CN206563728U - A kind of multidirectional controllable male part detects the device of surface of solids defect - Google Patents

A kind of multidirectional controllable male part detects the device of surface of solids defect Download PDF

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Publication number
CN206563728U
CN206563728U CN201720102108.0U CN201720102108U CN206563728U CN 206563728 U CN206563728 U CN 206563728U CN 201720102108 U CN201720102108 U CN 201720102108U CN 206563728 U CN206563728 U CN 206563728U
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transducer array
transmitting
linear transducer
receiving
detection
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韦岗
肖敬轩
杨萃
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South China University of Technology SCUT
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South China University of Technology SCUT
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Abstract

The utility model provides the device that a kind of multidirectional controllable male part detects surface of solids defect, signal generating unit, multidirectional controllable male part, transmitting-receiving linear transducer array and signal processing unit including generating ultrasonic signal, multidirectional controllable male part, which is located at, during detection is detected between solid and transmitting-receiving linear transducer array, signal generating unit is connected with receiving and dispatching the ultrasound emission probe of linear transducer array, and signal processing unit is connected with receiving and dispatching the ultrasonic reception probe of linear transducer array;Multidirectional controllable male part can be moved in checking process and deformation enables transmitting-receiving linear transducer array to be rotated in detection plane, multidirectional controllable male part can also make transmitting-receiving linear transducer array step up movement in the side perpendicular to detection plane by flexible, the transmitting-receiving of supersonic sounding data is realized through the coupling layer of different-thickness, so as to realize the detection that the detection of surface of solids defect is changed into internal flaw, the echo-signal that transmitting-receiving linear transducer array is received carries out feature extraction, defect recognition by signal processing unit and provides testing result.

Description

A kind of multidirectional controllable male part detects the device of surface of solids defect
Technical field
The utility model and ultrasonic detecting technology field, especially relate to a kind of multidirectional controllable male part detection surface of solids defect Device.
Background technology
Under the background that modern industry is developed rapidly, since 21st century, modern industry is towards high-precision And the direction of point is developed, in various industry such as large-sized solid workpiece, Industrial Metal platy structure, spacecraft forging, high-rise steel towers In the maintenance of structure, ultrasonic detecting technology just plays extremely important role wherein, and Ultrasonic NDT has sensitivity It is high, penetration power is strong, directive property is good, detection speed is fast, cost is low, equipment is relatively easy, it is harmless the advantages of.Ultrasonic wave enters When entering interior of articles and running into defect, a part of sound wave can produce reflection, and receiver can be analyzed the back wave that probe is received, Defect just can be accurately measured, and position and the size of internal flaw can be shown, material thickness etc. is determined.Ultrasound detection is made For the nondestructiving detecting means being most widely used, it detects examined object using ultrasonic wave propagation in media as well and attenuation characteristic It whether there is the situation of defect inside part, the development to modern industry has great significance.
But when defect or crackle are located at the surface of solids or near surface, because the pulse of compressional wave is anti-in transonic process Penetrate and there is blind area, and defect is orientated the influence to detection sensitivity, and because the acoustic pressure near field region has very big fluctuating to deposit In near-field effect, some defects in positioned at surface and closely surface or near field region are often difficult to detection, now typically Use and be disadvantageous in that in Magnetic testing or Liquid penetrant testing, existing surface of solids defect detecting device:First, magnetic is examined Survey is not suitable for nonmagnetic substance, and the coating of the surface of solids can reduce detection woods sensitivity;2nd, Magnetic testing is not suitable for detection Bearing of trend is less than 20 ° of defect with magnetic line of force angular separation;3rd, surface smoothness requirements of the Magnetic testing to detected member Height, the small detection speed of detection range is slow;4th, Liquid penetrant testing is difficult to detect porous material, is not suitable for checking that foeign element is caused Defect, and be difficult to quantitative control detection operation quality;5th, the detection means such as magnetic, infiltration is by the condition element shadow such as environment Sound is larger;Thus, design a kind of multidirectional controllable male part and the surface of solids is detected to the ultrasound detection for being converted to solid interior detection Device.
Utility model content
The utility model aims to overcome that the accommodation of existing surface of solids defect detecting technique is narrow, to defect Regular shape requires, detects and is difficult to the shortcomings of accurate qualitative and ultrasound detection can not directly detect surface of solids defect, carries The device of surface of solids defect is detected for a kind of multidirectional controllable male part, the surface of solids is detected and is converted to solid interior detection Ultrasound detection, and the device it is portable and be adapted to it is various under the conditions of the surface of solids detection.
A kind of multidirectional controllable male part detects the device of surface of solids defect, and its signal for including generating ultrasonic signal occurs Unit, multidirectional controllable male part, transmitting-receiving linear transducer array and signal processing unit, multidirectional controllable male part, which is located at, during detection is detected Between solid and transmitting-receiving linear transducer array, signal generating unit is connected with receiving and dispatching the ultrasound emission probe of linear transducer array, signal transacting Unit is connected with receiving and dispatching the ultrasonic reception probe of linear transducer array;Multidirectional controllable male part can be moved in checking process and deformation makes Linear transducer array, which must be received and dispatched, to be rotated in detection plane, and multidirectional controllable male part can also make transmitting-receiving linear transducer array hang down by flexible Movement directly is stepped up in the side of detection plane, the transmitting-receiving of supersonic sounding data is realized through the coupling layer of different-thickness, so that The detection that the detection of surface of solids defect is changed into internal flaw is realized, the echo-signal that transmitting-receiving linear transducer array is received is by signal Processing unit carries out feature extraction, defect recognition and provides testing result.
Further, the multidirectional controllable male part independently of transmitting-receiving linear transducer array with solid to be measured, it is necessary to be detected When, multidirectional controllable male part is positioned over the effect that couplant is served as between transmitting-receiving linear transducer array and solid to be measured.
Further, the transmitting-receiving linear transducer array is including centrally located ultrasound emission probe and around ultrasound emission probe Multiple ultrasonic receptions probe of arrangement.
Described transmitting-receiving linear transducer array, centrally located is ultrasound emission probe, multiple around ultrasound emission Probe arrangement Ultrasonic reception is popped one's head in, and forms the transmitting-receiving linear transducer array of " being received single-shot " more.So that receiving signal more comprehensively has more completeness, compared with " MIMO " needs repeatedly deflection and focusing operation, and described transmitting-receiving linear transducer array only needs the transmitting and reception of few number of times, The specifying information of defect can be obtained, passes through the qualitative analysis for realizing defect of signal transacting.
Described multidirectional controllable male part, it is multidirectional independently of transmitting-receiving linear transducer array and solid to be measured, it is necessary to when being detected Controllable male part is positioned between transmitting-receiving linear transducer array and solid to be measured the effect of couplant of serving as, for exclude transmitting-receiving probe with Air between solid to be measured, makes ultrasonic wave energy effectively reach the surface of solids to be measured, and increase by the controllable male part The distance of transmitting-receiving linear transducer array and the surface of solids to be measured so that surface of solids defect be transformed into solid to be measured with it is controllable Male part internal flaw, to reach the purpose of ultrasound detection.Multidirectional controllable male part is made by the good and soft material of sound transparency, Suitable material is selected according to applicable cases, when using in slippery solids material surface, the couplant of low viscosity can be used; When using in coarse solids surface, vertical surface and top surface, the couplant that viscosity should be used high;High-temp solid should be selected resistance to High-temperature coupling agent.
Multidirectional deformation be able to can occur in detection process for described multidirectional controllable male part, meet transmitting-receiving linear transducer array as schemed The stepping for rotating, stretching of 4 plane and Plane Rotation and flexible stepping meet from each different angle and are converted to The ultrasound detection of known depth, forms comprehensive, multi-angle Detection results.
Described signal generating unit generation linear FM signal, sets the parameters such as frequency, amplitude to meet described device Ultrasonic signal configuration condition.
Described signal processing unit carries out noise reduction process, feature extraction and signal analysis to the echo-signal received Obtain required echo-signal parameter.
The utility model has the following advantages and effect relative to prior art:
1. apparatus structure described in the utility model is simple, with portability, it is adapted to various materials, will not be non-because of material Magnetic and Detection results failure, application are wider.
2. device detection direction described in the utility model and the no requirement (NR) of magnetic line of force angular separation, realize comprehensive, multi-angle The surface of solids detection.
3. device described in the utility model is adapted to more surface of solids forms, the state to the surface of solids that can be instant is entered Row feedback.
4. device described in the utility model adapts to the defects detection caused by various factors in the surface of solids, and can be fixed The surface of the analysis solid of amount.
5. the utility model device can overcome the near-field effect problem in detection process, and preferably solve
The problem of check frequency.
Brief description of the drawings
Fig. 1 a ~ Fig. 1 d are the various of the device of multidirectional controllable male part detection surface of solids defect in the utility model example Detects schematic diagram;
Fig. 2 is the ultrasonic signal schematic flow sheet of detection means in the utility model example;
Fig. 3 is the embodiment schematic diagram of detection means in the utility model example;
Fig. 4 is ultrasonic probe detection direction schematic diagram during ultrasound detection in the utility model example.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, clear and definite, develop simultaneously implementation referring to the drawings The utility model is further described example.It should be appreciated that specific implementation described herein is only to explain this practicality It is new, it is not used to limit the utility model, it is noted that key of the present utility model is the technical side for proposing structure Case, it is existing ripe technology to be related to calculating of ultrasonic signal etc., if the process or parameter of promising special detailed description below, It is that those skilled in the art can refer to prior art realization or understand.
A kind of multidirectional controllable male part detects the device of surface of solids defect, combine transmitting-receiving linear transducer array with it is multidirectional controllable Male part.Multidirectional controllable male part in the present embodiment is made by silica gel couplant material, and solid to be measured controllable is coupled with multidirectional Part is combined, and is easy to surface of solids defects detection being converted to Inner Defect Testing.
Figure Fig. 1 a ~ Fig. 1 d, Fig. 2, Fig. 3, Fig. 4 is referred to, as shown in Fig. 2 wherein, solid 1 to be measured occurs in that face crack 2, directly carry out supersonic sounding when due to near-field effect, it is impossible to accurately detecting to the crackle.The present embodiment is used in combination transmitting-receiving and visited Head array and multidirectional controllable male part, multidirectional controllable male part 3 are placed between transmitting-receiving linear transducer array and the surface of solids, due to many There is certain height to controllable male part so that surface of solids crackle is converted to internal flaw.Wherein transmitting-receiving linear transducer array by Ultrasound emission probe 4 and ultrasonic reception probe 5 are constituted.Ultrasonic signal flow as shown in figure 3, transmitting-receiving linear transducer array detection angle with The change in orientation is as shown in Figure 4.X-y plane is parallel to detect the plane of the surface of solids, and z-plane is perpendicular to detection solid table The plane in face.With the deformation and movement of multidirectional controllable male part, transmitting-receiving linear transducer array can be in rotary moving along x-y plane, To carry out the detection of all directions, angle;Transmitting-receiving linear transducer array can also be moved along z-axis, stepping up and down, realize different depth Detection.
Described transmitting-receiving linear transducer array, centrally located is ultrasound emission probe 4, multiple around ultrasound emission Probe arrangement Ultrasonic reception probe 5, forms the transmitting-receiving linear transducer array of " being received single-shot " more.So that receiving signal more comprehensively has more completeness, compared with " MIMO " needs repeatedly deflection and focusing operation, and described transmitting-receiving linear transducer array only needs the transmitting and reception of few number of times, The specifying information of defect can be obtained, passes through the qualitative analysis for realizing defect of signal transacting.
As a kind of embodiment, with reference to Fig. 1,2,3,4, specific surface of solids defect inspection process is retouched State:
Step 1:Before detection starts, the setting signal generating unit ultrasonic signal parameter to be generated, to meet ultrasonic letter Number configuration condition.
Step 2:The appropriate silica gel of selection forms multidirectional controllable male part and is brought into close contact with the surface of solids to be measured, to meet The physical condition needed.
Step 3:Along with deformation such as Fig. 1 a ~ Fig. 1 d of multidirectional controllable male part in detection process, transmitting-receiving linear transducer array can Plane Rotation receives the echo-signal of each different angle, such as Fig. 1 b, 1d;Or stepping is received with meeting transmitting-receiving linear transducer array up and down The actual echo-signal from surface of solids different distance, such as Fig. 1 a, 1c;Or Plane Rotation receives many with the detection of stepping up and down simultaneously The echo-signal of angle is tieed up, such as figure Fig. 1 a ~ Fig. 1 d, the above meets detection in different situations.
Step 4:Echo-signal reaches corresponding signal processing unit, signal processing unit docking via ultrasonic reception probe The echo-signal received carries out noise reduction process, feature extraction and signal analysis and obtains required echo-signal parameter.
Step 5:According to by multidirectional controllable male part and solid to be measured as overall being received and through signal processing unit Echo-signal parameter, to judge that whole interior, with the presence or absence of various forms such as the size length of defect and defect, is converted to Judgement of the surface of solids to be measured with the presence or absence of various forms such as the size length of defect and defect.
The device is used in combination by transmitting-receiving linear transducer array with multidirectional controllable male part, and transmitting-receiving linear transducer array can Plane Rotation shape Into the multi-faceted detection of multi-angle, with multidirectional controllable male part be used in combination can before and after stepping so as to collecting the spy under different distance Data are surveyed, i.e., the detection of different depth is realized by changing the height of multidirectional controllable male part.Due in transonic process There is blind area in the pulse-echo of compressional wave, and defect is orientated the influence to detection sensitivity, and the acoustic pressure near field region has very big Fluctuating there is near-field effect, some defects in positioned at surface and closely surface or near field region are often difficult to detection. The defect of the surface of solids or near surface can be converted to solid interior and detect and overcome near-field effect with more by the utility model device Good adaptation ultrasound detection, and good portability, can be applied to it is various under the conditions of surface of solids detection.
Above-described embodiment is the utility model preferably embodiment, but embodiment of the present utility model is not by above-mentioned The limitation of embodiment, it is other it is any without departing from Spirit Essence of the present utility model with made under principle change, modify, replace Generation, combination, simplification, should be equivalent substitute mode, are included within protection domain of the present utility model.

Claims (3)

1. a kind of multidirectional controllable male part detects the device of surface of solids defect, it is characterised in that the letter including generating ultrasonic signal Number generating unit, multidirectional controllable male part, transmitting-receiving linear transducer array and signal processing unit, multidirectional controllable male part is located at during detection It is detected between solid and transmitting-receiving linear transducer array, signal generating unit is connected with receiving and dispatching the ultrasound emission probe of linear transducer array, is believed Number processing unit is connected with receiving and dispatching the ultrasonic reception probe of linear transducer array;Multidirectional controllable male part can be moved in checking process and Deformation enables transmitting-receiving linear transducer array to be rotated in detection plane, and multidirectional controllable male part can also make transmitting-receiving probe battle array by flexible It is listed in and steps up movement perpendicular to the side of detection plane, the receipts of supersonic sounding data is realized through the coupling layer of different-thickness Hair, so that the detection that the detection of surface of solids defect is changed into internal flaw is realized, the echo letter that transmitting-receiving linear transducer array is received Number feature extraction is carried out by signal processing unit, defect recognition and testing result is provided.
2. a kind of multidirectional controllable male part according to claim 1 detects the device of surface of solids defect, it is characterised in that The multidirectional controllable male part independently of transmitting-receiving linear transducer array and solid to be measured, it is necessary to when being detected, multidirectional controllable male part It is positioned between transmitting-receiving linear transducer array and solid to be measured.
3. a kind of multidirectional controllable male part according to claim 1 detects the device of surface of solids defect, it is characterised in that The transmitting-receiving linear transducer array includes centrally located ultrasound emission and pops one's head in and connect around multiple ultrasounds of ultrasound emission Probe arrangement Receive probe.
CN201720102108.0U 2017-01-26 2017-01-26 A kind of multidirectional controllable male part detects the device of surface of solids defect Active CN206563728U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108982666A (en) * 2018-07-24 2018-12-11 北京工业大学 A kind of water logging ultrasonic non-destructive measurement method to hardened structure reflection/transmission coefficient

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108982666A (en) * 2018-07-24 2018-12-11 北京工业大学 A kind of water logging ultrasonic non-destructive measurement method to hardened structure reflection/transmission coefficient

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