CN103267806A - Ultrasonic phased array nondestructive testing method for shafts of recreation facilities - Google Patents
Ultrasonic phased array nondestructive testing method for shafts of recreation facilities Download PDFInfo
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- CN103267806A CN103267806A CN2013101522216A CN201310152221A CN103267806A CN 103267806 A CN103267806 A CN 103267806A CN 2013101522216 A CN2013101522216 A CN 2013101522216A CN 201310152221 A CN201310152221 A CN 201310152221A CN 103267806 A CN103267806 A CN 103267806A
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Abstract
The invention discloses an ultrasonic phased array nondestructive testing method for shafts of recreation facilities. According to the method, an OmniScan MX instrument is used, a sector scanning angle is set to be less than or equal to 30 DEG, and a linear probe with frequency of 2 MHz and less than or equal to 256 wafers is selected and used for detection from two end faces of a shaft member. The shaft member is divided into corresponding different detection areas along a length direction according to the position of the phased array probe on the end faces of the shaft member and the range of the scanning angle, and the probe is utilized for scanning the areas one by one. Through selection and usage of only one linear probe and utilization of ultrasonic phased array technology, nondestructive testing of shafts with different shapes and sizes can be realized, detection efficiency is improved, the problems that probes of different models are needed for detection of different shafts and different shaft reference blocks have to be arranged for contrast test in traditional ultrasonic testing of shafts are overcome, and investment in manpower and material resources can be substantially reduced.
Description
Technical field
The present invention relates to recreation facility axle class ultrasonic phase array lossless detection method, belong to Dynamic Non-Destruction Measurement.
Background technology
All be rotate-stationary mode such as recreation facilities such as ferris wheels, main shaft is main stressed member, and the situations such as producing fatigue damage and wearing and tearing that work long hours are inevitable.Grasp the newly-increased defect situation in main shaft surface, whether can safe operation most important for judging recreation facility, and if that recreation facility is dismantled the expense that detects main shaft is very high, so the method that the main shaft of recreation facility is not good detects up to now.
At present, domestic research to the Non-Destructive Testing of axle class mainly concentrates on the detection range that railway systems are carried out axletree, and to be the low-angle angle probe detect from two end faces of axle the main method of employing.At recreation facility axle class detection range, also there is the researchist to use for reference the method for railway systems, adopt the low-angle angle probe to detect from end face.But the axletree of railway is single geomery, that is to say by a large amount of experimental studies, and can adopting fixedly, the small angle longitudinal wave angle probe of model detects.And the model of recreation facility is varied, main shaft shape, size on the distinct device are all inequality, this have the probe of a large amount of different models when just needing to detect, and processes the test blocks of various axle class and compare test, and this certainly will increase man power and material's input greatly.
Conventional ultrasonic wave angle probe structure is placed in wafer on the voussoir as shown in Figure 1, thereby makes incident angle α reach certain specific value (this value can not change, can corresponding to the K value of ultrasonic probe).The forward position is that the angle probe launching site is apart from the distance (occurrence of each probe is different, determines by making, but can control within the specific limits) of probe front.The β angle is that ultrasound wave enters the refraction angle that produces behind the object under test, object under test one timing, and the β angle is determined by the α angle, so when using ultrasonic technology to carry out Non-Destructive Testing, need according to different detection contents (determinand), select different probes.Detecting with the axle class is example, probe placement is at the end face of axle, the ultrasound wave of emission needs to get to the side surface of axle behind superrefraction, every side end face need cover half length of a part during detection, this is just closely related with the geomery of axle: during detection in order to cover half length of axle part, little for the elongated employed probe incident angle of axle, incident angle is little then can't to be detected apart from the nearer zone of end face, suitably increase the incident angle of probe again, this just need according to circumstances select suitable probe, even need select a plurality of probes to satisfy sometimes and detect requirement.In addition, for guaranteeing the correctness of testing result, supersonic reflectoscope needs the various test blocks of irregular use to compare test.
Ultrasonic phase array is the emerging Dynamic Non-Destruction Measurement that developed in recent years.Be characterized in popping one's head in and form array by a plurality of separate piezoelectric chips, can independently control the time-delay that excites of each wafer, realize the deflection (being that incident angle can change) of acoustic beam, thereby realize that mobile probe but can not detect in the certain angle scope.Scanning process and conventional ultrasonic wave detect and compare: ultrasonic phased array technology ultrasound wave emission angle can deflection, the position correspondence that can detect also be certain limit, separated regions detects during detection; It is certain that conventional ultrasonic wave detects each ultrasound wave emission angle, and the position that can detect also is a bit of correspondence, needs ceaselessly mobile probe during detection.For detection of the same area, the conventional ultrasonic wave detector need detect the regular hour, and ultrasonic phased array technology is several just can be finished down and use.Therefore, at many places check occasion phased-array technique special advantages is arranged.
The present invention has carried out test experience research by ultrasonic phased array technology to axle class test specimen, has proposed the suitable phased array probe type of axle class and the method for detection of detecting.
Summary of the invention
The object of the invention provides recreation facility axle class ultrasonic phase array lossless detection method, improves detection efficiency, and this method is easy to learn, has the advantage of only using a kind of probe just can detect disalignment part all surfaces zone.
The present invention is realized by following technical proposals:
A kind of recreation facility axle class ultrasonic phase array lossless detection method, it is characterized in that, use OmniScan MX instrument, the sector scan angle that arranges is smaller or equal to 30 degree, and selecting the frequency that wherein is equipped with for use is detecting smaller or equal to the linear probe of 256 wafers two end faces from axle spare of 2MHz.
According to the scope of phased array probe at position and the scanning angle of axle spare end face, can be divided into corresponding different surveyed areas to axle spare at length direction, use selected probe to look into and sweep in the zone one by one.
According to testing result precision needs and requirement detection time, arrange and only open 32,64,128 wafers.
In order to improve the detection resolving power of little defective, the scanning angle of setting is smaller or equal to 30 degree, i.e. incident angle, and incident angle is too big, is unfavorable for the reception of reflection wave; The incident angle scope is too little, and the scope of each scanning is too little, and efficient is too low.According to the scope of phased array probe at position and the scanning angle of axle spare end face, can be divided into corresponding different surveyed areas to axle spare at length direction, use selected probe to look into and sweep in the zone one by one.
OmniScan MX instrument, it is weld seam detection that the typical case of this equipment uses, the depth direction that detects is not too large, the scanning angle that arranges is generally bigger, the scanning angle character of clear and definite OmniScan is 30 to 70 degree in its operation manual, and the present invention has developed the low-angle application of instrument, even equipment has obtained sufficient application, has solved the detection of axle class test specimen simultaneously.This instrument application is detected in the axle class, improve the detection resolving power of little defective.
Advantage of the present invention is by only selecting a kind of linear probe for use, use ultrasonic phased array technology, can carry out Non-Destructive Testing to the axle class of difformity and size, use the method for operating of OmniScan MX explanation, improved detection efficiency, solved and detected different axles in the ultrasound examination of axle quasi-tradition and need the probe of different model, and be equipped with the problem that different axle class reference blocks compares test, significantly reduced man power and material's input.
Description of drawings
Fig. 1: ultrasound wave angle probe structure;
Fig. 2: the relative position (vertical view) of probe and axle part;
Fig. 3: when opening 32 wafers, detect apart from the result of end face 510mm place defective;
Fig. 4: when opening 128 wafers, detect apart from the result of end face 351mm place defective;
Fig. 5: when opening 64 wafers, detect apart from the result of end face 151mm place defective;
Fig. 6: when opening 256 wafers, detect apart from the result of end face 10mm place defective.
Embodiment
The OmniScan MX instrument that adopts Olympus NDT company to produce, but do not limit manufacturer.
Example 1
Selected frequency is the linear probe of 32 wafers of unlatching of 2MHz, and the detection diameter is 200mm, and length is the axle of 1000mm, detects from two end faces of axle spare, and the sector scan angle of setting is the 5-15 degree, and every side need cover the long scope of a part 500mm.When beginning to detect, the relative position of probe and axle part as shown in Figure 2, with the end face edge optional position of probe placement at axle spare, outer surface with the direction aiming axis spare of ultrasound wave angle probe ultrasound wave incident, rather than axle center, 5mm is the forward position length of this probe, along the circumference mobile probe, detects apart from the nearer axle surface imperfection of end face; To pop one's head in then moves a certain distance to the axle center, along the circumference mobile probe, continues to detect apart from end face axle surface imperfection far away slightly; Repeating above operation can cover apart from the long axle surface of end face 500mm until sensing range.Find apart from axle one end 510mm(apart from other end 490mm) locate to exist defective, instrument shows the result as shown in Figure 3.
Example 2
Selected frequency is the linear probe of 128 wafers of unlatching of 2MHz, and the detection diameter is 150mm, and length is the axle of 800mm, detects from two end faces of axle spare, and the sector scan angle of setting is the 10-20 degree, and every side need cover the long scope of a part 400mm.When beginning to detect, probe placement, detects apart from the nearer axle surface imperfection of end face along the circumference mobile probe in axle spare end face edge; To pop one's head in then moves a certain distance to the axle center, along the circumference mobile probe, continues to detect apart from end face axle surface imperfection far away slightly; Repeating above operation can cover apart from the long axle surface of end face 400mm until sensing range.Find to have defective apart from axle one end 351mm place, instrument shows the result as shown in Figure 4.
Example 3
Selected frequency is the linear probe of 64 wafers of unlatching of 2MHz, and the detection diameter is 100mm, and length is the axle of 500mm, detects from two end faces of axle spare, and the sector scan angle of setting is the 10-25 degree, and every side need cover the long scope of a part 250mm.When beginning to detect, probe placement, detects apart from the nearer axle surface imperfection of end face along the circumference mobile probe in axle spare end face edge; To pop one's head in then moves a certain distance to the axle center, along the circumference mobile probe, continues to detect apart from end face axle surface imperfection far away slightly; Repeating above operation can cover apart from the long axle surface of end face 250mm until sensing range.Find to have defective apart from axle one end 151mm place, instrument shows the result as shown in Figure 5.
Example 4
Selected frequency is the linear probe of 256 wafers of unlatching of 2MHz, and the detection diameter is 50mm, and length is the axle of 200mm, detects from two end faces of axle spare, and the sector scan angle of setting is the 20-30 degree, and every side need cover the long scope of a part 100mm.When beginning to detect, probe placement, detects apart from the nearer axle surface imperfection of end face along the circumference mobile probe in axle spare end face edge; To pop one's head in then moves a certain distance to the axle center, along the circumference mobile probe, continues to detect apart from end face axle surface imperfection far away slightly; Repeating above operation can cover apart from the long axle surface of end face 100mm until sensing range.Find to have defective apart from axle one end 10mm place, instrument shows the result as shown in Figure 6.
Open and the recreation facility axle class ultrasonic phase array lossless detection method that proposes of the present invention, those skilled in the art can be by using for reference this paper content, and links such as appropriate change parameter realize.Recreation facility axle class ultrasonic phase array lossless detection method of the present invention is described by preferred embodiment, person skilled obviously can be changed or suitably change and combination content as herein described in not breaking away from content of the present invention, spirit and scope, realizes the technology of the present invention.Special needs to be pointed out is, the replacement that all are similar and change apparent to those skilled in the artly, they are regarded as being included in spirit of the present invention, scope and the content.
Claims (5)
1. recreation facility axle class ultrasonic phase array lossless detection method, it is characterized in that use OmniScan MX instrument, the sector scan angle of setting is smaller or equal to 30 degree, selected frequency is the linear probe smaller or equal to 256 wafers of 2MHz, detects from two end faces of axle spare.
2. the method for claim 1 is characterized in that arranging unlatching 32,64 or 128 wafers.
3. the method for claim 1 is characterized in that according to the scope of phased array probe at position and the scanning angle of axle spare end face, and the axle part is divided into corresponding different surveyed areas at length direction, uses selected probe to look into and sweep in the zone one by one.
4. the method for claim 1 is characterized in that described OmniScan MX instrument is that Olympus NDT company produces.
5. the method for claim 1 only is characterized in that using ultrasonic phased array technology with a kind of linear probe, finishes the axle class of difformity and size is carried out Non-Destructive Testing.
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| CN2013101522216A CN103267806A (en) | 2013-04-27 | 2013-04-27 | Ultrasonic phased array nondestructive testing method for shafts of recreation facilities |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535663A (en) * | 2014-11-11 | 2015-04-22 | 中国民航大学 | An ultrasonic phased array nondestructive test method based on fractal |
| CN107907594A (en) * | 2017-12-21 | 2018-04-13 | 爱德森（厦门）电子有限公司 | A kind of coupling process of in-service wind power principal axis low-angle ultrasonic monitoring sensor |
| CN110967404A (en) * | 2019-11-25 | 2020-04-07 | 苏州热工研究院有限公司 | Nuclear power station conventional island shaft class forge piece phased array ultrasonic detection system and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101103266A (en) * | 2005-01-21 | 2008-01-09 | 弗劳尔科技公司 | Ultrasound phased array devices and methods for use with stainless steel |
| CN101571511A (en) * | 2008-04-30 | 2009-11-04 | 硕德（北京）科技有限公司 | Axial parallel beam synthesis phased array ultrasonic inspection and measurement |
| CN102866203A (en) * | 2012-10-12 | 2013-01-09 | 成都主导科技有限责任公司 | Phase array ultrasonic detecting device and method for solid axle |
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2013
- 2013-04-27 CN CN2013101522216A patent/CN103267806A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101103266A (en) * | 2005-01-21 | 2008-01-09 | 弗劳尔科技公司 | Ultrasound phased array devices and methods for use with stainless steel |
| CN101571511A (en) * | 2008-04-30 | 2009-11-04 | 硕德（北京）科技有限公司 | Axial parallel beam synthesis phased array ultrasonic inspection and measurement |
| CN102866203A (en) * | 2012-10-12 | 2013-01-09 | 成都主导科技有限责任公司 | Phase array ultrasonic detecting device and method for solid axle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535663A (en) * | 2014-11-11 | 2015-04-22 | 中国民航大学 | An ultrasonic phased array nondestructive test method based on fractal |
| CN104535663B (en) * | 2014-11-11 | 2017-07-28 | 中国民航大学 | A kind of ultrasonic phase array lossless detection method based on point shape |
| CN107907594A (en) * | 2017-12-21 | 2018-04-13 | 爱德森（厦门）电子有限公司 | A kind of coupling process of in-service wind power principal axis low-angle ultrasonic monitoring sensor |
| CN110967404A (en) * | 2019-11-25 | 2020-04-07 | 苏州热工研究院有限公司 | Nuclear power station conventional island shaft class forge piece phased array ultrasonic detection system and detection method |
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Application publication date: 20130828 |