CN103353449A - Air-jet method pressure-sensitive coating response time measuring system - Google Patents
Air-jet method pressure-sensitive coating response time measuring system Download PDFInfo
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- CN103353449A CN103353449A CN2013103009183A CN201310300918A CN103353449A CN 103353449 A CN103353449 A CN 103353449A CN 2013103009183 A CN2013103009183 A CN 2013103009183A CN 201310300918 A CN201310300918 A CN 201310300918A CN 103353449 A CN103353449 A CN 103353449A
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Abstract
The invention relates to an air-jet method pressure-sensitive coating response time measuring system, which includes an air-jet generation device, a test sample, a dynamic pressure sensor, a laser, a photomultiplier tube and a data collection system, wherein the air-jet generation device is formed by sequentially connecting an air source, a stop valve, a pressure reducing valve and a quick valve via air conduits. The test sample is arranged right ahead the quick valve of the air-jet generation device; a pressure-sensitive coating is sprayed on the surface of the test sample; the dynamic pressure sensor is embedded in the surface of the test sample. The laser and the photomultiplier tube are arranged on one side, facing the test sample, of the air-jet generation device. The quick valve of the air-jet generation device switches quickly to generate step type air jet stream which jets to the test sample. The photomultiplier tube and the dynamic pressure sensor output signals to the data collection system. The system is simple in structure and easy to erect, and can measure the response time of the to-be-measured pressure-sensitive coating without complex data processing procedure.
Description
Technical field
The present invention relates to pressure sensitive paint performance measurement technology, particularly relate to air-spray method pressure sensitive paint system for measuring responsive time.
Background technology
The Pressure-Sensitive Paint Technique advanced person's that to be the eighties in 20th century grow up based on the oxygen Quenching of light emitting molecule (active component in the pressure sensitive paint) pressure measurement technology is subject to exciting light source and excites the intensity of the fluorescence of launching or life-span to obtain air pressure by measuring light emitting molecule.The pressure sensitive paint technology has noncontact, little, the advantages such as spatial resolution is high, the test period is short, remarkable in economical benefits of stream field impact, at home and abroad has been subject to paying close attention to widely and using, and develops very rapid.
Pressure sensitive paint is the material carrier of Pressure-Sensitive Paint Technique, plays the effect of pressure transducer.The performance of pressure sensitive paint is directly connected to the precision of its scope of application and measurement data, and the specific performance index comprises absorption spectrum, emission spectrum, photodegradation rate, temperature control characteristic, pressure sensitivity characteristic, applicable temperature range, response time properties etc.
In the performance index of pressure sensitive paint, response time properties has determined rapidly response pressure variation of pressure sensitive paint, and applicable tonometric test type (steady pressure is measured and non-steady pressure is measured), be very important performance index of pressure sensitive paint.Owing to measure in the test in non-steady pressure, model surface exists fast even the pressure of high frequency changes, so need pressure sensitive paint to have the very short response time, could reproduce well the pressure change procedure, and the steady pressure measurement does not need pressure sensitive paint to have the characteristic of quick response.
Summary of the invention
The technical problem to be solved in the present invention is that it is simple to provide a kind of system to consist of, and builds easily, measures the air-spray method pressure sensitive paint system for measuring responsive time that need not complicated data handling procedure.
The technical scheme that adopts is:
Air-spray method pressure sensitive paint system for measuring responsive time, comprise the air-spray generating means, be used for the spraying pressure sensitive paint the test print, be embedded in test print surface, be used for dynamic pressure transducer, the laser instrument that is used for exciting the pressure sensitive paint emitting fluorescence, the photomultiplier that is used for gathering pressure sensitive paint emitting fluorescence signal that monitoring test print surface pressing changes, the data acquisition system (DAS) that is used for gathering dynamic pressure transducer and photomultiplier output signal.Described air-spray generating means connects successively stop valve, reduction valve and quick valve by air-source by gas piping and forms.Described test print is arranged on the quick valve dead ahead of air-spray generating means, and test print surface spraying has pressure sensitive paint, and dynamic pressure transducer is embedded in test print surface.In the face of the test print arranges laser instrument and photomultiplier in air-spray generating means one side, the laser prolonged exposure test print of laser instrument emission.The quick valve of described air-spray generating means is tested print by the staged air-spray directive that quick break-make produces.Described photomultiplier and dynamic pressure transducer export signal to data acquisition system (DAS).
The measurement of air-spray method pressure sensitive paint response time, the step that comprises is as follows:
Step 1, cleaner assay print surface sprays tested pressure sensitive paint and dries, and treats dynamic pressure transducer to be imbedded after the paint solidification measured hole on test print surface;
Step 4 is opened stop valve, regulates reduction valve to the output pressure of setting, and opens quick valve, produces the staged air-spray, and the test print is subject to air-spray and impacts, and surface pressing produces staged to be changed;
Principle of work of the present invention
The continous way LASER Light Source excites pressure sensitive paint to launch fluorescence to carrying out prolonged exposure near the position of burying dynamic pressure transducer underground on the test print; The air-spray that the staged of utilizing the air-spray generating means to produce changes is subject to light source irradiation on test print surface position produces stepped pressure variation; Photomultiplier detects the pressure sensitive paint photoluminescence intensity in real time; By analyzing dynamic pressure transducer that data acquisition system (DAS) receives and the measurement data of photomultiplier, obtain the response time of pressure sensitive paint, the response time of tested pressure sensitive paint is that dynamic pressure transducer detects pressure and begins to occur the moment that staged changes, and the fluorescence intensity that gathers to photomultiplier changes the time between moment of 90%.
Advantage of the present invention is:
1 system consists of simple, builds easily;
2 measuring principles are simple, need not the response time that complicated data handling procedure can be determined tested pressure sensitive paint.
Description of drawings
Fig. 1 is pressure sensitive paint system for measuring responsive time synoptic diagram of the present invention.
Embodiment
Air-spray method pressure sensitive paint system for measuring responsive time, comprise the air-spray generating means, be used for the spraying pressure sensitive paint test print 5, be embedded in test print surface, be used for dynamic pressure transducer 6, the laser instrument 7 that is used for exciting the pressure sensitive paint emitting fluorescence, the photomultiplier 8 that is used for gathering pressure sensitive paint emitting fluorescence signal that monitoring test print 5 surface pressings change, the data acquisition system (DAS) 9 that is used for gathering dynamic pressure transducer and photomultiplier output signal.Described air-spray generating means connects successively stop valve 2, reduction valve 3 and quick valve 4 by air-source 1 by gas piping and forms.Described test print 5 is arranged on quick valve 4 dead aheads of air-spray generating means, and test print 5 surface sprayings have pressure sensitive paint, and dynamic pressure transducer 6 is embedded in test print 5 surfaces.In the face of test print 5 arranges laser instrument 7 and photomultiplier 8 in air-spray generating means one side, the laser prolonged exposure test print 5 of laser instrument 7 emissions.The quick valve 4 of described air-spray generating means is tested print 5 by the staged air-spray directive that quick break-make produces.Described photomultiplier 8 and dynamic pressure transducer 6 export signal to data acquisition system (DAS) 9.
The measurement of air-spray method pressure sensitive paint response time, the step that comprises is as follows:
1, before the test, cleaner assay print 5 surfaces spray tested pressure sensitive paint and dry, and treat dynamic pressure transducer 6 to be imbedded after the paint solidification measured hole on test print surface;
2, will test print 5 and be fixed on quick valve 4 the place aheads, and will cover have pressure sensitive paint one facing to the quick valve air stream outlet, open laser instrument 7, adjust the position of laser instrument, make Ear Mucosa Treated by He Ne Laser Irradiation on the test print and facula position as far as possible near pick-up hole;
3, open photomultiplier 8, with the light-sensitive surface alignment test print 5 of photomultiplier by the zone of Ear Mucosa Treated by He Ne Laser Irradiation;
4, open stop valve 2, regulate reduction valve 3 to the output pressure of setting, open quick valve 4, produce the staged air-spray, the test print is subject to air-spray and impacts, and surface pressing produces staged to be changed;
5, receive the data of dynamic pressure transducer 6 and photomultiplier 8 with data acquisition system (DAS) 9, analyze the data of dynamic pressure transducer 6 and photomultiplier 8, determine the response time of tested pressure sensitive paint.The response time of tested pressure sensitive paint is that dynamic pressure transducer detects pressure and begins to occur the moment that staged changes, and the fluorescence intensity that gathers to photomultiplier changes the time between moment of 90%.Described formation air-spray method pressure sensitive paint system for measuring responsive time.
Claims (2)
1. air-spray method pressure sensitive paint system for measuring responsive time, comprise the air-spray generating means, the test print (5) that is used for the spraying pressure sensitive paint, be embedded in test print surface, be used for the dynamic pressure transducer (6) that monitoring test print surface pressing changes, be used for exciting the laser instrument (7) of pressure sensitive paint emitting fluorescence, be used for gathering the photomultiplier (8) of pressure sensitive paint emitting fluorescence signal, be used for gathering the data acquisition system (DAS) (9) of dynamic pressure transducer and photomultiplier output signal, it is characterized in that described air-spray generating means connects stop valve (2) by air-source (1) successively by gas piping, reduction valve (3) and quick valve (4) form, described test print (5) is arranged on quick valve (4) dead ahead of air-spray generating means, test print (5) surface spraying has pressure sensitive paint, dynamic pressure transducer (6) is embedded in test print (5) surface, in the face of test print (5) arranges laser instrument (7) and photomultiplier (8) in air-spray generating means one side, the laser prolonged exposure test print (5) of laser instrument (7) emission, the quick valve of described air-spray generating means (4), by the staged air-spray directive test print (5) that quick break-make produces, described photomultiplier (8) and dynamic pressure transducer (6) export signal to data acquisition system (DAS) (9).
2. the measurement of air-spray method pressure sensitive paint response time is characterized in that the step that comprises is as follows:
Step 1, before the test, cleaner assay print (5) surface sprays tested pressure sensitive paint and dries, and treats dynamic pressure transducer (6) to be imbedded after the paint solidification measured hole on test print surface;
Step 2, to test print (5) and be fixed on quick valve (4) the place ahead, and will cover have pressure sensitive paint one facing to the quick valve air stream outlet, open laser instrument (7), adjust the position of laser instrument, make Ear Mucosa Treated by He Ne Laser Irradiation test on the print and facula position depended on pressure measured hole;
Step 3 is opened photomultiplier (8), with the light-sensitive surface alignment test print (5) of photomultiplier by the zone of Ear Mucosa Treated by He Ne Laser Irradiation;
Step 4 is opened stop valve (2), regulates reduction valve (3) to the output pressure of setting, and opens quick valve (4), produces the staged air-spray, and the test print is subject to air-spray and impacts, and surface pressing produces staged to be changed;
Step 5 with the data of data acquisition system (DAS) (9) reception dynamic pressure transducer (6) and photomultiplier (8), is analyzed the data of dynamic pressure transducer (6) and photomultiplier (8), determines the response time of tested pressure sensitive paint.
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| CN2013103009183A CN103353449A (en) | 2013-07-17 | 2013-07-17 | Air-jet method pressure-sensitive coating response time measuring system |
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| CN2013103009183A CN103353449A (en) | 2013-07-17 | 2013-07-17 | Air-jet method pressure-sensitive coating response time measuring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580092A (en) * | 2018-11-20 | 2019-04-05 | 中国航天空气动力技术研究院 | A kind of quick response pressure sensitive paint dynamic calibration apparatus and scaling method |
| CN110879218A (en) * | 2019-11-15 | 2020-03-13 | 中国船舶工业系统工程研究院 | Underwater thermal jet buoyancy lift measuring device |
| CN111157496A (en) * | 2019-12-26 | 2020-05-15 | 中国空气动力研究与发展中心低速空气动力研究所 | Pressure-sensitive paint sample wafer test system of PSP dynamic calibration device |
| CN114739626A (en) * | 2022-06-13 | 2022-07-12 | 中国空气动力研究与发展中心高速空气动力研究所 | Rotating blade grid pressure measurement test method based on quick response pressure-sensitive paint |
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| JP2009092615A (en) * | 2007-10-12 | 2009-04-30 | Japan Aerospace Exploration Agency | Pressure sensitive paint thin film sensor of three-layer structure |
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| CN102564694A (en) * | 2010-12-27 | 2012-07-11 | 中国航空工业第一集团公司沈阳空气动力研究所 | Device for measuring response time of pressure-sensitive paint on pressure change |
| CN203502349U (en) * | 2013-07-17 | 2014-03-26 | 中国航空工业集团公司沈阳空气动力研究所 | Air-spray process pressure-sensitive paint response time measuring system |
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2013
- 2013-07-17 CN CN2013103009183A patent/CN103353449A/en active Pending
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| JP2009092615A (en) * | 2007-10-12 | 2009-04-30 | Japan Aerospace Exploration Agency | Pressure sensitive paint thin film sensor of three-layer structure |
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| CN102564694A (en) * | 2010-12-27 | 2012-07-11 | 中国航空工业第一集团公司沈阳空气动力研究所 | Device for measuring response time of pressure-sensitive paint on pressure change |
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| ALAN E.BARON ET AL.: "Submillisecond response times of oxygen‐quenched luminescent coatings", 《REV.SCI.INSTRUM.》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580092A (en) * | 2018-11-20 | 2019-04-05 | 中国航天空气动力技术研究院 | A kind of quick response pressure sensitive paint dynamic calibration apparatus and scaling method |
| CN110879218A (en) * | 2019-11-15 | 2020-03-13 | 中国船舶工业系统工程研究院 | Underwater thermal jet buoyancy lift measuring device |
| CN111157496A (en) * | 2019-12-26 | 2020-05-15 | 中国空气动力研究与发展中心低速空气动力研究所 | Pressure-sensitive paint sample wafer test system of PSP dynamic calibration device |
| CN114739626A (en) * | 2022-06-13 | 2022-07-12 | 中国空气动力研究与发展中心高速空气动力研究所 | Rotating blade grid pressure measurement test method based on quick response pressure-sensitive paint |
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Application publication date: 20131016 |