CN208350660U - A kind of bronze surface defect detecting system - Google Patents
A kind of bronze surface defect detecting system Download PDFInfo
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- CN208350660U CN208350660U CN201821022499.6U CN201821022499U CN208350660U CN 208350660 U CN208350660 U CN 208350660U CN 201821022499 U CN201821022499 U CN 201821022499U CN 208350660 U CN208350660 U CN 208350660U
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Abstract
The utility model discloses a kind of bronze surface defect detecting systems, including optical path generation device, data acquisition device and data processing equipment；Wherein, optical path generation device includes laser generator and light path regulator；Data acquisition device includes capacitive displacement transducer, preamplifier and high-speed data acquisition card；Data processing equipment includes data processor and display, data acquisition device is to extract amplified current potential shifting signal, data processing equipment to extract because of the effect of defect non-linear modulation caused by new supersonic frequency composition characteristic value, and characteristic value is arranged according to the spatial position of scanning element, to show defective locations and size with image mode, and visualization display is carried out in display.The position of system energy Scanning Detction bronze surface defect and dimension information disclosed in the utility model have many advantages, such as that detection efficiency is high, detection accuracy is high, not damaged to bronze surface to be measured.
Description
Technical field
The utility model belongs to archaeology field more particularly to a kind of system for bronze surface defects detection.
Background technique
Bronze ware is occurred all over the world, is a kind of symbol of worldwide civilization.With the hair of Chinese archaeology cause
Exhibition, China have also dug up a large amount of bronze relics in succession.Bronze relic is primarily referred to as: with the production of ancient times traditional handicraft
, using tin, lead, copper as the bronze utensil of basic element.It is influenced by casting technique and external environment, bronze surface easily generates
The defects of sand hole, core or fatigue crack.It cannot such as find simultaneously to repair as early as possible in time, in external environment (such as temperature, humidity, outer
Power effect etc.) under the influence of, these defects may gradually extend, and eventually lead to bronze relic and produce fracture formula destruction, this is right
In the protection of bronze relic be extremely disadvantageous.Therefore, to bronze surface defect, especially surface early stage tiny flaw into
Row detection, is of great significance for the protection of historical relic.
Domestic and international existing bronze surface defects detection mode mainly has EDDY CURRENT, ray detection, ultrasound examination etc..
EDDY CURRENT generates current vortex in bronze surface and induced inside first with ferromagnetic loop, and then according to magnetic distribution situation
Judge bronze ware inside and surface quality situation.But the current vortex generated inside bronze ware will lead to bronze ware and be tested position company
Supervention heat, may will affect bronze surface and inner materials, this is extremely disadvantageous to historical relic's protection.Ray detection is generally using penetrating
Line (such as X-ray) irradiates bronze ware to be measured, by attenuation degree after observation Radiolucent bronze ware to bronze surface and interior
Portion's quality condition is detected.This detection method has compared with macrolesion, substantially not at present to environment, to operator's body
Using.The most common mode of bronze surface defects detection is ultrasound examination.Ultrasonic wave is in bronze surface and internal progress
When propagation, when bronze surface existing defects, Ultrasonic Wave Propagation Character (such as amplitude, phase) changes, by passing to wave
The change for broadcasting characteristic is analyzed, and can be detected to defect.Conventional ultrasonic wave detection mode generally utilizes ultrasonic transducer
In bronze surface excitation ultrasound wave, recycles piezoceramic transducer etc. to receive in bronze surface and act on postwave with defect
Shape, by being analyzed wave propagation characteristic change to realize defects detection.This detection mode has the following disadvantages: that (1) is super
Sonic transducer needs directly contact bronze surface to carry out ultrasonic excitation, and ultrasonic transducer may scratch bronze ware in detection
Surface, (2) ultrasonic transducer or piezoceramic transducer need Nian Jie with bronze surface by couplant, and couplant may be right
Bronze ware generates corrosiveness, and (3) under certain specific conditions (such as anaerobic, high pressure), detection is likely to occur mistake with couplant
Effect problem, ultrasonic transducer used in (4) or piezoceramic transducer are relatively large sized, there is larger inspection in the detection process
Survey blind area.
Utility model content
The utility model is to solve the deficiency of existing bronze surface defects detection mode and provide a kind of bronze surface
Defect detecting system can carry out efficient, high-precision, non-destructive testing to practical bronze surface defective locations, size.
The utility model is a kind of bronze surface defect detecting system for solving the technical problem, comprising: optical path produces
Generating apparatus, data acquisition device and data processing equipment；
Wherein, optical path generation device includes laser generator and light path regulator；Laser generator is to excite high energy to swash
Light pulse beam；Light path regulator to laser generator is generated High Power Laser Pulses Shu Jinhang focusing, light splitting, and control
High Power Laser Pulses beam is scanned detection to bronze surface to be detected with scheduled rate and preset path；
Data acquisition device includes capacitive displacement transducer, preamplifier and high-speed data acquisition card；Condenser type position
Displacement sensor is set to the designated position above bronze surface to be detected, is non-contact relationship with bronze surface to be detected,
To generate dielectric displacement letter after the laser ultrasonic generated after induction High Power Laser Pulses beam is irradiated to bronze surface to be detected
Number；Capacitive displacement transducer output end connects preamplifier input terminal, and preamplifier is to sense capacitive displacement
The weak electrical potentials shifting signal that device generates amplifies；Preamplifier output end connects high-speed data acquisition card input terminal, to
Current potential shifting signal after amplification is acquired；
Data processing equipment includes data processor and display, the output end and data processor of high-speed data acquisition card
Input terminal is connected, and data processor output end is connected with display, and data processor is to extract amplified dielectric displacement
Signal, the characteristic value of new supersonic frequency composition caused by being handled to obtain because of the effect of defect non-linear modulation, and by feature
Value is arranged according to the spatial position of scanning element, and defective locations and size are showed with image mode, and is transferred to
Display is shown.
Wherein, the spot diameter of High Power Laser Pulses beam is 0.3mm after line focus.
Wherein, laser generator generate High Power Laser Pulses beam after, by a beam splitter effect be divided into first laser beam with
Second laser beam；Wherein, first laser beam opens high-speed data acquisition card enable port as trigger signal, so that high-speed data
Capture card enters working condition, and second laser beam is irradiated to bronze surface to be detected under the control of light path regulator, with right
Bronze surface defect to be detected carries out two-dimensional lattice Scanning Detction.
Wherein, it is period shape that light path regulator, which controls second laser beam in the scan path that bronze surface to be detected detects,
Square wave, distance is 0.1mm between adjacent two scanning element.
Wherein, laser generator is Nd:YAG laser generator, and institute's excitation pulse beam pulse width is 20ns, and wavelength is
1064nm, stimulating frequency 20KHz.
The utility model beneficial effect is: (1) Remote Non-touch of detection laser ultrasonic excites and utilizes capacitor
Formula displacement sensor uses the contactless received collocation of ultrasonic signal, realizes the contactless of bronze surface defect
Measurement, therefore this system can be worked normally in extreme environments such as anaerobic, high temperature；(2) data processing equipment is being extracted because of defect
There are when caused new radio-frequency component wave character value, state space method and nonlinear characteristic parameters: local attraction are introduced
Son variation ratio, it is higher to flaw sensitivity relative to conventional linear characteristic parameter, such as mean value, variance, thus defects detection essence
Degree is high；(3) laser generator, light path regulator, scanning galvanometer are integrated in control cabinet, control cabinet is fixed lie in ground or its
Optical path fix stably on his supporter, therefore in control cabinet, therefore can effectively avoid vibrating the influence for generating optical path；(4)
The flaw indication feature that data processing equipment extracts can carry out over the display visualization real-time display with image format, help
In operator in real time, intuitively understand bronze surface defect situation to be measured；(5) use of laser scanner technique realizes defect
The accurate detection of position and dimension information, the scanning element number occupied in image by calculating defect, sweeps according to adjacent two
Distance between described point can accurately calculate crack size.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of bronze surface defect detecting system described in the utility model.
Fig. 2 is a kind of three dimensional structure diagram of bronze surface defect detecting system described in the utility model.
Fig. 3 is a kind of light channel structure figure of bronze surface defect detecting system described in the utility model.
Fig. 4 is the bronze surface image containing practical sand hole defect, which is shot by Keyemce electron microscope and generated, put
Big multiple is 50 times.
Fig. 5 is to utilize a kind of bronze surface microdefect detection system bronze ware table described in Fig. 4 described in the utility model
Planar defect detected after defect imaging figure.
Drawing reference numeral: 1- laser generator, 2- light path regulator, 3- bronze ware containing defect to be measured, 4- capacitive displacement pass
Sensor, 5- preamplifier, 6- high-speed data acquisition card, 7- data processor, 8- display, the first convex lens of 9-, 10- light splitting
Mirror, the second convex lens of 11-, 12- reflecting mirror, 13- scanning galvanometer.
Specific embodiment
Further more detailed description is made to the technical solution of the utility model With reference to embodiment.Obviously,
Described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on the utility model
In embodiment, those of ordinary skill in the art's every other implementation obtained without making creative work
Example all should belong to the range of the utility model protection.
Referring to Figures 1 and 2, Fig. 1 is that a kind of structure of bronze surface defect detecting system provided by the utility model is shown
It is intended to, Fig. 2 is a kind of three dimensional structure diagram of bronze surface defect detecting system provided by the utility model.The system packet
It includes: optical path generation device, data acquisition device and data processing equipment；
Wherein, optical path generation device includes laser generator 1 and light path regulator 2；Laser generator 1 is to excite high energy
Laser pulse beam；Light path regulator 2 to laser generator is generated High Power Laser Pulses Shu Jinhang focusing, light splitting, and
It controls High Power Laser Pulses beam and detection is scanned to 3 surface of bronze ware to be detected with scheduled rate.The light path schematic diagram of generation
As shown in Figure 3.
Data acquisition device includes capacitive displacement transducer 4, preamplifier 5 and high-speed data acquisition card 6；Condenser type
Displacement sensor 4 is set to the designated position of 3 surface of bronze ware to be detected, is non-contact with 3 surface of bronze ware to be detected
Relationship, to generate electricity after the laser ultrasonic generated after induction High Power Laser Pulses beam is irradiated to bronze surface to be detected
Displacement signal；4 output end of capacitive displacement transducer connects 5 input terminal of preamplifier, and preamplifier 5 is to by condenser type
The weak electrical potentials shifting signal that displacement sensor 4 generates amplifies；5 output end of preamplifier connects high-speed data acquisition card 6
Input terminal, to be acquired to current potential shifting signal after amplification.
Data processing equipment includes data processor 7 and display 8, at the output end and data of high-speed data acquisition card 6
Reason 7 input terminal of device is connected, and 7 output end of data processor is connected with display 8, after data processor 7 is to extract amplification
Current potential shifting signal, the characteristic value of new supersonic frequency composition caused by being handled to obtain because of the effect of defect non-linear modulation,
And characteristic value is arranged according to the spatial position of scanning element, defective locations and size are showed with image mode,
And it is transferred to display and is shown.
The optical path generation device of the utility model includes control laser generator 1 and light path regulator 2；Light path regulator
2 control laser beams are scanned detection to 3 surface of bronze ware to be measured with given pace and preset path.
Data acquisition device includes capacitive displacement transducer 4, preamplifier 5 and high-speed data acquisition card 6, condenser type
Displacement sensor 4 is placed on 3 surface of bronze ware, one fixed point to be measured to acquire laser pulse beam in 3 table of bronze ware to be measured
Face institute excitation laser ultrasonic wave, capacitive displacement transducer 4 and 3 surface of bronze ware are non-contact relationships；Capacitive displacement sensing
4 delivery outlet of device is connected with 5 input port of preamplifier, and preamplifier 5 is to be incuded capacitive displacement transducer 4
Weak electrical potentials shifting signal amplifies；5 delivery outlet of preamplifier is connected with 6 input port of high-speed data acquisition card, to right
Electric signal is displaced after amplification to be sampled；
Data processing equipment includes data processor 7 and display 8,6 output end of high-speed data acquisition card and data processing
7 input terminal of device is connected, and 7 output end of data processor is connected with display 8, and data processor 7 is to extract because defect is non-
The characteristic value of new supersonic frequency composition caused by linear modulation effect, and arrange to characteristic value according to spatial position, into
And defective locations and size can be showed with image mode.
The optical path generation device further includes the first convex lens 9 being sequentially located in the transmitting optical path of laser generator 1, light splitting
Mirror 10, the second convex lens 11, reflective mirror 12 and scanning galvanometer 13；Spectroscope 10 is located at the focal position of the first convex lens 9；Second
Convex lens 11 and reflective mirror 12 are located on the transmitted light path of spectroscope 10；Scanning galvanometer is located on the reflected light path of reflective mirror 12.
The laser that laser generator 1 is launched converges to a bit after the first convex lens 9, and spectroscope 10 is placed in just
First convex lens, 9 focal point is to receive convergence laser beam；Spectroscope 10 be beam splitter, by laser beam be divided into first laser beam with
Second laser beam, first laser beam are projected from 10 downward vertical of spectroscope, enable high-speed data acquisition card 6 as trigger signal,
High-speed data acquisition card 6 is set to enter working condition, second laser beam is horizontal from spectroscope 10 to be projected, and the second convex lens 11 will
Laser beam spot diameter further reduces, and to improve detection accuracy, the second laser beam after the focusing of the second convex lens 11 enters
It is mapped to reflecting mirror 12, second laser beam incident direction is changed to straight down, be incident on scanning galvanometer 13 from level by reflecting mirror 12
Center, scanning galvanometer 13 are controlled second laser beam and are swept with given pace and preset path on 3 surface of bronze ware to be measured
It retouches, laser ultrasonic can be gone out in 3 surface excitation of bronze ware by scanning incident second laser beam, and the laser ultrasonic mainly wraps
Include surface wave, longitudinal wave and shear wave.
Capacitive displacement transducer 4 is located above 3 outer surface of bronze ware, one fixed point to be measured, is non-with bronze ware 3 to be measured
Contact relationship, 3 outer surface of bronze ware to be measured constitute the first pole plate of capacitive displacement transducer 4, capacitive displacement transducer 4
The second pole plate be made of high-elastic, high sensitive material, when laser ultrasonic reach 3 outer surface of bronze ware fixed point to be measured when,
The point leads to the first pole plate and the second pole plate relative position of capacitive displacement transducer 4 because wave conduction generates up-down vibration
It changes, so that the capacitor of capacitive displacement transducer 4 changes, capacitive displacement transducer 4 is finally made to export electricity
Pressure changes；4 output end of capacitive displacement transducer is connected by data line with preamplifier 5, and preamplifier 5 is used
The collected weak electrical potentials shifting signal of capacitive displacement transducer 4 is amplified into processing；5 output end of preamplifier and height
Fast 6 input terminal of data collecting card is connected, and the high-speed data acquisition card 6 enabled by second laser beam can be to amplified current potential
Shifting signal carries out high frequency sampling；The laser ultrasonic excited using long-range incident laser and the capacitor using non-contact measurement
The collocation of formula displacement sensor 4 uses the non-contact measurement for realizing 3 surface defect of bronze ware to be measured.
The collected current potential shifting signal of high-speed data acquisition card 6 can be transmitted to data processing equipment, and data processor 7 is first
64 superposed average processing are carried out to reduce ambient noise to collected signal, improve Signal-to-Noise, secondly data processing
Device 7 can extract exist in signal because of defect caused by new radio-frequency component characteristic value, and then inversely deduce defective locations and size letter
Breath, it is reverse to deduce defective locations and the correlation step and basic principle of dimension information are as described below: (1) control of scanning galvanometer 13 the
Dual-laser beam is scanned detection to 3 surface of bronze ware to be measured, and scan path is periodic square wave, the spacing of adjacent two scanning element
From for 0.1mm, it is assumed that scanned 3 surface region of bronze ware is 10*10mm2, then scanning lattice will be a 100*100 square
Gust, each point can be arrived by second laser beam scanning in the matrix；(2) it is recorded in the dot matrix using capacitive displacement transducer 4
The ultrasonic signal that each point is excited；(3) capacitive displacement transducer 4 is measured obtained each point signal by data processor 7
It is stored according to lattice position；(4) it takes in dot matrix a bit, point is as point of proximity using around the point, according to collecting the point
And its point of proximity ultrasonic signal, the state space of the point and its point of proximity is established respectively；(5) it is extracted using nonlinear characteristic parameters
The point and its point of proximity state space difference value, nonlinear characteristic parameters used are the variation of local attraction's in the utility model
Than the parameter is mainly used to measure two systems (two measurement points) state space difference value, and the state space of a system refers to benefit
State variable (state variable of measured point is displacement in the utility model) is obtained measured by the system to draw out
Phase space, the dynamic characteristic of system can be described in phase space with geometric figure, when system dynamic characteristic changes
(such as existing defects), corresponding change can occur for the geometric figure in state space, using characteristic value (as the utility model is mentioned
Local attraction's change ratio) these changes are demarcated, defect can be detected, when defect there are when, by defect
Influence, greatly, therefore state space difference is big for the variation of adjacent two measurement points dynamic characteristic, local attraction's change than calculated value compared with
Greatly；It waits when no defect is present, adjacent two measurement points state space difference is small, and the variation of local attraction's is smaller than calculated value；(6) will
Corresponding 100*100 local attraction of 100*100 dot matrix being calculated changes the calculated value than characteristic value according to original
The spatial position of point is put, and obtains the eigenvalue matrix of 100*100 at this time, big using shade degree representation eigenvalue
Small, maximum eigenvalue is white, and minimal eigenvalue is black, so that it may obtain distribution figure of characterized values picture, in image, defect exists
The dynamic characteristic difference of position consecutive points is big, and state space difference is also big, therefore the value of local attraction's variation ratio is calculated
Also big, therefore these points show white in the picture, state small without the adjacent two measurement points dynamic characteristic difference of defective locations
Spatial diversity is also small, therefore the value that local attraction's variation ratio is calculated is also small, these points show black in the picture, benefit
With the algorithm to an instance graph of actual defects imaging as shown in attached drawing 5, it is available to be measured by last image
Bronze surface sand hole defect position, it is further, available to lack by calculating number of scan points occupied by White Defects
Dimension information is fallen into, this is because adjacent two scanning element distance is 0.1mm, White Defects image is in X most broad edge upwards in Fig. 5
The coordinate of two points is respectively (46.5,58.2) and (62.4,58.2), it is known that the points shared by the X upwards defect are
62.4-46.5=15.9 item sand hole defect the maximum width should be 0.1*15.9mm, i.e. 1.59mm.
Bronze ware 3 to be measured is placed in three-dimensional mobile platform, realizes bronze ware 3 to be measured at three by three-dimensional mobile platform
The movement in direction, cooperation scanning galvanometer 13 act on, realize laser beam to the Scanning Detction of 3 whole surface of bronze ware to be measured, it is described
Mobile accuracy of the three-dimensional mobile platform in tri- directions X/Y/Z is 0.01mm, in this way, bronze ware to be measured 3 is in tri- skies of X/Y/Z
Between the mobile accuracy in direction can achieve 0.01mm, therefore the mobile accuracy of bronze ware to be measured 3 is high.
In the present embodiment, the laser beam spot diameter after the focusing of the second convex lens 11 is 0.3mm.
In the present embodiment, the laser generator 1 is Nd:YAG laser generator, and institute's excitation pulse beam pulse width is
20ns, wavelength 1064nm, stimulating frequency 20KHz.
It is sketched below to using method described in the utility model and its primary experiment of system progress:
A bronze ware test specimen block containing practical sand hole defect is chosen, as shown in figure 4, the figure is clapped by Keyemce electron microscope
It takes the photograph, microscope magnification is 50 times, and it is 1.52mm that measurement, which obtains practical sand hole defect maximum width, in figure.
Data acquisition device, laser generator, initialization scan galvanometer and high-speed data acquisition card are successively opened, control swashs
Optical generator emits laser pulse beam, and laser beam is radiated at bronze ware upper surface to be detected at any by optical path generation device,
Laser beam scan path is set, starts gradually to scan entire bronze ware by the collective effect of scanning galvanometer and a three-dimensional mobile platform
Test specimen upper surface, each vibration mirror scanning region are 10*10mm2, distance is 0.1mm between scanning element.
The ultrasonic signal that each scanning element in bronze ware test specimen upper surface is inspired is received using capacitance type sensor, respectively
It is integrated that scanning element signal is sent to data processing system after data collection system is integrated, according to acquired each scanning element and
Its point of proximity ultrasonic signal calculates average local attraction's subcharacter value of each scanning element, then by each characteristic value according to each
Spatial position where a point is arranged, and combining laser scanning point interval indicates defect two-dimensional size information with image format
Out, as shown in figure 5, can intuitively find out defect position information from Fig. 5.
Number of the X/Y occupied by sand hole defect to point is extracted from Fig. 5, will be counted multiplied by consecutive points interval 0.1mm, then
The position of sand hole defect and dimension information can be detected on the bronze test specimen, in Fig. 5 White Defects image X upwards most
The coordinate of two points of broad edge is respectively (46.5,58.2) and (62.4,58.2), it is known that shared by the X upwards defect
Points are that the 62.4-46.5=15.9 item sand hole defect maximum width should be 0.1*15.9mm, i.e. 1.59mm, this and its actual value
1.52mm is very identical.
The utility model beneficial effect is: (1) Remote Non-touch of detection laser ultrasonic excites and utilizes capacitor
Formula displacement sensor uses the contactless received collocation of ultrasonic signal, realizes the contactless of bronze surface defect
Measurement, therefore this system can be worked normally in extreme environments such as anaerobic, high temperature；(2) data processing equipment is being extracted because of defect
There are when caused new radio-frequency component wave character value, state space method and nonlinear characteristic parameters: local attraction are introduced
Son variation ratio, it is higher to flaw sensitivity relative to conventional linear characteristic parameter, such as mean value, variance, thus this system is to scarce
It is high to fall into detection accuracy；(3) laser generator, light path regulator, scanning galvanometer are integrated in control cabinet together, and control cabinet is fixed flat
It is placed on ground or other supporters, therefore the optical path fix stably in control cabinet, therefore vibration can effectively be avoided to produce optical path
Raw influence；(4) the flaw indication feature that data processing equipment extracts can have with image format real-time display over the display
Help operator in real time, intuitively understand bronze surface defect situation to be measured；(5) use of laser scanner technique realizes scarce
The accurate detection for falling into position and dimension information, the scanning element number occupied in image by calculating defect, according to adjacent two
Distance between scanning element can accurately calculate crack size.
The foregoing is merely the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
It is equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly or indirectly uses
In other related technical areas, it is also included in the patent protection scope of the utility model.
Claims (5)
1. a kind of bronze surface defect detecting system, which is characterized in that including optical path generation device, data acquisition device and
Data processing equipment；
Wherein, the optical path generation device includes laser generator and light path regulator；Laser generator is to excite high energy to swash
Light pulse beam；Light path regulator to laser generator is generated High Power Laser Pulses Shu Jinhang focusing, light splitting, and control
High Power Laser Pulses beam is scanned detection to bronze surface to be detected with scheduled rate；
The data acquisition device includes capacitive displacement transducer, preamplifier and high-speed data acquisition card；Condenser type position
Displacement sensor is set to the designated position above bronze surface to be detected, is non-contact relationship with bronze surface to be detected,
To generate dielectric displacement letter after the laser ultrasonic generated after induction High Power Laser Pulses beam is irradiated to bronze surface to be detected
Number；Capacitive displacement transducer output end connects preamplifier input terminal, and preamplifier is to sense capacitive displacement
The weak electrical potentials shifting signal that device generates amplifies；Preamplifier output end connects high-speed data acquisition card input terminal, to
Current potential shifting signal after amplification is acquired；
The data processing equipment includes data processor and display, the output end and data processor of high-speed data acquisition card
Input terminal is connected, and data processor output end is connected with display, and data processor is to extract amplified dielectric displacement
Signal, the characteristic value of new supersonic frequency composition caused by being handled to obtain because of the effect of defect non-linear modulation, and by feature
Value is arranged according to the spatial position of scanning element, and defective locations and size are showed with image mode, and is transferred to
Display is shown.
2. a kind of bronze surface defect detecting system as described in claim 1, which is characterized in that the superlaser after line focus
The spot diameter of pulsed beams is 0.3mm.
3. a kind of bronze surface defect detecting system as described in claim 1, which is characterized in that the laser generator generates
After High Power Laser Pulses beam, it is divided into first laser beam and second laser beam by beam splitter effect；Wherein, first laser beam is made
High-speed data acquisition card enable port is opened for trigger signal, so that high-speed data acquisition card enters working condition, second laser
Beam is irradiated to bronze surface to be detected under the control of light path regulator, to carry out two dimension to bronze surface defect to be detected
Lattice scanning detection.
4. a kind of bronze surface defect detecting system as claimed in claim 3, which is characterized in that the light path regulator control
Second laser beam is period shape square wave in the scan path that bronze surface to be detected detects, and distance is between adjacent two scanning element
0.1mm。
5. a kind of bronze surface defect detecting system as described in one of claim 1-4, which is characterized in that the laser occurs
Device is Nd:YAG laser generator, and institute's excitation pulse beam pulse width is 20ns, wavelength 1064nm, stimulating frequency 20KHz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821022499.6U CN208350660U (en) | 2018-06-29 | 2018-06-29 | A kind of bronze surface defect detecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821022499.6U CN208350660U (en) | 2018-06-29 | 2018-06-29 | A kind of bronze surface defect detecting system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702033A (en) * | 2019-10-18 | 2020-01-17 | 北京工业大学 | Three-dimensional scanner based on nanosecond pulse line laser source |
| CN113203645A (en) * | 2021-05-12 | 2021-08-03 | 华东理工大学 | Ultrahigh cycle fatigue damage detection system and method based on nonlinear laser ultrasound |
| CN116593400A (en) * | 2023-07-17 | 2023-08-15 | 国家电投集团江西电力有限公司 | Method and system for detecting black spot damage of solar panel |
-
2018
- 2018-06-29 CN CN201821022499.6U patent/CN208350660U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702033A (en) * | 2019-10-18 | 2020-01-17 | 北京工业大学 | Three-dimensional scanner based on nanosecond pulse line laser source |
| CN113203645A (en) * | 2021-05-12 | 2021-08-03 | 华东理工大学 | Ultrahigh cycle fatigue damage detection system and method based on nonlinear laser ultrasound |
| CN116593400A (en) * | 2023-07-17 | 2023-08-15 | 国家电投集团江西电力有限公司 | Method and system for detecting black spot damage of solar panel |
| CN116593400B (en) * | 2023-07-17 | 2023-10-17 | 国家电投集团江西电力有限公司 | Method and system for detecting black spot damage of solar panel |
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