CN210665328U - High temperature ultrasonic fatigue in-situ testing instrument - Google Patents
High temperature ultrasonic fatigue in-situ testing instrument Download PDFInfo
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- CN210665328U CN210665328U CN201921515680.5U CN201921515680U CN210665328U CN 210665328 U CN210665328 U CN 210665328U CN 201921515680 U CN201921515680 U CN 201921515680U CN 210665328 U CN210665328 U CN 210665328U
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Abstract
The utility model relates to a tired normal position test instrument of high temperature supersound belongs to accurate scientific instrument field. The instrument consists of an integral frame module, a mechanical loading module, a high-temperature loading module and an in-situ monitoring module, wherein the integral frame module is used for accurately positioning each functional module and simultaneously providing stable support and effective vibration isolation; the mechanical loading module is used for synchronously applying static tensile/compressive loads to two ends of a tested sample, applying ultrasonic fatigue loads according to testing requirements and realizing accurate axial transposition; the high-temperature loading module is used for applying high-temperature load to the tested sample; the in-situ monitoring module is used for carrying out parallel in-situ monitoring on the surface deformation damage and the internal damage defect of the sample to be tested. The defect information of the tested sample can be synchronously represented and three-dimensionally reconstructed from inside to outside and from the surface to the inside. The method has the characteristics of complex loading environment, high testing precision and capability of dynamically monitoring the mechanical behavior and deformation damage mechanism of the material.
Description
Technical Field
The utility model relates to an accurate scientific instrument field, in particular to tired normal position test instrument of high temperature supersound. The high-temperature loading of the tested material sample is realized in vacuum or inert gas atmosphere, and the synchronous characterization and three-dimensional reconstruction of the defect information of the tested sample from inside to outside, from surface to inside can be realized. Provides a reliable means for the fatigue performance and deformation damage mechanism research of materials under the action of high temperature and ultrasonic load in the fields of aerospace, equipment manufacturing and the like.
Background
The method is an important means for obtaining the service performance of the material at high temperature and exploring the fatigue performance evolution rule by combining an in-situ monitoring means and developing a force thermal coupling fatigue test. In the fields of aerospace, equipment manufacturing and the like, some key structural materials such as turbine blades of aero-engines, pistons of automobile engines and the like are often in service under the working conditions of high temperature and high frequency, fatigue failure sometimes occurs, and serious economic loss is caused to the country. How to realize high-precision loading of a high-temperature field and high-frequency mechanical load, simulating that a material is close to an actual service working condition, and carrying out in-situ monitoring on the material under the condition that the material is close to the actual service working condition by combining an in-situ monitoring device is a key for evaluating the high-temperature fatigue performance and service safety of the material.
Universal testing machines, ultrasonic fatigue testing machines, low-frequency fatigue testing machines, fatigue testing machines of integrated muffle furnaces and the like are relatively common material testing machines on the market at present, the testing machines are simple in structure and single in function, vacuum or inert gas atmosphere is difficult to construct, high-precision loading of a high-temperature field and high-frequency mechanical load of a tested sample cannot be realized, and in-situ monitoring of the tested sample is difficult to carry out in the testing process due to the lack of in-situ monitoring devices. The existing testing method is relatively single due to the existing material testing device, and the research on the fatigue performance and the deformation damage mechanism of the materials in the key fields of aviation, aerospace, automobiles and the like under the action of high temperature and ultrasonic fatigue is difficult to realize.
With the wide application of optical microscopic imaging technology, infrared thermal imaging technology, X-ray crystal diffraction technology and the like in the field of material micromechanical performance testing, the function of the in-situ mechanical testing technology based on parallel monitoring of various in-situ monitoring means in the research of high-temperature fatigue performance and deformation damage mechanisms of materials in the key field is more prominent. Such as: the CT scanning imaging technology and the optical microscopic imaging technology are adopted for synchronous representation, so that the internal three-dimensional morphology and the surface micro-area morphology of the tested sample can be visually obtained; the CT scanning imaging technology and the infrared thermal imaging technology are adopted for synchronous representation, and the three-dimensional shape of the internal damage of the tested sample and the global temperature distribution information of the sample scale distance section can be visually obtained.
In summary, it is necessary to develop a high-temperature ultrasonic fatigue in-situ test instrument by combining the existing in-situ monitoring technology in order to meet the important test requirements of key structural materials in the fields of national aerospace, equipment manufacturing and the like.
Disclosure of Invention
An object of the utility model is to provide a tired normal position test instrument of high temperature supersound remedies current test technique not enough. The utility model discloses the instrument adopts hydraulic pressure servo drive technique, electric servo drive technique, piezoelectricity supersound drive technique to combine resistance wire radiant heating technique, can found vacuum or inert gas atmosphere, realize the supersound fatigue test to being tested appearance under high temperature environment. Meanwhile, a high-depth-of-field microscopic imaging device, an infrared thermal imaging device and a CT scanning device are adopted, so that the defect information of the tested sample can be synchronously represented and three-dimensionally reconstructed from inside to outside and from the surface to the inside; the method is suitable for the important test requirements of key structural materials in the fields of national aerospace, equipment manufacturing and the like, and provides a reliable means for the research of fatigue performance and deformation damage mechanism under the action of high temperature and ultrasonic fatigue.
The above object of the utility model is realized through following technical scheme:
high-temperature ultrasonic fatigue in-situ test instrument, including whole frame module 1, mechanical loading module 2, in-situ monitoring module 3, high-temperature loading module 4, whole frame module 1 adopts four column structures, realize the firm support to mechanical loading module 2, in-situ monitoring module 3, high-temperature loading module 4, mechanical loading module 2 passes through the support shell of commercialization motor drive subassembly 40 respectively, the flange of last pneumatic cylinder 43 and last backup pad 9 in whole frame module 1, mounting platform 5 rigid connection, realize exerting static tensile/compression load to the both ends of the sample under test in step, in-situ monitoring module 3 passes through PMKD 67, fixing base 60, guide rail seat 61 and mounting bracket 58 respectively and mounting platform 5 in whole frame module 1, CT fixed plate II 14, stand connecting block 8, CT fixed plate I7 rigid connection, realize going on from inside to outside to the sample under test defect information, Synchronously representing and three-dimensionally reconstructing from the outside to the inside; the high-temperature loading module 4 is rigidly connected with the mounting platform 5 of the integral frame module 1 through an L-shaped support 75, and is connected with the upper ultrasonic probe 33 and the lower ultrasonic probe 35 in the mechanical loading module 2 through upper and lower movable sealing corrugated pipes 71 and 77 to construct vacuum or inert gas atmosphere to isolate oxygen, so that high-temperature loading of a sample to be tested is realized.
The mechanical loading module 2 comprises a hydraulic loading submodule 15, an ultrasonic loading submodule 16 and a sample transposition submodule 17, the ultrasonic loading submodule 16 realizes ultrasonic fatigue loading on a tested sample, and the hydraulic loading submodule 15 is respectively and rigidly connected with an expansion sleeve II 41 of the sample transposition submodule 17 and an expansion sleeve I38 of the ultrasonic loading submodule 16 through an upper piston rod 46 and a lower piston rod 47; the sample transposition submodule 17 is rigidly connected with the middle connecting rod 27 of the ultrasonic loading submodule 16 through the expansion sleeve III 42, and double-end synchronous static tensile load loading, ultrasonic fatigue load loading and axial accurate transposition of a tested sample are simultaneously realized in a test experiment.
The size ultrasonic systems of the upper and lower high- temperature connecting rods 23 and 22 in the ultrasonic loading sub-module 16 are matched, and longitudinal vibration is achieved at 20 kHz; symmetrically distributed H-shaped cooling channels are formed in the upper high-temperature connecting rod 23 and the lower high-temperature connecting rod 22, and the outlet/inlet of each cooling channel is arranged at a vibration displacement node of the cooling channel, so that the interference of a cooling water pipe on the vibration of the upper high-temperature connecting rod 23 and the lower high-temperature connecting rod 22 is reduced.
The in-situ monitoring module 3 comprises a three-dimensional infrared thermal imaging submodule 51, a high-depth-of-field microscopic imaging submodule 52 and a CT scanning imaging submodule 53, wherein two infrared thermal imaging devices 69 of the three-dimensional infrared thermal imaging submodule 51 are respectively arranged on an H-shaped mounting plate 62, so that the three-dimensional reconstruction of the global temperature information of a gauge length section of a tested sample is realized; the high depth of field microscopic imaging sub-module 52 is: the high depth of field microscopic imaging device 65 is fixed on the microscope mounting plate 64, the microscope mounting plate 64 is fixed on the microscope three-degree-of-freedom positioning platform 66, under the driving of the microscope three-degree-of-freedom positioning platform 66, the axial and radial positions of the high depth of field microscopic imaging device 65 relative to the tested sample are quickly and accurately adjusted, and the follow-up monitoring of the surface appearance and the defects of the gauge length central micro-area of the tested sample is realized; the CT scan imaging sub-module 53 is: the CT host 55 is fixed on a support plate 59, the support plate 59 is fixed on the CT three-degree-of-freedom positioning platform 54, the CT three-degree-of-freedom positioning platform 54 is fixed on a fixed seat 60, a high-resolution receiving plate 56 is fixed on a receiving plate Z-direction positioning platform 57, the receiving plate Z-direction positioning platform 57 is fixed on a mounting frame 58, and under the driving of the CT three-degree-of-freedom positioning platform 54, the axial position and the radial position of the CT host 55 relative to a tested sample are quickly and accurately adjusted; under the drive of the Z-direction positioning platform 57 of the receiving plate, the high-resolution receiving plate 56 is quickly and accurately adjusted relative to the axial direction of the tested sample, and the CT host 55 is matched with the high-resolution receiving plate 56 for use, so that the step-by-step scanning and imaging of the gauge length section of the tested sample are realized.
"H" type mounting panel 62 be connected with slider assembly I68, slider assembly I68 and the cooperation of guide rail assembly I63, guide rail assembly I63 and guide rail seat 61 rigid connection, "the processing has the screw hole on the H" type mounting panel 62, and the corresponding position processing of guide rail seat 61 has the blind hole, "H" type mounting panel 62 reciprocates along guide rail assembly I63 to realize through the bolt with the fixed of guide rail seat 61.
In the high-temperature loading module 4, the gas spring assembly 82 is rigidly connected with the flange of the upper dynamic seal corrugated pipe 71, so that the axial rotation freedom of the corrugated pipe is limited, and the corrugated pipe is prevented from being damaged by torsion.
In the high-temperature loading module 4, the rotary seal assembly I, II 87 and 91 comprises a seal ring I94, a seal ring assembly 95, a seal ring II 96, a seal shaft sleeve 97 and a seal flange 98, the seal ring assembly 95 is embedded into a seal groove of the shaft shoulder of the upper ultrasonic probe 33, the seal ring I94 is embedded into the seal groove of the seal flange 98, the seal ring II 96 is embedded into a seal groove on the flange of the upper movable seal corrugated pipe 71, and the rotary seal assembly I, II 87 and 91 are matched with the upper ultrasonic probe 33 and the lower ultrasonic probe 35 to realize rotary seal.
In the high-temperature loading module 4, the embedded quartz observation window assembly 89 is an independent module and is fixed on the outer wall of the vacuum cavity 72 through bolts; the embedded quartz observation window assembly 89 is composed of an inner layer of quartz glass and an outer layer of quartz glass, a gap is reserved between the inner layer of quartz glass and the outer layer of quartz glass, circulating cooling water is introduced to realize cooling, the bottom of the outer layer of quartz glass is abutted against the wall of the heating furnace 78, the inner diameter of the inner layer of quartz glass is larger than the outer diameter of the lens of the high-depth-of-field microscopic imaging device 65, and the lens of the high-depth-of-field microscopic imaging device 65 is inserted into the embedded quartz observation window assembly 89 during.
In the high-temperature loading module 4, the cavity supporting seat 74 is welded on the side wall of the vacuum cavity 72 and is rigidly connected with the sliding block assembly II 86 through a bolt, the sliding block assembly II 86 is matched with the guide rail assembly II 79, the guide rail assembly II 79 is rigidly connected with the L-shaped support 75 through a bolt, the L-shaped support 75 is rigidly connected with the mounting platform 5, and when a normal-temperature test is carried out, the vacuum cavity 72 moves along the guide rail to provide sufficient operating space for a tester.
The beneficial effects of the utility model reside in that:
1. and a multi-factor coupling modular design idea is adopted. The instrument consists of an integral frame module, a mechanical loading module, an in-situ monitoring module and a high-temperature loading module, wherein the mechanical loading module comprises a hydraulic loading submodule, an ultrasonic loading submodule and a sample transposition submodule, and the in-situ monitoring module comprises a three-dimensional infrared thermal imaging submodule, a high-depth-of-field microscopic imaging submodule and a CT scanning imaging submodule. The equipment is standardized and modularized, and is convenient to maintain.
2. The surface oxidation of the tested sample can be effectively prevented. The air (oxygen) in the vacuum cavity can be extracted by a two-stage vacuumizing mode of matching a mechanical pump (external device) with a molecular pump (external device) or inert gas is continuously introduced into the vacuum cavity to remove the air (oxygen), so that a vacuum or inert gas atmosphere is constructed, and the surface of the sample to be tested is prevented from being oxidized.
3. The actual service working condition of the material can be truly simulated. The utility model discloses a hydraulic pressure servo drive technique, electric servo drive technique, piezoelectricity supersound drive technique, resistance wire radiant heating technique can realize the actual working condition of being on active service of key field materials such as true simulation aviation, space flight and car to being tested appearance high temperature field and high frequency mechanical load's high accuracy loading.
4. And the parallel in-situ monitoring of the damage information in the sample can be realized. The utility model discloses integrated high depth of field microscopic imaging device, infrared thermal imaging device, CT scanning device can realize by interior and outside, by synchronous sign and the three-dimensional reconstruction in the surface to being tested appearance defect information, provide a reliable means for fatigue performance and deformation damage mechanism research under high temperature, the fatigue effect of supersound for key field materials such as aviation, space flight and car.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate example embodiments of the invention and together with the description serve to explain the invention without limitation.
Fig. 1 is a schematic view of the overall appearance structure of the present invention;
fig. 2 is a schematic structural diagram of an integral frame module according to the present invention;
fig. 3 is a schematic structural diagram of a mechanical loading module according to the present invention;
fig. 4 is a schematic structural diagram of the ultrasonic loading sub-module of the present invention;
fig. 5 is a schematic structural view of a sample indexing submodule according to the present invention;
fig. 6 is a schematic structural diagram of a hydraulic loading submodule according to the present invention;
fig. 7 is a schematic structural diagram of the in-situ monitoring module of the present invention;
fig. 8 is a schematic structural diagram of a CT scanning imaging sub-module according to the present invention;
fig. 9 is a schematic structural view of a three-dimensional infrared thermal imaging sub-module and a high depth-of-field microscopic imaging sub-module according to the present invention;
fig. 10 is a front view of the high temperature loading module of the present invention;
fig. 11 is a rear view of the high temperature loading module of the present invention;
FIG. 12 is a schematic structural view of the temperature measurement assembly of the present invention;
fig. 13 is a schematic structural view of a rotary seal assembly of the present invention;
fig. 14 is a distribution diagram of the vibration displacement and stress of the ultrasonic loading submodule according to the present invention;
FIG. 15 is a diagram illustrating the distribution of the vibration displacement and stress of the high temperature connecting rod according to the present invention;
fig. 16 is a schematic diagram of the parallel in-situ monitoring of the present invention;
FIG. 17 is a schematic view of the structure of the embedded quartz observation window assembly of the present invention;
FIG. 18 is a schematic diagram of the load loading and in-situ test of the present invention;
fig. 19 is a schematic view of the structure of an hourglass-shaped ultrasonic specimen.
In the figure: 1. an integral frame module; 2. a mechanical loading module; 3. an in-situ monitoring module; 4. a high temperature loading module; 5. Mounting a platform; 6. the upright post fixes the sleeve; 7. a CT fixing plate I; 8. a column connecting block; 9. an upper support plate; 10. locking the screw; 11. a lifting eye screw; 12. a column; 13. a cold air gun supporting plate; 14. a CT fixing plate II; 15. a hydraulic loading submodule; 16. an ultrasonic loading submodule; 17. a sample transposition submodule; 18. an intermediate connection plate; 19. a lower connector fixing plate I; 20. a lower nut; 21. a lower ultrasonic connector; 22. a lower high temperature connecting rod; 23. an upper high temperature link; 24. an upper connector fixing plate I; 25. an upper ultrasonic connector; 26. an ultrasonic transducer; 27. a middle connecting rod; 28. a force sensor; 29. a force sensor fixing plate; 30. an upper force transmission rod; 31. an upper connector fixing plate II; 32. screwing a nut; 33. an upper ultrasonic probe; 34. carrying out ultrasonic testing on a sample; 35. a lower ultrasonic probe; 36. a lower connector fixing plate II; 37. a lower dowel bar; 38. an expansion sleeve I; 39. a spline shaft; 40. a commercial motor drive assembly; 41. an expansion sleeve II; 42. expanding sleeve III; 43. an upper hydraulic cylinder; 44. an upper accumulator; 45. an upper valve plate assembly; 46. an upper piston rod; 47. a lower piston rod; 48. a lower valve plate assembly; 49. a lower accumulator; 50. a lower hydraulic cylinder; 51. a three-dimensional infrared thermal imaging sub-module; 52. a high depth of field microscopic imaging sub-module; 53. a CT scanning imaging sub-module; 54. a CT three-degree-of-freedom positioning platform; 55. a CT host; 56. a high resolution receiver plate; 57. receiving a Z-direction positioning platform of the board; 58. a mounting frame; 59. a support plate; 60. a fixed seat; 61. a guide rail seat; 62. an H-shaped mounting plate; 63. a guide rail component I; 64. a microscope mounting plate; 65. a high depth of field microscopic imaging device; 66. a microscope three-degree-of-freedom positioning platform; 67. fixing the bottom plate; 68. a sliding block component I; 69. an infrared thermal imaging device; 70. a refrigeration assembly; 71. an upper dynamic seal corrugated pipe; 72. a vacuum chamber; 73. a left quartz observation window; 74. a cavity supporting seat; 75. an L-shaped support; 76. a cavity door locker; 77. a lower dynamic seal bellows; 78. heating furnace; 79. a guide rail component II; 80. a front quartz observation window; 81. a vacuum pressure gauge; 82. a gas spring assembly; 83. a vacuum chamber door; 84. a cavity door handle; 85. a hinge; 86. a sliding block component II; 87. rotating the seal assembly I; 88. a right quartz observation window; 89. an embedded quartz observation window component; 90. a vacuum bellows assembly; 91. rotating the seal assembly II; 92. an infrared temperature detector I; 93. an infrared thermometer II; 94. a sealing ring I; 95. a seal ring assembly; 96. a sealing ring II; 97. sealing the shaft sleeve; 98. and (4) sealing the flange.
Detailed Description
The details of the present invention and its embodiments are further described below with reference to the accompanying drawings.
Referring to fig. 1 to 19, the high temperature ultrasonic fatigue in-situ testing instrument of the present invention comprises an integral frame module, a mechanical loading module, a high temperature loading module and an in-situ monitoring module. Wherein: the integral frame module is used for accurately positioning each functional module and simultaneously providing stable support and effective vibration isolation; the mechanical loading module is used for synchronously applying static tensile/compressive loads to two ends of a tested sample, applying ultrasonic fatigue loads according to testing requirements and realizing accurate axial transposition; the high-temperature loading module is used for applying high-temperature load to the tested sample; the in-situ monitoring module is used for carrying out parallel in-situ monitoring on the surface deformation damage and the internal damage defect of the sample to be tested. The utility model discloses towards aerospace, equip the great demand in the aspect of fields such as manufacturing to the mechanical properties test guarantee of key material, have that load environment is complicated, the measuring accuracy is high, can dynamic monitoring material mechanics action and the characteristics of deformation damage mechanism simultaneously.
Referring to fig. 1 to 13, the utility model discloses a fatigue normal position test instrument of high temperature supersound, including whole frame module 1, mechanical loading module 2, normal position monitoring module 3, high temperature loading module 4, whole frame module 1 adopts four column structures for the realization is to the firm support of mechanical loading module 2, normal position monitoring module 3, high temperature loading module 4, and provides accurate installation location and effectual vibration isolation and handles. The mechanical loading module 2 is rigidly connected with the upper support plate 9 and the mounting platform 5 in the integral frame module 1 through the support shell of the commercial motor drive assembly 40 and the connecting flange of the upper hydraulic cylinder 43, respectively, and is used for synchronously applying static tensile/compressive loads to two ends of a sample to be tested, applying ultrasonic fatigue loads according to test requirements, and realizing accurate axial transposition. The in-situ monitoring module 3 is rigidly connected with the mounting platform 5, the CT fixing plate II 14, the upright post connecting block 8 and the CT fixing plate I7 in the integral frame module 1 through a fixing bottom plate 67, a fixing seat 60, a guide rail seat 61 and a mounting frame 58 respectively, and is used for realizing synchronous characterization and three-dimensional reconstruction of the defect information of the tested sample from inside to outside and from outside to inside; the high-temperature loading module 4 is rigidly connected with the mounting platform 5 of the integral frame module 1 through an L-shaped support 75, and is connected with the upper ultrasonic probe 33 and the lower ultrasonic probe 35 in the mechanical loading module 2 through the upper dynamic sealing corrugated pipe 71 and the lower dynamic sealing corrugated pipe 77, so that vacuum or inert gas atmosphere can be constructed to isolate oxygen, and high-temperature loading of a sample to be tested is realized.
Referring to fig. 2, the utility model discloses a whole frame module 1 contains mounting platform 5, stand fixed sleeve 6, CT fixed plate I7, the stand connecting block 8, go up backup pad 9, locking screw 10, eyebolt 11, stand 12, cold wind gun backup pad 13, CT fixed plate II 14 etc, mounting platform 5 passes through anchor screw to be fixed on ground, 6 interference fit of stand 12 lower extreme and stand fixed sleeve, stand 12 upper end is through locking screw 10 and last backup pad 9 rigid connection, CT fixed plate I7, cold wind backup pad gun 13, CT fixed plate II 14 passes through stand connecting block 8 and stand 12 rigid connection, eyebolt 11 and last backup pad 9 rigid connection, be used for realizing firmly supporting all the other each module, and provide accurate installation location and effectual vibration isolation and handle.
Referring to fig. 3, the mechanical loading module 2 of the present invention comprises a hydraulic loading submodule 15, an ultrasonic loading submodule 16 and a sample indexing submodule 17, wherein the hydraulic loading submodule 15 is rigidly connected to an expansion sleeve ii 41 of the sample indexing submodule 17 and an expansion sleeve i 38 of the ultrasonic loading submodule 16 through upper and lower piston rods 46 and 47, respectively; the sample transposition submodule 17 is rigidly connected with the middle connecting rod 27 of the ultrasonic loading submodule 16 through the expansion sleeve III 42, and can simultaneously realize double-end synchronous static tensile load loading, ultrasonic fatigue load loading and axial accurate transposition on a tested sample in a test.
Referring to fig. 4, the ultrasonic loading submodule 16 of the present invention is used for implementing ultrasonic fatigue loading of a tested sample, and comprises an intermediate connection plate 18, a lower connector fixing plate i 19, a lower nut 20, a lower ultrasonic connector 21, a lower high temperature connecting rod 22, an upper high temperature connecting rod 23, an upper connector fixing plate i 24, an upper ultrasonic connector 25, an ultrasonic transducer 26, an intermediate connection rod 27, a force sensor 28, a force sensor fixing plate 29, an upper force transmission rod 30, an upper connector fixing plate ii 31, an upper nut 32, an upper ultrasonic probe 33, an ultrasonic sample 34, a lower ultrasonic probe 35, a lower connector fixing plate ii 36, a lower force transmission rod 37, an expansion sleeve i 38, etc., wherein the intermediate connection rod 27 is rigidly connected to the force sensor 28, the force sensor 28 is rigidly connected to the force sensor fixing plate 29, the force sensor fixing plate 29 is rigidly connected to the upper force transmission rod 30, the upper force transmission rod 30 is rigidly connected to the force sensor fixing plate ii 31, the lower connector fixing plate i 31, The upper connector fixing plate I24 and the upper nut 32 are rigidly connected with the upper ultrasonic connector 25, the expansion sleeve I38 is rigidly connected with the middle connecting plate 18, the middle connecting plate 18 is rigidly connected with the lower dowel bar 37, the lower dowel bar 37 is rigidly connected with the lower ultrasonic connector 21 through the lower connector fixing plate I19 and the lower connector fixing plate II 36, and the ultrasonic transducer 26, the upper ultrasonic connector 25, the upper ultrasonic probe 33, the upper high-temperature connecting rod 23, the ultrasonic sample 34, the lower high-temperature connecting rod 22, the lower ultrasonic probe 35 and the lower ultrasonic connector 21 are rigidly connected through double-end studs for realizing ultrasonic fatigue loading on a tested sample.
The sizes of the upper and lower high- temperature connecting rods 23 and 22 in the ultrasonic loading sub-module 16 are combined with simulation analysis through special design to ensure that the ultrasonic loading sub-module can be matched with an ultrasonic system and longitudinal vibration is achieved at 20 kHz; symmetrically distributed H-shaped cooling channels are formed in the upper high-temperature connecting rod 23 and the lower high-temperature connecting rod 22, and the outlet/inlet of each cooling channel is arranged at a vibration displacement node of the cooling channel, so that the interference of a cooling water pipe on the vibration of the upper high-temperature connecting rod 23 and the lower high-temperature connecting rod 22 is reduced.
Referring to fig. 5 shows, the utility model discloses a sample transposition submodule 17 is by commercialization motor drive assembly 40, expand tight cover II 41, expand tight cover III 42 etc. and constitute, wherein in the commercialization motor drive assembly 40, with expand tight cover II 41, the axle that the tight cover III 42 that expands links to each other is integral key shaft 39, in the test process, hydraulic pressure loading submodule 15 can drive integral key shaft 39 and carry out linear motion, sample transposition submodule 17 can drive integral key shaft 39 and carry out rotary motion, thereby realize static tensile loading and accurate axial transposition to being tested the appearance simultaneously.
Referring to fig. 6, the hydraulic loading submodule 15 of the present invention is composed of an upper hydraulic cylinder 43, an upper accumulator 44, an upper valve plate assembly 45, an upper piston rod 46, a lower piston rod 47, a lower valve plate assembly 48, a lower accumulator 49, a lower hydraulic cylinder 50, etc., wherein the upper accumulator 44 is installed on the upper valve plate assembly 45, and the upper valve plate assembly 45 is rigidly connected to the upper hydraulic cylinder 43 through a bolt; the lower accumulator 49 is mounted on the lower valve plate assembly 48, and the lower valve plate assembly 48 is rigidly connected with the lower hydraulic cylinder 50 through bolts, so as to realize synchronous loading of double-end static tension/compression load of the sample to be tested.
Referring to fig. 7, the utility model discloses an in situ monitoring module 3 respectively through mounting platform 5, CT fixed plate II 14, stand connecting block 8, the I7 rigid connection of CT fixed plate in PMmodule 1, fixing base 67, fixing base 60, guide rail seat 61 and mounting bracket 58 for the realization is carried out by interior and outside, by synchronous sign and the three-dimensional reconsitution in the surface and the inside to being tested appearance defect information.
Referring to fig. 8 and fig. 9, the in-situ monitoring module 3 comprises a three-dimensional infrared thermal imaging submodule 51, a high depth-of-field microscopic imaging submodule 52 and a CT scanning imaging submodule 53, wherein the three-dimensional infrared thermal imaging submodule 51 is used for realizing the three-dimensional reconstruction of the temperature information of the gauge length section of the tested sample, and comprises a guide rail seat 61, an "H" -shaped mounting plate 62, a guide rail component i 63, a sliding block component i 68, an infrared thermal imaging device 69 and the like, wherein the two infrared thermal imaging devices 69 are all arranged on the "H" -shaped mounting plate 62, and the two are at a certain angle so as to realize the three-dimensional reconstruction of the global temperature information of the gauge length section of the tested sample; the high-depth-of-field microscopic imaging submodule 52 is used for realizing microscopic observation of surface defect information of a tested sample, and comprises a microscope mounting plate 64, a high-depth-of-field microscopic imaging device 65, a microscope three-degree-of-freedom positioning platform 66, a fixed base plate 67 and the like, wherein the high-depth-of-field microscopic imaging device 65 is fixed on the microscope mounting plate 64 through bolts, the microscope mounting plate 64 is fixed on the microscope three-degree-of-freedom positioning platform 66 through bolts, and under the driving of the microscope three-degree-of-freedom positioning platform 66, the high-depth-of-field microscopic imaging device 65 can be quickly and accurately adjusted relative to the axial and radial positions of the tested sample, so that the follow-up monitoring; the CT scanning imaging submodule 53 is used for realizing three-dimensional reconstruction of global defect information of a gauge length section of a tested sample, and comprises a CT three-degree-of-freedom positioning platform 54, a CT host 55, a high-resolution receiving plate 56, a receiving plate Z-direction positioning platform 57, an installation frame 58, a supporting plate 59, a fixed seat 60 and the like, wherein the CT host 55 is fixed on the supporting plate 59 through bolts, the supporting plate 59 is fixed on the CT three-degree-of-freedom positioning platform 54 through bolts, the CT three-degree-of-freedom positioning platform 54 is fixed on the fixed seat 60 through bolts, the high-resolution receiving plate 56 is fixed on the receiving plate Z-direction positioning platform 57 through bolts, the receiving plate Z-direction positioning platform 57 is fixed on the installation frame 58 through bolts, and under the driving of the CT three-degree-of freedom positioning platform; under the drive of the Z-direction positioning platform 57 of the receiving plate, the high-resolution receiving plate 56 can be quickly and accurately adjusted relative to the axial direction of the sample to be tested, and the CT host 55 and the high-resolution receiving plate 56 are matched for use, so that the layer-by-layer scanning and imaging of the gauge length section of the sample to be tested are realized.
"H" type mounting panel 62 pass through the bolt and be connected with slider assembly I68, slider assembly I68 and the cooperation of guide rail assembly I63, guide rail assembly I63 passes through bolt and guide rail seat 61 rigid connection, "the processing has the screw hole on the H" type mounting panel 62, and the corresponding position processing of guide rail seat 61 has the blind hole, "H" type mounting panel 62 can reciprocate along guide rail assembly I63 to realize through the bolt with guide rail seat 61's fixed.
Referring to fig. 10 to 12, the utility model discloses high temperature loading module 4 is by refrigeration component 70, go up dynamic seal bellows 71, vacuum cavity 72, left quartz observation window 73, cavity supporting seat 74, "L" type support 75, chamber door locker 76, move down sealing bellows 77, heating furnace 78, guide rail assembly II 79, preceding quartz observation window 80, vacuum pressure gauge 81, gas spring assembly 82, vacuum chamber door 83, chamber door handle 84, hinge 85, slider assembly II 86, rotary seal assembly I87, right quartz observation window 88, embedded quartz observation window assembly 89, vacuum bellows assembly 90, rotary seal assembly II 91, infrared thermometer I92, infrared thermometer II 93 etc. constitute, can establish vacuum or inert gas atmosphere in order to isolate oxygen, be used for realizing being tested the highest 1200 ℃ high temperature loading of appearance. The refrigerating assembly 70 is rigidly connected with the cold-air gun supporting plate 13 through screws; the left quartz observation window 73, the front quartz observation window 80 and the right quartz observation window 88 are rigidly connected with the outer wall of the vacuum cavity 72 through screws; the cavity door locker 76 and the cavity door handle 84 are rigidly connected with the outer wall of the vacuum cavity 72 through screws; the hinge 85 is respectively and rigidly connected with the vacuum cavity 72 and the vacuum cavity door 83 through screws; the bellows assembly 90 is rigidly attached to the flanged opening in the upper wall of the vacuum chamber 72 by screws.
In the high-temperature loading module 4, the gas spring assembly 82 is rigidly connected with the flange of the upper dynamic seal corrugated pipe 71 through bolts, and is used for limiting the axial rotation freedom of the corrugated pipe and preventing the corrugated pipe from being damaged by torsion.
Referring to fig. 13, in high temperature loading module 4, rotary seal subassembly I, II 87, 91 contain sealing washer I94, sealing washer subassembly 95, sealing washer II 96, sealed axle sleeve 97, sealing flange 98 etc, in the sealing groove of ultrasonic probe 33 shaft shoulder was gone into in the embedding of sealing washer subassembly 95, in the sealing groove of sealing washer I94 embedding sealing flange 98, in the sealing groove on the dynamic seal bellows 71 flange was gone into in the embedding of sealing washer II 96, rotary seal subassembly I, II 87, 91 and upper and lower ultrasonic probe 33, 35 cooperation, realization rotary seal.
In the high-temperature loading module 4, the embedded quartz observation window assembly 89 is an independent module and is fixed on the outer wall of the vacuum cavity 72 through bolts, so that the high-temperature loading module is convenient to disassemble; the embedded quartz observation window assembly 89 is composed of an inner layer of quartz glass and an outer layer of quartz glass, a gap is reserved between the inner layer of quartz glass and the outer layer of quartz glass, the gap is used for introducing circulating cooling water to realize cooling, the bottom of the outer layer of quartz glass is abutted against the wall of the heating furnace 78, the inner diameter of the inner layer of quartz glass is slightly larger than the outer diameter of the lens of the high-depth-of-field microscopic imaging device 65, and the lens of the high-depth-of-field microscopic imaging device 65 can be inserted into the embedded quartz observation window.
In the high-temperature loading module 4, the cavity supporting seat 74 is welded on the side wall of the vacuum cavity 72 and is rigidly connected with the sliding block assembly II 86 through a bolt, the sliding block assembly II 86 is matched with the guide rail assembly II 79, the guide rail assembly II 79 is rigidly connected with the L-shaped support 75 through a bolt, the L-shaped support 75 is rigidly connected with the mounting platform 5 through a bolt, and when a normal-temperature test is carried out, the vacuum cavity 72 can move along the guide rail to provide sufficient operating space for testing personnel.
Referring to fig. 1 to 17, the specific operation steps of the high temperature ultrasonic fatigue in-situ test performed in the practical use of the present invention are as follows:
step one, clamping of the ultrasonic sample 34: moving the H-shaped mounting plate 62 to an upper limit position along the guide rail assembly I63 and fixing the H-shaped mounting plate by bolts, wherein the step is to avoid interference with the three-dimensional infrared thermal imaging submodule 51 when the vacuum cavity door 83 is opened and closed; opening a vacuum cavity door 83, and rigidly connecting the ultrasonic sample 34 with the upper and lower high- temperature connecting rods 23 and 22 through the stud;
step two, high-temperature loading of the ultrasonic sample 34: extracting air (oxygen) in the vacuum cavity 72 by using a two-stage vacuum-pumping mode of matching a mechanical pump (external device) with a molecular pump (external device) to construct a vacuum environment, or continuously introducing inert gas into the vacuum cavity 72 to remove the air (oxygen) in the vacuum cavity 72 to construct an inert gas atmosphere; the temperature controller leads voltages with different sizes to the resistance wire in the heating furnace 78 to heat the resistance wire, and high-temperature loading of the ultrasonic sample 34 at different temperatures is realized in a heat radiation mode; the infrared thermometers I, II 92 and 93 monitor the temperature of the ultrasonic sample 34 gauge length section in real time and feed the temperature back to the temperature controller to form closed-loop control;
step three, loading the static tensile/compressive load of the ultrasonic sample 34: the static tensile/compressive load loading of the ultrasonic sample 34 is realized by the mechanical loading module 2, the upper and lower high-pressure oil drives the piston rods 46 and 47 to move oppositely, the power is transferred to the ultrasonic loading submodule 16, and the upper and lower high- temperature connecting rods 23 and 22 are driven to move oppositely, so that the static tensile/compressive load loading of the ultrasonic sample 34 is realized;
step four, loading the ultrasonic fatigue load of the ultrasonic sample 34: the loading of the ultrasonic fatigue load of the ultrasonic sample 34 is realized by the ultrasonic loading submodule 16, the weak mechanical vibration output by the ultrasonic transducer 26 is amplified by the two poles of the upper ultrasonic connector 25 and the upper ultrasonic probe 33, and then is sequentially transmitted to the upper high-temperature connecting rod 23, the ultrasonic sample 34, the lower high-temperature connecting rod 22, the lower ultrasonic probe 35 and the ultrasonic connector 21, and the parts are excited to form stable resonance at 20kHz, so that the loading of the ultrasonic fatigue load of the ultrasonic sample 34 is realized;
step five, axial transposition of the ultrasonic sample 34: the axial transposition of the ultrasonic sample 34 is realized by the sample transposition sub-module 17, and the power output by the servo motor in the commercial motor driving assembly 40 is transmitted to the spline shaft 39 through the speed reducer to drive the ultrasonic loading sub-module 16 to rotate, so that the axial transposition of the ultrasonic sample 34 is realized;
step six, parallel in-situ monitoring of the ultrasonic sample 34: the parallel in-situ monitoring of the ultrasonic sample 34 is realized by the in-situ monitoring module 3, in the three-dimensional infrared thermal imaging submodule 51, two infrared thermal imaging devices 69 are both arranged on the H-shaped mounting plate 62, and the two devices form a certain angle, so that the three-dimensional reconstruction of the temperature information of the gauge length section of the tested sample is realized; in the high depth-of-field microscopic imaging submodule 52, the driving high depth-of-field microscopic imaging device 65 of the microscope three-degree-of-freedom positioning platform 66 performs rapid and accurate adjustment on the axial and radial positions of the sample to be tested, so as to realize follow-up monitoring on the surface morphology and defects of the gauge length central micro area of the sample to be tested; in the CT scanning imaging submodule 53, the driving CT host 55 of the CT three-degree-of-freedom positioning platform 54 scans and images the scale distance segment of the tested sample layer by layer, so as to realize three-dimensional reconstruction of the global defect information of the scale distance segment of the tested sample; the three-dimensional infrared thermal imaging sub-module 51, the high-depth-of-field microscopic imaging sub-module 52 and the CT scanning imaging sub-module 53 can be used simultaneously, or in a combined way of two or in a single way, so that the dynamic in-situ monitoring of the ultrasonic sample 34 in the test process is realized.
Referring to fig. 14 to 19, the related formula of in-situ monitoring of the present invention is as follows:
CT scanning imaging principle formula
In the formula (I), the compound is shown in the specification,
in order to obtain the intensity of the radiation after passing through the test sample,
is the intensity of the incident radiation,
in order to be the attenuation coefficient of the radiation,
is the thickness of the sample to be tested through which the radiation passes.
The above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made to the present invention should be included in the protection scope of the present invention.
Claims (9)
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| CN201921515680.5U CN210665328U (en) | 2019-09-12 | 2019-09-12 | High temperature ultrasonic fatigue in-situ testing instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441163A (en) * | 2019-09-12 | 2019-11-12 | 吉林大学 | High temperature ultrasonic fatigue in-situ test instrument and test method |
| CN113790975A (en) * | 2021-09-14 | 2021-12-14 | 吉林大学 | Ultrasonic horn assembly, ultrasonic fatigue loading test device and test method |
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2019
- 2019-09-12 CN CN201921515680.5U patent/CN210665328U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441163A (en) * | 2019-09-12 | 2019-11-12 | 吉林大学 | High temperature ultrasonic fatigue in-situ test instrument and test method |
| CN113790975A (en) * | 2021-09-14 | 2021-12-14 | 吉林大学 | Ultrasonic horn assembly, ultrasonic fatigue loading test device and test method |
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