CN108387640A - One kind is based on two-dimentional multi-fold ultrasonic reflection wave detecting method - Google Patents
One kind is based on two-dimentional multi-fold ultrasonic reflection wave detecting method Download PDFInfo
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- CN108387640A CN108387640A CN201810076131.6A CN201810076131A CN108387640A CN 108387640 A CN108387640 A CN 108387640A CN 201810076131 A CN201810076131 A CN 201810076131A CN 108387640 A CN108387640 A CN 108387640A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
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Abstract
The invention discloses one kind based on two-dimentional multi-fold ultrasonic reflection wave detecting method, includes the following steps：Build the sensor string being made of several ultrasonic sensors being spacedly distributed；Linear detection survey line is set in detection subject surface, and sensor string is arranged in the initial point position of detection survey line, controls the ultrasound examination that each ultrasonic sensor in sensor string carries out " multicast " successively；Traction sensor string is moved along detection survey line, carries out ultrasound examination by preceding method on each measuring point successively；Collected all ultrasonic reflections signals are subjected to the two dimension in data processing acquisition detection survey line coverage area and reflect ultrasonic wave poststack signal section.It is an advantage of the invention that：The detection method uninterrupted continuous detection continuous to progress such as thickness, the internal flaws of concrete component, testing result have continuous intuitive Two-dimensional morphology on signal section, have the characteristics that high resolution, detection are implemented rapidly and efficiently.
Description
Technical field
The invention belongs to Ultrasonic Nondestructive technical fields, and in particular to one kind is based on two-dimentional multi-fold ultrasonic reflection
Wave detecting method.
Background technology
Traditional ultrasonic wave unilateral side detection in detection subject surface arrangement is mostly the single that a hair one is received, and only
Merely with the propagation time come to concrete associated components defect and thickness be detected, therefore obtain information content it is few, detection
As a result it is easy to be difficult to obtain the inspection result of high quality by various interference.
In another kind of drilling ultrasonic detection method, it usually needs implement multiple drillings inside detection object for distinguishing
It is not lossless first to place ultrasonic wave transmitting probe and receiving transducer, this detection mode, while being drilled to detecting object knot
Also the cost that detection is implemented is considerably increased while structure causes damage.And the ultrasonic wave that drills typically at least needs one hair one of arrangement
Two drillings of receipts could complete detection work, and secondly the detection coverage area of such method is also only small between drilling line
Range, it is real to realize larger range of detection, then need to arrange more transmitting ultrasonic waves or receiving the drilling of ultrasonic wave
Now to the detection of more large coverage inside detection object.Currently used across hole ultrasound examination is also mostly to be received by a hair one
Acquisition ultrasonic wave pop one's head at two between time for propagating, and the defect between hole is detected according to time anomaly.
Invention content
According to the deficiencies of the prior art described above, It is an object of the present invention to provide one kind based on two-dimentional multi-fold ultrasound
Reflect wave detecting method, which carries out each measuring point of sensor string on detection survey line " multicast " successively
Ultrasound examination obtains ultrasonic reflections signal, and the two-dimentional reflectance ultrasound in detection survey line coverage area is obtained after data processing
Wave poststack signal section.
The object of the invention realization is completed by following technical scheme：
One kind is based on two-dimentional multi-fold ultrasonic reflection wave detecting method, it is characterised in that the detection method includes following step
Suddenly：Build the sensor string being made of several ultrasonic sensors being spacedly distributed；In detection subject surface, straight line is set
The detection survey line of type, and the sensor string is arranged in the initial point position for detecting survey line, control the sensor
Each ultrasonic sensor in string carries out the ultrasound examination of " multicast " successively, and " multicast " refers to described
A ultrasonic sensor in sensor string puts in order to the detection object internal emission ultrasonic signal, residue
Under the ultrasonic sensor synchronize and receive the ultrasonic signal that is reflected back；The sensor string is drawn along the detection survey line
It is mobile, successively ultrasound examination is carried out by preceding method on each measuring point；By collected all ultrasonic reflections signals into
The two dimension that row data processing obtains in the detection survey line coverage area reflects ultrasonic wave poststack signal section.
The sensor string includes an installation pedestal, and each ultrasonic sensor is equidistantly perpendicularly fixed at the installation
On pedestal and it is of a straight line type distribution.
The ultrasonic sensor is ultrasonic transmission/reception sensor.
The length for being smaller than the sensor string between the measuring point.
There is partial intersection coincidence in position between sensor string when making to be located at the adjacent measuring point.
Each ultrasonic sensor is carrying out ultrasonic signal transmitting and ultrasound signal receipt in the sensor string
Initial time be consistent.
Each ultrasonic sensor keeps ultrasonic signal under the control of acquisition control module in the sensor string
Emit and is consistent with the initial time of ultrasound signal receipt.
Using two-dimentional multi-fold reflected waveform data processing method by collected all ultrasonic reflections signals into line number
According to processing, method is：All ultrasonic reflections signal extractions for belonging to the same pip are out formed into common reflection point ultrasound
Wave reflection signal group；By each ultrasonic reflections signal in the common reflection point ultrasonic reflections signal group because different launch angles are made
At travel-time difference be corrected；It, will be each super in the common reflection point ultrasonic reflections signal group after travel-time difference correction to be done
Sound wave reflection signal carries out data investigation one of two dimension of composition and reflects ultrasonic wave poststack signal；Method is obtained by data processing according to this
Each road two dimension corresponding with remaining each described pip reflects ultrasonic wave poststack signal, according to the space bit of each pip
Two dimension described in the roads Zhi Jiangge, which reflects ultrasonic wave poststack signal and is arranged in the two dimension, reflects ultrasonic wave poststack signal section.
It is an advantage of the invention that：The detection method is continuously uninterrupted to progress such as thickness, the internal flaws of concrete component
Continuous detection, testing result have continuous intuitive Two-dimensional morphology on signal section, there is high resolution, detection to implement quick
The features such as efficient.
Description of the drawings
Fig. 1 is the structural schematic diagram of sensor string in the present invention；
Fig. 2 is the structural schematic diagram based on two-dimentional multi-fold reflected ultrasonic wave detecting system in the present invention；
Fig. 3 is in the present invention based on two-dimentional multi-fold reflected ultrasonic wave testing principle schematic diagram；
Fig. 4 is that single reflection point ultrasonic multi-angle irradiates multi-fold schematic diagram in the present invention.
Specific implementation mode
The feature of the present invention and other correlated characteristics are described in further detail by embodiment below in conjunction with attached drawing, with
Convenient for the understanding of technical staff of the same trade：
Picture 1-4, label 1-8 is respectively in figure：Sensor string 1, installation pedestal 2, ultrasonic sensor 3, detection object 4, inspection
Survey survey line 5, ultrasonic transmission/reception acquisition control module 6, ultrasonic reflections signal 7, data processing module 8.
Embodiment：As shown in Figs 1-4, the present embodiment is detected more particularly to a kind of based on two-dimentional multi-fold reflected ultrasonic wave
Method, the detection method specifically include following steps：
（1）As shown in Figure 1, 2, structure sensor string 1, sensor string 1 includes a cuboid installation pedestal 2, in installation pedestal 2
Several ultrasonic sensors 3 are equidistantly fixed in lower surface, and each ultrasonic sensor 3 is made to be arranged in a linear, receiving channel number（It is super
The quantity of sonic sensor 3）And interchannel away from（Spacing between ultrasonic sensor 3）Specifically regard actually detected require really
It is fixed；At the same time, by each ultrasonic sensor 3 in sensor string 1 simultaneously with a ultrasonic transmission/reception acquisition control module 6 into
Row connection, ultrasonic transmission/reception acquisition control module 6 may be implemented the control to sensor string 1 and can realize to believe ultrasonic reflections
Numbers 7 acquisition；In addition, ultrasonic transmission/reception acquisition control module 6 is also connected with data processing module 8, data processing module 8 is used
It is handled in the 6 collected data of institute of ultrasonic transmission/reception acquisition control module；
It should be noted that the ultrasonic sensor 3 used in the present embodiment is ultrasonic transmission/reception sensor, have transmitting-receiving super
The function of sound wave；
（2）As shown in Figure 1, 2, it according to the range of required detection, is surveyed in the detection of the surface layout straight line type of detection object 4
Line 5, equidistantly label has measuring point to detection survey line 5, and the spacing between adjacent measuring point also referred to as excites spacing, i.e., often
The distance that secondary sensor string 1 moves, it is specific to excite spacing be depending on testing requirements；It should be noted that make each measuring point
There are cross-coincidences the position of transmitting-receiving ultrasonic wave；, it should be ensured that excite the value of spacing to be less than the length of sensor string 1；
（3）As shown in Figs 1-4, sensor string 1 is arranged along detection survey line 5, in placement process, is of a straight line type on sensor string 1
3 direction of each ultrasonic sensor of stationary arrangement with detection survey line 5 be consistent, and allow ultrasonic sensor 3 with detection object 4
Good coupling；
The initial position of sensor string 1 is located at first measuring point of detection survey line 5, each ultrasound in control sensor string 1
Wave sensor 3 is according to unified direction（As from left to right）Emit ultrasonic signal successively（Multicast）, i.e.,：Sensor string 1
In first ultrasonic sensor 3 emit ultrasonic signal into detection object 4, second is arrived a last supersonic sensing
Device 3 receives the ultrasonic signal that the pip in record self-test object 3 is reflected back simultaneously；Second ultrasonic sensor 3 is sent out
Ultrasonic signal is penetrated, third to a last ultrasonic sensor 3 receives the ultrasonic signal being reflected back；... it is second from the bottom
A ultrasonic sensor 3 emits ultrasonic signal, the last one ultrasonic sensor 3 receives the ultrasonic signal being reflected back；From
And form the roads the n ultrasonic reflections signal at a point position, wherein n is the number of ultrasonic sensor 3 in sensor string 1
Amount；
Later, according to preset excitation spacing, sensor string 1 is moved to next measuring point along detection survey line 5, is repeated above-mentioned super
The gatherer process of sonic data；It is reciprocal according to this, until the last one measuring point on detection survey line 5；Ultrasonic transmission/reception acquisition control
Module 6 is to obtain the total m* of all point positions on detection survey line 5（n-1）Road ultrasonic reflections signal, wherein m is measuring point
Quantity, n be sensor string 1 in ultrasonic sensor 3 quantity；
（4）As shown in Figs 1-4, the m* collected to institute of data processing module 8 is utilized（n-1）Road ultrasonic reflections signal is into line number
According to processing, including following processing step：
By position coordinates calculation processing algorithm, the corresponding transceiver location of per pass ultrasonic reflections signal is calculated, and will
Corresponding coordinate value is assigned into the trace header of corresponding each road ultrasonic reflections signal；
As shown in figure 4, being screened to all ultrasonic reflections signals using road sorting process technology, a reflection will be belonged to
The point but different ultrasonic reflections signal extraction of irradiating angle out forms common reflection point ultrasonic reflections signal group；Namely
It says, according to the quantity of pip, the common reflection point ultrasonic reflections signal group of respective sets number will be generated；
By each ultrasonic reflections signal in common reflection point ultrasonic reflections signal group because irradiating angle difference due to caused by travel-time difference
Travel-time difference correction is carried out by rate correction the relevant technologies；
After travel-time difference correction to be done, using superposition algorithm, by each ultrasonic reflections in common reflection point ultrasonic signal group
Signal is overlapped one of two dimension of composition and reflects ultrasonic wave poststack signal；It is corresponding to obtain remaining each pip for method according to this
Each road two dimension reflects ultrasonic wave superposed signal；
Later, each road two dimension of superposition gained at all pips is reflected ultrasonic wave into superposed signal and is according to actual position arranged in two
Dimension reflects ultrasonic wave poststack signal section；
Finally, the two-dimentional poststack signal section progress related data that reflects ultrasonic wave is being folded using processing methods such as digital filterings
Post-processing obtains being laterally test position, and longitudinal is the two-dimensional ultrasonic reflection profile of time, and according to detection characteristics of objects and
Two-dimensional ultrasonic reflection profile feature carries out integrated interpretation to inspection result.
The advantageous effect of the present embodiment is：
（a）The present embodiment has been expanded on the basis of tradition carries out one one receipts of hair of unilateral side to detect subject surface by mostly super
Sonic sensor row multicast and repeat covering mode receive and dispatch ultrasonic wave, detection survey line on obtain from different perspectives according to
Penetrate the multi-fold reflected ultrasonic wave signal inside detection object；Again by common reflection point multi-fold trace gather into walking when school
Just, the treatment technologies such as Signal averaging make the noise in ultrasonic reflections signal significantly be suppressed, to lacking inside detection object
It falls into or the reflected wave information of structure feature body is remarkably reinforced, eventually by reflection wave on two-dimensional ultrasonic reflection profile
Distribution, energy and frequecy characteristic carry out fining detection to the defect and structure feature that detect object；
（b）The present embodiment utilizes the time difference of the transmitted wave between probe to probe, phase more unlike conventional ultrasound detection method
And energy come detect detection object inside defect and structure feature, be unique in that the sensor column by multicast
It realizes Multi probe transmitting multi-angle irradiation and arrives different probes receptions again to pip multi-angle remission, and to the reflection of multi-angle
Radio frequency channel collection carries out rate correction and overlap-add procedure, finally utilize the distributed wave of enhanced reflected ultrasonic wave, energy, frequency and
Phase property carries out fining detection to detection object；
（c）The probe that the present embodiment is made up of multisensor arranges and along the detection process that linear survey line is implemented, and realizes
It can be realized in detection object single side surface to detecting the ultrasonic irradiation inside object, and reflected from each pip
Extraction and defect or the relevant information of structure feature in ultrasonic wave；Multi probe and linear survey line are also to realize reflected waveform data simultaneously
The basis of multi-fold is realized on different pips；
（d）When being detected using the present embodiment, it is only necessary to which detecting object has an exposed Free Surface to can be realized to detection pair
As internal high density ultrasonic irradiation covering, without implementing the destructive damage such as drilling to detection object；Therefore with biography
Across the hole transmission detection method of system has lossless, the apparent advantage such as quickly.
Claims (7)
1. one kind is based on two-dimentional multi-fold ultrasonic reflection wave detecting method, it is characterised in that the detection method includes following step
Suddenly：Build the sensor string being made of several ultrasonic sensors being spacedly distributed；In detection subject surface, straight line is set
The detection survey line of type, and the sensor string is arranged in the initial point position for detecting survey line, control the sensor
Each ultrasonic sensor in string carries out the ultrasound examination of " multicast " successively, and " multicast " refers to described
A ultrasonic sensor in sensor string puts in order to the detection object internal emission ultrasonic signal, residue
Under the ultrasonic sensor synchronize and receive the ultrasonic signal that is reflected back；The sensor string is drawn along the detection survey line
It is mobile, successively ultrasound examination is carried out by preceding method on each measuring point；By collected all ultrasonic reflections signals into
The two dimension that row data processing obtains in the detection survey line coverage area reflects ultrasonic wave poststack signal section.
2. according to claim 1 a kind of based on two-dimentional multi-fold ultrasonic reflection wave detecting method, it is characterised in that institute
It includes an installation pedestal to state sensor string, and each ultrasonic sensor is equidistantly perpendicularly fixed in the installation pedestal and is in
Linear type is distributed.
3. according to claim 1 a kind of based on two-dimentional multi-fold ultrasonic reflection wave detecting method, it is characterised in that institute
It is ultrasonic transmission/reception sensor to state ultrasonic sensor.
4. according to claim 1 a kind of based on two-dimentional multi-fold ultrasonic reflection wave detecting method, it is characterised in that institute
State the length for being smaller than the sensor string between measuring point.
5. according to claim 4 a kind of based on two-dimentional multi-fold ultrasonic reflection wave detecting method, it is characterised in that make
There is partial intersection coincidence in position between sensor string when at the adjacent measuring point.
6. according to claim 1 a kind of based on two-dimentional multi-fold ultrasonic reflection wave detecting method, it is characterised in that institute
It states each ultrasonic sensor in sensor string and keeps ultrasonic signal transmitting and ultrasound under the control of acquisition control module
The initial time that wave signal receives is consistent.
7. according to claim 1 a kind of based on two-dimentional multi-fold ultrasonic reflection wave detecting method, it is characterised in that adopt
Collected all ultrasonic reflections signals are subjected to data processing, method with two-dimentional multi-fold reflected waveform data processing method
For：All ultrasonic reflections signal extractions for belonging to the same pip are out formed into common reflection point ultrasonic reflections signal
Group；By each ultrasonic reflections signal travel-time difference caused by different launch angles in the common reflection point ultrasonic reflections signal group
It is corrected；After travel-time difference correction to be done, each ultrasonic reflections in the common reflection point ultrasonic reflections signal group are believed
Number carry out data investigation constitute one of two dimension reflect ultrasonic wave poststack signal；Method is obtained and remaining each institute by data processing according to this
It states the corresponding each road two dimension of pip and reflects ultrasonic wave poststack signal, according to the spatial position of each pip by each road institute
It states two dimension and reflects ultrasonic wave poststack signal and be arranged in the two dimension and reflect ultrasonic wave poststack signal section.
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Cited By (3)
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| CN110609092A (en) * | 2019-09-04 | 2019-12-24 | 首钢京唐钢铁联合有限责任公司 | Probe coverage rate testing method and device and electronic equipment |
| CN111077227A (en) * | 2019-12-18 | 2020-04-28 | 华南理工大学 | Ultrasonic array scanning inversion method, system, storage medium and equipment |
| CN111744822A (en) * | 2020-07-30 | 2020-10-09 | 福建江夏学院 | Nondestructive testing system for testing assembly type concrete structural part |
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| CN111077227B (en) * | 2019-12-18 | 2021-11-02 | 华南理工大学 | Ultrasonic array scanning inversion method, system, storage medium and equipment |
| CN111744822A (en) * | 2020-07-30 | 2020-10-09 | 福建江夏学院 | Nondestructive testing system for testing assembly type concrete structural part |
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