CN214201305U - Acoustic emission monitoring system for glue joint welding stretching process - Google Patents
Acoustic emission monitoring system for glue joint welding stretching process Download PDFInfo
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- CN214201305U CN214201305U CN202022749676.4U CN202022749676U CN214201305U CN 214201305 U CN214201305 U CN 214201305U CN 202022749676 U CN202022749676 U CN 202022749676U CN 214201305 U CN214201305 U CN 214201305U
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- stretching process
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000008569 process Effects 0.000 title claims abstract description 29
- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
- 238000003466 welding Methods 0.000 title abstract description 23
- 239000003292 glue Substances 0.000 title abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 239000007822 coupling agent Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model discloses a glue joint welds stretching process acoustic emission monitoring system, including acoustic emission sensor I, acoustic emission sensor II, preamplifier, wave filter and computer, acoustic emission sensor I with one end of acoustic emission sensor II hugs closely in the test piece surface department with weld the nuclear equidistance through the couplant respectively, acoustic emission sensor I with the output of acoustic emission sensor II with preamplifier's input is connected, preamplifier's output with the input of wave filter is connected, the output of wave filter with the input of computer is connected; the computer passes through acoustic emission data acquisition analysis software and gathers and the analysis to the signal, the utility model discloses can realize the real-time supervision to the bonding spot welding stretching process, the acoustic emission signal characteristic at the different damage stages in the effective analysis stretching process.
Description
Technical Field
The utility model relates to a splice spot welding tensile in-process damage monitoring field especially relates to a splice spot welding tensile process acoustic emission monitoring system.
Background
The glue joint and spot welding technology is a composite connecting technology combining glue joint and spot welding, which not only improves the defects of stress concentration, low fatigue strength and the like of spot welding joints, but also improves the static performance of glue joints, so that the glue joint and spot welding technology is more and more widely applied to the field of automobile manufacturing. In actual production and application, the strength of the glue welding joint is one of important indexes for ensuring the safety and the anti-collision performance of the automobile body. For testing the quality of the glue joint, a static tensile shear test is generally performed.
However, in the prior art, due to the lack of a monitoring system, workers can only judge different damage stages in the stretching process through field observation and a load-displacement curve, accurate and effective dynamic real-time online monitoring cannot be realized, and the problems of small information quantity and large error are solved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a glue joint and weld tensile process acoustic emission monitoring system can solve in current technique through setting up monitoring system, leads to the staff can only judge the different damage stages that tensile process was located through on-the-spot observation and load-displacement curve because of lacking monitoring system, can not realize accurate effectual dynamic real-time on-line monitoring, and the information volume that obtains is few moreover, the big problem of error.
In order to solve the technical problem, the utility model provides a following technical scheme: an acoustic emission monitoring system for a glue joint welding stretching process comprises an acoustic emission sensor I, an acoustic emission sensor II, a preamplifier, a filter and a computer, wherein one end of the acoustic emission sensor I and one end of the acoustic emission sensor II are respectively and tightly attached to the surface of a test piece which is equidistant to a welding core through a coupling agent, the output ends of the acoustic emission sensor I and the acoustic emission sensor II are connected with the input end of the preamplifier, the output end of the preamplifier is connected with the input end of the filter, and the output end of the filter is connected with the input end of the computer.
As an optimized technical scheme of the utility model, acoustic emission sensor I with acoustic emission sensor II adopts R15 alpha acoustic emission sensor.
As a preferred technical solution of the present invention, the preamplifier adopts an AEwin preamplifier.
As an optimized technical scheme of the utility model, RV920-16A power filter is adopted to the wave filter.
As an optimized technical scheme of the utility model, the computer is installed acoustic emission data Acquisition analysis software Acquisition 32.
Compared with the prior art, the utility model discloses the beneficial effect that can reach is:
1. the acoustic emission sensor is arranged, so that high-sensitivity and high-precision information monitoring can be realized, the contained information amount is large, and the operation and the use are convenient while the working efficiency is improved.
2. By setting the acoustic emission data acquisition and analysis software to acquire and analyze the acoustic emission signals and analyze the characteristic parameters of the signals, such as time, amplitude, impact count, form change and the like, the real-time monitoring of different damage stages in the stretching dynamic process is realized.
Drawings
Fig. 1 is a schematic block diagram of the present invention;
FIG. 2 is a schematic diagram of signals of interface tearing during the stretching process of the glue joint spot welding collected by the utility model;
FIG. 3 is a schematic diagram of the signal of tearing the substrate during the stretching process of the splice spot welding collected by the present invention;
FIG. 4 is a collision counting process chart of the tearing failure process of the interface of the glue joint spot welding test piece collected by the utility model;
fig. 5 is the utility model discloses the process striking count process chart that became invalid is torn to the joint spot welding test piece base plate of gathering.
Wherein: 1. an acoustic emission sensor I; 2. an acoustic emission sensor II; 3. a preamplifier; 4. a filter; 5. and (4) a computer.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the invention easy to understand, the invention is further explained below with reference to the specific embodiments, but the following embodiments are only the preferred embodiments of the invention, not all. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example (b):
as shown in fig. 1-5, the utility model provides a glue joint welding stretching process acoustic emission monitoring system, including acoustic emission sensor I1, acoustic emission sensor II 2, preamplifier 3, wave filter 4 and computer 5, acoustic emission sensor I1 and acoustic emission sensor II 2's one end is hugged closely in the test piece surface department with weld the nuclear equidistance through the couplant respectively, acoustic emission sensor I1 and acoustic emission sensor II 2's output is connected with preamplifier 3's input, preamplifier 3's output is connected with wave filter 4's input, wave filter 4's output and computer 5's input are connected;
in other embodiments, the acoustic emission sensor I1 and the acoustic emission sensor II 2 adopt an R15 alpha acoustic emission sensor;
in other embodiments, the preamplifier 3 employs an AEwin preamplifier;
in other embodiments, filter 4 employs an RV920-16A power filter;
in other embodiments, the computer 5 is equipped with acoustic emission data Acquisition analysis software Acquisition 32;
the utility model discloses a theory of operation is: in the embodiment, the coupling agent adopts 7501 high vacuum silicone grease, during the extension process of the glue joint and spot welding, the material can quickly release transient elastic stress wave when plastic deformation and cracks are initiated, expanded and broken, so that the polarization phenomenon occurs in the internal charges of the acoustic emission sensor I1 and the acoustic emission sensor II 2, the signals are transmitted to the preamplifier 3 through the output ends of the acoustic emission sensor I1 and the acoustic emission sensor II 2, the signals are transmitted to the filter 4 after being amplified by the preamplifier 3, the filter 4 carries out filtering processing on the signals and transmits the signals to the computer 5, the computer 5 collects and analyzes the signals through acoustic emission data collection and analysis software, characteristic parameters such as signal time, amplitude, impact count, form change and the like, thereby realizing the real-time monitoring of the spot welding and extension process, as shown in figures 2-3, at the moment of glue joint failure, the interface tearing failure occurs in a plurality of groups of intensive acoustic emission signals, the tearing failure of the substrate only generates a group of acoustic emission signals, the length of the signals of the tearing failure of the interface is larger than that of the tearing failure of the substrate, and the damage stage of the bonding spot welding stretching process can be obtained by comparing the signals; the acoustic emission signals of two typical failure modes in the stretching process of the glue welding joint are extracted, the impact counting-time change curve corresponding to the load-time curve is fitted as shown in fig. 4 and 5, and the stretching process of the glue welding test piece can be divided into three different damage stages: the acoustic emission monitoring system can realize real-time monitoring of different damage stages in the dynamic process of bonding spot welding stretching.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a glued joint welds stretching process acoustic emission monitoring system, includes acoustic emission sensor I (1), acoustic emission sensor II (2), preamplifier (3), wave filter (4) and computer (5), its characterized in that: one end of the acoustic emission sensor I (1) and one end of the acoustic emission sensor II (2) are respectively clung to the surface of the test piece with the same distance with the weld nucleus through a coupling agent, the output ends of the acoustic emission sensor I (1) and the acoustic emission sensor II (2) are connected with the input end of the preamplifier (3), the output end of the preamplifier (3) is connected with the input end of the filter (4), and the output end of the filter (4) is connected with the input end of the computer (5).
2. The system for monitoring acoustic emission during bond wire stretching process according to claim 1, wherein: the acoustic emission sensor I (1) and the acoustic emission sensor II (2) adopt R15 alpha acoustic emission sensors.
3. The system for monitoring acoustic emission during bond wire stretching process according to claim 1, wherein: the preamplifier (3) adopts an AEwin preamplifier.
4. The system for monitoring acoustic emission during bond wire stretching process according to claim 1, wherein: the filter (4) adopts an RV920-16A power supply filter.
5. The system for monitoring acoustic emission during bond wire stretching process according to claim 1, wherein: and the computer (5) is provided with acoustic emission data Acquisition and analysis software Acquisition 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022749676.4U CN214201305U (en) | 2020-11-25 | 2020-11-25 | Acoustic emission monitoring system for glue joint welding stretching process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022749676.4U CN214201305U (en) | 2020-11-25 | 2020-11-25 | Acoustic emission monitoring system for glue joint welding stretching process |
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| Publication Number | Publication Date |
|---|---|
| CN214201305U true CN214201305U (en) | 2021-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022749676.4U Active CN214201305U (en) | 2020-11-25 | 2020-11-25 | Acoustic emission monitoring system for glue joint welding stretching process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214201305U (en) |
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2020
- 2020-11-25 CN CN202022749676.4U patent/CN214201305U/en active Active
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