material products
A technology for radiographic testing and heat-proof materials, applied in the direction of material analysis using radiation, can solve the problem of non-destructive testing technology without corresponding testing, and achieve the effect of effective testing
Active Publication Date: 2021-06-11
BEIJING SATELLITE MFG FACTORY
View PDF14 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
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...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| density | aaaaa | aaaaa |
Login to View More
Abstract
For the X-ray detection method of NF series heat-resistant material products, firstly, the prefabricated body stage ray detection image quality meter and the prefabricated body stage uneven density standard test block are made. Detect the negatives of the image quality meter image of the product, the prefabricated body stage, and the negative film containing the image of the standard test block with uneven density at the prefabricated body stage, perform sensitivity, metal inclusions, and low-density unevenness detection, and then make the post-curing stage radiographic inspection The image quality meter and the standard test block with uneven density in the post-curing stage are obtained, and the negative film containing the image quality meter for radiographic inspection in the post-curing stage, the image of the product to be inspected, and the negative film containing the image of the standard test block with uneven density in the post-curing stage are obtained. , cracks, and density inhomogeneity detection, and finally get the X-ray detection results of NF series heat-resistant 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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/04
CPCG01N23/04
Inventor 孙利高小松马宁杨耀东
Owner BEIJING SATELLITE MFG FACTORY