CN109632843A - A kind of composite material image quality indicator and industry CT detect quality judging method - Google Patents
A kind of composite material image quality indicator and industry CT detect quality judging method Download PDFInfo
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- CN109632843A CN109632843A CN201811486998.5A CN201811486998A CN109632843A CN 109632843 A CN109632843 A CN 109632843A CN 201811486998 A CN201811486998 A CN 201811486998A CN 109632843 A CN109632843 A CN 109632843A
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- 239000002131 composite material Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 79
- 238000012360 testing method Methods 0.000 claims abstract description 58
- 230000007547 defect Effects 0.000 claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 41
- 239000011148 porous material Substances 0.000 claims abstract description 5
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 238000002591 computed tomography Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 16
- 238000007689 inspection Methods 0.000 description 4
- 238000002601 radiography Methods 0.000 description 4
- 235000013399 edible fruits Nutrition 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000002247 constant time method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
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Abstract
The present invention proposes a kind of composite material image quality indicator and industry CT detection quality judging method, is made of a series of through-hole for the different pore sizes processed on substrate and substrate and/or a series of the air gap of different in width.For the present invention relative to that need to make Defect Comparison standard specimen identical with detected object size, shape, production is simple, cost is relatively low, greatly reduces industry CT testing cost.
Description
Technical field
The present invention relates to a kind of composite material image quality indicators and industry CT to detect quality judging method, belongs to composite material industry
CT detects quality judging technical field.
Background technique
Industry CT detection technique is one of the main means of composite inner quality testing, particularly with porous composite wood
Material, industry CT can effectively detect the hole of material internal, be mingled with, crackle, layering the defects of.Industry CT is to defects detection point
Resolution depends on the features such as density, size, the shape of industry CT testing conditions and detected object.Industry CT is being carried out to product
When detection, when only its detection resolution meets the requirement of product minimum defects detection, industry CT testing result could be used for product
Internal soundness evaluation.
In order to evaluate industry CT detection resolution, production and test product phase are required in relevant industry CT examination criteria
With comparison standard specimen, it is identical as test product to compare the parameters such as size, shape, material, the density of standard specimen, in comparison standard specimen
The preset various sizes of defect in portion first detects comparison standard specimen when carrying out industry CT detection, if the inspection in comparison standard specimen
The preset defect measured meets testing requirements, then illustrates that the detection parameters of industry CT meet the testing requirements of the category, by
In comparison standard specimen and product to be measured in addition to it is internal it is preset it is defective other than, the parameters such as size, shape, material, density with tested production
Condition is same, and the knot of identical defects detection resolution ratio is also obtained using the detection parameters of industry CT identical with detection comparison standard specimen
Fruit.This kind of industry CT method as specified in current standard needs production and object size to be measured, shape, material, density etc.
Parameter comparison standard specimen all the same, this kind of method are only applicable to product of large quantities.For composite material at high cost, that batch is small
Product carries out industry CT detection according to the standard promulgated at present, in order to characterize the defects detection resolution ratio of industry CT testing result,
Even the product to be detected of same type of material different shape, size, also need production one with test product size, shape, material,
Density comparison standard specimen all the same, testing cost are too high.
X-ray radiography detection method uses image quality indicator in presently disclosed data, sentences for quality in X-ray radiography detection
Fixed, X-ray radiography image quality indicator is mainly used for demarcating sensitivity of the ray on scanning thickness direction, and image quality indicator need to be made into step
Shape, hole depth gradually changes on image quality indicator, and for the hole of different depth, its ray penetration thickness is also all different, main anti-
It is within the scope of blackness as defined in egative film in the intensity of egative film after answering ray to penetrate different-thickness, cannot directly react device to hole
Hole, be mingled with, crackle the defects of detection resolution.X-ray radiography image quality indicator and application method can not fit and use industry CT side
Method detection.
Summary of the invention
It is an object of the invention to overcome the shortage of prior art, provide a kind of suitable for determining that industry CT defects detection is differentiated
The image quality indicator and industry CT of rate detect quality judging method.
Technical solution of the invention: a kind of composite material image quality indicator, by processed on substrate and substrate it is a series of not
With the through-hole in aperture and/or a series of the air gap composition of different in width.
The substrate is process using the composite material same or similar with detected product.
The substrate shape is sheet, and thickness is greater than the slice thickness of industry CT detection.
The depth of the through-hole is greater than the slice thickness of industry CT detection, and a series of through-holes sequentially arrange by size, can
To be from left to right to arrange, diameter is gradually increased or is gradually reduced.
The minimum diameter of the through-hole is not more than the hole minimum dimension that industry CT testing requirements detect, two neighboring
Through-hole minimum spacing is greater than the diameter of large hole in the two neighboring through-hole.
The air gap depth is greater than the slice thickness of industry CT detection, and a series of air gap widths are suitable by size
Sequence arrangement, can be and from left to right arrange, width is gradually increased or is gradually reduced.
The air gap is penetrating along substrate width direction, and the through-hole is penetrating along substrate thickness direction.
The air gap minimum widith is minimum wide no more than the crackle that industry CT testing requirements detect, lamination defect
Degree, two neighboring the air gap minimum spacing are greater than the width of larger gap in the two neighboring the air gap.
A kind of industry CT detection quality judging method, is realized by following steps:
The first step prepares composite material image quality indicator,
The composite material image quality indicator is by a series of through-hole of different pore sizes processed on substrate and substrate and/or a system
The air gap of column different in width forms;
Composite material image quality indicator prepared by the first step is placed on the industry CT on product to be measured needed to detect and cut by second step
Piece position, composite material image quality indicator is parallel with slice, and through-hole all in composite material image quality indicator is included on industry CT slice
The air gap and;
Third step carries out industrial CT scan to the product for being placed with composite material image quality indicator, obtains Files from Industrial CT Slicing,
Files from Industrial CT Slicing includes the section of test product and the section of composite material image quality indicator;
4th step observes composite material picture in Files from Industrial CT Slicing for the Files from Industrial CT Slicing that third step obtains
Matter meter hole, gap testing result, the minimum hole and the smallest annular clearance which may recognize that represent the production
The industry CT detection resolution of product.
If can recognize that in INDUSTRIAL CT IMAGE in this step, minimum hole, the smallest annular clearance meet the defects detection of product and want
It asks, then the industry CT testing result can be used for determining the internal soundness of the product.
The present invention compared with prior art the utility model has the advantages that
(1) for the present invention relative to that need to make Defect Comparison standard specimen identical with detected object size, shape, production is simple
List, cost is relatively low, greatly reduces industry CT testing cost;
(2) present invention has stronger versatility, can be adapted for same type of material difference size, the work of different shape product
Industry CT detection;
(3) application method of the present invention is simple, only needs to ask to be placed on when carrying out industry CT detection to composite products
Slice position to be detected;
(4) industry CT testing result determination method of the present invention is intuitively efficient, can according to image quality indicator in industry CT detection image
The features such as hole, the air gap of identification can quickly obtain the defects detection resolution ratio of industry CT detection, quickly determine detection knot
Fruit;
(5) present invention only determines final detection result independent of detection parameters, product feature, can be to inspection
It surveys result and fast and efficiently makes reliable judgement;
(6) present invention can obtain the CT image of image quality indicator and measured section simultaneously, be determined according to the result of image quality indicator
The internal soundness whether testing result can be used for product determines that every product carries out being required to tie detection when industry CT detection
The reliability of fruit is evaluated;And currently used industry CT judges the inspection of other products using the testing result of comparison standard specimen
It surveys whether result can be used for interiors of products performance rating, only the testing result reliability of standard specimen is evaluated, if having detected
After comparison standard specimen during to other product testings, it may occur that the reasons such as parameter setting mistake, system performance decline lead to work
The phenomenon that industry CT detection detection resolution is reduced and can not be found in time, can effectively avoid the hair of such phenomenon using the present invention
It is raw.
Detailed description of the invention
Fig. 1 is through-hole type image quality indicator structural schematic diagram of the present invention (a is top view, and b is main view);
Fig. 2 is image quality indicator structural schematic diagram in the air gap of the present invention (a is top view, and b is main view);
Fig. 3 is flow chart of the present invention.
Specific embodiment
Below with reference to specific example and attached drawing, the present invention is described in detail.
The present invention proposes composite material image quality indicator as shown in Figure 1, 2, by a series of differences processed on substrate 1 and substrate
The through-hole 2 in aperture and/or a series of the air gap 3 of different in width form.
Through-hole 2 and the air gap 3 can process on a substrate, can also be selected with separate machined according to testing requirements
With.If testing requirements only require the isometric type defect in gaging hole hole, it is only necessary to select image quality indicator shown in FIG. 1;If detection is wanted
Ask only require detect crackle, layering homalographic type defect, it is only necessary to select image quality indicator shown in Fig. 2;If requiring to examine simultaneously
The isometric type defect of hole and crackle homalographic type defect are measured, then needs simultaneous selection Fig. 1, image quality indicator shown in 2, it can will
It is processed on the same substrate.
Substrate 1 is process using the composite material same or similar with detected product, and substrate shape is sheet,
Thickness is greater than the slice thickness of industry CT detection.
The present invention is identical to refer to that substrate material is identical as test product material composition, density, and it is tested that substrate can be used for this
The detection of product;And the material of the similar material for referring to substrate and test product composition, density are slightly different, substrate at this time
The detection that can be used for the test product, for the composite material of the different shape of identical material, structure, batch, material group
At, density may slightly have difference (slightly it is identical to generally refer to material composi for difference, density difference in size ± 10% with
It is interior), it can also be detected with same substrate, improve the versatility of detection.
Substrate of the invention can not have to be processed into type, be processed into plate, do not have with type or plate to testing result
Having an impact, is processed into plate, versatility is good, it can also be according to requiring to be processed into type, versatility is declined, with specific reference to reality
Border requires to determine.
Through-hole 1 as shown in Figure 1a, it is penetrating along substrate thickness direction, depth be greater than industry CT detection slice thickness, one
Matrix of holes sequentially arranges by size, can be and from left to right arranges, and diameter is gradually increased or is gradually reduced.The minimum of through-hole
Diameter is not more than the hole minimum dimension that detects of industry CT testing requirements, two neighboring through-hole minimum spacing be greater than this adjacent two
The diameter of large hole in a through-hole.
The air gap is as shown in Figure 2 a, penetrating along substrate width direction, and depth is greater than the slice thickness of industry CT detection,
A series of air gap widths sequentially arrange by size, can be and from left to right arrange, and width is gradually increased or is gradually reduced.
The air gap minimum widith is not more than crackle, the lamination defect minimum widith that industry CT testing requirements detect, two neighboring sky
Gas gap minimum spacing is greater than the width of larger gap in the two neighboring the air gap.
Image quality indicator of the invention instead of existing industry CT detect in the identical comparison standard specimen of test product size that makes,
It carries out that image quality indicator need to be only attached to the position to be detected when industry CT detection, INDUSTRIAL CT IMAGE is obtained, due to processing in image quality indicator
Hole and the air gap characterize this according to the bore hole size and air gap size that may recognize that in industry CT detection image
Under the conditions of industry CT defects detection resolution ratio.
The present invention also provides a kind of industry CTs as shown in Figure 3 to detect quality judging method, is realized by following steps:
1, composite material image quality indicator is prepared
Composite material image quality indicator is by a series of through-hole of different pore sizes processed on substrate and substrate and/or a series of differences
The air gap of width forms.
2, composite material image quality indicator is placed on to the industry CT slice position on product to be measured needed to detect, composite material picture
Matter meter is parallel with slice, and through-hole and the air gap all in composite material image quality indicator are included on industry CT slice.
3, industrial CT scan is carried out to the product for being placed with composite material image quality indicator, obtains Files from Industrial CT Slicing, industry
CT sectioning image includes the section of test product and the section of composite material image quality indicator.
4, for the Files from Industrial CT Slicing of acquisition, observe composite material image quality indicator hole in Files from Industrial CT Slicing,
The testing result of gap, the minimum hole and the smallest annular clearance which may recognize that represent the industry CT inspection of the product
Survey resolution ratio.
If can recognize that in INDUSTRIAL CT IMAGE in this step, minimum hole, the smallest annular clearance meet the defects detection of product and want
It asks, then the industry CT testing result can be used for determining the internal soundness of the product.
Existing industry CT evaluation method is required to evaluate industry CT detection quality according to comparison standard specimen internal flaw,
Before detecting to test product, industry CT detection first is carried out to comparison standard specimen, due to the comparison size of standard specimen, shape, density,
The parameters such as material are identical as test product, using identical parameters, compare the defects detection resolution ratio of standard specimen with
The defects detection resolution ratio of test product is consistent.If the defects of comparison standard specimen testing result meets test product defects detection and wants
It asks, shows also to meet testing requirements to the industry CT detection of product using the parameter, then using the parameter to the type product
Industry CT testing result can be used for evaluating the internal soundness of product;If the defects of comparison standard specimen testing result is unsatisfactory for being tested
The defects detection requirement of product, then cannot be used for evaluating production to be measured using industry CT testing result of the parameter to the type product
The internal soundness of product.
And composite material image quality indicator is placed on slice position to be measured by quality judging method of the present invention, obtained industry CT figure
As determining industry CT by may recognize that hole, clearance features in image quality indicator comprising testee section and image quality indicator section
To the defects detection resolution ratio of test product, if the hole that may recognize that in image quality indicator, clearance features meet defects detection resolution
Rate, then the testing result of this time can be used for evaluating the internal soundness of test product.If the hole that may recognize that in image quality indicator,
Gap feature is unsatisfactory for test product defects detection resolution ratio, then the testing result of this time cannot be used for the inside of evaluation test product
Quality.
A series of industry CT of the present invention gap for the through-hole and different in width that different-diameters are machined on image quality indicator, passes through
The width of the diameter in the hole in Files from Industrial CT Slicing and the air gap characterizes detection image quality, direct reaction industry
CT to hole, be mingled with isometric type defect and crackle, the detection detection resolution for being mingled with homalographic type defect.
Embodiment 1
As shown in Figure 1, composite material picture (pass image quality indicator) is by the through-hole 2 for the different-diameter processed on substrate 1 and substrate
Composition, as shown in Fig. 1 a, b, the diameter of through-hole is from left to right sequentially reduced, and the spacing of the through-hole of arbitrary neighborhood be all larger than it is adjacent
Through-hole diameter, be gradually reduced from 1.6mm~0.4mm through-hole diameter.It can be used to require to detect the hole of diameter 0.4mm or more
Hole, inclusion defect composite products.
As shown in Fig. 2, between air of the composite material picture (groove profile image quality indicator) by the different in width processed on substrate 1 and substrate
Gap 3 forms.As shown in Fig. 2 a, b, gap from left to right arranges width and is sequentially increased, and the spacing in the gap of arbitrary neighborhood is big
In adjacent gap width.The width of the air gap is from 0.2mm to 0.7mm.Can be used to require to detect width 0.2mm with
On layering, crack defect composite products.
Embodiment 2
Certain composite products requires to detect that diameter exists in the hole, inclusion defect and width of 0.8mm or more
The layering of 0.2mm or more, crack defect, and slice thickness is not more than 0.2mm.
Quality judging method includes the following steps:
1, pass image quality indicator and groove profile image quality indicator are prepared
Pass image quality indicator is similar as shown in Figure 1, and the minimum hole diameter on pass image quality indicator is 0.2mm, groove profile image quality indicator
Similar as shown in Figure 2, the minimum air void width on groove profile image quality indicator is 0.2mm, meets the testing requirements of composite wood product,
It can be used for the industry CT detection of this kind of composite products.
2, image quality indicator is placed on to the industry CT slice position on product to be measured needed to detect, image quality indicator is parallel with slice,
Industry CT slice can include hole and gap all on image quality indicator.
3, industrial CT scan is carried out to the product for being placed with image quality indicator, obtains Files from Industrial CT Slicing, industry CT slice map
As the section comprising test product and the section of image quality indicator.
4, for the Files from Industrial CT Slicing of acquisition, the testing result of image quality indicator Hole, gap is observed, in the CT image
The minimum hole and the smallest annular clearance that may recognize that represent the industry CT detection resolution of the product.
If 5, can recognize that in INDUSTRIAL CT IMAGE, minimum hole, the smallest annular clearance meet the defects detection requirement of product,
The industry CT testing result can be used for determining the internal soundness of the product.
Product and image quality indicator carry out industry CT scanning imagery under identical detection parameters, and are used to characterize industry CT detection
The upper while section feature comprising product, image quality indicator of the industry CT slice of resolution ratio, image quality indicator can be with effecting reaction industry CT pair
The detection resolution of interiors of products defect.
Industry CT defects detection resolution ratio is indicated with the minimal characteristic that may recognize that in image quality indicator.Volume flaw detection
Resolution ratio indicates with the minimum bore hole size that may recognize that in image quality indicator, can in area-type defects detection resolution ratio image quality indicator
The smallest annular clearance that identifies indicates.
When industry CT defects detection resolution ratio is required not less than defects detection, which can be only used for commenting
Sentence internal soundness.
Unspecified part of the present invention is known to the skilled person technology.
Claims (10)
1. a kind of composite material image quality indicator, it is characterised in that: by a series of through-hole for the different pore sizes processed on substrate and substrate
A series of and/or the air gap composition of different in width.
2. a kind of composite material image quality indicator according to claim 1, it is characterised in that: the substrate is used and is detected
Product same or similar composite material is process, and substrate shape is sheet, and thickness is greater than the slice of industry CT detection
Thickness.
3. a kind of composite material image quality indicator according to claim 1, it is characterised in that: the through-hole is along substrate thickness
Direction is penetrating, and depth is greater than the slice thickness of industry CT detection, and a series of through-holes sequentially arrange by size.
4. a kind of composite material image quality indicator according to claim 3, it is characterised in that: the minimum diameter of the through-hole is not
Greater than the hole minimum dimension that industry CT testing requirements detect, two neighboring through-hole minimum spacing is greater than the two neighboring through-hole
The diameter of middle large hole.
5. a kind of composite material image quality indicator according to claim 1, it is characterised in that: the air gap is along substrate
Width direction is penetrating, and depth is greater than the slice thickness of industry CT detection, and a series of air gap widths sequentially arrange by size.
6. a kind of composite material image quality indicator according to claim 5, it is characterised in that: the air gap minimum widith
Crackle, the lamination defect minimum widith detected no more than industry CT testing requirements, two neighboring the air gap minimum spacing are big
The width of larger gap in the two neighboring the air gap.
7. a kind of industry CT detects quality judging method, which is characterized in that realized by following steps:
The first step prepares composite material image quality indicator,
The composite material image quality indicator by a series of through-hole of different pore sizes processed on substrate and substrate and/or it is a series of not
The air gap with width forms;
Composite material image quality indicator prepared by the first step is placed on the industry CT on product to be measured needed to detect and is sliced position by second step
It sets, composite material image quality indicator is parallel with slice, and through-hole and sky all in composite material image quality indicator are included on industry CT slice
Gas gap;
Third step carries out industrial CT scan to the product for being placed with composite material image quality indicator, obtains Files from Industrial CT Slicing, industry
CT sectioning image includes the section of test product and the section of composite material image quality indicator;
4th step observes composite material image quality indicator in Files from Industrial CT Slicing for the Files from Industrial CT Slicing that third step obtains
Hole, gap testing result, the minimum hole and the smallest annular clearance which may recognize that represent the product
Industry CT detection resolution.
8. a kind of industry CT according to claim 7 detects quality judging method, it is characterised in that: base in the first step
Piece is process using the composite material same or similar with detected product, and substrate shape is sheet, and thickness is greater than work
The slice thickness of industry CT detection.
9. a kind of industry CT according to claim 7 detects quality judging method, it is characterised in that: lead in the first step
Hole is penetrating along substrate thickness direction, and depth is greater than the slice thickness of industry CT detection, and a series of through-holes sequentially arrange by size,
The minimum diameter of through-hole is not more than the hole minimum dimension that industry CT testing requirements detect, two neighboring through-hole minimum spacing is big
The diameter of large hole in the two neighboring through-hole.
10. a kind of industry CT according to claim 7 detects quality judging method, it is characterised in that: in the first step
The air gap is penetrating along substrate width direction, and depth is greater than the slice thickness of industry CT detection, a series of air gap widths
Sequence arranges by size, and the air gap minimum widith is minimum no more than the crackle that industry CT testing requirements detect, lamination defect
Width, two neighboring the air gap minimum spacing are greater than the width of larger gap in the two neighboring the air gap.
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CN111307839A (en) * | 2020-03-19 | 2020-06-19 | 广东省医疗器械质量监督检验所 | Preparation method of flat-plate hole type image quality meter |
CN111666629A (en) * | 2020-05-15 | 2020-09-15 | 成都飞机工业(集团)有限责任公司 | Design method of part surface defect rapid detection sample plate |
CN111896567A (en) * | 2020-07-23 | 2020-11-06 | 航发优材(镇江)增材制造有限公司 | Industrial CT minimum recognizable defect capability evaluation method |
CN113484343A (en) * | 2021-06-25 | 2021-10-08 | 成都飞机工业(集团)有限责任公司 | Detection method for detection performance of hole type defects of 3D printing workpiece |
CN114152492A (en) * | 2021-12-15 | 2022-03-08 | 武汉三联特种技术股份有限公司 | Method for manufacturing sensitivity verification sheet for negative scanning instrument |
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