CN107389796A - A kind of effect of vibration stress relief online rating system and method based on acoustic emission sensor - Google Patents
A kind of effect of vibration stress relief online rating system and method based on acoustic emission sensor Download PDFInfo
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- CN107389796A CN107389796A CN201710819742.0A CN201710819742A CN107389796A CN 107389796 A CN107389796 A CN 107389796A CN 201710819742 A CN201710819742 A CN 201710819742A CN 107389796 A CN107389796 A CN 107389796A
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- acoustic emission
- emission signal
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- stress relief
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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
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
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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
- G01N29/14—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 using acoustic emission techniques
-
- 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
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
Abstract
Card, analog line driver, vibrator, acoustic emission sensor, preamplifier, main amplifier, data collecting card, support meanss occur for the effect of vibration stress relief online rating system based on acoustic emission sensor, including master system, random waveform；Master system includes the acoustic emission signal acquisition module for obtaining the acoustic emission signal that data collecting card collects, Analysis of Acoustic Emission Signal module based on wavelet analysis method, Analysis of Acoustic Emission Signal result memory module, show the display module of Analysis of Acoustic Emission Signal result.Effect of vibration stress relief on-line evaluation method based on acoustic emission sensor is analyzed the acoustic emission signal collected using wavelet analysis method, when acoustic emission signal has certain sound emission frequency range after wavelet analysis, show that workpiece generates effect after vibration stress relief treatment.The present invention have can online, Nondestructive Evaluation effect of vibration stress relief the advantages of.
Description
Technical field
The present invention relates to vibration aging technology field, and it is online to refer in particular to a kind of effect of vibration stress relief based on acoustic emission sensor
Evaluation system and method.
Technical background
The effect assessment of vibration aging technology is one of the key issue in vibration aging technology field.Oscillating aging skill at present
The effect evaluation method of art mainly includes：Parameter curve rating method, residual stress measurement method, precision stability detection method and dynamic
Stress criterion method.
(1) parameter curve rating method
Parameter curve rating method be according to parameter during oscillating aging occur regular variation phenomenon sum up come,
Qualitative evaluation can be carried out to the effect of oscillating aging, interpretational criteria used mainly includes：During oscillating aging during amplitude
Declining after flattening and rise after rising, which occurs, in half interval contour to be then leveled off；The resonance peak ratio of frequency sweep curve after vibration stress relief treatment
Raised before vibration stress relief treatment；The resonant frequency of frequency sweep curve before vibration stress relief treatment than reducing after vibration stress relief treatment；Vibration
Narrow after Ageing Treatment before the bandwidth ratio vibration stress relief treatment of frequency sweep curve.
(2) residual stress measurement method
In order to accurately evaluate the effect of oscillating aging regulation and control residual stress, it is necessary to assess Workpiece vibration timeliness exactly
Front and rear residual stress, but the residual stress distribution situation of workpiece surface, particularly some complex part surface residual stresses
Distribution, be difficult to adopt theoretical calculation method carry out analysis and solution, so using experiment measurement method assess workpiece
The size of surface residual stress has important practical significance.The experimental measurement method of residual stress mainly includes at present：Damage
Mechanical measurement method and lossless physical measurement method, can quantify assess Workpiece vibration Ageing Treatment before and after residual stress.
Mechanical measurement method mainly includes orifice method, slitting method etc.；Physical measurement method mainly includes x-ray method, supercritical ultrasonics technology etc..
(3) precision stability detection method
Precision stability detection method is to evaluate vibration aging technology by detecting the precision after Workpiece vibration Ageing Treatment
Effect, qualitative evaluation can be carried out to the effect of vibration aging technology, mainly including long-term placement precision method plus dynamic loading after
Precision method etc..Long-term placement precision method is by the long-term placement of workpiece after vibration stress relief treatment and periodic detection workpiece
Dimensional stability, concrete operations flow are detected for the first time when placing 15 days, later detection every 30 days once, total placement
Time should be more than half a year；Precision method is to detect the workpiece after vibration stress relief treatment in dynamic load effect after adding dynamic loading
The variable quantity of dimensional accuracy afterwards.
(4) dynamic stress criterion method
The Chen Ligong professors team of Shanghai Communications University proposes dynamic stress criterion method, because dynamic stress is as oscillating aging
During most important parameter, it is inevitable certain correlation to be present with effect of vibration stress relief.They, which study, finds dynamic stress and remnants
Quantitative non-linear dependencies between stress release effect be present, and by mathematical regression analysis and curve matching obtain them it
Between approximate function DP-CH equations, can during oscillating aging on-line checking dynamic stress, real-time quantitative judge vibration
The effect of timeliness.
When material is deformed in loading process, the phenomenon of strain energy, referred to as sound emission are discharged in the form of elastic wave.
Using acoustic emission signal is detected, the technology of Dynamic Non-Destruction Measurement, referred to as acoustic emission are carried out to material.In oscillating aging process
The dislocation of middle material internal can produce microscopic motion, so as to cause material to produce plastic deformation.In summary, sound can be used to send out
Penetrate technology and Dynamic Non-Destruction Measurement is carried out to the workpiece during oscillating aging, and the acoustic emission signal to detecting is analyzed,
With this evaluate oscillating aging whether generate eliminate residual stress effect.In order to enrich the evaluation method of effect of vibration stress relief,
The present invention proposes a kind of effect of vibration stress relief online rating system and method based on acoustic emission sensor.
The content of the invention
In order to enrich the evaluation method of effect of vibration stress relief, when the present invention proposes a kind of vibration based on acoustic emission sensor
Imitate effect online rating system and method.
Effect of vibration stress relief online rating system based on acoustic emission sensor, including master system, random waveform hair
Raw card, analog line driver, vibrator, acoustic emission sensor, preamplifier, main amplifier, data collecting card, support meanss；
Vibrator is fixed on the surface of workpiece, and workpiece is supported using flexible support meanss；
Card output amplitude and the sinusoidal excitation of frequency independence and continuously adjustabe occur for master system control random waveform
Signal；The sinusoidal excitation signal that card output occurs for random waveform is input to vibrator, driving vibrator production via analog line driver
Raw vibration；
Acoustic emission sensor is arranged on workpiece, and the output end of acoustic emission sensor and the input of preamplifier connect
Connect, the input of the output end of preamplifier and main amplifier connects, the output end of main amplifier and data collecting card it is defeated
Enter end connection, the output end of data collecting card is connected with master system；
Master system includes the acoustic emission signal acquisition module for obtaining the acoustic emission signal that data collecting card collects, base
In the Analysis of Acoustic Emission Signal module of wavelet analysis method, Analysis of Acoustic Emission Signal result memory module, display acoustic emission signal point
Analyse the display module of result.
Further, support meanss are flexible member.
Effect of vibration stress relief on-line evaluation method based on acoustic emission sensor comprises the following steps：
(1), workpiece is fixedly connected with vibrator；Workpiece is supported by flexible support meanss, so as to
Vibrator carries out exciting to workpiece；Acoustic emission sensor is arranged on workpiece；Master system is connected with random waveform to occur
Signal link between card；Random waveform is connected to occur to block the signal link between analog line driver；Connect analog line driver
Signal link between vibrator；The signal link connected between acoustic emission sensor and preamplifier；Put before connecting
Signal link greatly between device and main amplifier；The signal link connected between main amplifier and data collecting card；Connect data
Signal link between capture card and master system；Connection master system, random waveform occur card, analog line driver, swashed
Shake the power supply of device, preamplifier, main amplifier and data collecting card；
(2), master system control random waveform occurs to block carries out frequency sweep vibration to workpiece, so that it is determined that oscillating aging
Driving frequency；
(3), slowly the gain knob of regulation analog line driver makes analog line driver export constant electric current, drives vibrator
Vibration stress relief treatment is carried out to workpiece；
(4), the acoustic emission signal acquisition module in master system obtains the acoustic emission signal that data collecting card collects；
The acoustic emission signal that Analysis of Acoustic Emission Signal module based on wavelet analysis method collects to data collecting card carries out wavelet analysis,
And Analysis of Acoustic Emission Signal result memory module is arrived in the result storage for obtaining analysis；Show the aobvious of Analysis of Acoustic Emission Signal result
Show that module is shown to Analysis of Acoustic Emission Signal result；
(5) use the characteristic frequency after acoustic emission signal wavelet analysis to evaluate effect of vibration stress relief, work as sound emission
When signal has certain sound emission frequency range after wavelet analysis, show that workpiece generates after vibration stress relief treatment
Effect.
The present invention technical concept be：Card, analog line driver, vibrator, sound hair are occurred by master system, random waveform
Penetrate sensor, preamplifier, main amplifier, the vibration of data collecting card and support meanss composition based on acoustic emission sensor
Timeliness effect online rating system；The acoustic emission signal collected is analyzed using wavelet analysis method, works as acoustic emission signal
When there is certain sound emission frequency range after wavelet analysis, show that workpiece generates effect after vibration stress relief treatment
Fruit.
Beneficial effects of the present invention are as follows：
1st, effect of vibration stress relief online rating system and method proposed by the present invention based on acoustic emission sensor are to vibration
When timeliness effect is evaluated, workpiece will not be caused to damage, belong to lossless evaluation method.
2nd, effect of vibration stress relief online rating system and method proposed by the present invention based on acoustic emission sensor are to vibration
When timeliness effect carries out on-line evaluation, it is controlled by master system, without manually operated, reduces workload,
Improve operating efficiency.
3rd, effect of vibration stress relief online rating system and method proposed by the present invention based on acoustic emission sensor can be real
Online, Nondestructive Evaluation purpose is now carried out to effect of vibration stress relief, is provided newly to study the evaluation method of effect of vibration stress relief
Thinking.
Brief description of the drawings
Effect of vibration stress relief online rating system schematic diagrames of the Fig. 1 based on acoustic emission sensor.
Embodiment
Referring to the drawings, the present invention is further illustrated：
Effect of vibration stress relief online rating system based on acoustic emission sensor, including master system, random waveform hair
Raw card, analog line driver, vibrator, acoustic emission sensor, preamplifier, main amplifier, data collecting card, support meanss；
Vibrator is fixed on the surface of workpiece, and workpiece is supported using flexible support meanss；
Card output amplitude and the sinusoidal excitation of frequency independence and continuously adjustabe occur for master system control random waveform
Signal；The sinusoidal excitation signal that card output occurs for random waveform is input to vibrator, driving vibrator production via analog line driver
Raw vibration；
Acoustic emission sensor is arranged on workpiece, and the output end of acoustic emission sensor and the input of preamplifier connect
Connect, the input of the output end of preamplifier and main amplifier connects, the output end of main amplifier and data collecting card it is defeated
Enter end connection, the output end of data collecting card is connected with master system；
Master system includes the acoustic emission signal acquisition module for obtaining the acoustic emission signal that data collecting card collects, base
In the Analysis of Acoustic Emission Signal module of wavelet analysis method, Analysis of Acoustic Emission Signal result memory module, display acoustic emission signal point
Analyse the display module of result.
Further, support meanss are flexible member.
Effect of vibration stress relief on-line evaluation method based on acoustic emission sensor comprises the following steps：
(1), workpiece is fixedly connected with vibrator；Workpiece is supported by flexible support meanss, so as to
Vibrator carries out exciting to workpiece；Acoustic emission sensor is arranged on workpiece；Master system is connected with random waveform to occur
Signal link between card；Random waveform is connected to occur to block the signal link between analog line driver；Connect analog line driver
Signal link between vibrator；The signal link connected between acoustic emission sensor and preamplifier；Put before connecting
Signal link greatly between device and main amplifier；The signal link connected between main amplifier and data collecting card；Connect data
Signal link between capture card and master system；Connection master system, random waveform occur card, analog line driver, swashed
Shake the power supply of device, preamplifier, main amplifier and data collecting card；
(2), master system control random waveform occurs to block carries out frequency sweep vibration to workpiece, so that it is determined that oscillating aging
Driving frequency；
(3), slowly the gain knob of regulation analog line driver makes analog line driver export constant electric current, drives vibrator
Vibration stress relief treatment is carried out to workpiece；
(4), the acoustic emission signal acquisition module in master system obtains the acoustic emission signal that data collecting card collects；
The acoustic emission signal that Analysis of Acoustic Emission Signal module based on wavelet analysis method collects to data collecting card carries out wavelet analysis,
And Analysis of Acoustic Emission Signal result memory module is arrived in the result storage for obtaining analysis；Show the aobvious of Analysis of Acoustic Emission Signal result
Show that module is shown to Analysis of Acoustic Emission Signal result；
(5) use the characteristic frequency after acoustic emission signal wavelet analysis to evaluate effect of vibration stress relief, work as sound emission
When signal has certain sound emission frequency range after wavelet analysis, show that workpiece generates after vibration stress relief treatment
Effect.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is also and in art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (3)
1. the effect of vibration stress relief online rating system based on acoustic emission sensor, including master system, random waveform occur
Card, analog line driver, vibrator, acoustic emission sensor, preamplifier, main amplifier, data collecting card, support meanss；Swash
The device that shakes is fixed on the surface of workpiece, and workpiece is supported using flexible support meanss；
Card output amplitude and the sinusoidal excitation signal of frequency independence and continuously adjustabe occur for master system control random waveform；
The sinusoidal excitation signal that card output occurs for random waveform is input to vibrator via analog line driver, and driving vibrator, which produces, to shake
It is dynamic；
Acoustic emission sensor is arranged on workpiece, and the output end of acoustic emission sensor and the input of preamplifier connect, preceding
Put the output end of amplifier and the input of main amplifier connects, the output end of main amplifier and the input of data collecting card connect
Connect, the output end of data collecting card is connected with master system；
Master system includes the acoustic emission signal acquisition module for obtaining the acoustic emission signal that data collecting card collects, based on small
The Analysis of Acoustic Emission Signal module of wave analysis method, Analysis of Acoustic Emission Signal result memory module, show Analysis of Acoustic Emission Signal knot
The display module of fruit.
2. the effect of vibration stress relief online rating system based on acoustic emission sensor as claimed in claim 1, it is characterised in that：
Support meanss are flexible member.
3. using the effect of vibration stress relief online rating system based on acoustic emission sensor as described in claim 1-2, to shaking
The method that dynamic timeliness effect carries out on-line evaluation comprises the following steps：
(1), workpiece is fixedly connected with vibrator；Workpiece is supported by flexible support meanss, so as to exciting
Device carries out exciting to workpiece；Acoustic emission sensor is arranged on workpiece；Connect master system and card occurs with random waveform
Between signal link；Random waveform is connected to occur to block the signal link between analog line driver；Analog line driver is connected with swashing
The signal link to shake between device；The signal link connected between acoustic emission sensor and preamplifier；Connect preamplifier
Signal link between main amplifier；The signal link connected between main amplifier and data collecting card；Connect data acquisition
Signal link between card and master system；Connect master system, random waveform occur card, analog line driver, vibrator,
The power supply of preamplifier, main amplifier and data collecting card；
(2), card occurs for master system control random waveform to workpiece progress frequency sweep vibration, so that it is determined that the excitation of oscillating aging
Frequency；
(3), slowly the gain knob of regulation analog line driver makes analog line driver export constant electric current, and driving vibrator is to work
Part carries out vibration stress relief treatment；
(4), the acoustic emission signal acquisition module in master system obtains the acoustic emission signal that data collecting card collects；It is based on
The acoustic emission signal that the Analysis of Acoustic Emission Signal module of wavelet analysis method collects to data collecting card carries out wavelet analysis, and will
Analyze obtained result storage and arrive Analysis of Acoustic Emission Signal result memory module；Show the display mould of Analysis of Acoustic Emission Signal result
Block is shown to Analysis of Acoustic Emission Signal result；
(5) use the characteristic frequency after acoustic emission signal wavelet analysis to evaluate effect of vibration stress relief, work as acoustic emission signal
When there is certain sound emission frequency range after wavelet analysis, show that workpiece generates effect after vibration stress relief treatment
Fruit.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182726A (en) * | 2018-09-10 | 2019-01-11 | 上海海事大学 | A kind of oscillating aging excited frequency based on acoustic emission determines system and method |
| CN109182727A (en) * | 2018-09-10 | 2019-01-11 | 上海海事大学 | A kind of Vibration Aging Process parameter determination system and method based on acoustic emission |
| CN110579705A (en) * | 2019-10-21 | 2019-12-17 | 山东科技大学 | Relay performance analysis system based on acoustic emission |
| CN111650284A (en) * | 2020-06-17 | 2020-09-11 | 上海海事大学 | Vibration welding state detection system and method based on acoustic emission technology |
-
2017
- 2017-09-13 CN CN201710819742.0A patent/CN107389796A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182726A (en) * | 2018-09-10 | 2019-01-11 | 上海海事大学 | A kind of oscillating aging excited frequency based on acoustic emission determines system and method |
| CN109182727A (en) * | 2018-09-10 | 2019-01-11 | 上海海事大学 | A kind of Vibration Aging Process parameter determination system and method based on acoustic emission |
| CN109182727B (en) * | 2018-09-10 | 2023-03-31 | 上海海事大学 | System and method for determining vibration aging process parameters based on acoustic emission technology |
| CN109182726B (en) * | 2018-09-10 | 2023-05-26 | 上海海事大学 | Vibration aging excitation frequency determining system and method based on acoustic emission technology |
| CN110579705A (en) * | 2019-10-21 | 2019-12-17 | 山东科技大学 | Relay performance analysis system based on acoustic emission |
| CN110579705B (en) * | 2019-10-21 | 2021-10-01 | 山东科技大学 | Relay performance analysis system based on acoustic emission |
| CN111650284A (en) * | 2020-06-17 | 2020-09-11 | 上海海事大学 | Vibration welding state detection system and method based on acoustic emission technology |
| CN111650284B (en) * | 2020-06-17 | 2023-04-18 | 上海海事大学 | Vibration welding state detection system and method based on acoustic emission technology |
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Application publication date: 20171124 |