CN207472830U - A kind of effect of vibration stress relief online rating system based on acoustic emission sensor - Google Patents
A kind of effect of vibration stress relief online rating system based on acoustic emission sensor Download PDFInfo
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- CN207472830U CN207472830U CN201721166850.4U CN201721166850U CN207472830U CN 207472830 U CN207472830 U CN 207472830U CN 201721166850 U CN201721166850 U CN 201721166850U CN 207472830 U CN207472830 U CN 207472830U
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- acoustic emission
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- stress relief
- emission signal
- emission sensor
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Abstract
Including master system, random waveform card, analog line driver, vibrator, acoustic emission sensor, preamplifier, main amplifier, data collecting card, support device occur for the effect of vibration stress relief online rating system based on acoustic emission sensor；Master system includes the acoustic emission signal acquisition module for obtaining the collected acoustic emission signal of data collecting card, Analysis of Acoustic Emission Signal module based on wavelet analysis method, Analysis of Acoustic Emission Signal result memory module shows the display module of Analysis of Acoustic Emission Signal result.The utility model have the advantages that can online, Nondestructive Evaluation effect of vibration stress relief.
Description
Technical field
The utility model is related to vibration aging technology fields, refer in particular to a kind of effect of vibration stress relief based on acoustic emission sensor
Online rating system and method.
Background technology
The effect assessment of vibration aging technology is one of the critical 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
It is increased 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
The bandwidth of frequency sweep curve before vibration stress relief treatment than narrowing after ageing treatment.
(2) residual stress measurement method
In order to accurately evaluate the effect of oscillating aging regulation and control residual stress, it is necessary to accurately assess Workpiece vibration timeliness
Front and rear residual stress, however the residual stress distribution situation of workpiece surface, particularly some complex part surface residual stress
Distribution, be difficult to adopt theoretical calculation method carry out analysis and solution, so using experiment measure method assessment workpiece
The size of surface residual stress has important practical significance.The experimental measurement method of residual stress mainly includes at present：It damages
Mechanical measurement method and lossless physical measurement method, can quantify assessment 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, can to the effect of vibration aging technology carry out qualitative evaluation, 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 is detected for the first time when placing 15 days, later every primary, the total placement of detection in 30 days
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
Most important parameter in the process, inevitable there are certain correlations with effect of vibration stress relief.They, which study, finds dynamic stress and remnants
There are quantitative non-linear dependencies between stress release effect, 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 that strain energy is released in the form of elastic wave, referred to as sound emission.
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 generate microscopic motion, and plastic deformation is generated so as to cause material.In conclusion sound can be used to send out
It penetrates technology and Dynamic Non-Destruction Measurement is carried out to the workpiece during oscillating aging, and the acoustic emission signal detected is analyzed,
With this evaluate oscillating aging whether produce eliminate residual stress effect.In order to enrich the evaluation method of effect of vibration stress relief,
The utility model proposes a kind of effect of vibration stress relief online rating systems and method based on acoustic emission sensor.
Utility model content
In order to enrich the evaluation method of effect of vibration stress relief, the utility model proposes a kind of shaking based on acoustic emission sensor
Dynamic timeliness effect online rating system and method.
Effect of vibration stress relief online rating system based on acoustic emission sensor is sent out including master system, random waveform
Raw card, analog line driver, vibrator, acoustic emission sensor, preamplifier, main amplifier, data collecting card, support device；
Vibrator is fixed on the surface of workpiece, and workpiece is supported using flexible support device；
The independent and continuously adjustable sinusoidal excitation of card output amplitude and frequency occurs 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 mounted on workpiece, and the output terminal of acoustic emission sensor and the input terminal of preamplifier connect
Connect, the input terminal of the output terminal of preamplifier and main amplifier connects, the output terminal of main amplifier and data collecting card it is defeated
Enter end connection, the output terminal of data collecting card is connect with master system；
Master system includes the acoustic emission signal acquisition module for obtaining the collected acoustic emission signal of data collecting card, 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 device is elastic element.
The technical concept of the utility model is：By master system, random waveform occur card, analog line driver, vibrator,
Acoustic emission sensor, preamplifier, main amplifier, data collecting card and support device composition are based on acoustic emission sensor
Effect of vibration stress relief online rating system.
The beneficial effects of the utility model are as follows：
1st, the utility model proposes the effect of vibration stress relief online rating system and method pair based on acoustic emission sensor
When effect of vibration stress relief is evaluated, workpiece will not be caused to damage, belong to lossless evaluation method.
2nd, the utility model proposes the effect of vibration stress relief online rating system and method pair based on acoustic emission sensor
It when effect of vibration stress relief carries out on-line evaluation, is controlled by master system, without manual operation, reduces work
Amount, improves work efficiency.
3rd, the utility model proposes the effect of vibration stress relief online rating system and method energy based on acoustic emission sensor
Enough realize carries out effect of vibration stress relief online, Nondestructive Evaluation purpose, and the evaluation method to study effect of vibration stress relief provides
New thinking.
Description of the drawings
Effect of vibration stress relief online rating system schematic diagrames of the Fig. 1 based on acoustic emission sensor.
Specific embodiment
With reference to attached drawing, the utility model is further illustrated：
Effect of vibration stress relief online rating system based on acoustic emission sensor is sent out including master system, random waveform
Raw card, analog line driver, vibrator, acoustic emission sensor, preamplifier, main amplifier, data collecting card, support device；
Vibrator is fixed on the surface of workpiece, and workpiece is supported using flexible support device；
The independent and continuously adjustable sinusoidal excitation of card output amplitude and frequency occurs 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 mounted on workpiece, and the output terminal of acoustic emission sensor and the input terminal of preamplifier connect
Connect, the input terminal of the output terminal of preamplifier and main amplifier connects, the output terminal of main amplifier and data collecting card it is defeated
Enter end connection, the output terminal of data collecting card is connect with master system；
Master system includes the acoustic emission signal acquisition module for obtaining the collected acoustic emission signal of data collecting card, 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 device is elastic element.
Effect of vibration stress relief on-line evaluation method based on acoustic emission sensor includes the following steps：
(1), workpiece is fixedly connected with vibrator；Workpiece is supported by flexible support device, so as to
Vibrator carries out exciting to workpiece；Acoustic emission sensor is mounted 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；Connect the signal link between acoustic emission sensor and preamplifier；It is put before connecting
Signal link greatly between device and main amplifier；Connect the signal link between main amplifier and data collecting card；Connect data
Signal link between capture card and master system；Connect master system, card occurs for random waveform, analog line driver, swashs
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 adjusting the gain knob of 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 collected acoustic emission signal of data collecting card；
To data collecting card, collected acoustic emission signal carries out wavelet analysis to Analysis of Acoustic Emission Signal module based on wavelet analysis method,
And the result for obtaining analysis is stored to Analysis of Acoustic Emission Signal result memory module；Show the aobvious of Analysis of Acoustic Emission Signal result
Show that module shows Analysis of Acoustic Emission Signal result；
(5) effect of vibration stress relief is evaluated using the characteristic frequency after acoustic emission signal wavelet analysis, works as sound emission
When signal has certain sound emission frequency range after wavelet analysis, show that workpiece produces after vibration stress relief treatment
Effect.
The way of realization that content described in this specification embodiment only conceives utility model is enumerated, this practicality is new
The protection domain of type is not construed as being only limitted to the concrete form that embodiment is stated, the scope of protection of the utility model also and
In those skilled in the art according to the utility model design it is conceivable that equivalent technologies mean.
Claims (2)
1. the effect of vibration stress relief online rating system based on acoustic emission sensor occurs including master system, random waveform
Card, analog line driver, vibrator, acoustic emission sensor, preamplifier, main amplifier, data collecting card, support device；Swash
The device that shakes is fixed on the surface of workpiece, and workpiece is supported using flexible support device；
The independent and continuously adjustable sinusoidal excitation signal of card output amplitude and frequency occurs 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 generation is shaken
It is dynamic；
Acoustic emission sensor is mounted on workpiece, and the output terminal of acoustic emission sensor and the input terminal of preamplifier connect, preceding
The input terminal of output terminal and main amplifier for putting amplifier connects, and the output terminal of main amplifier and the input terminal of data collecting card connect
It connects, the output terminal of data collecting card is connect with master system；
Master system includes the acoustic emission signal acquisition module for obtaining the collected acoustic emission signal of data collecting card, 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 described in claim 1, it is characterised in that：
Support device is elastic element.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721166850.4U CN207472830U (en) | 2017-09-13 | 2017-09-13 | A kind of effect of vibration stress relief online rating system based on acoustic emission sensor |
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| CN201721166850.4U CN207472830U (en) | 2017-09-13 | 2017-09-13 | A kind of effect of vibration stress relief online rating system based on acoustic emission sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108803A (en) * | 2019-05-08 | 2019-08-09 | 上海航天设备制造总厂有限公司 | A kind of device and method of the mixing needle broken pin test based on voice sending sensor |
-
2017
- 2017-09-13 CN CN201721166850.4U patent/CN207472830U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108803A (en) * | 2019-05-08 | 2019-08-09 | 上海航天设备制造总厂有限公司 | A kind of device and method of the mixing needle broken pin test based on voice sending sensor |
| CN110108803B (en) * | 2019-05-08 | 2021-10-01 | 上海航天设备制造总厂有限公司 | Device and method for detecting broken pin of stirring pin based on acoustic emission sensing |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20190913 |
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| CF01 | Termination of patent right due to non-payment of annual fee |