CN204536134U - A kind of guided wave mechanism for the acoustic emission monitor(ing) of uniaxial tension high-temerature creep - Google Patents
A kind of guided wave mechanism for the acoustic emission monitor(ing) of uniaxial tension high-temerature creep Download PDFInfo
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- CN204536134U CN204536134U CN201520230873.1U CN201520230873U CN204536134U CN 204536134 U CN204536134 U CN 204536134U CN 201520230873 U CN201520230873 U CN 201520230873U CN 204536134 U CN204536134 U CN 204536134U
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- stretching bar
- web member
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- acoustic emission
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Abstract
The utility model discloses a kind of guided wave mechanism for the acoustic emission monitor(ing) of uniaxial tension high-temerature creep, solve the problem that acoustic emission cannot be applied in metallic high temperature creep impairment field.Specifically comprise lower clamp mechanism and bindiny mechanism; Described lower clamp mechanism, comprises jig main body, wedge shape pincers, wedge-shaped slot, stretching bar and handle, and rotary handle drives stretching bar to move up and down, and makes wedge shape clamp subsides wedge shape groove face and slides up and down, locking test specimen; Described bindiny mechanism, comprises lower web member and double thread coupling shaft, and lower clamp mechanism is fixed on drawing machine testing table by double thread coupling shaft; Place calibrate AE sensor in lower web member, arrange couplant between sensor and stretching bar, the transient stress wave of creep process release passes to sensor by stretching bar, and turn double thread coupling shaft can jam sensor.This guided wave mechanism structure is simple, and easy for installation, signal attenuation is little, and temperature damping is fast, thus provides safeguard for the acoustic emission monitor(ing) of high-temerature creep process.
Description
Technical field
The utility model relates to acoustic emission test technology, particularly in the research process of uniaxial tension high-temperature creep injury, material damage process stress ripple is conducted to the mechanism of sensor.
Background technology
For a long time, the high-temerature creep problem of metal material is all the study hotspot of numerous scientific research institution and scholar, and the research method adopted mostly is metallographic method, hardness test, supercritical ultrasonics technology, but these methods can only find metal creep complete after correlated performance, can not monitor whole creep process, and can damage structure, there is certain limitation.Acoustic emission test technology is a kind of online measuring technique effectively can monitoring material damage process, is applied to the research field such as metal stretching, fatigue.But in the research process of uniaxial tension high-temperature creep injury, because temperature is too high, exceedes the restriction of sensor serviceability temperature, sensor cannot be directly installed on monitoring target on the surface, limit this technology and apply at the further genralrlization of creep impairment research field.Therefore, need a kind of specific mechanism to avoid the interference of high temperature, material damage process stress ripple is conducted to sensor, realize uniaxial tension simultaneously and load and acoustic emission monitor(ing).
Summary of the invention
The purpose of this utility model is to provide a kind of guided wave mechanism for the acoustic emission monitor(ing) of uniaxial tension high-temerature creep, this mechanism solves in uniaxial tension creep experiments under high temperature process because temperature is too high, sensor directly cannot be fitted in this practical problems on test specimen, thus be that the Acoustic Emission Characteristic obtaining uniaxial tension high-temerature creep process provides safeguard.
For achieving the above object, the technical solution adopted in the utility model is: a kind of guided wave mechanism for the acoustic emission monitor(ing) of uniaxial tension high-temerature creep, comprises lower clamp mechanism and bindiny mechanism; Described lower clamp mechanism, comprise jig main body, wedge shape pincers, wedge-shaped slot, stretching bar and handle, wherein jig main body arranges wedge-shaped slot, the binding clip both sides of wedge shape pincers are hinged in wedge-shaped slot by connecting rod symmetry, the bottom of wedge shape pincers is fixedly connected with the top of stretching bar, this stretching bar has also been threaded handle, and the below of stretching bar arranges cotter slot; Described bindiny mechanism, comprise lower web member and double thread coupling shaft, web member is wherein descended to be hollow cylinder, pin hole is had above its sidewall, the upper end of lower web member is fixedly connected with by the lower end of fixed pin with stretching bar, lower web member is built-in with calibrate AE sensor, and its side also has calibrate AE sensor signal wire fairlead, and the lower end of lower web member is provided with internal thread; All there is external thread at described double end coupling shaft two ends, and its upper end is threaded with the end opening of lower web member, and lower end is connected with the internal thread of drawing machine base, and drawing machine base is bolted on worktable.
The principle of work of the utility model guided wave mechanism is as follows: lower clamp mechanism is connected with drawing machine worktable by double thread coupling shaft, fixing of warranty test process lower clamp, one end of stretching bar drives wedge shape pincers to move up and down, fit tightly with test specimen top simultaneously, the other end is connected with sensor by couplant, screwing of double thread coupling shaft makes calibrate AE sensor be close to stretching bar, ensures the coupling effect of calibrate AE sensor and stretching bar.When loading test specimen, send transient stress wave, stress wave can be propagated by stretching bar, and accepted by calibrate AE sensor.So the design of this structure can complete normal load and the acoustic emission signal monitoring of drawing machine.
The utility model has following beneficial effect: the guided wave system structure of this special-purpose is simple, be convenient to install, can ensure that fixture is in same position all the time, avoid the appearance of eccentric phenomena, simultaneous temperature decay is fast, can not impact sensor, the pilot process decay that acoustical signal is transmitted is little, ensure that the accuracy requirement of acoustic emission monitor(ing).So acoustic emission monitor(ing) can be carried out in uniaxial tension high-temperature creep injury process, facilitate the application of acoustic emission in metallic high temperature creep impairment field.
Accompanying drawing explanation
Fig. 1 is the utility model scheme of installation.
Fig. 2 is lower connecting-piece structure schematic diagram.
In figure: 1-jig main body, 2-wedge shape clamps, 3-wedge-shaped slot, 4-connecting rod, 5-stretching bar, 6-rotary handle, 7-set nut, web member under 8-, 81-pin hole, 82-sensor signal lines fairlead, 9-fixed pin, the upper clamp nut of 10-, 11-double thread coupling shaft, clamp nut under 12-, 13-drawing machine base, 14-bolt, 15-worktable, 16-register pin.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
For a guided wave mechanism for uniaxial tension high-temerature creep acoustic emission monitor(ing), comprise lower clamp mechanism and bindiny mechanism, one-piece construction as shown in Figures 1 and 2.Its installation steps are as follows: the installation first carrying out lower clamp mechanism, wedge shape pincers 2 are put into the wedge-shaped slot 3 of jig main body 1, the binding clip both sides articulated linkage 4 respectively of wedge shape pincers 2, the other end of this connecting rod 4 is hinged on wedge-shaped slot 3, and the jaw folding of wedge shape pincers 2 is subject to the control of connecting rod 4; The bottom that upper end and the wedge shape of stretching bar 5 clamp 2 is fixedly connected with, rotary handle 6 is threaded on stretching bar 5, fix further by set nut 7, handle 6 rotarily drives stretching bar 5 along guide thread and moves up and down, make wedge shape pincers 2 be close to wedge-shaped slot 3 face to slide up and down, locking test specimen, namely completes the installation of lower clamp mechanism.Then lower clamp mechanism and drawing machine base 13 are linked together, lower clamp mechanism is fixed on drawing machine worktable 15.Stretching bar 5 is inserted in lower web member 8, the structure of lower web member 8 as shown in Figure 2, because the below of stretching bar 5 is provided with cotter slot, and the top of lower web member 8 is also provided with pin hole 81, the two is fixed together by available fixed pin 9, calibrate AE sensor is placed in lower web member 8, and the sidewall of lower web member 8 is also provided with sensor signal lines fairlead 82, and above-mentioned parts has connected and composed guided wave structure formed part of the present utility model.Register pin 16 is inserted in the center pit of worktable 15, drawing machine base 13 is put on worktable 15 and makes register pin 16 enter in endoporus, use bolt 14 to be fixed on worktable 15 by base 13.When testing, calibrate AE sensor is placed in lower web member 8, acoustic emission signal line is drawn from fairlead 82, the guided wave structure formed part of vertical placement, double thread coupling shaft 11 two ends are threaded with lower web member 8 and drawing machine base 13 respectively, fastening in order to connect further, clamp nut 10 and lower clamp nut 12 on the two ends up and down of double thread coupling shaft 11 have also been threaded, screw double thread coupling shaft 11, complete whole installation process.
The course of work is as follows: couplant is coated in the lower surface of stretching bar 5, calibrate AE sensor is fitted on the lower surface of stretching bar 5, screwing double thread coupling shaft 11 makes calibrate AE sensor and stretching bar 11 lower surface fully fit, to ensure the propagation of acoustic emission signal, sensor signal lines is drawn by the fairlead 82 on lower web member.After whole process completes, the loading of creep experiments under high temperature can be carried out, realize the acoustic emission monitor(ing) to creep process.
Claims (1)
1., for a guided wave mechanism for uniaxial tension high-temerature creep acoustic emission monitor(ing), comprise lower clamp mechanism and bindiny mechanism; It is characterized in that: described lower clamp mechanism, comprise jig main body, wedge shape pincers, wedge-shaped slot, stretching bar and handle, wherein jig main body arranges wedge-shaped slot, the binding clip both sides of wedge shape pincers are hinged in wedge-shaped slot by connecting rod symmetry, the bottom of wedge shape pincers is fixedly connected with the top of stretching bar, this stretching bar has also been threaded handle, and the below of stretching bar arranges cotter slot; Described bindiny mechanism, comprise lower web member and double thread coupling shaft, web member is wherein descended to be hollow cylinder, pin hole is had above its sidewall, the upper end of lower web member is fixedly connected with by the lower end of fixed pin with stretching bar, lower web member is built-in with calibrate AE sensor, and its side also has calibrate AE sensor signal wire fairlead, and the lower end of lower web member is provided with internal thread; All there is external thread at described double end coupling shaft two ends, and its upper end is threaded with the end opening of lower web member, and lower end is connected with the internal thread of drawing machine base, and drawing machine base is bolted on worktable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520230873.1U CN204536134U (en) | 2015-04-16 | 2015-04-16 | A kind of guided wave mechanism for the acoustic emission monitor(ing) of uniaxial tension high-temerature creep |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520230873.1U CN204536134U (en) | 2015-04-16 | 2015-04-16 | A kind of guided wave mechanism for the acoustic emission monitor(ing) of uniaxial tension high-temerature creep |
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| Publication Number | Publication Date |
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| CN204536134U true CN204536134U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520230873.1U Expired - Fee Related CN204536134U (en) | 2015-04-16 | 2015-04-16 | A kind of guided wave mechanism for the acoustic emission monitor(ing) of uniaxial tension high-temerature creep |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289952A (en) * | 2016-09-27 | 2017-01-04 | 长安大学 | A kind of stretching-machine lower beam self-locking device |
| CN110726667A (en) * | 2019-11-19 | 2020-01-24 | 辽宁科技大学 | Method and device for measuring interlayer bonding strength of composite laminated plate |
| CN115629134A (en) * | 2022-10-24 | 2023-01-20 | 哈尔滨工业大学 | Acoustic emission testing device |
-
2015
- 2015-04-16 CN CN201520230873.1U patent/CN204536134U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289952A (en) * | 2016-09-27 | 2017-01-04 | 长安大学 | A kind of stretching-machine lower beam self-locking device |
| CN106289952B (en) * | 2016-09-27 | 2023-03-10 | 长安大学 | Draw machine lower beam self-lock device |
| CN110726667A (en) * | 2019-11-19 | 2020-01-24 | 辽宁科技大学 | Method and device for measuring interlayer bonding strength of composite laminated plate |
| CN115629134A (en) * | 2022-10-24 | 2023-01-20 | 哈尔滨工业大学 | Acoustic emission testing device |
| CN115629134B (en) * | 2022-10-24 | 2023-04-28 | 哈尔滨工业大学 | Acoustic emission testing device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20160416 |