CN201413312Y - Universal type acoustic emission test sensor fixing device - Google Patents
Universal type acoustic emission test sensor fixing device Download PDFInfo
- Publication number
- CN201413312Y CN201413312Y CN2009200817464U CN200920081746U CN201413312Y CN 201413312 Y CN201413312 Y CN 201413312Y CN 2009200817464 U CN2009200817464 U CN 2009200817464U CN 200920081746 U CN200920081746 U CN 200920081746U CN 201413312 Y CN201413312 Y CN 201413312Y
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- acoustic emission
- test sensor
- emission test
- master arm
- fixing device
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- Expired - Lifetime
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Abstract
The utility model provides a universal type acoustic emission test sensor fixing device which comprises a radial position adjusting mechanism, supporting mechanisms, bases, acoustic emission test sensor installing mechanisms and parallelism adjusting pieces. Each supporting mechanism comprises a main supporting arm and an auxiliary supporting arm, one end of the auxiliary supporting arm is fixedlyconnected or articulated with the main supporting arm, a ball head is arranged at the other end of each auxiliary supporting arm, a parallelism adjusting piece installing structure is arranged at theconnecting position between the main supporting arm and the auxiliary supporting arm, and each base is provided with a spherical hole. The assembling method of the fixing device is as follows: the main supporting arms of the two sets of supporting mechanisms are respectively connected with the two free ends of the radial position adjusting mechanism, and the connecting position is that the auxiliary supporting arms of the two sets of supporting mechanisms are respectively located at the inner sides of the main supporting arms and are symmetrically arrayed oppositely to a center line shaft ofthe radial position adjusting mechanism; the ball heads of the two auxiliary supporting arms are respectively located in the spherical holes of the two bases to form a universal type rotating pair, two sets of acoustic emission test sensor installing mechanisms are respectively arranged on the two bases, and two sets of parallelism adjusting pieces are respectively arranged on the two main supporting arms.
Description
Technical field
The utility model relates to the fixing device for acoustic emission test sensor that uses in the column test specimen mechanical test test of materials such as rock, concrete.
Background technology
In rock mechanics experiment, when the characteristics of Acoustic Emission of damage of rock process etc. was tested, employed acoustic emission test sensor did not still have special stationary installation, and experimental test generally adopts adhesive tape to twine or two kinds of fixed forms of bungee colligation at present.Because the acoustic emission test sensor diameter is usually between 5mm～15mm, and need with butter or vaseline etc. as couplant and test specimen coupling, this causes adhesive tape to twine and the fixed form of bungee colligation can not ensure that the depth of parallelism of acoustic emission test sensor end face and test specimen coupling surface reaches and the good coupling of test specimen, especially test specimen in irregular shape is difficult to fix especially.Moreover couplants such as butter or vaseline easily cause adhesive tape bonding reduction or inefficacy, and the test test specimen is radially expanded, and adhesive tape makes its stressed increase, even makes it cause certain damage easily to the bigger constraint of acoustic emission test sensor formation in the distortion; Though the bungee colligation is radially expanded tension elongation in the distortion at sample, but certain distortion takes place, but this fixed form very easily causes acoustic emission test sensor to roll, and is difficult to ensure that acoustic emission test sensor contacts with the good of test specimen.In addition, above-mentioned two kinds of fixed forms all need to carry out before the test preload, and can not adjust in process of the test, and extremely difficulty makes the accurate contraposition of acoustic emission test sensor.Also there is following problem in above-mentioned two kinds of fixed forms: (1) is difficult to ensure the stressed consistance of acoustic emission test sensor in the same batch of test specimen test, and very easily in test, form more false signal, caused very big difficulty for the analysis of test result, judgement.(2) very inconvenient to the installation of other deformation test sensors.
Summary of the invention
The purpose of this utility model is to provide a kind of fixing device for universal acoustic emission test sensor, to ensure that acoustic emission test sensor well contacts with the test specimen of different shape (rule is with irregular), improves testing efficiency and the accuracy and the authenticity that reach test.
Fixing device for universal acoustic emission test sensor described in the utility model comprises radially positioner, supporting mechanism, pedestal, acoustic emission test sensor installing mechanism and depth of parallelism adjustment part, and supporting mechanism, pedestal, acoustic emission test sensor installing mechanism and depth of parallelism adjustment part are two covers; Supporting mechanism comprises master arm and secondary sway brace, one end of secondary sway brace and master arm are connected or are hinged, the other end of secondary sway brace is provided with bulb, the junction of master arm and secondary sway brace is provided with depth of parallelism adjustment part mounting structure, and pedestal is provided with the spherical pore with the bulb of secondary sway brace coupling.The assembling mode of above-mentioned each parts or member: the master arm of two cover supporting mechanisms is connected with two free ends of positioner radially respectively, its connection orientation is to make the secondary sway braces of two cover supporting mechanisms lay respectively at the inboard of its master arm and with respect to the centerline axis symmetric offset spread of positioner radially, article two, the bulb of secondary sway brace lays respectively at and forms the universal type revolute pair in the spherical pore of two pedestals, two cover acoustic emission test sensor installing mechanisms are installed in respectively on two pedestals, and two cover depth of parallelism adjustment parts are installed in respectively on two master arms by the mounting structure of master arm setting.
The utility model is to the preferred following version of the parts that constitute above-mentioned fixing device for acoustic emission test sensor:
1, radially positioner comprises two elastic bodys and a screw rod, and two elastomeric ends are connected with the rigidity termination respectively, and described rigidity termination is provided with the screw with the screw rod coupling, and the screw on screw rod and the two rigidity terminations forms screw pair.Or radially positioner only is made of elastic body.
2, pedestal is rectangle or circular platform, and its underpart has slot, with the spherical pore of the bulb of secondary sway brace coupling the upper surface of pedestal is set; Adapt with the structure of pedestal, the acoustic emission test sensor installing mechanism comprise with pedestal on plate, acoustic emission test sensor fabricated section and the acoustic emission test sensor fixture of slot coupling; Described plate is provided with plate clip or plate fixing threaded hole, and plate is inserted in the slot of pedestal, fixes by clip or bolt and pedestal; Described acoustic emission test sensor fabricated section is the cylinder that has breach, itself and plate are connected or are integrated with plate, the external diameter coupling of its internal diameter and acoustic emission test sensor is (when implementing, can form the serial cylinder that satisfies the test needs according to the cylinder of transmission test sensor production different inner diameters); Described acoustic emission test sensor fixture is made up of the round and elastic sheet that has breach and clip or trip bolt, when acoustic emission test sensor pack into have the cylinder of breach after, the round and elastic sheet that has breach is enclosed within the notch part section of cylinder, by clip or trip bolt acoustic emission test sensor is fixed in the cylinder.
3, pedestal is rectangle or circular platform, and its underpart has the connection screw, is arranged on the upper surface of pedestal with the spherical pore of the bulb of secondary sway brace coupling; Adapt with the structure of pedestal, the acoustic emission test sensor installing mechanism comprise with pedestal on the thread segment that is connected screw coupling, acoustic emission test sensor fabricated section and acoustic emission test sensor fixture, described thread segment is installed in the connection screw of pedestal bottom, realize being connected by being threaded, described acoustic emission test sensor fabricated section is the cylinder that has breach, being connected or being integrated of itself and thread segment with thread segment, the external diameter of its internal diameter and acoustic emission test sensor coupling, described acoustic emission test sensor fixture is made up of the round and elastic sheet that has breach and clip or trip bolt.
4, depth of parallelism adjustment part is made up of three screws, the depth of parallelism adjustment part mounting structure that the junction of master arm and secondary sway brace is provided with by be arranged on the master arm two install screws and and master arm is hinged and installation sheet between two screws is formed, described installation sheet is provided with the installation screw.
The using method of fixing device for universal acoustic emission test sensor described in the utility model:
1, determines the quantity of acoustic emission test sensor and the installation site on test specimen according to test specimen shape and experimental test purpose, acoustic emission test sensor is installed in the fixing device for acoustic emission test sensor;
2, test specimen is placed testing machine load between the pressure head up and down, the acoustic emission test sensor that each cover is installed in fixing device for acoustic emission test sensor places the different two sides of intending the test position of test specimen respectively, makes acoustic emission test sensor be close to test specimen by positioner radially;
3, rotating base, make the end face and the test specimen coupled surface position almost parallel of the acoustic emission test sensor of installing in the fixing device for acoustic emission test sensor, to adjust to correct position with the hinged installation sheet of master arm then, transfer to the end face of calibrate AE sensor parallel by depth of parallelism adjustment part again with test specimen coupled surface position.
After each acoustic emission test sensor installation is adjusted and met the requirements, then can test need test test specimen by predetermined experimental test scheme.
The utlity model has following beneficial effect:
1, positioner contains elastic component because the bulb of secondary sway brace and the spherical pore of pedestal formation universal type revolute pair reach radially, fixing device for universal acoustic emission test sensor described in the utility model is applicable to the test specimen (regular shape or irregularly shaped) of different shape, in whole test process, can make acoustic emission test sensor be close to test specimen, and the acoustic emission test sensor end face of installing in the maintenance fixing device for acoustic emission test sensor and test specimen coupled surface are parallel to each other, thereby can guarantee the authenticity of test result, improve precision of test result.
2, since radially positioner contain elastic component, when test specimen is radially expanded in the test, can not increase the stressed of acoustic emission test sensor, easily ensure with the stressed consistance of batch test specimen calibrate AE sensor in test, not only can reduce false signal influences test result, also can improve the serviceable life of acoustic emission test sensor.
3, use fixing device for acoustic emission test sensor described in the utility model, be convenient to arrange acoustic emission test sensor in optional position, test specimen surface, also can arrange other deformation test sensors simultaneously, so that in same test process, same tested test specimen is obtained how different detecting informations
4, use fixing device for acoustic emission test sensor described in the utility model, can before and after test specimen being added in advance the contact load, carry out the installation of acoustic emission test sensor by arbitrary period, also can carry out position adjustments to acoustic emission test sensor in test.
5, easy to use, install fast, can improve testing efficiency.
Description of drawings
Fig. 1 is first kind of structural representation of fixing device for universal acoustic emission test sensor described in the utility model;
Fig. 2 is second kind of structural representation of fixing device for universal acoustic emission test sensor described in the utility model;
Fig. 3 is the third structural representation of fixing device for universal acoustic emission test sensor described in the utility model;
Fig. 4 is the synoptic diagram of the set depth of parallelism adjustment part mounting structure of the master arm in the fixing device for universal acoustic emission test sensor described in the utility model;
Fig. 5 is a kind of structural representation of the pedestal in the fixing device for universal acoustic emission test sensor described in the utility model and the assembly drawing of pedestal and secondary sway brace;
Fig. 6 is the vertical view of Fig. 5;
Fig. 7 is the right view of Fig. 5;
Fig. 8 is first kind of structural representation of the acoustic emission test sensor installing mechanism in the fixing device for universal acoustic emission test sensor described in the utility model;
Fig. 9 is the vertical view of Fig. 8;
Figure 10 is second kind of structural representation of the acoustic emission test sensor installing mechanism in the fixing device for universal acoustic emission test sensor described in the utility model;
Figure 11 is the vertical view of Figure 10;
Figure 12 is another structural representation of the pedestal in the fixing device for universal acoustic emission test sensor described in the utility model and the assembly drawing of pedestal and secondary sway brace;
Figure 13 is the cut-open view of Figure 12;
Figure 14 is the third structural representation of the acoustic emission test sensor installing mechanism in the fixing device for universal acoustic emission test sensor described in the utility model;
Figure 15 is the pedestal among Figure 12 and the assembling synoptic diagram of the acoustic emission test sensor installing mechanism among Figure 14.
Among the figure, the 1-screw rod, 2-rigidity termination, 3-arc elastic body, the 4-master arm, 5-depth of parallelism adjustment part, 6-depth of parallelism adjustment part installation sheet, the secondary sway brace of 7-, the 8-pedestal, 9-acoustic emission test sensor installing mechanism, the 10-acoustic emission test sensor, the 11-test specimen, the semicircle elastic body of 12-, 13-depth of parallelism adjustment part is installed screw, the 14-bulb, the 15-slot, the 16-plate, 17-has the cylinder of breach, 18-has the round and elastic sheet of breach, 19-sensor clip, 20-plate clip, 21-plate fixing threaded hole, 22-sensor trip bolt, 23-connects screw, the 24-thread segment.
Embodiment
Below in conjunction with accompanying drawing, the concrete structure of fixing device for universal acoustic emission test sensor described in the utility model is described further.
In the present embodiment, the structure of fixing device for universal acoustic emission test sensor as shown in Figure 1, comprise radially positioner, supporting mechanism, pedestal 8, acoustic emission test sensor installing mechanism 9 and depth of parallelism adjustment part 5, supporting mechanism, pedestal, acoustic emission test sensor installing mechanism and depth of parallelism adjustment part are two covers.
Radially positioner as shown in Figure 1, comprise two arc elastic bodys 3 and a screw rod 1, article two, the elastomeric end of arc is connected with rigidity termination 2 respectively, and described rigidity termination is provided with the screw with the screw rod coupling, and the screw on screw rod and the two rigidity terminations forms screw pair.Supporting mechanism comprises master arm 4 and secondary sway brace 7 as shown in Figure 1; Master arm 4 usefulness Nitinols are made, its xsect is a rectangle, the junction of itself and secondary sway brace is provided with depth of parallelism adjustment part mounting structure, described depth of parallelism adjustment part mounting structure as shown in Figure 4, screws 13 are installed and with master arm is hinged and installation sheet 6 between two screws is formed, installation sheet 6 is provided with 1 installation screw 13 by being arranged on the master arm two; Secondary sway brace 7 usefulness Nitinols are made, and its xsect is circular, and the one end is fixed on the master arm by being threaded, and its other end is provided with bulb 14 (as Fig. 1, shown in Figure 7).Pedestal 8 is as Fig. 5, Fig. 6, shown in Figure 7, and its global shape is a rectangular platform, and the bottom of pedestal has slot 15, with the spherical pore of the bulb of secondary sway brace coupling the upper surface of pedestal is set.Acoustic emission test sensor installing mechanism 9 is as Fig. 8, shown in Figure 9, comprise with pedestal on plate 16, the cylinder 17 that has breach, the round and elastic sheet 18 that has breach and the clip 19 of slot coupling, described plate 16 is provided with plate clip 20, the non-notch end and the plate 16 of cylinder 17 are connected, its jagged end is a free end, the round and elastic sheet 18 that has breach is enclosed within the notch part section of cylinder, by clip 19 acoustic emission test sensor 10 is fixed in the cylinder 17.Depth of parallelism adjustment part 5 is made up of three screws.
The assembling mode of above-mentioned parts and member: the master arm 4 of two cover supporting mechanisms is connected with the free end of two arc elastic bodys 3 of positioner radially respectively, and its connection orientation is to make two secondary sway braces 7 lay respectively at the inboard of its master arm and with respect to the centerline axis symmetric offset spread of positioner radially; Article two, the bulb 14 of secondary sway brace lays respectively at and forms the universal type revolute pair in the spherical pore of two pedestals, the plates 16 of two cover acoustic emission test sensor installing mechanisms are inserted into respectively in the slot 15 of two pedestals and are fixing by plate clip 20, and the screws of forming two cover depth of parallelism adjustment parts 5 are not installed in the screw 13 of the set depth of parallelism adjustment part mounting structure of two master arms 4.
Embodiment 2
In the present embodiment, the structure of fixing device for universal acoustic emission test sensor as shown in Figure 2, comprise radially positioner, supporting mechanism, pedestal 8, acoustic emission test sensor installing mechanism 9 and depth of parallelism adjustment part 5, supporting mechanism, pedestal, acoustic emission test sensor installing mechanism and depth of parallelism adjustment part are two covers.
Difference from Example 1 is: 1, radially positioner is a semicircle elastic body 12 (as shown in Figure 2); 2, pedestal 8 as shown in Figure 12 and Figure 13, its underpart has and connects screw 23; Acoustic emission test sensor installing mechanism 9 as shown in figure 14, comprise with pedestal on the thread segment 24 that is connected screw coupling, have the cylinder 17 of breach, have the round and elastic sheet 18 and the trip bolt 22 of breach, thread segment 24 is installed in the connection screw 23 of pedestal bottom, by be connected (as shown in figure 15) of be threaded realization and pedestal 8, the cylinder 17 that has breach is integrated with thread segment 24, its jagged end is a free end, the round and elastic sheet 18 that has breach is enclosed within the notch part section of cylinder, by trip bolt 22 acoustic emission test sensor 10 is fixed in the cylinder 17.
In the present embodiment, the structure of fixing device for universal acoustic emission test sensor as shown in Figure 3, comprise radially positioner, supporting mechanism, pedestal 8, acoustic emission test sensor installing mechanism 9 and depth of parallelism adjustment part 5, supporting mechanism, pedestal, acoustic emission test sensor installing mechanism and depth of parallelism adjustment part are two covers.
Difference from Example 1 is: 1, radially positioner is as shown in Figure 3, comprise straight-bar shape elastic body 3 and a screw rod 1, article two, the elastomeric end of straight-bar shape is connected with rigidity termination 2 respectively, described rigidity termination is provided with the screw with the screw rod coupling, and the screw on screw rod and the two rigidity terminations forms screw pair; 2, secondary sway brace 7 is hinged with master arm 4; 3, acoustic emission test sensor installing mechanism 9 is as Figure 10, shown in Figure 11, comprise with pedestal on plate 16, the cylinder 17 that has breach, the round and elastic sheet 18 that has breach and the trip bolt 22 of slot coupling, described plate 16 is provided with four plate fixing threaded holes 21, plate is by in the slot 15 that is bolted to pedestal, cylinder 17 is integrated with plate 16, its jagged end is a free end, the round and elastic sheet 18 that has breach is enclosed within the notch part section of cylinder, by trip bolt 22 acoustic emission test sensor 10 is fixed in the cylinder 17.
Claims (8)
1, a kind of fixing device for universal acoustic emission test sensor, it is characterized in that comprising radially positioner, supporting mechanism, pedestal (8), acoustic emission test sensor installing mechanism (9) and depth of parallelism adjustment part (5), supporting mechanism, pedestal (8), acoustic emission test sensor installing mechanism (9) and depth of parallelism adjustment part (5) are two covers;
Supporting mechanism comprises master arm (4) and secondary sway brace (7), one end of secondary sway brace and master arm are connected or are hinged, the other end of secondary sway brace is provided with bulb (14), the junction of master arm and secondary sway brace is provided with depth of parallelism adjustment part mounting structure, and pedestal is provided with the spherical pore with the bulb of secondary sway brace coupling;
The master arm (4) of two cover supporting mechanisms is connected with two free ends of positioner radially respectively, its connection orientation is to make the secondary sway braces (7) of two cover supporting mechanisms lay respectively at the inboard of its master arm and with respect to the centerline axis symmetric offset spread of positioner radially, article two, the bulb of secondary sway brace (14) lays respectively at and forms the universal type revolute pair in the spherical pore of two pedestals, two cover acoustic emission test sensor installing mechanisms (9) are installed in respectively on two pedestals (8), and two cover depth of parallelism adjustment parts (5) are installed in respectively on two master arms (4) by the mounting structure of master arm setting.
2, fixing device for universal acoustic emission test sensor according to claim 1, it is characterized in that radially positioner comprises two elastic bodys (3) and a screw rod (1), article two, an elastomeric end is connected with rigidity termination (2) respectively, described rigidity termination is provided with the screw with the screw rod coupling, and the screw on screw rod and the two rigidity terminations forms screw pair.
3, fixing device for universal acoustic emission test sensor according to claim 1 is characterized in that radially positioner is made of elastic body (12).
4, according to the described fixing device for universal acoustic emission test sensor of arbitrary claim in the claim 1 to 3, it is characterized in that the bottom of pedestal (8) has slot (15), be arranged on the upper surface of pedestal with the spherical pore of the bulb of secondary sway brace coupling;
Acoustic emission test sensor installing mechanism (9) comprise with pedestal on the plate (16) of slot coupling, acoustic emission test sensor fabricated section and acoustic emission test sensor fixture, described plate (16) is provided with plate clip (20) or plate fixing threaded hole (21), described acoustic emission test sensor fabricated section is the cylinder (17) that has breach, itself and plate (16) are connected or are integrated with plate (16), the external diameter of its internal diameter and acoustic emission test sensor (10) coupling, described acoustic emission test sensor fixture is made up of the round and elastic sheet (18) that has breach and clip (19) or trip bolt (22).
5, according to the described fixing device for universal acoustic emission test sensor of arbitrary claim in the claim 1 to 3, the bottom that it is characterized in that pedestal (8) has and connects screw (23), with the spherical pore of the bulb coupling of secondary sway brace the upper surface of pedestal is set;
Acoustic emission test sensor installing mechanism (9) comprise with pedestal on the thread segment (24), acoustic emission test sensor fabricated section and the acoustic emission test sensor fixture that are connected screw coupling, described acoustic emission test sensor fabricated section is the cylinder (17) that has breach, itself and thread segment (24) are connected or are integrated with thread segment (24), the external diameter of its internal diameter and acoustic emission test sensor (10) coupling, described acoustic emission test sensor fixture is made up of the round and elastic sheet (18) that has breach and clip (19) or trip bolt (22).
6, according to the described fixing device for universal acoustic emission test sensor of arbitrary claim in the claim 1 to 3, it is characterized in that depth of parallelism adjustment part (5) is made up of three screws, on the master arm two install screws (13) to the depth of parallelism adjustment part mounting structure that the junction of master arm and secondary sway brace is provided with and with master arm is hinged and installation sheet (6) between two screws is formed, described installation sheet (6) is provided with installation screw (13) by being arranged on.
7, fixing device for acoustic emission test sensor according to claim 4, it is characterized in that depth of parallelism adjustment part (5) is made up of three screws, on the master arm two install screws (13) to the depth of parallelism adjustment part mounting structure that the junction of master arm and secondary sway brace is provided with and with master arm is hinged and installation sheet (6) between two screws is formed, described installation sheet (6) is provided with installation screw (13) by being arranged on.
8, fixing device for acoustic emission test sensor according to claim 5, it is characterized in that depth of parallelism adjustment part (5) is made up of three screws, on the master arm two install screws (13) to the depth of parallelism adjustment part mounting structure that the junction of master arm and secondary sway brace is provided with and with master arm is hinged and installation sheet (6) between two screws is formed, described installation sheet (6) is provided with installation screw (13) by being arranged on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200817464U CN201413312Y (en) | 2009-06-15 | 2009-06-15 | Universal type acoustic emission test sensor fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200817464U CN201413312Y (en) | 2009-06-15 | 2009-06-15 | Universal type acoustic emission test sensor fixing device |
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| Publication Number | Publication Date |
|---|---|
| CN201413312Y true CN201413312Y (en) | 2010-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200817464U Expired - Lifetime CN201413312Y (en) | 2009-06-15 | 2009-06-15 | Universal type acoustic emission test sensor fixing device |
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| CN (1) | CN201413312Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571516B (en) * | 2009-06-15 | 2011-06-08 | 四川大学 | Fixing device for universal acoustic emission test sensor |
| CN102253124A (en) * | 2011-04-21 | 2011-11-23 | 北京航空航天大学 | General fixing device for probe of acoustic emission detection apparatus |
| CN105822299A (en) * | 2016-05-04 | 2016-08-03 | 中国科学院武汉岩土力学研究所 | Rock acoustic wave test simulated experimental device and method based on fluid environment |
-
2009
- 2009-06-15 CN CN2009200817464U patent/CN201413312Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571516B (en) * | 2009-06-15 | 2011-06-08 | 四川大学 | Fixing device for universal acoustic emission test sensor |
| US8966982B2 (en) | 2009-06-15 | 2015-03-03 | Sichuan University | Universal multipurpose sensor fixing device |
| CN102253124A (en) * | 2011-04-21 | 2011-11-23 | 北京航空航天大学 | General fixing device for probe of acoustic emission detection apparatus |
| CN102253124B (en) * | 2011-04-21 | 2012-09-05 | 北京航空航天大学 | General fixing device for probe of acoustic emission detection apparatus |
| CN105822299A (en) * | 2016-05-04 | 2016-08-03 | 中国科学院武汉岩土力学研究所 | Rock acoustic wave test simulated experimental device and method based on fluid environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100224 Effective date of abandoning: 20090615 |