CN101819183A - Method for calibrating large-angle or small-angle longitudinal wave angle probe for ultrasonic fault detector - Google Patents
Method for calibrating large-angle or small-angle longitudinal wave angle probe for ultrasonic fault detector Download PDFInfo
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- CN101819183A CN101819183A CN201010163784A CN201010163784A CN101819183A CN 101819183 A CN101819183 A CN 101819183A CN 201010163784 A CN201010163784 A CN 201010163784A CN 201010163784 A CN201010163784 A CN 201010163784A CN 101819183 A CN101819183 A CN 101819183A
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- 239000000523 sample Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000007547 defect Effects 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000013178 mathematical model Methods 0.000 claims abstract description 4
- 238000002604 ultrasonography Methods 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 6
- 238000004164 analytical calibration Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 abstract 1
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Abstract
The invention discloses a method for calibrating a large-angle or small-angle longitudinal wave angle probe for an ultrasonic fault detector, and relates to an instrument calibration method. The method comprises an ultrasonic fault detector, and sequentially comprises the following steps of: preparing a test block used for calibrating the probe and a large-angle or small-angle longitudinal wave angle probe, wherein the test block is a material used by a workpiece during actual fault detection, and drilling two holes with the horizontal heights of h1 and h2 beyond three times of near field of the test block respectively, wherein the h1 is unequal to the h2; moving the probe back and forth on the test block until the two holes display the highest reflection echo on the ultrasonic fault detector respectively, obtaining distances S1 and S2 from the end of transmitting ultrasonic waves in the probe to the two holes respectively, and measuring distances L1 and L2 from the two holes to the front end of the probe; and obtaining a probe inner sound path a, a probe front sound path b and a probe K value according to a mathematical model. The method for calibrating the large-angle or small-angle longitudinal wave angle probe for the ultrasonic fault detector overcomes the defect that proper methods and test blocks for calibrating the K value of the longitudinal wave angle probe, the probe inner sound path a and the probe front sound path b do not exist at present.
Description
Technical field
The present invention relates to a kind of instrument calibration method, relate in particular to a kind of wide-angle and small angle longitudinal wave angle probe calibration steps that is used for ultra-sonic defect detector.
Background technology
At present when using ultra-sonic defect detector workpiece, defect to be carried out the flaw detection of wide-angle and small angle longitudinal wave, carry out the workpiece flaw detection by probe emission ultrasound wave, the workpiece, defect distance that its detection obtains is actual range and calibrated distance sum, and wherein calibrated distance is that ultrasound wave is at the inner sound path a of the inner probe of being walked of probe.In flaw detection work, the small angle longitudinal wave angle probe generally is used for detecting a flaw uses as a servant again, the bolt (mother metal) or the shaft-like workpiece of coming of new; The wide-angle longitudinal wave oblique probe coarse grain material weld seams such as austenite that generally are used for detecting a flaw.Under existing condition, the user need calibrate K Value Data and the inner sound path a of probe, the preposition sound path b of probe of longitudinal wave oblique probe, does not have test block calibration longitudinal wave oblique probe in present stage.The test block manufacturing factory of specialty, only make several standards, test block commonly used, and the longitudinal wave oblique probe calibration block does not provide on market, there is not special method calibration longitudinal wave oblique probe yet, need the flaw detection personnel to provide professional test block drawing to producer, propose to make requirement according to the needs of oneself.Producer is client's die sinking tool again according to requirement of client specially, makes test block.The cycle length of whole die sinking tool is long, and the expense of die sinking tool is born by the client, the general units up to ten thousand of die sinking expense.Before not using this method, the client is the neither one method K value of removing to calibrate longitudinal wave oblique probe often, a, b.And the test block manufacture craft has only just qualified writing of flaw detection senior staff, and the senior staff that do not detect a flaw of many factories and domestic consumer has only general flaw detection personnel.More than all workloads that has improved the flaw detection personnel greatly, prolonged the cycle of work and increased cost in producing.
Summary of the invention
Problem at above-mentioned prior art existence, the object of the invention is to provide a kind of wide-angle and small angle longitudinal wave angle probe calibration steps that is used for ultra-sonic defect detector, remedying existing ultrasound wave does not have the K value of appropriate method and test block calibration longitudinal wave oblique probe, the limitation of pop one's head in inner sound path a and the preposition sound path b of probe.
Technical scheme of the present invention is: a kind of ultra-sonic defect detector wide-angle and small angle longitudinal wave angle probe calibration steps, comprise a ultra-sonic defect detector, and it carries out the workpiece flaw detection by probe emission ultrasound wave, and this method may further comprise the steps successively:
1) prepares a test block that is used to pop one's head in calibration, an and wide-angle or a small angle longitudinal wave angle probe that is used for ultra-sonic defect detector, the employed material of workpiece when test block should be actual flaw detection, and beyond three times of near fields of test block bores 2 respectively and is respectively h apart from test block upper surface level height
1And h
2The hole, bore dia is φ, and h
1≠ h
2
2) use probe to move around, up to height h at the test block upper surface
1The hole on ultra-sonic defect detector, show the highest reflection echo, in obtaining popping one's head in ultrasound wave send end to this hole apart from S
1, and measurement this hole this moment is to the distance L of probe front end
1And then mobile probe, up to height h
2The hole on ultra-sonic defect detector, show the highest reflection echo, in obtaining popping one's head in ultrasound wave send end to this hole apart from S
2, and measurement this hole this moment is to the distance L of probe front end
2
3) according to following mathematical model obtain popping one's head in inner sound path a, probe preposition sound path b and probe K value:
τ
1＝S
1+a，τ
2＝S
2+a，(S
2+φ/2)/(S
1+φ/2)＝h
2/h
1＝n；
(1). the inner sound path of popping one's head in: a=[n (τ
1+ φ/2)-(τ
2+ φ/2)]/(n-1);
(2). probe K value: K=tgcos
-1h
1/ (τ
1+ φ/2-a);
(3). the preposition sound path of popping one's head in: b=(L
2-nL
1)/(n-1).
The invention has the beneficial effects as follows: method is simple and reliable, has changed in the past that the flaw detection personnel are merely able to rely on test block producer to make the situation of complicated test block, has reduced time and the cost of making test block greatly.
Description of drawings
Fig. 1 is the operation chart of the embodiment of the invention.
Embodiment
As one embodiment of the present invention, as shown in Figure 1, a kind of ultra-sonic defect detector wide-angle and small angle longitudinal wave angle probe calibration steps, comprise a ultra-sonic defect detector, it carries out the workpiece flaw detection by wide-angle or small angle longitudinal wave angle probe emission ultrasound wave, the workpiece, defect distance that its detection obtains is actual range and calibrated distance sum, wherein calibrated distance is that ultrasound wave is at the inner sound path a of the inner probe of being walked of probe, the ultrasound wave preposition sound path b of probe that cap is lived but quilt is popped one's head at the workpiece internal communication is convenient to find defective to arrive the horizontal range of probe forefront, and this method may further comprise the steps successively:
1) prepares a test block 2 that is used to pop one's head in calibration, an and wide-angle or a small angle longitudinal wave angle probe 1 that is used for ultra-sonic defect detector, the employed material of workpiece when test block 2 should be actual flaw detection, and beyond three times of near fields of test block 2 bores 2 respectively and is respectively h apart from test block upper surface level height
1And h
2Hole 3,4, hole 3,4 diameters are φ, and h
1≠ h
2
2) use probe 1 to move around, up to height h at test block 2 upper surfaces
1Hole 3 on ultra-sonic defect detector, show the highest reflection echo, the ultrasound wave in 1 of obtaining popping one's head in send end to this hole 3 apart from S
1, and measurement this hole 3 this moment is to the distance L of probe 1 front end
1And then mobile probe 1, up to height h
2Hole 4 on ultra-sonic defect detector, show the highest reflection echo, the ultrasound wave in 1 of obtaining popping one's head in send end to this hole 4 apart from S
2, and measurement this hole 4 this moment is to the distance L of probe 1 front end
2
3) according to following mathematical model obtain popping one's head in inner sound path a, probe preposition sound path b and probe K value, finish calibration:
τ
1＝S
1+a，τ
2＝S
2+a，(S
2+φ/2)/(S
1+φ/2)＝h
2/h
1＝n；
(1). the inner sound path of popping one's head in: a=[n (τ
1+ φ/2)-(τ
2+ φ/2)]/(n-1);
(2). probe K value: K=tgcos
-1h
1/ (τ
1+ φ/2-a);
(3). the preposition sound path of popping one's head in: b=(L
2-nL
1)/(n-1).
More than a kind of ultra-sonic defect detector wide-angle provided by the present invention and small angle longitudinal wave angle probe calibration steps have been carried out detailed introduction, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (1)
1. ultra-sonic defect detector wide-angle and small angle longitudinal wave angle probe calibration steps comprise a ultra-sonic defect detector, and it carries out the workpiece flaw detection by probe emission ultrasound wave, it is characterized in that this method may further comprise the steps successively:
1) prepares a test block that is used to pop one's head in calibration, an and wide-angle or a small angle longitudinal wave angle probe that is used for ultra-sonic defect detector, the employed material of workpiece when test block should be actual flaw detection, and beyond three times of near fields of test block bores 2 respectively and is respectively h apart from test block upper surface level height
1And h
2The hole, bore dia is φ, and h
1≠ h
2
2) use probe to move around, up to height h at the test block upper surface
1The hole on ultra-sonic defect detector, show the highest reflection echo, in obtaining popping one's head in ultrasound wave send end to this hole apart from S
1, and measurement this hole this moment is to the distance L of probe front end
1And then mobile probe, up to height h
2The hole on ultra-sonic defect detector, show the highest reflection echo, in obtaining popping one's head in ultrasound wave send end to this hole apart from S
2, and measurement this hole this moment is to the distance L of probe front end
2
3) according to following mathematical model obtain popping one's head in inner sound path a, probe preposition sound path b and probe K value:
τ
1＝S
1+a，τ
2＝S
2+a，(S
2+φ/2)/(S
1+φ/2)＝h
2/h
1＝n；
(1). the inner sound path of popping one's head in: a=[n (τ
1+ φ/2)-(τ
2+ φ/2)]/(n-1);
(2). probe K value: K=tgcos
-1h
1/ (τ
1+ φ/2-a);
(3). the preposition sound path of popping one's head in: b=(L
2-nL
1)/(n-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010163784A CN101819183A (en) | 2010-05-06 | 2010-05-06 | Method for calibrating large-angle or small-angle longitudinal wave angle probe for ultrasonic fault detector |
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|---|---|---|---|
| CN201010163784A CN101819183A (en) | 2010-05-06 | 2010-05-06 | Method for calibrating large-angle or small-angle longitudinal wave angle probe for ultrasonic fault detector |
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|---|---|
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628835A (en) * | 2012-04-19 | 2012-08-08 | 迪皮埃复材构件（太仓）有限公司 | System and method for detecting bonding quality of wind power generation blade web plate |
| CN103207240A (en) * | 2013-03-27 | 2013-07-17 | 国家电网公司 | Angle probe ultrasonic field longitudinal sound pressure distribution measuring method |
| CN103217486A (en) * | 2013-03-27 | 2013-07-24 | 国家电网公司 | Angle probe ultrasonic field transverse sound pressure distribution measuring method |
| CN103217485A (en) * | 2013-03-27 | 2013-07-24 | 国家电网公司 | Angle probe ultrasonic field sound pressure distribution measuring test block |
| CN104075645A (en) * | 2014-07-18 | 2014-10-01 | 攀枝花天誉工程检测有限公司 | Single-oblique probe sound beam axis horizontal deviation angle detection tool and detection method thereof |
| CN106970156A (en) * | 2017-04-18 | 2017-07-21 | 南通友联数码技术开发有限公司 | A kind of ultrasonic low-angle probe K value, forward position method for rapidly testing |
| CN108431593A (en) * | 2015-12-24 | 2018-08-21 | 株式会社Posco | Crackle measuring device and method |
| CN108872386A (en) * | 2018-08-27 | 2018-11-23 | 上海同济检测技术有限公司 | Concrete strength ultrasound wave angle surveys the bearing calibration of method detection |
| CN109317854A (en) * | 2018-09-14 | 2019-02-12 | 中核核电运行管理有限公司 | Heavy water reactor spentnuclear fuel basket shroud RB-C2# welds comparison test block |
| CN110672725A (en) * | 2019-10-15 | 2020-01-10 | 宝鸡石油输送管有限公司 | Depth positioning test block and positioning method for weld defects of spiral submerged arc welded steel pipe |
| CN111239261A (en) * | 2019-11-29 | 2020-06-05 | 内蒙古北方重工业集团有限公司 | Method for measuring refraction angle of small-angle probe |
| CN115307959A (en) * | 2022-08-17 | 2022-11-08 | 北京卫星制造厂有限公司 | Drill bit, helical sampling unit, extraterrestrial object sampling drill |
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2010
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628835A (en) * | 2012-04-19 | 2012-08-08 | 迪皮埃复材构件（太仓）有限公司 | System and method for detecting bonding quality of wind power generation blade web plate |
| CN103217485B (en) * | 2013-03-27 | 2017-04-05 | 国家电网公司 | A kind of measurement test block of angle probe ultrasonic field sound pressure distribution |
| CN103207240A (en) * | 2013-03-27 | 2013-07-17 | 国家电网公司 | Angle probe ultrasonic field longitudinal sound pressure distribution measuring method |
| CN103217486A (en) * | 2013-03-27 | 2013-07-24 | 国家电网公司 | Angle probe ultrasonic field transverse sound pressure distribution measuring method |
| CN103217485A (en) * | 2013-03-27 | 2013-07-24 | 国家电网公司 | Angle probe ultrasonic field sound pressure distribution measuring test block |
| CN103207240B (en) * | 2013-03-27 | 2016-03-16 | 国家电网公司 | The measuring method of the longitudinal acoustic pressure distribution of a kind of angle probe ultrasonic field |
| CN103217486B (en) * | 2013-03-27 | 2017-02-01 | 国家电网公司 | Angle probe ultrasonic field transverse sound pressure distribution measuring method |
| CN104075645B (en) * | 2014-07-18 | 2017-05-31 | 攀枝花天誉工程检测有限公司 | Single-oblique probe sound beam axis horizontal deviation angle detection tool and detection method thereof |
| CN104075645A (en) * | 2014-07-18 | 2014-10-01 | 攀枝花天誉工程检测有限公司 | Single-oblique probe sound beam axis horizontal deviation angle detection tool and detection method thereof |
| CN108431593A (en) * | 2015-12-24 | 2018-08-21 | 株式会社Posco | Crackle measuring device and method |
| CN106970156A (en) * | 2017-04-18 | 2017-07-21 | 南通友联数码技术开发有限公司 | A kind of ultrasonic low-angle probe K value, forward position method for rapidly testing |
| CN108872386A (en) * | 2018-08-27 | 2018-11-23 | 上海同济检测技术有限公司 | Concrete strength ultrasound wave angle surveys the bearing calibration of method detection |
| CN108872386B (en) * | 2018-08-27 | 2021-06-29 | 上海同济检测技术有限公司 | Correction method for concrete strength ultrasonic angle measurement method detection |
| CN109317854A (en) * | 2018-09-14 | 2019-02-12 | 中核核电运行管理有限公司 | Heavy water reactor spentnuclear fuel basket shroud RB-C2# welds comparison test block |
| CN110672725A (en) * | 2019-10-15 | 2020-01-10 | 宝鸡石油输送管有限公司 | Depth positioning test block and positioning method for weld defects of spiral submerged arc welded steel pipe |
| CN111239261A (en) * | 2019-11-29 | 2020-06-05 | 内蒙古北方重工业集团有限公司 | Method for measuring refraction angle of small-angle probe |
| CN115307959A (en) * | 2022-08-17 | 2022-11-08 | 北京卫星制造厂有限公司 | Drill bit, helical sampling unit, extraterrestrial object sampling drill |
| CN115307959B (en) * | 2022-08-17 | 2024-11-05 | 北京卫星制造厂有限公司 | Drill bit, spiral sampling part and extraterrestrial celestial body sampling drilling tool |
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Application publication date: 20100901 |