CN103018327A - Ultrasonic flaw detection brazed rate measuring method of rectifier of aero-engine - Google Patents
Ultrasonic flaw detection brazed rate measuring method of rectifier of aero-engine Download PDFInfo
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- CN103018327A CN103018327A CN2012105016454A CN201210501645A CN103018327A CN 103018327 A CN103018327 A CN 103018327A CN 2012105016454 A CN2012105016454 A CN 2012105016454A CN 201210501645 A CN201210501645 A CN 201210501645A CN 103018327 A CN103018327 A CN 103018327A
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Abstract
The invention belongs to a detection technology of a brazing effect and relates to the improvement of an ultrasonic flaw detection brazed rate measuring method of a rectifier of an aero-engine. The ultrasonic flaw detection brazed rate measuring method is characterized by comprising the measuring steps of: carrying out ultrasonic flaw detection C scanning; identifying an image; calculating a brazed rate Zj of a No. 1 blade K1 with an un-brazed region; and calculating the brazed rates of other blades with the un-brazed regions. According to the ultrasonic flaw detection brazed rate measuring method disclosed by the invention, the calculation precision of the brazed rate can be greatly improved, and the repeatability and the reproducibility of the measurement of the brazed rate are good. An erroneous judgment problem of judging a qualified part to be an ultra-poor product or judging the ultra-poor product into the qualified product is avoided, so that the wastes are avoided and the potential safety hazards are eliminated.
Description
Technical field
The invention belongs to soldering effect detection technology, relate to the improvement to aeromotor rectifier UT (Ultrasonic Testing) ratio of brazing area measuring method.
Background technology
Traditional aeromotor rectifier UT (Ultrasonic Testing) ratio of brazing area measuring method is the method that adopts estimation.First the aeromotor rectifier is carried out UT (Ultrasonic Testing) C scanning, then the total area of brazing area carried out dimensional measurement and estimation, again on the C scanned picture not pricker the position area and carry out dimensional measurement and estimation, deduct not pricker with the total area at last and area again divided by the total area, obtain the ratio of brazing area of this part.Its shortcoming is: because that the not pricker on the C scintigram being shaped as of zone is randomly shaped, there is very large error in very irregular to the estimation of its area, causes the error calculated of ratio of brazing area large, precision is low, repeatability and repeatability are all poor.Be positioned near the acceptance criteria value situation for ratio of brazing area, probably cause erroneous judgement, qualified part are judged to ultra-poor products and cause waste; Perhaps ultra-poor products are judged to the potential safety hazard that certified products cause engine.
Summary of the invention
The objective of the invention is: propose a kind of aeromotor rectifier UT (Ultrasonic Testing) ratio of brazing area measuring method that can improve the computational accuracy of ratio of brazing area, to stop erroneous judgement, avoid waste, eliminate safe hidden trouble.
Technical scheme of the present invention is: aeromotor rectifier UT (Ultrasonic Testing) ratio of brazing area measuring method, it is characterized in that, and the step of measurement is:
1, carries out UT (Ultrasonic Testing) C scanning: at first, according to clockwise or counterclockwise order all blades are numbered N
i, i=1,2 ..., n, n are the blade quantity of aeromotor rectifier, then UT (Ultrasonic Testing) C scanning are carried out at aeromotor rectifier soldering position, the C scan image of acquisition BMP form or JPG form also is stored in the computing machine;
2, image recognition:
2.1, the C scan image is identified, the zone of identification does not comprise the bore region at aeromotor rectifier soldering position, the residual area of removing behind the bore region is the brazing area total area, white portion in the image the zone for pricker not, and ratio of brazing area is: pricker the percentage of region area and the ratio of the brazing area total area;
2.2, find out in the C scan image all and exist not pricker the blade in zone and renumber K
j, j=1,2 ..., p, p≤n;
3, calculating number one exists not pricker the blade K in zone
1Ratio of brazing area Z
1:
3.1, exist pricker not the blade K in zone number one
1In all not pricker the zone and be numbered successively and be M
s, s=1,2 ..., w;
3.2, measure the pixel value of the brazing area total area: use image processing software to measure number one and exist not pricker the blade K in zone
1The pixel value of the middle brazing area total area is designated as Y
j
3.3, measure the pixel value that pricker not the zone: use image processing software to measure successively number one and exist not pricker the blade K in zone
1In all not pricker regional M
sPixel value, be designated as successively X
S1, X
S2..., X
Sw
3.4, calculate number one and exist not pricker the blade K in zone
1Ratio of brazing area Z
1:
Z
1=[Y-（X
s1+X
s2+……+X
sw）]/Y
1×100%………………………………[1]
4, calculating all the other exists pricker not the ratio of brazing area of the blade in zone: according to the method for step 3, calculate successively and exist for No. second not pricker the blade K in zone
2The blade K in zone until there is pricker not for j number
jRatio of brazing area.
Advantage of the present invention is: greatly improved the computational accuracy of ratio of brazing area, the Repeatability and Reproducibility that ratio of brazing area is measured is good.Stopped that qualified part are judged to ultra-poor products or ultra-poor products have been judged to the erroneous judgement problem of certified products, avoided waste, eliminated potential safety hazard.
Description of drawings
Fig. 1 is the rectifier UT (Ultrasonic Testing) C scintigram from certain type grade individual blade that rectifier C scintigram intercepts.Among the figure, the 1st, number one not pricker regional K
1, 2 No. second not pricker regional K
2, the like, 5 be No. five not pricker regional K
5A and B are bore region, are non-brazing area.
Embodiment
The below is described in further details the present invention.Aeromotor rectifier UT (Ultrasonic Testing) ratio of brazing area measuring method is characterized in that, the step of measurement is:
1, carries out UT (Ultrasonic Testing) C scanning: at first, according to clockwise or counterclockwise order all blades are numbered N
i, i=1,2 ..., n, n are the blade quantity of aeromotor rectifier, then UT (Ultrasonic Testing) C scanning are carried out at aeromotor rectifier soldering position, the C scan image of acquisition BMP form or JPG form also is stored in the computing machine;
2, image recognition:
2.1, the C scan image is identified, the zone of identification does not comprise the bore region at aeromotor rectifier soldering position, the residual area of removing behind the bore region is the brazing area total area, white portion in the image the zone for pricker not, and ratio of brazing area is: pricker the percentage of region area and the ratio of the brazing area total area;
2.2, find out in the C scan image all and exist not pricker the blade in zone and renumber K
j, j=1,2 ..., p, p≤n;
3, calculating number one exists not pricker the blade K in zone
1Ratio of brazing area Z
1:
3.1, exist pricker not the blade K in zone number one
1In all not pricker the zone and be numbered successively and be M
s, s=1,2 ..., w;
3.2, measure the pixel value of the brazing area total area: use image processing software to measure number one and exist not pricker the blade K in zone
1The pixel value of the middle brazing area total area is designated as Y
j
3.3, measure the pixel value that pricker not the zone: use image processing software to measure successively number one and exist not pricker the blade K in zone
1In all not pricker regional M
sPixel value, be designated as successively X
S1, X
S2..., X
Sw
3.4, calculate number one and exist not pricker the blade K in zone
1Ratio of brazing area Z
1:
Z
1=[Y-（X
s1+X
s2+……+X
sw）]/Y
1×100%………………………………[1]
4, calculating all the other exists pricker not the ratio of brazing area of the blade in zone: according to the method for step 3, calculate successively and exist for No. second not pricker the blade K in zone
2The blade K in zone until there is pricker not for j number
jRatio of brazing area.
The step of measuring is as follows:
1, carries out UT (Ultrasonic Testing) C scanning: at first, according to clockwise or counterclockwise order all blades are numbered N
i, i=1,2 ..., 125,125 is the blade quantity of aeromotor rectifier, then UT (Ultrasonic Testing) C scanning is carried out at aeromotor rectifier soldering position, the C scan image of acquisition BMP form or JPG form also is stored in the computing machine;
2, image recognition:
2.1, the C scan image is identified;
2.2, find out in the C scan image only one and exist pricker not the blade in zone and renumber K
1
1.3, calculate and to exist not pricker the blade K in zone
1Ratio of brazing area Z
1:
1.3.1, will exist pricker not the blade K in zone
1In all not pricker the zone and be numbered successively and be M
s, s=1,2;
1.3.2, measure the pixel value of the brazing area total area: use image processing software measurements to exist not pricker regional blade K
1The pixel value of the middle brazing area total area is designated as Y
1=18338;
1.3.3, measure the pixel value that pricker not the zone: use image processing software to measure successively to exist not pricker the blade K in zone
1In all not pricker regional M
sPixel value, be designated as successively X
S1=446 pixels,
X
S2=568 pixels;
1.3.4, calculate and to exist not pricker the blade K in zone
1Ratio of brazing area Z
1:
Z
1=[18338-（446+568）]/18338×100%=94.47%。
The step of measuring is as follows:
1, carries out UT (Ultrasonic Testing) C scanning: at first, according to clockwise or counterclockwise order all blades are numbered N
i, i=1,2 ..., 136,136 is the blade quantity of aeromotor rectifier, then UT (Ultrasonic Testing) C scanning is carried out at aeromotor rectifier soldering position, the C scan image of acquisition BMP form or JPG form also is stored in the computing machine;
2, image recognition:
2.1, the C scan image is identified;
2.2, find out in the C scan image all and exist not pricker the blade in zone and renumber K
1, K
2
1.3, calculate number one and exist not pricker the blade K in zone
1Ratio of brazing area Z
1:
1.3.1, exist pricker not the blade K in zone number one
1In only not pricker the zone and be numbered and be M
s, s=1;
1.3.2, measure the pixel value of the brazing area total area: use image processing software to measure number one and exist not pricker the blade K in zone
1The pixel value of the middle brazing area total area is designated as Y
1=22345;
1.3.3, measure the pixel value that pricker not the zone: use image processing software to measure number one and exist not pricker the blade K in zone
1In not pricker regional M
1Pixel value, be designated as X
S1=1046 pixels;
1.3.4, calculate number one and exist not pricker the blade K in zone
1Ratio of brazing area Z
1:
Z
1=（22345-1046）/22345×100%=95.32%
1.4, according to the method for step 1.3, calculate and exist for No. second not pricker the blade K in zone
2Ratio of brazing area Z
2=[22345-(3789+2436)]/22345 * 100%=72.14%.
The step of measuring is as follows:
1, carries out UT (Ultrasonic Testing) C scanning: at first, according to clockwise or counterclockwise order all blades are numbered N
i, i=1,2 ..., 105,105 is the blade quantity of aeromotor rectifier, then UT (Ultrasonic Testing) C scanning is carried out at aeromotor rectifier soldering position, the C scan image of acquisition BMP form or JPG form also is stored in the computing machine;
2, image recognition:
2.1, the C scan image is identified;
2.2, find out in the C scan image all and exist not pricker the blade in zone and renumber K
1, K
2
1.3, calculate number one and exist not pricker the blade K in zone
1Ratio of brazing area Z
1:
1.3.1, exist pricker not the blade K in zone number one
1In all not pricker the zone and be numbered successively and be M
s, s=1,2;
1.3.2, measure the pixel value of the brazing area total area: use image processing software to measure number one and exist not pricker the blade K in zone
1The pixel value of the middle brazing area total area is designated as Y
1=19547;
1.3.3, measure the pixel value that pricker not the zone: use image processing software to measure successively number one and exist not pricker the blade K in zone
1In all not pricker regional M
sPixel value, be designated as successively X
S1=2314 pixels, X
S2=7057 pixels;
1.3.4, calculate number one and exist not pricker the blade K in zone
1Ratio of brazing area Z
1:
Z
1=[19547-（2314+7057）]/19547×100%=52.06%。
1.4, according to the method for step 1.3, calculate and exist for No. second not pricker the blade K in zone
2Ratio of brazing area Z
2=[19547-(3831+6543)]/19547 * 100%=46.93%.
Claims (1)
1. aeromotor rectifier UT (Ultrasonic Testing) ratio of brazing area measuring method is characterized in that, the step of measurement is:
1.1, carry out UT (Ultrasonic Testing) C scanning: at first, according to clockwise or counterclockwise order all blades are numbered N
i, i=1,2 ..., n, n are the blade quantity of aeromotor rectifier, then UT (Ultrasonic Testing) C scanning are carried out at aeromotor rectifier soldering position, the C scan image of acquisition BMP form or JPG form also is stored in the computing machine;
1.2, image recognition:
1.2.1, the C scan image is identified, the zone of identification does not comprise the bore region at aeromotor rectifier soldering position, the residual area of removing behind the bore region is the brazing area total area, white portion in the image the zone for pricker not, and ratio of brazing area is: pricker the percentage of region area and the ratio of the brazing area total area;
1.2.2, find out in the C scan image all and exist not pricker the blade in zone and renumber K
j, j=1,2 ..., p, p≤n;
1.3, calculate number one and exist not pricker the blade K in zone
1Ratio of brazing area Z
1:
1.3.1, exist pricker not the blade K in zone number one
1In all not pricker the zone and be numbered successively and be M
s, s=1,2 ..., w;
1.3.2, measure the pixel value of the brazing area total area: use image processing software to measure number one and exist not pricker the blade K in zone
1The pixel value of the middle brazing area total area is designated as Y
j
1.3.3, measure the pixel value that pricker not the zone: use image processing software to measure successively number one and exist not pricker the blade K in zone
1In all not pricker regional M
sPixel value, be designated as successively X
S1, X
S2..., X
Sw
1.3.4, calculate number one and exist not pricker the blade K in zone
1Ratio of brazing area Z
1:
Z
1=[Y-（X
s1+X
s2+……+X?
sw）]/Y
1×100%………………………………[1]
1.4, calculate all the other and exist pricker not the ratio of brazing area of the blade in zone: according to the method for step 1.3, calculate successively and exist for No. second not pricker the blade K in zone
2The blade K in zone until there is pricker not for j number
jRatio of brazing area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105016454A CN103018327A (en) | 2012-11-29 | 2012-11-29 | Ultrasonic flaw detection brazed rate measuring method of rectifier of aero-engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105016454A CN103018327A (en) | 2012-11-29 | 2012-11-29 | Ultrasonic flaw detection brazed rate measuring method of rectifier of aero-engine |
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| Publication Number | Publication Date |
|---|---|
| CN103018327A true CN103018327A (en) | 2013-04-03 |
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ID=47967166
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105016454A Pending CN103018327A (en) | 2012-11-29 | 2012-11-29 | Ultrasonic flaw detection brazed rate measuring method of rectifier of aero-engine |
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|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021704A (en) * | 2015-08-07 | 2015-11-04 | 上海和伍新材料科技有限公司 | Measurement method for improving accuracy of brazed rate of nondestructive ultrasonic inspection |
| CN105044214A (en) * | 2015-08-07 | 2015-11-11 | 上海和伍新材料科技有限公司 | Method for improving accuracy of ultrasonic nondestructive flaw detection brazing area ratio |
| CN107271541A (en) * | 2016-04-08 | 2017-10-20 | 贵州黎阳航空动力有限公司 | A kind of turbo blade eddy current inspection reference block clamp for machining and preparation method thereof |
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2012
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021704A (en) * | 2015-08-07 | 2015-11-04 | 上海和伍新材料科技有限公司 | Measurement method for improving accuracy of brazed rate of nondestructive ultrasonic inspection |
| CN105044214A (en) * | 2015-08-07 | 2015-11-11 | 上海和伍新材料科技有限公司 | Method for improving accuracy of ultrasonic nondestructive flaw detection brazing area ratio |
| CN105021704B (en) * | 2015-08-07 | 2017-12-05 | 上海和伍精密仪器股份有限公司 | A kind of measuring method for improving the ultrasonic flaw detection ratio of brazing area degree of accuracy |
| CN105044214B (en) * | 2015-08-07 | 2018-05-25 | 上海和伍精密仪器股份有限公司 | A kind of method for improving ultrasonic flaw detection ratio of brazing area accuracy |
| CN107271541A (en) * | 2016-04-08 | 2017-10-20 | 贵州黎阳航空动力有限公司 | A kind of turbo blade eddy current inspection reference block clamp for machining and preparation method thereof |
| CN107271541B (en) * | 2016-04-08 | 2024-02-02 | 中国航发贵州黎阳航空动力有限公司 | Turbine blade eddy current flaw detection reference block machining clamp and manufacturing method thereof |
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Application publication date: 20130403 |