CN117740536A - Test device and test method for detecting static strength of stator blade - Google Patents
Test device and test method for detecting static strength of stator blade Download PDFInfo
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- CN117740536A CN117740536A CN202311627368.6A CN202311627368A CN117740536A CN 117740536 A CN117740536 A CN 117740536A CN 202311627368 A CN202311627368 A CN 202311627368A CN 117740536 A CN117740536 A CN 117740536A
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- 238000012360 testing method Methods 0.000 title claims abstract description 95
- 230000003068 static effect Effects 0.000 title claims abstract description 23
- 238000010998 test method Methods 0.000 title abstract description 7
- 238000001514 detection method Methods 0.000 claims description 45
- 238000013461 design Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 13
- 238000004458 analytical method Methods 0.000 claims description 12
- 238000007405 data analysis Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
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- 238000012669 compression test Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 9
- 238000009659 non-destructive testing Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
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Abstract
The invention discloses a test device and a test method for detecting static strength of a stator blade, wherein the test device comprises a bottom plate, a first supporting plate and a second supporting plate are arranged on the bottom plate, and a stator blade sample is arranged between the first supporting plate and the second supporting plate; the stator blade sample is provided with a first connecting part and a second connecting part, the first connecting part is in contact with the first supporting plate, the second connecting part is connected with the second supporting plate, a bevel edge part is arranged between the first connecting part and the second connecting part, and a pressing clamping assembly is arranged on the bevel edge part, so that the stator blade sample has the beneficial effects that: through the test device, the static force test can be performed on the perfect stator blade sample structure, the stator blade structure is guaranteed to bear the effect of a steady state force, slippage and dislocation cannot occur, the sample stress is uniform, the test result is accurate, and a powerful support is provided for further researching the mechanical properties of the composite stator blade used by the aerospace structure.
Description
Technical Field
The invention relates to a test device and a test method for detecting static strength of a stator blade.
Background
Composite stator blades are typically mounted in the casing of an aircraft engine fan, the weight reduction of which plays a vital role in the weight reduction of the aircraft engine and even of the whole aircraft structure. The stator blade is changed from a high-temperature resistant alloy material into a composite material, the weight of the stator blade is reduced by more than 200 percent with the same ratio, and the stator blade has the advantages of high specific strength, high specific modulus, integrated structure and function, fatigue resistance project and the like, and is generally used in a low-temperature area (not more than 300 ℃) of an engine fan. The aeroengine stator blade mainly bears the carding and diffusion functions of the engine intake air flow in the casing, the received acting force is mainly pneumatic load, the blade root and the blade tip of the stator blade are fixed, the middle section of the blade body is required to bear larger pneumatic pressure, the characteristics of deformation, rebound and the like of the blade in the forming process are larger due to the anisotropy of the composite material, the integral mechanical property of the blade is seriously influenced by the internal nondestructive quality and the layering structure, and the relationship between the blade body bearing capacity and design load and ultimate load safety margin is characterized and evaluated, so that a test device and a test method for detecting the static strength of the stator blade are required to solve the problems.
Disclosure of Invention
The invention aims to provide a test device and a test method for detecting static strength of a stator blade, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the test device for detecting the static strength of the stator blade comprises a bottom plate, wherein a first supporting plate and a second supporting plate are arranged on the bottom plate, and a stator blade sample is arranged between the first supporting plate and the second supporting plate;
the stator blade sample is provided with first connecting portion, second connecting portion, first connecting portion and first backup pad contact, the second connecting portion is connected with the second backup pad, be provided with hypotenuse portion between first connecting portion, the second connecting portion, be provided with down clamping assembly on the hypotenuse portion for be convenient for exert pressure to hypotenuse portion centre gripping.
As an improvement of the technical scheme, the pressing clamping assembly comprises a connecting plate A and a connecting plate B;
the connecting plate A and the connecting plate B are provided with fixing holes, the fixing holes penetrate through the connecting plate A and the connecting plate B, bolts are arranged in the fixing holes, and nuts matched with each other are arranged on the bolts.
As the improvement of the technical scheme, the connecting plate A is provided with the fixing rod, the fixing rod is in threaded connection with the connecting plate A, the connecting rod is arranged on the fixing rod, the connecting rod is provided with the positioning hole, and the positioning hole is connected with the clamp at the output end of the mechanical testing machine through the bolt.
As an improvement of the technical scheme, the connecting plate A is provided with the arc-shaped surface A, the connecting plate B is provided with the arc-shaped surface B, and the arc-shaped surface A and the arc-shaped surface B are matched with the bevel edge part.
As an improvement of the technical scheme, the first supporting plate is provided with a supporting inclined plane, and the first connecting part is attached to the supporting inclined plane.
As an improvement of the technical scheme, the second supporting plate is provided with a connecting surface, the second connecting part is provided with a connecting convex strip, and the connecting convex strip is matched with the connecting surface.
As an improvement of the technical scheme, two groups of connecting holes A are formed in the connecting surface, two groups of connecting holes B are formed in the connecting convex strips, and the positions of the two groups of connecting holes A are matched with the positions of the two groups of connecting holes B;
the connecting holes A and B are connected through bolts.
As an improvement of the technical scheme, a reinforcing rib is arranged between the second supporting plate and the bottom plate.
A detection method of a test device for detecting static strength of stator blades comprises the following steps:
s1, sample installation:
connecting the stator blade sample on the second supporting plate, and enabling the connecting plates A and B to be connected and wrap the bevel edge part of the stator blade sample;
s2, power connection:
aligning the positioning hole on the connecting rod with an output end clamp of the mechanical testing machine, and positioning through a bolt;
s3, intensity pre-detection:
after checking that the state of a stator blade sample is normal, carrying out a compression strength test, carrying out a compression test at the output end of a mechanical testing machine at the speed of 5N/s, loading to 30% of a design load, maintaining the load for 5s, and unloading to carry out a pre-test;
s4, intensity detection:
if S3, in the strength pre-detection, the state of the stator blade sample is normal, and the equipment connection of the mechanical testing machine is normal, the test is formally carried out, and after the output end of the mechanical testing machine is loaded and compressed to 20% of the design load at the speed of 5N/S, the load is kept for 1min; keeping the loading rate unchanged, taking 20% of the design load as loading stages, keeping the load for 1min in each stage, loading to 100% of the design load, and keeping the load for 5min; unloading according to the loading step; continuously collecting strain in the test process, stopping stress collection after unloading is completed for 1min, photographing in real time in the test process, and repeating S1 and sample installation, S2 and power connection, and S3 and strength pre-detection until connection is normal if the state of a stator blade sample is normal and the connection of mechanical tester equipment is abnormal in S3 and strength pre-detection;
s5, sample analysis:
after the S4, the strength detection is finished, the connecting rod is detached from the mechanical testing machine, nondestructive flaw detection is carried out on the stator blade sample, and meanwhile data analysis is carried out to judge whether the test load meets the load requirement;
s6, intensity limit detection:
when S5, after sample analysis is completed, repeating S2 and power connection, carrying out limit load test, wherein the output end of the mechanical testing machine takes 5N/S as a loading rate, slowly applying a force load from zero until the test piece is damaged or the load cannot be continuously loaded, and recording limit load data;
s7, sample re-analysis:
and S6, after the strength limit detection is finished, removing the connecting rod from the mechanical testing machine, carrying out nondestructive flaw detection on the stator blade sample, analyzing the damage mode of the stator blade sample, and carrying out data analysis.
As an improvement of the technical scheme, in S4 and intensity detection, if the stator blade sample is damaged, the sample directly enters S7 and is subjected to sample re-analysis.
Compared with the prior art, the invention has the beneficial effects that:
in the process of testing the stator blade sample, a first connecting part of the stator blade sample is contacted with a first supporting plate, a second connecting part of the stator blade sample is connected with a second supporting plate, a pressing clamping assembly is connected to a bevel edge part at the same time, then the pressing clamping assembly is connected with a conveying end of an external mechanical testing machine, the mechanical testing machine outputs pressure, records and analyzes various numerical values, and carries out nondestructive testing at the same time, and then only the pressing clamping assembly is detached from the mechanical testing machine during each analysis;
by the aid of the test device, a perfect stator blade sample structure can be subjected to static test, the stator blade structure is guaranteed to bear the effect of a steady state force, slip and dislocation cannot occur, the sample is stressed uniformly, the test result is accurate, powerful support is provided for further researching the mechanical properties of composite material stator blades used by aerospace structures, and the test device has a slightly great scientific significance for development of stator blades used by aerospace engines and national development of autonomous controllable materials and structural design war;
the test device can be used for completing experimental tests of design load, limit load and damage load of the stator blade sample, the stator blade sample does not need to be removed from a test tool in the nondestructive testing process, the detection method is rapid and efficient, the detection cost is low, the detection result is more accurate, standard support is provided for detecting the structure of the stator blade sample, and the nondestructive testing device has good use value.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the base plate of the present invention;
FIG. 3 is a schematic view of a pressing down clamp assembly according to the present invention;
FIG. 4 is another angular schematic view of the support plate B of the present invention;
FIG. 5 is a front view of the present invention;
fig. 6 is a schematic structural view of a stator vane sample.
In the figure: 10. pressing down the clamping assembly; 11. a connecting rod; 111. positioning holes; 12. a fixed rod; 13. a connecting plate A; 131. an arc-shaped surface A; 132. a fixing hole; 14. a connecting plate B; 141. an arc-shaped surface B; 20. a bottom plate; 21. a first support plate; 211. a support slope; 22. a second support plate; 221. reinforcing ribs; 222. a connection surface; 223. a connecting hole A; 30. stator blade samples; 31. a first connection portion; 32. a beveled edge portion; 33. a second connecting portion; 331. connecting convex strips; 332. and a connection hole B.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples:
as shown in fig. 1-6, the embodiment provides a test device for detecting static strength of a stator blade, which comprises a bottom plate 20, wherein a first support plate 21 and a second support plate 22 are arranged on the bottom plate 20, and a stator blade sample 30 is arranged between the first support plate 21 and the second support plate 22;
the stator blade sample 30 is provided with a first connecting portion 31 and a second connecting portion 33, the first connecting portion 31 is in contact with the first supporting plate 21, the second connecting portion 33 is connected with the second supporting plate 22, a bevel edge portion 32 is arranged between the first connecting portion 31 and the second connecting portion 33, and the bevel edge portion 32 is provided with a pressing clamping assembly 10 for clamping the bevel edge portion 32 so as to apply pressure conveniently.
In this embodiment, in the process of testing the stator blade sample 30, the first connection portion 31 of the stator blade sample 30 is contacted with the first support plate 21, the second connection portion 33 is connected with the second support plate 22, and meanwhile, the pressing clamping assembly 10 is connected to the bevel edge portion 32, and then, the pressing clamping assembly 10 is connected to the conveying end of an external mechanical testing machine, and the pressure is output through the mechanical testing machine, and each numerical value is recorded and analyzed, and meanwhile, nondestructive testing is performed, and then, only the pressing clamping assembly 10 needs to be detached from the mechanical testing machine during each analysis;
by the aid of the test device, a perfect stator blade sample 30 structure can be subjected to static test, the stator blade structure is guaranteed to bear the effect of a steady state force, slip and dislocation cannot occur, the sample is stressed uniformly, the test result is accurate, powerful support is provided for further researching the mechanical properties of composite material stator blades used by aerospace structures, and great scientific significance is provided for development of stator blades used by aerospace engines and national development of autonomous controllable materials and structural design strategies;
the test device can be used for completing the experimental tests of the design load, the limit load and the damage load of the stator blade sample 30, the stator blade sample 30 does not need to be removed from a test tool in the nondestructive testing process, the detection method is rapid and efficient, the detection cost is low, the detection result is more accurate, standard support is provided for the detection of the structure of the stator blade sample 30, and the nondestructive testing device has good use value.
Specifically, the pressing clamping assembly 10 includes a connection plate a13 and a connection plate B14;
the connecting plates A13 and B14 are provided with fixing holes 132, the fixing holes 132 penetrate through the connecting plates A13 and B14, bolts are arranged in the fixing holes 132, and nuts matched with each other are arranged on the bolts.
In this embodiment, the fixing holes 132 between the connection plates a13 and B14 are formed by respectively placing the connection plates a13 and B14 above and below the bevel edge portion 32 when wrapping the stator blade sample 30, and then inserting bolts into the fixing holes 132 and tightening the bolts with nuts;
of course, the webs a13, B14 are preferably placed in the middle of the beveled edge 32.
Specifically, the connecting plate A13 is provided with a fixing rod 12, the fixing rod 12 is in threaded connection with the connecting plate A13, the fixing rod 12 is provided with a connecting rod 11, the connecting rod 11 is provided with a positioning hole 111, and the positioning hole 111 is connected with a clamp at the output end of the mechanical testing machine through a bolt.
In this embodiment, the fixing rod 12 can be conveniently connected with the connecting plate a13, so that the output end of the mechanical testing machine can conveniently output pressure, and the detection procedure is completed.
Specifically, the connecting plate a13 is provided with an arc surface a131, the connecting plate B14 is provided with an arc surface B141, and the arc surfaces a131 and B141 are matched with the bevel edge portion 32.
In this embodiment, the matching of the arcuate surfaces a131, B141 with the beveled edge portion 32 can facilitate the improvement of stability in the detection process.
In this case, the arc surface a131 and the arc surface B141 are completely attached.
Specifically, the first support plate 21 is provided with a support inclined surface 211, and the first connection portion 31 is attached to the support inclined surface 211.
Specifically, the second support plate 22 is provided with a connection surface 222, the second connection portion 33 is provided with a connection protrusion 331, and the connection protrusion 331 is adapted to the connection surface 222.
Specifically, two groups of connection holes a223 are formed on the connection surface 222, two groups of connection holes B332 are formed on the connection convex strip 331, and the positions of the two groups of connection holes a223 and the two groups of connection holes B332 are matched;
the connecting holes A223 and B332 are connected through bolts.
In the embodiment, the bolt fit between the connecting hole A223 and the connecting hole B332 can facilitate the stability of the stator blade sample 30 in the detection process;
in this embodiment, the pressing clamping assembly 10 can achieve 100% of surface lamination of the stator blade sample 30, and meanwhile, the pressing clamping assembly and the second supporting plate 22 together limit and fix the stator blade sample 30 through bolt holes, and most of stress applied to the stator blade sample 30 is applied on a loading axis, so that the stator blade sample 30 is ensured not to slip;
of course, the supporting inclined plane 211 and the first connecting portion 31 can be attached to each other by 100%, and meanwhile, the supporting inclined plane 211 can be additionally provided with a gasket for adjusting the inclined intersection bottom and the supporting height, so that the stator blade samples 30 with different profiles can be adapted, the stator blade samples 30 can be tightly attached to the supporting inclined plane 211 when being stressed, the stator blade samples 30 can be conveniently and better positioned on a test device, and test procedures can be conveniently carried out.
Specifically, a reinforcing rib 221 is disposed between the second support plate 22 and the bottom plate 20.
A detection method of a test device for detecting static strength of stator blades comprises the following steps:
s1, sample installation:
attaching the stator blade sample 30 to the second support plate 22 and allowing the connection plates a13, B14 to be connected, wrapping around the beveled edge portion 32 of the stator blade sample 30;
s2, power connection:
aligning the positioning hole 111 on the connecting rod 11 with an output end clamp of the mechanical testing machine, and positioning through a bolt;
s3, intensity pre-detection:
after checking that the state of the stator blade sample 30 is normal, carrying out a compression strength test, carrying out a compression test at the output end of the mechanical testing machine at the speed of 5N/s, loading to 30% of the design load, maintaining the load for 5s, and unloading to carry out a pre-test;
s4, intensity detection:
if S3, in the strength pre-detection, the state of the stator blade sample 30 is normal, and the equipment connection of the mechanical testing machine is normal, the test is formally carried out, and after the output end of the mechanical testing machine is loaded and compressed to 20% of the design load at the speed of 5N/S, the load is kept for 1min; keeping the loading rate unchanged, taking 20% of the design load as loading stages, keeping the load for 1min in each stage, loading to 100% of the design load, and keeping the load for 5min; unloading to 0 according to the loading step; continuously collecting strain in the test process, stopping stress collection after unloading is completed for 1min, photographing in real time in the test process, and repeating S1 and sample installation, S2 and power connection and S3 and strength pre-detection until connection is normal if the state of the stator blade sample 30 is normal and the mechanical tester equipment connection is abnormal in the S3 and strength pre-detection;
s5, sample analysis:
after the S4, the strength detection is finished, the connecting rod 11 is detached from the mechanical testing machine, nondestructive inspection is carried out on the stator blade sample 30, and meanwhile data analysis is carried out to judge whether the test load meets the load requirement;
s6, intensity limit detection:
when S5, after sample analysis is completed, repeating S2 and power connection, carrying out limit load test, wherein the output end of the mechanical testing machine takes 5N/S as a loading rate, slowly applying a force load from zero until the test piece is damaged or the load cannot be continuously loaded, and recording limit load data;
s7, sample re-analysis:
and S6, after the strength limit detection is finished, the connecting rod 11 is detached from the mechanical testing machine, nondestructive inspection is carried out on the stator blade sample 30, the damage mode of the stator blade sample 30 is analyzed, and data analysis is carried out.
Specifically, in the detection of S4 and intensity, if the stator vane sample 30 is damaged, the sample directly goes to S7 and is analyzed again.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Test device of detection stator blade static strength, its characterized in that: the device comprises a bottom plate (20), wherein a first supporting plate (21) and a second supporting plate (22) are arranged on the bottom plate (20), and a stator blade sample (30) is arranged between the first supporting plate (21) and the second supporting plate (22);
stator blade sample (30) is provided with first connecting portion (31), second connecting portion (33), first connecting portion (31) and first backup pad (21) contact, second connecting portion (33) are connected with second backup pad (22), be provided with hypotenuse portion (32) between first connecting portion (31), second connecting portion (33), be provided with on hypotenuse portion (32) and push down clamping assembly (10) for be convenient for exert pressure to hypotenuse portion (32) centre gripping.
2. The test device for detecting static strength of stator blades according to claim 1, wherein: the pressing clamping assembly (10) comprises a connecting plate A (13) and a connecting plate B (14);
the novel connecting plate is characterized in that fixing holes (132) are formed in the connecting plate A (13) and the connecting plate B (14), the fixing holes (132) penetrate through the connecting plate A (13) and the connecting plate B (14), bolts are arranged in the fixing holes (132), and nuts matched with each other are arranged on the bolts.
3. The test device for detecting static strength of stator blades according to claim 2, wherein: be provided with dead lever (12) on connecting plate A (13), dead lever (12) and connecting plate A (13) threaded connection, be provided with connecting rod (11) on dead lever (12), locating hole (111) have been seted up on connecting rod (11), locating hole (111) are connected with the anchor clamps of mechanical testing machine output through the bolt.
4. A test device for detecting static strength of stator vanes according to claim 3, wherein: the connecting plate A (13) is provided with an arc-shaped surface A (131), the connecting plate B (14) is provided with an arc-shaped surface B (141), and the arc-shaped surface A (131), the arc-shaped surface B (141) and the bevel edge part (32) are matched.
5. The test device for detecting static strength of stator blades according to claim 1, wherein: the first support plate (21) is provided with a support inclined plane (211), and the first connecting portion (31) is attached to the support inclined plane (211).
6. The test device for detecting static strength of stator blades according to claim 1, wherein: the second support plate (22) is provided with a connecting surface (222), the second connecting part (33) is provided with a connecting convex strip (331), and the connecting convex strip (331) is matched with the connecting surface (222).
7. The test device for detecting static strength of stator blades as claimed in claim 6, wherein: two groups of connecting holes A (223) are formed in the connecting surface (222), two groups of connecting holes B (332) are formed in the connecting convex strips (331), and the positions of the two groups of connecting holes A (223) are matched with the positions of the two groups of connecting holes B (332);
the connecting holes A (223) and B (332) are connected through bolts.
8. The test device for detecting static strength of stator blades according to claim 1, wherein: reinforcing ribs (221) are arranged between the second supporting plate (22) and the bottom plate (20).
9. A detection method based on the test device for detecting static strength of stator blades according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:
s1, sample installation:
connecting the stator blade sample (30) to the second support plate (22) and connecting the connecting plates A (13) and B (14) to wrap the bevel edge part (32) of the stator blade sample (30);
s2, power connection:
aligning a positioning hole (111) on the connecting rod (11) with an output end clamp of the mechanical testing machine, and positioning through a bolt;
s3, intensity pre-detection:
after checking that the state of a stator blade sample (30) is normal, carrying out a compression strength test, carrying out a compression test at the output end of a mechanical testing machine at the speed of 5N/s, loading to 30% of a design load, maintaining the load for 5s, unloading, and carrying out a pre-test;
s4, intensity detection:
if S3, in the strength pre-detection, the stator blade sample (30) is in a normal state and the mechanical testing machine is in normal equipment connection, formally performing a test, and after the output end of the mechanical testing machine is loaded and compressed to 20% of the design load at a speed of 5N/S, keeping the load for 1min; keeping the loading rate unchanged, taking 20% of the design load as loading stages, keeping the load for 1min in each stage, loading to 100% of the design load, and keeping the load for 5min; unloading to 0 according to the loading step; continuously collecting strain in the test process, stopping stress collection after unloading is completed for 1min, photographing in real time in the test process, and repeating the steps of S1 and sample installation, S2 and power connection, S3 and strength pre-detection until connection is normal if the state of a stator blade sample (30) is normal and the mechanical tester equipment connection is abnormal in the step of S3 and strength pre-detection;
s5, sample analysis:
after the S4, the strength detection is finished, the connecting rod (11) is detached from the mechanical testing machine, nondestructive flaw detection is carried out on the stator blade sample (30), and meanwhile data analysis is carried out to judge whether the test load meets the load requirement;
s6, intensity limit detection:
when S5, after sample analysis is completed, repeating S2 and power connection, carrying out limit load test, wherein the output end of the mechanical testing machine takes 5N/S as a loading rate, slowly applying a force load from zero until the test piece is damaged or the load cannot be continuously loaded, and recording limit load data;
s7, sample re-analysis:
and S6, after the strength limit detection is finished, removing the connecting rod (11) from the mechanical testing machine, carrying out nondestructive flaw detection on the stator blade sample (30), analyzing the damage mode of the stator blade sample (30), and carrying out data analysis.
10. The method for detecting the static strength of the stator blade by using the test device according to claim 9, wherein the method comprises the following steps: in S4, in the intensity detection, if the stator blade sample (30) is damaged, the sample directly enters S7 and is analyzed again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311627368.6A CN117740536A (en) | 2023-11-30 | 2023-11-30 | Test device and test method for detecting static strength of stator blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311627368.6A CN117740536A (en) | 2023-11-30 | 2023-11-30 | Test device and test method for detecting static strength of stator blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117740536A true CN117740536A (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311627368.6A Pending CN117740536A (en) | 2023-11-30 | 2023-11-30 | Test device and test method for detecting static strength of stator blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117740536A (en) |
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2023
- 2023-11-30 CN CN202311627368.6A patent/CN117740536A/en active Pending
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