CN104280460B - Ultrasonic water logging detection method of composite material - Google Patents
Ultrasonic water logging detection method of composite material Download PDFInfo
- Publication number
- CN104280460B CN104280460B CN201410605137.XA CN201410605137A CN104280460B CN 104280460 B CN104280460 B CN 104280460B CN 201410605137 A CN201410605137 A CN 201410605137A CN 104280460 B CN104280460 B CN 104280460B
- Authority
- CN
- China
- Prior art keywords
- pressure sensitive
- water logging
- sensitive adhesive
- adhesive tape
- detection method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses an ultrasonic water logging detection method of a composite material. The ultrasonic water logging detection method comprises the following steps: (1) wrapping a to-be-inspected material requiring waterproof treatment by using a pressure sensitive tape, pressing a joint in a pasting process so as to achieve a waterproof effect; (2) placing the to-be-inspected material wrapped with the pressure sensitive tape in an ultrasonic water logging detection system for detecting; and (3) after the water logging on the surface of the to-be-inspected material is removed, placing in the ultrasonic water logging detection system, and performing detection again by means of the testing process. The ultrasonic water logging detection method has the beneficial effects that the waterproof effect is achieved, the sound wave energy entering inside a material is not lost, the to-be-inspected material after being wrapped in a waterproof manner can be used in an ultrasonic water logging detection method like a conventional material, thus the detection sensitivity of the material is improved, and an operation method is simplified.
Description
Technical field
The present invention relates to a kind of ultrasonic detection method is and in particular to a kind of composite water logging ultrasonic detection method.
Background technology
Widely using with composite, as the ultrasonic inspection ensureing quality of materials, detection fault in material important means
Survey technology is essential.Composite improves sex chromosome mosaicism because of preparation technology, easily in material surface and be internally formed hole, fine fisssure
Stricture of vagina.In immersed ultrasonic test, material is directly placed in water, water can be caused to penetrate into material by the hole of material surface or micro-crack
Material.If surface pore is connected with internal void, enter material internal for water and provide passage, produce phase with internal organizational structure
Interaction, the mechanics of impact material, ermal physics and other intrinsic performance, seriously reduce its serviceability.
For avoiding material to be subject to water pollution, often contactless Air Coupling, electromagnetic coupled and laser coupled can be used instead, but often
All there is the limitation such as the big, weak output signal of acoustical energy losses in the mode of kind.Air Coupling mode is subject to Components Shape and acoustic impedance match shadow
Ring, acoustic energy is big in component surface loss, causes the problem that detection sensitivity is low.Electromagnetic acoustic detection technique is not also very ripe,
Have the shortcomings that conversion efficiency is low, weak output signal.Although said method can guarantee that material is not polluted by water, they are only to some
Material be suitable for, for the more complicated material of highly attenuating, structure, acoustic energy utilization rate low it is difficult to reach higher detection target.To
Make full use of water logging ultrasonic method impedance easily to mate, be coupled to that acoustic energy in component is big, detection sensitivity is high, operational approach is simple
Advantage, the isolating problem solving material and water is a bottleneck that must break through.
Content of the invention
The present invention solves the problems, such as that composite is not suitable for directly using water as couplant and carries out ultrasound detection, proposes a kind of multiple
Condensation material water logging ultrasonic detection method, the method had both reached waterproof effect, and did not lose the acoustic wave energy entering material internal.
The present invention is achieved like this, and a kind of composite water logging ultrasonic detection method is it is characterised in that method walks
Suddenly as follows:
(1) to needing the material to be checked making water-proofing treatment to be wrapped up with pressure sensitive adhesive tape；
(2) material to be checked being enclosed with pressure sensitive adhesive tape is put into water logging ultrasonic wave detecting system, detected；Detection process
For: ultrasonic wave detecting system put into by the material to be checked being enclosed with pressure sensitive adhesive tape, and pulse generator is to transducer transmitting ultrasound wave letter
Number, enter in material to be checked through aqueous medium, ultrasound wave reaches transducer in material bottom reflection tailing edge backtracking, then through transducing
The piezoelectricity transition effects of device pass pulse generator back, and all transmittings and receipt signal pass to digital oscilloscope by pulse generator
Shown and analyzed；
(3) put back to water logging ultrasonic wave detecting system, through above-mentioned testing process after the pressure sensitive adhesive tape removing material surface to be checked
Detect again.
Further, the ultrasonic wave detecting system in described step (2), mainly includes pulse generator, transducer, numeral
Oscillograph, clamping device and container；It is characterized in that: pulse generator connects changing in digital oscilloscope and a container respectively
Energy device, transducer is fixed on the water surface by clamping device.
Further, described pressure sensitive adhesive tape includes pressure sensitive adhesive tape matrix and pressure sensitive adhesive, as isolated material become sound wave with
The couplant of material is it is ensured that the acoustic wave energy being coupled in material is not greatly lowered it is ensured that immersed ultrasonic test method
Application to composite.
Further, described pressure sensitive adhesive tape is that pressure sensitive adhesive is applied to a kind of special glue make on plastic sheeting matrix
Band, is a kind of vacuum-packed technique.There are presser sensor adhesion characteristics, so that colloid object is remained
It is difficult to remove in material surface.Compared with normal transparent adhesive tape, this adhesive tape is insensitive to material surface dust, can be with material
Laminating does not closely produce bubble, and formation vacuum state is it is ensured that the efficiency of transmission of sound wave.
Further, the velocity of sound of described pressure sensitive adhesive tape is 1600m/s, and density is in 1.0g/cm3Near, therefore acoustic impedance is
0.16*106g/cm2, acoustic impedance 0.15*10 with water6g/cm2It is sufficiently close to.When two media acoustic impedance is more or less the same, its boundary
Sound wave in the face of vertical incidence is almost total transmissivity.Therefore, pressure sensitive adhesive tape can regard, in sound field, the material being similar to water as,
Obvious weakening effect is not produced to the sound wave being entered material by water.
Further, described pressure sensitive adhesive tape is wrapped up, and its process is by pressure sensitive adhesive tape from the beginning of the side of material, right
Tested material is wound around successively and is adhered closely to material upper and lower surface, pressed again with hard thing it is ensured that adhesive tape and material surface not
There is bubble, between adhesive tape, there is no fold.Adhesive tape junction carries out overlap processing, after wrapping up whole material, again to entirety
Edge sealing.
The beneficial effects of the present invention is: both reached waterproof effect, and do not lost the acoustic wave energy entering material internal, entered
Material to be checked after row waterproof parcel can be used in immersed ultrasonic test method as conventional material, improves material tests sensitive
Degree, simplifies operational approach.
Brief description
Fig. 1 is the immersed ultrasonic test system structure diagram of the present invention.
Fig. 2 is the pressure sensitive adhesive tape structural representation of the present invention.
Fig. 3 is present invention frequency spectrum design sketch in the detection system.
Wherein, 1 is pressure sensitive adhesive tape matrix, and 2 is pressure sensitive adhesive, and 3 is pulse generator, and 4 is transducer, and 5 is material to be checked, 6
For pressure sensitive adhesive tape, 7 is digital oscilloscope, and 8 is clamping device, and 9 is container.
Specific embodiment
Be case study on implementation of the present invention below, the example being given only for illustrating this method, rather than in order to limit this method
Scope.
Embodiment one, as shown in figure 1, multiple to needing the material carbon fiber toughened silicon carbide ceramic base to be checked making water-proofing treatment
Condensation material c/sic, is wrapped up with the pressure sensitive adhesive tape shown in Fig. 2.Note compressing seam crossing, really during pasting
Guarantor can block the passage of water entrance, to reach waterproof effect.Material surface smooth planar after stickup, does not have fold and gas
Bubble.
Testing process: the container that water logging ultrasonic wave detecting system fills water put into by the material to be checked 5 being enclosed with pressure sensitive adhesive tape 6
In 9, pulse generator 3 launches ultrasonic signal to 2.25mhz transducer 4, enters in material 5 to be checked through aqueous medium.Transducer
It is fixed on the water surface by clamping device 8.Ultrasound wave reaches transducer 4 in material 5 bottom reflection tailing edge backtracking, then through transducing
The piezoelectricity transition effects of device 4 pass pulse generator 3 back.All transmittings are passed to numeral with receipt signal by pulse generator 3 and are shown
Ripple device 7 is shown and is analyzed.
Put back to origin-location after the pressure sensitive adhesive tape removing material 5 surface to be checked, detect again through above-mentioned testing process.
C/sic ultrasonic echo signal information in the case of measurement obtains two kinds twice, the shadow to echo amplitude for the pressure sensitive adhesive tape
Ring as shown in table 1, the impact to echo frequency is as shown in Figure 3.
Table 1
| Do not tape | Pressing sensitive tape | |
| Once bottom wave amplitude/v | 1.04 | 1.06 |
| Secondary bottom wave amplitude/v | 0.41 | 0.52 |
The ultrasonic echo signal amplitude stability of two kinds of situations, dominant frequency components are consistent, and the presence of pressure sensitive adhesive tape is not to super
Acoustic signals produce significant interference effect.This invention ensure that ultrasound detection sensitivity in the case of blooming for the material is not sent out
Raw reduction.
The above is the preferred embodiments of this method, therefore what feature, principle etc. described in all scopes according to the present patent application was done
Equivalence changes or modification, are all included in the range of the present patent application.
Claims (5)
1. a kind of composite water logging ultrasonic detection method is it is characterised in that method and step is as follows:
(1) to needing the material to be checked making water-proofing treatment to be wrapped up with pressure sensitive adhesive tape；
(2) material to be checked being enclosed with pressure sensitive adhesive tape is put into water logging ultrasonic wave detecting system, detected；Detection process is:
Ultrasonic wave detecting system put into by the material to be checked being enclosed with pressure sensitive adhesive tape, and pulse generator launches ultrasonic signal to transducer,
Enter in material to be checked through aqueous medium, ultrasound wave reaches transducer in material bottom reflection tailing edge backtracking, then through transducer
Piezoelectricity transition effects pass pulse generator back, all transmittings are passed to digital oscilloscope with receipt signal by pulse generator and are entered
Row display and analysis；
(3) put back to water logging ultrasonic wave detecting system, through above-mentioned testing process again after the pressure sensitive adhesive tape removing material surface to be checked
Detection.
2. a kind of composite water logging ultrasonic detection method according to claim 1 it is characterised in that: described step
(2) ultrasonic wave detecting system in, mainly includes pulse generator, transducer, digital oscilloscope, clamping device and container；Arteries and veins
Rush the transducer that generator connects in digital oscilloscope and a container respectively, transducer is fixed on the water surface by clamping device.
3. a kind of composite water logging ultrasonic detection method according to claim 1 it is characterised in that: described pressure sensitive adhesive
Band includes pressure sensitive adhesive tape matrix and pressure sensitive adhesive, becomes the couplant of sound wave and composite as isolated material.
4. a kind of composite water logging ultrasonic detection method according to claim 1 or 3 it is characterised in that: described pressure
Sensitive tape is that pressure sensitive adhesive is applied to a kind of adhesive tape make on plastic sheeting matrix.
5. a kind of composite water logging ultrasonic detection method according to claim 1 it is characterised in that: described with pressure-sensitive
Adhesive tape is wrapped up, and its process is by pressure sensitive adhesive tape from the beginning of the side of material, tested material is wound around successively and closely pastes
In material upper and lower surface, with the pressing of hard thing, adhesive tape junction carries out overlap processing, after wrapping up whole material, again to whole
Body edge sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605137.XA CN104280460B (en) | 2014-11-03 | 2014-11-03 | Ultrasonic water logging detection method of composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605137.XA CN104280460B (en) | 2014-11-03 | 2014-11-03 | Ultrasonic water logging detection method of composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104280460A CN104280460A (en) | 2015-01-14 |
| CN104280460B true CN104280460B (en) | 2017-01-18 |
Family
ID=52255548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410605137.XA Active CN104280460B (en) | 2014-11-03 | 2014-11-03 | Ultrasonic water logging detection method of composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104280460B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784844B (en) * | 2016-03-03 | 2018-11-27 | 西安天力金属复合材料有限公司 | A kind of laminated-metal composite interface ultrasonic imaging detection device and method |
| CN114166938A (en) * | 2021-10-22 | 2022-03-11 | 安徽佳力奇先进复合材料科技股份公司 | Aramid paper honeycomb internal quality detection method |
| CN114166939A (en) * | 2021-11-02 | 2022-03-11 | 安徽佳力奇先进复合材料科技股份公司 | Method for detecting internal quality of composite material honeycomb sandwich structural member |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201110845Y (en) * | 2007-11-30 | 2008-09-03 | 舞阳钢铁有限责任公司 | Thick steel plate flaw detecting apparatus with aqueous film coupled impulse reflection method |
| CN201984057U (en) * | 2010-10-15 | 2011-09-21 | 钟世航 | Coupling device of sound-wave sensor installed on steel-bar object |
| CN203479752U (en) * | 2013-09-10 | 2014-03-12 | 河海大学 | Piezoelectric ceramic sensitive module and hydraulic concrete structure health monitoring testing platform |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0756480B2 (en) * | 1989-08-31 | 1995-06-14 | 日本碍子株式会社 | Water immersion type automatic ultrasonic flaw detector |
| JP4088384B2 (en) * | 1999-03-30 | 2008-05-21 | 三菱電機株式会社 | Ultrasonic flaw detector |
-
2014
- 2014-11-03 CN CN201410605137.XA patent/CN104280460B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201110845Y (en) * | 2007-11-30 | 2008-09-03 | 舞阳钢铁有限责任公司 | Thick steel plate flaw detecting apparatus with aqueous film coupled impulse reflection method |
| CN201984057U (en) * | 2010-10-15 | 2011-09-21 | 钟世航 | Coupling device of sound-wave sensor installed on steel-bar object |
| CN203479752U (en) * | 2013-09-10 | 2014-03-12 | 河海大学 | Piezoelectric ceramic sensitive module and hydraulic concrete structure health monitoring testing platform |
Non-Patent Citations (2)
| Title |
|---|
| 结构陶瓷声耦合方法研究;朱颖等;《第十届全国无损检测学术年会论文集》;20140504;第323-328页 * |
| 陶瓷及陶瓷基复合材料微缺陷的超声检测;梁青等;《材料工程》;20030430(第4期);第30-33页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104280460A (en) | 2015-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106287240B (en) | A kind of pipeline leakage testing device and single-sensor localization method based on sound emission | |
| CN105806270B (en) | A kind of detection method of material surface micro-crack depth | |
| CN103776903B (en) | A kind of wind electricity blade delamination detection method and detection system | |
| CN1865980B (en) | Ultrasonic detection method for near surface defect | |
| CN107085039A (en) | A kind of method for the Air Coupling ultrasound detection signal intensity for increasing composite | |
| WO2019033466A1 (en) | Piezoelectric array flexible sensor using feature guided waves for detecting weld seam defect, and detection method | |
| CN103969339A (en) | Nonlinear ultrasonic guided wave detection method and device for pipeline micro damage | |
| CN202256264U (en) | Sound emission device for detecting damage failure of carbon fiber composite material | |
| JP2016173336A (en) | Ultrasonic flaw detection system, ultrasonic flaw detection method and manufacturing method of aircraft component | |
| CN109781864A (en) | Signal de-noising and defect inspection method and flaw indication reconstructing method based on guided wave signals sparse decomposition method | |
| CN104280460B (en) | Ultrasonic water logging detection method of composite material | |
| CN104764803A (en) | Material stress detection technology based on changes of wavelength of supersonic waves | |
| CN108645727A (en) | Crack Damage quantitative detecting method based on piezoelectric excitation-optical fiber grating sensing | |
| CN104777224A (en) | Defect detecting method for junction surface of metal alloy | |
| CN108088913A (en) | For the piezoelectric supersonic guided wave probe of rail flange of rail flaw detection and its method of detection | |
| CN108318582B (en) | Signal acquisition method for ultrasonic reflection and transmission parallel detection of sandwich structure | |
| CN103604728B (en) | Based on the sand grain droplet measurement device and method of stream solid Interface Wave | |
| CN102323334A (en) | Energy factor based ultrasonic guided wave detection method of debonding defect of bonding structure | |
| CN205353013U (en) | Ultrasonic wave nondestructive detection system | |
| CN104316601A (en) | Mobile phone with floor internal defect detection function and working principle of mobile phone | |
| CN107064304A (en) | A kind of fruit structure the cannot-harm-detection device and method | |
| CN205353014U (en) | Ultrasonic wave work piece detecting system | |
| CN104749082A (en) | Ultrasonic multifunctional evaluation method and ultrasonic multifunctional evaluation device for void content | |
| CN210197015U (en) | Detection apparatus for pipeline under water | |
| CN107843653A (en) | A kind of internal loopback formula measuring method of double-frequency ultrasound transducer and higher hamonic wave |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |