CN210221717U - Mechanical property testing instrument for ultrahigh-temperature high-frequency material - Google Patents
Mechanical property testing instrument for ultrahigh-temperature high-frequency material Download PDFInfo
- Publication number
- CN210221717U CN210221717U CN201920691681.9U CN201920691681U CN210221717U CN 210221717 U CN210221717 U CN 210221717U CN 201920691681 U CN201920691681 U CN 201920691681U CN 210221717 U CN210221717 U CN 210221717U
- Authority
- CN
- China
- Prior art keywords
- frequency
- loading
- temperature
- stretching
- loading module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to an ultra-temperature high frequency material mechanical properties test instrument belongs to precision instruments test field. The pre-stretching loading module is driven by two servo motors in the vertical direction to realize the loading of the stretching preload of the cross-shaped test piece in the vertical direction; the high-frequency fatigue loading module is used for realizing the mechanical property test of the high-frequency fatigue material of the test piece based on the ultrasonic fatigue experiment principle; the stretching/compressing loading module is driven by two horizontally arranged electric actuating cylinders to realize loading of a cross-shaped stretching/compressing complex load; the ultra-high temperature loading module is provided with a low and medium frequency induction split heating furnace, so that ultra-high temperature local loading of a test piece test area is realized, and the highest loading temperature can reach 1600 ℃. Has the advantages that: when the tensile/compression test is carried out on the test piece, the high-frequency fatigue test and the ultrahigh-temperature loading environment are additionally arranged, so that the tensile/compression test and the high-frequency fatigue test of the material are closer to a real service environment, and the reliability and the accuracy of a test result are improved.
Description
Technical Field
The utility model relates to an accurate instrument test field, in particular to ultra-high temperature high frequency material mechanical properties test instrument. The utility model discloses can provide the loading of drawing/pressing complicated load for ultra-high temperature high frequency material under vacuum, inert gas or local oxidation's atmosphere, utilize ultrasonic fatigue test technique to develop the high frequency fatigue test of material simultaneously under above-mentioned complicated load and environment, realize the test of material service performance under the specific operating mode.
Background
In the field of aerospace, key parts are all used in extreme environments such as high temperature and high pressure, high-speed rotation, multiple stress, complex load and the like. Although a great deal of researchers are dedicated to research on failure modes/mechanisms of materials under extreme environments, the failure modes/mechanisms of the materials are still poorly understood, and the most important reason is that a test instrument for simulating the extreme environments involved in the aerospace field is lacked, and the correctness of various proposed theoretical models cannot be verified through tests. Therefore, the research of a test instrument under high temperature/complex load is developed to evaluate and further ensure the service performance of the key material aiming at the research requirement of the failure mode/mechanism of the key material under complex load, and an important technical support is provided for serving the national important strategic demand.
The method has the advantages that the data of the mechanical performance of the aerospace material in service in an extreme environment are obtained, so that the research on the failure mode/mechanism of the material is facilitated, and the occurrence of serious accidents caused by the failure of the material is reduced or even eliminated; but also helps to improve the manufacturing process of parts in the field so as to improve the service performance of the material. Therefore, research and development of a test instrument for materials serving at high temperature, high frequency and bearing complex load in the aerospace field are significant and have a very wide application prospect.
Disclosure of Invention
An object of the utility model is to provide an ultra-high temperature high frequency material mechanical properties test instrument, the complicated load that solves the prior art existence is difficult to the problem that loading, conventional fatigue test cycle length, extreme environment are difficult to the simulation. The utility model can simulate high temperature/vacuum atmosphere and realize the test of mechanical property of high temperature high frequency material in the aerospace field except the complex load loading and the loading of the super fatigue of the material tension/compression; if a double colorimetric thermodetector, a digital speckle technology and the like are combined, the in-situ test for observing the material in real time can be realized.
The utility model is used for to various high temperature, high frequency material mechanical properties test, probe its inefficacy mechanism at actual in-service process, acquire the mechanical properties data of material. The utility model integrates a tensile/compressive loading module, an ultrasonic fatigue loading unit and an ultra-high temperature loading module, and the biaxial tensile/compressive test can simulate various plane stress states, so that the utility model utilizes the tensile/compressive loading module to simulate the complex load borne by the material; the ultrasonic fatigue test technology is a resonance type high-frequency fatigue test method, and as the test frequency can reach 20kHz, a group of 10 fatigue test methods is completed10The cycle fatigue test only needs 14 hours, and the fatigue test time can be greatly shortened, the utility model utilizes the ultrasonic fatigue loading module to carry out high-frequency fatigue test on the test piece; aerospace field key material is mostly on a service in ultra-high temperature, vacuum environment, the utility model discloses utilize ultra-high temperature loading module to heat the vacuum atmosphere of simulation test piece to the test piece. Based on above, the utility model discloses can realize the test of buildding and accomplishing relevant mechanical properties of ultra-high temperature high frequency material mechanical properties test instrument platform.
The above object of the utility model is realized through following technical scheme:
the ultrahigh-temperature high-frequency material mechanical property testing instrument comprises a stretching/compressing loading module 1, a high-frequency fatigue loading module 7, a pre-stretching loading module 5, an ultrahigh-temperature loading module and a rack 6, wherein rack supporting legs I-IV of the rack 6 are fastened on a shock insulation table through screws; the tensile/compressive loading module 1 is fixedly connected with a rack supporting block I603 of the rack 6 through a flange of the electric cylinder 101 and a flange connecting frame 2 in a threaded manner, and the tensile/compressive loading module 1 is horizontally and symmetrically arranged to realize the loading of complex loads; the pre-stretching loading module 5 is fixedly connected with the rack supporting block II 608 of the rack 6 through the flange of the servo motor 501, the flange connecting plate 502 and the guide supporting block 4 in a threaded manner, so that the pre-stretching loading of the test piece is realized; the high-frequency fatigue loading module 7 is fixed on the heating furnace body 302 of the ultra-high temperature loading module through the flange of the ultrasonic connector 702 and the corrugated pipe 304 in a threaded manner, so that the ultrasonic fatigue loading of high-frequency materials is realized; the heating furnace body 302 is in threaded connection with the stretching/compressing loading module 1 and the pre-stretching loading module 5 through corrugated pipes and is fixed on the frame 6; the furnace body supporting block 306 is arranged at the middle lower part of the heating furnace body 302 and is used for reinforcing the heating furnace body 302 and preventing the heating furnace body from deforming too much due to high temperature; the vacuumizing system is in threaded connection with a vacuum pump interface 307 on the split intermediate frequency induction heating furnace 3, so that ultrahigh-temperature loading of the test piece in a vacuum, inert gas or local oxidation atmosphere is realized.
The pre-stretching loading module 5 comprises: the flange of the servo motor 501 and the flange connecting plate 502 are in threaded connection with the guide supporting block 4, and the guide supporting block 4 is in threaded connection with the rack supporting block II 608 to fix the servo motor on the rack 6; an output shaft of the servo motor 501 is connected with a ball screw 503 through a coupler, a screw nut 504 is installed on the ball screw 503, and the screw nut 504, a nut fixing block 505, a connecting plate I506, a tension and pressure sensor 510 and a connecting plate II 507 are sequentially connected through threads; the guide rod 511 is connected with a blind hole penetrating through the guide supporting block 4, the connecting plate II 507 and the guide supporting block 4 through bolts; the connecting plate II 507 and the pre-stretching loading rod 509 are fixed on the pre-stretching connecting block 508, and pre-stretching loading of the cross test piece 9 is achieved.
The stretching/compressing loading module 1 is characterized in that an electric cylinder 101 is fixed on a frame 6 through a flange connecting frame 2, an output shaft of the electric cylinder 101, a connecting shaft 102 and a stretching pressure sensor 103 are sequentially connected through threads, a heat insulation plate 104 is arranged between the force sensor 103 and a transition shaft I105, the transition shaft I105 is connected with the transition shaft II 106 through flange threads, a water inlet pipe connector 108 and a water outlet pipe connector 107 are arranged in the transition shaft II 106, the water inlet pipe connector 108 and the water outlet pipe connector 107 penetrate through the transition shaft III 109, the transition shaft II 106 and the transition shaft III 109 are connected with the high-temperature clamp body 110 through threads, the high-temperature clamp body 110 is coated with a clamp heat insulation layer 111, and the stretching/compressing loading modules 1 are horizontally and symmetrically arranged on a rack supporting block I603 of the rack, so that the loading of complex pulling-stretching and pulling-compressing loads on the test piece is realized.
The high-frequency fatigue loading module 7 comprises an ultrasonic transducer 704, an ultrasonic generator 703, an ultrasonic connector 702 and an amplitude transformer 701 which are sequentially in threaded connection, a flange on the ultrasonic connector 702 is in threaded connection with the corrugated pipe 304 and is fixed on the heating furnace body 302, and a boss at the end part of the amplitude transformer 701 is in threaded connection with the cross-shaped test piece 9.
The ultrahigh-temperature loading module comprises a split intermediate-frequency induction heating furnace 3 and an intermediate-frequency induction heating device 8, a heating furnace rear cover 301 is heated by a low-frequency heating power supply, a heating furnace front cover 305 is heated by a high-frequency heating power supply, intermediate-frequency and high-frequency alternating currents of the induction heating power supply are transmitted into an induction coil 805 through a vertical bar 801 to heat a graphite body, the intermediate-frequency induction heating device 8 is installed on the inner walls of the heating furnace front cover 305 and the heating furnace rear cover 301 through a heating furnace supporting body 802 in a threaded manner, the induction coil 805 is installed in a heat-preservation graphite felt II 809, the heat-preservation graphite felt II 809, a graphite heating body 806 and a heat-preservation graphite felt I808 are sequentially assembled in a heating body supporting sleeve 804, a high-temperature-resistant clamping member 807 is arranged in the heating body supporting sleeve 804, and the heating body supporting sleeve 804 is tightly assembled with the high-temperature, outside vacuum pumping system carries out the construction of vacuum environment to sealed chamber through vacuum pump interface 307, thereby to induction coil 805 circular telegram to graphite heating body 806 heating, graphite heating body 806 heats the test temperature to the cross test piece in gauge length district through heat-conduction, heat preservation graphite felt II 809 and heat preservation graphite felt I808 keep warm to graphite heating body 806, realize the loading of 9 ultra-high temperatures of cross test piece under vacuum, inert gas or local oxidation's atmosphere, wherein the local oxidation temperature of super-high temperature is the highest 1600 ℃.
The frame 6 comprises frame support legs I-IV (604, 605, 606, 607), a frame front support plate 602, frame support blocks I-IV (603, 608, 611, 614), frame connecting frames I-IV (609, 610, 613, 612) and a frame rear support plate 601, wherein the frame front support plate 602 and the frame rear support plate 601 are assembled together through the frame support blocks I-IV (603, 608, 611, 614) and the frame connecting frames I-IV (609, 610, 613, 612) through screws to form a main body frame of the instrument.
The beneficial effects of the utility model reside in that:
1. the utility model discloses compare with current instrument, the loading of tensile/compression complex load not only can be realized to the cross test piece that aerospace field high temperature high frequency material made in biaxial tensile test, has still add ultra-temperature vacuum atmosphere loading and the tired loading of supersound of less fatigue test time by a wide margin, makes the condition of being in service of material very be close operating condition, has improved the accuracy and the reliability of test result.
2. Through the utility model discloses carry out the experiment and can obtain aerospace field ultra-high temperature high frequency material more accurate mechanical properties parameter under tensile/compression composite load, ultra-temperature, supersound fatigue effect, not only can provide corresponding mechanical parameters for relevant scientific research personnel study above-mentioned material when the mechanism of inefficacy under complicated load, ultra-temperature, high frequency effect, can carry out experimental verification to the theoretical model of the mechanism of inefficacy that relevant scientific research personnel provided in addition, have great significance to the emergence of the major accident that the above-mentioned material of prevention leads to because of becoming invalid.
3. The utility model discloses it is compatible to have the normal position test equipment. The instrument can be combined with a digital speckle technology, a double colorimetric thermodetector and the like in the test process to realize the real-time observation of the mechanical property of the material so as to observe the evolution process of material failure and research the failure mechanism of the material.
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 structure of the present invention;
fig. 2 is a schematic structural view of the rack of the present invention;
fig. 3 is a half sectional view of the frame of the present invention;
fig. 4 is a schematic structural diagram of the tension/compression loading module of the present invention;
FIG. 5 is a cross-sectional view of the cooling structure of the clamp body of the tension/compression loading module of the present invention;
fig. 6 is a schematic structural view of the symmetrical arrangement of the tension/compression loading modules of the present invention;
FIG. 7 is a schematic structural view of a split type intermediate frequency induction heating furnace of the present invention;
fig. 8 is a schematic perspective view of the intermediate frequency induction heating apparatus of the present invention;
fig. 9 is a schematic side view of the intermediate frequency induction heating apparatus of the present invention;
FIG. 10 is a cross-sectional view taken along line A-A of FIG. 9;
fig. 11 is a schematic structural diagram of the arrangement of the pre-stretching loading module and the ultrasonic fatigue loading module of the present invention;
fig. 12 is a schematic structural view of the pre-stretching loading module and the ultrasonic fatigue loading module of the present invention;
fig. 13 is a schematic diagram of the ultrasonic high-frequency fatigue testing device of the utility model.
In the figure: 1. a tension/compression loading module; 2. a flange connecting frame; 3. split medium-frequency induction heating furnace; 4. a guide support block; 5. a pre-tensioning loading module; 6. a frame; 7. a high-frequency fatigue loading module; 8. a medium frequency induction heating device; 9. a cross-shaped test piece; 10. an industrial control computer; 11. an ultrasonic power generator; 101. an electric cylinder; 102. a connecting shaft; 103. a tension and compression sensor; 104. a heat insulation plate; 105. a transition shaft I; 106. a transition shaft II; 107. a water outlet pipe joint; 108. a water inlet pipe joint; 109. a transition shaft III; 110. a high-temperature clamp body; 111. a clamp heat insulation layer; 301. a rear cover of the heating furnace; 302. a heating furnace body; 303. a quick tightening mechanism; 304. a bellows; 305. a heating furnace front cover; 306. a furnace body supporting block; 307. a vacuum pump interface; 501. a servo motor; 502. a flange connecting plate; 503. a ball screw; 504. a nut; 505. a nut fixing block; 506. a connecting plate I; 507. a connecting plate II; 508. pre-stretching the connecting block; 509. pre-stretching the loading rod; 510. a pull pressure sensor; 511. a guide bar; 601. a back support plate of the frame; 602. a front support plate of the frame; 603. a frame supporting block I; 604. a frame supporting leg I; 605. a frame support leg II; 606. a frame support leg IV; 607. a frame support leg III; 608. a frame supporting block II; 609. a rack connecting plate I; 610. a frame connecting plate II; 611. a frame supporting block III; 612. a frame connecting plate IV; 613. a frame connecting plate III; 614. a frame support block IV; 701. an amplitude transformer; 702. an ultrasonic connector; 703. an ultrasonic generator; 704. an ultrasonic transducer; 801. Erecting strips; 802. a heating furnace support body; 803. a stop pin; 804. a heating body support sleeve; 805. an induction coil; 806. a graphite heater; 807. a high temperature resistant clamp; 808. insulating graphite felt I; 809. and (5) insulating graphite felt II.
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 13, the ultra-high temperature and high frequency material mechanical property testing instrument of the present invention includes a pre-stretching loading module, a high frequency fatigue loading module, a stretching/compressing loading module, an ultra-high temperature loading module and a main frame. The pre-stretching loading module is driven by two servo motors in the vertical direction to realize the loading of the stretching preload of the cross-shaped test piece in the vertical direction; the high-frequency fatigue loading module is used for realizing the mechanical property test of the high-frequency fatigue material of the test piece based on the ultrasonic fatigue experiment principle; the stretching/compressing loading module is driven by two horizontally arranged electric actuating cylinders to realize the loading of the stretching/compressing complex load of the cross test piece; the ultra-high temperature loading module is provided with a low and medium frequency induction split heating furnace, so that ultra-high temperature local loading of a test piece test area is realized, and the highest loading temperature can reach 1600 ℃. When the tensile/compression test is carried out on the test piece, the high-frequency fatigue test and the ultrahigh-temperature loading environment are additionally arranged, so that the tensile/compression test and the high-frequency fatigue test of the material are closer to a real service environment, and the reliability and the accuracy of a test result are improved.
Referring to fig. 1 to 12, the ultra-high temperature and high frequency material mechanical property testing instrument of the present invention comprises a tension/compression loading module 1, a high frequency fatigue loading module 7, a pre-tension loading module 5, an ultra-high temperature loading module and a frame 6, wherein frame support legs i to iv of the frame 6 are fastened on a customized shock insulation table with reserved threaded holes through screws; the tension/compression loading module 1 is fixedly connected with a rack supporting block I603 of the rack 6 through a flange of the electric cylinder 101 and a flange connecting frame 2 in a threaded manner, and the tension/compression loading module 1 is horizontally and symmetrically arranged to realize the loading of complex loads such as tension-tension, tension-compression, compression-compression and the like; the pretensioning loading module 5 is fixedly connected with the rack supporting block II 608 of the rack 6 through the flange of the servo motor 501, the flange connecting plate 502 and the guide supporting block 4 in a threaded manner, so that the pretensioning loading of the test piece is realized. The high-frequency fatigue loading module 7 is fixed on the heating furnace body 302 of the ultra-high temperature loading module through the flange of the ultrasonic connector 702 and the corrugated pipe 304 in a threaded manner, so that the ultrasonic fatigue loading of high-frequency materials is realized; the heating furnace body 302 is in threaded connection with the stretching/compressing loading module 1 and the pre-stretching loading module 5 through corrugated pipes and is fixed on the frame 6; the furnace body supporting block 306 is arranged at the middle lower part of the heating furnace body 302 and is used for reinforcing the heating furnace body 302 and preventing the heating furnace body from deforming too much due to high temperature; the vacuumizing system is in threaded connection with a vacuum pump interface 307 on the split intermediate frequency induction heating furnace 3, so that ultrahigh-temperature loading of the test piece in a vacuum, inert gas or local oxidation atmosphere is realized.
Referring to fig. 2 and 3, the frame 6 of the present invention is composed of frame support legs i to iv (604, 605, 606, 607), a front frame support plate 602, frame support blocks i to iv (603, 608, 611, 614), frame connecting frames i to iv (609, 610, 613, 612) and a rear frame support plate 601, wherein the front frame support plate 602 and the rear frame support plate 601 are assembled together by screws through the frame support blocks i to iv (603, 608, 611, 614) and the frame connecting frames i to iv (609, 610, 613, 612), thereby forming a main frame of the instrument.
Referring to fig. 4 to 6, a tension/compression loading module 1 of the present invention mainly comprises an electric cylinder 101, a connecting shaft 102, a force sensor 103, a heat-insulating plate 104, a transition shaft i 105, a transition shaft ii 106, a water outlet pipe joint 107, a water inlet pipe joint 108, a transition shaft iii 109, a high temperature clamp body 110, and a clamp heat-insulating coating 111, wherein the electric cylinder 101 is fixed on a frame 6 through a flange connecting frame 2, an output shaft of the electric cylinder 101, the connecting shaft 102, and the tension pressure sensor 103 are sequentially connected through threads, the heat-insulating plate 104 is installed between the force sensor 103 and the transition shaft i 105 and is connected through flange threads, the transition shaft i 105 and the transition shaft ii 106 are connected through flange threads, the transition shaft ii 106 is provided with round holes of the water inlet pipe joint 108 and the water outlet pipe joint 107, the water inlet pipe joint 108 and the water outlet pipe joint 107 penetrate through the transition shaft iii 109 and are communicated, the transition shaft II 106 and the transition shaft III 109 are in threaded connection with the high-temperature clamp body 110, the clamp heat insulation layer 111 is coated on the high-temperature clamp body 110, and the stretching/compressing loading modules 1 are horizontally and symmetrically arranged and installed on a rack supporting block I603 of the rack, so that the loading of complex loads of stretching-stretching and stretching-compressing of the test piece is realized.
Referring to fig. 7 to 10, the ultra-high temperature loading module of the present invention includes a split intermediate frequency induction heating furnace 3 and an intermediate frequency induction heating device 8, the heating furnace back cover 301 is heated by a low frequency heating power supply, the heating furnace front cover 305 is heated by a high frequency heating power supply, the intermediate frequency and high frequency alternating current of the induction heating power supply is transmitted into an induction coil 805 through a vertical bar 801 to heat a graphite body, the intermediate frequency induction heating device 8 is installed on the inner walls of the heating furnace front cover 305 and the heating furnace back cover 301 through a heating furnace supporting body 802 by threads, the induction coil 805 is installed in a heat preservation graphite felt ii 809, the heat preservation graphite felt ii 809, a graphite heating body 806 and a heat preservation graphite felt i 808 are sequentially assembled into a heating body supporting sleeve 804, a high temperature resistant clamping member 807 is arranged in the heating body supporting sleeve 804, the heating body supporting sleeve 804 is closely assembled with the high temperature resistant clamping member 807 through a stop pin 803 of the heating, the outside vacuum pumping system carries out the construction of vacuum environment to the seal chamber through vacuum pump interface 307, thereby to induction coil 805 circular telegram to graphite heating member 806 heating, graphite heating member 806 heats the test temperature to the cross test piece in gauge length district through heat-conduction, and heat preservation graphite felt II 809 and heat preservation graphite felt I808 keep warm to graphite heating member 806, in accordance with above can realize the super high temperature loading of cross test piece 9 under vacuum, inert gas or local oxidation's atmosphere, and wherein the local oxidation temperature of super high temperature is the highest 1600 ℃.
Referring to fig. 11 to 13, the high frequency fatigue loading module 7 of the present invention includes an ultrasonic transducer 704, an ultrasonic generator 703, an ultrasonic connector 702, and an amplitude transformer 701, which are sequentially connected by a thread, wherein a flange on the ultrasonic connector 702 is connected with the corrugated pipe 304 by a thread and is fixed on the heating furnace body 302, and a boss at the end of the amplitude transformer 701 is connected with the cross test piece 9 by a thread, thereby realizing the pre-stretching loading and the ultrasonic fatigue loading of the cross test piece 9; the ultrasonic resonance mechanical system of the high-frequency fatigue loading module consists of an ultrasonic transducer 704, an amplitude transformer 701 in the middle and a cross test piece 9 at the lower part; during testing, firstly, the resonance frequency is determined through frequency sweeping, then, an alternating voltage is provided for the ultrasonic transducer 704 according to the resonance frequency by using the industrial control computer 10 and the ultrasonic power generator 11, the displacement amplitude of the time end can be changed by changing the amplitude of the alternating voltage, and the stress amplitude on the tested section of the cross-shaped test piece is correspondingly changed, so that the high-frequency fatigue loading of the cross-shaped test piece 9 is realized.
The pre-stretching loading module 5 of the utility model mainly comprises a servo motor 501, a flange connecting plate 502, a guide supporting block 4, a ball screw 503, a nut 504, a nut fixing block 505, a connecting plate I506, a pre-stretching loading block 508, a pre-stretching loading rod 509, a tension pressure sensor 510, a connecting plate II 507, a guide rod 512 and a guide supporting block 4; the flange of the servo motor 501 and the flange connecting plate 502 are in threaded connection with the guide supporting block 4, and the guide supporting block 4 is in threaded connection with the rack supporting block II 608 to fix the servo motor on the rack 6; an output shaft of the servo motor 501 is connected with a ball screw 503 through a coupler, a nut 504 is in threaded connection with a nut fixing block 505, and the nut fixing block 505, a connecting plate I506, a pull pressure sensor 510 and a connecting plate II 507 are in threaded connection in sequence; the guide rod 511 is connected with a blind hole penetrating through the guide supporting block 4, the connecting plate II 507 and the guide supporting block 4 through bolts; the connecting plate ii 507 and the pre-stretching loading rod 509 are fixed on the pre-stretching connecting block 508 through screw connection, and pre-stretching loading of the cross-shaped test piece 9 can be realized according to the above description.
The utility model discloses can provide the loading of ultra-high temperature high frequency material "draw-draw, draw-press, press-press" complicated load under high temperature/vacuum environment, can develop the high frequency fatigue test to the material studied in combination with supersound fatigue test technique simultaneously. The tension/compression loading modules 1 which are horizontally and symmetrically arranged are driven by an electric cylinder 101, and a tension pressure sensor 103 is used as a detection element, so that force-displacement-force closed-loop control can be realized, and the precise loading of tension/compression loads can be realized; the pretensioning loading modules 5 symmetrically arranged in the vertical direction drive a ball screw 503-nut 504 mechanism by taking a servo motor 501 as power to realize pretensioning loading on the cross-shaped test piece, and take a tension pressure sensor 511 as a detection element to realize precise loading on pretensioning load of the cross-shaped test piece; the high-frequency fatigue loading module 7 generates a high-frequency alternating electric signal by the ultrasonic generator 703 and transmits the high-frequency alternating electric signal to the ultrasonic transducer 704, and further excites the high-frequency fatigue executing assembly including the cross test piece 9 to generate high-frequency harmonic vibration by the amplitude transformer 701, so that a high-frequency fatigue test of the cross test piece 9 is realized; superhigh temperature loading module is including split intermediate frequency induction heating furnace 3 and 8 two parts of intermediate frequency induction heating device, intermediate frequency induction heating device 8 passes through heating furnace supporter 802 threaded connection and fixes on heating furnace body 302, vacuum pumping system passes through vacuum pump interface 307 and links to each other the construction that realizes heating furnace body 302 vacuum atmosphere with heating furnace body 302, through leading into the alternating current of specific frequency to graphite heating body 806 heating to intermediate frequency induction heating device 8 induction coil 805, graphite heating body 806 heats cross test piece 9 through heat-conduction, thereby realize the loading of 9 superhigh temperature/vacuum of cross test piece.
Example 1:
the tensile/compressive properties of the C/C composite were tested at 1400 ℃. Before testing, clamping a cross-shaped test piece 9 made of a C/C composite material, screwing a heating furnace front cover 305 and a heating furnace rear cover 301 by using a quick screwing mechanism 303, calibrating an instrument, checking the sealing performance of each module and other preliminary preparation works; starting the equipment, firstly carrying out vacuum treatment on the sealed cavity of the heating furnace body 302, introducing intermediate-frequency current into the intermediate-frequency induction heating device 8 to heat the graphite heating body 806 after the vacuum degree reaches the requirement, detecting the temperature of the cross-shaped test piece 9 by using a double colorimetric thermodetector, and keeping the temperature by using a temperature control system when the test temperature of a gauge distance area reaches 1400 ℃; meanwhile, the electric cylinder 101 of the tension/compression loading module 1 is controlled to perform tension/compression test on the cross test piece, and the data of the sensor is collected and processed in real time to obtain a tension/compression performance curve of the C/C composite material at 1400 ℃.
Example 2:
the C/C composite material is subjected to a high-frequency fatigue test at 1400 ℃. The difference from the example 1 is that after the gauge length area reaches the test temperature of 1400 ℃, the pre-stretching loading module is controlled to pre-stretch the cross test piece 9, the cross test piece is stretched in the horizontal direction through the stretching/compressing loading unit 1, the high-frequency fatigue loading module 7 is started, the frequency of fatigue loading is controlled to be 20kHz, the high-frequency fatigue test is carried out on the cross test piece 9, the test process is observed in real time through a perspective window of a front cover of the heating furnace by utilizing a digital speckle technology, and the fatigue test of the cross test piece 9 at the temperature of 1600 ℃ is completed.
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 (6)
1. The mechanical property test instrument for the ultrahigh-temperature high-frequency material is characterized in that: the device comprises a stretching/compressing loading module (1), a high-frequency fatigue loading module (7), a pre-stretching loading module (5), an ultra-high temperature loading module and a rack (6), wherein rack supporting legs I-IV of the rack (6) are fastened on a vibration isolation platform through screws; the stretching/compressing loading module (1) is fixedly connected with a rack supporting block I (603) of the rack (6) through a flange and a flange connecting frame (2) of the electric cylinder (101) in a threaded manner, and the stretching/compressing loading module (1) is horizontally and symmetrically arranged to realize loading of complex load; the pre-stretching loading module (5) is fixedly connected with a rack supporting block II (608) of the rack (6) through a flange of the servo motor (501), a flange connecting plate (502) and a guide supporting block (4) in a threaded manner, so that the pre-stretching loading of the test piece is realized; the high-frequency fatigue loading module (7) is fixed on a heating furnace body (302) of the ultra-high temperature loading module through a flange of an ultrasonic connector (702) and a corrugated pipe (304) in a threaded manner, so that the ultrasonic fatigue loading of high-frequency materials is realized; the heating furnace body (302) is in threaded connection with the stretching/compressing loading module (1) and the pre-stretching loading module (5) through corrugated pipes and is fixed on the rack (6); the furnace body supporting block (306) is arranged at the middle lower part of the heating furnace body (302); the vacuumizing system is in threaded connection with a vacuum pump interface (307) on the split intermediate frequency induction heating furnace (3), so that ultrahigh-temperature loading of the test piece in a vacuum, inert gas or local oxidation atmosphere is realized.
2. The mechanical property test instrument for the ultrahigh-temperature high-frequency material according to claim 1, characterized in that: the pre-stretching loading module (5) comprises: the flange and the flange connecting plate (502) of the servo motor (501) are in threaded connection with the guide supporting block (4), and the guide supporting block (4) is in threaded connection with the rack supporting block II (608) to fix the servo motor on the rack (6); an output shaft of a servo motor (501) is connected with a ball screw (503) through a coupler, a screw nut (504) is installed on the ball screw (503), and the screw nut (504), a nut fixing block (505), a connecting plate I (506), a tension and pressure sensor (510) and a connecting plate II (507) are sequentially connected through threads; the guide rod (511) is connected with a blind hole penetrating through the guide supporting block (4), the connecting plate II (507) and the guide supporting block (4) through a bolt; and the connecting plate II (507) and the pre-stretching loading rod (509) are fixed on the pre-stretching connecting block (508), so that the pre-stretching loading of the cross test piece (9) is realized.
3. The mechanical property test instrument for the ultrahigh-temperature high-frequency material according to claim 1, characterized in that: the tension/compression loading module (1) is as follows: an electric cylinder (101) is fixed on a rack (6) through a flange connecting frame (2), an output shaft of the electric cylinder (101), a connecting shaft (102) and a tension and pressure sensor (103) are sequentially connected through threads, a thermal baffle (104) is installed between the force sensor (103) and a transition shaft I (105), the transition shaft I (105) and a transition shaft II (106) are connected through flange threads, a water inlet pipe joint (108) and a water outlet pipe joint (107) are arranged in the transition shaft II (106), the water inlet pipe joint (108) and the water outlet pipe joint (107) penetrate through a transition shaft III (109) and are communicated with hole positions corresponding to a high-temperature clamp body (110), the transition shaft II (106) and the transition shaft III (109) are connected with the high-temperature clamp body (110) through threads, a clamp thermal insulation layer (111) is coated on the high-temperature clamp body (110), and tension/compression loading modules (1) are horizontally and symmetrically arranged on a rack supporting block I (603) of the, therefore, the test piece is loaded with complex load of pulling-pulling and pulling-pressing.
4. The mechanical property test instrument for the ultrahigh-temperature high-frequency material according to claim 1, characterized in that: the high-frequency fatigue loading module (7) comprises an ultrasonic transducer (704), an ultrasonic generator (703), an ultrasonic connector (702) and an amplitude transformer (701) which are sequentially in threaded connection, a flange on the ultrasonic connector (702) is in threaded connection with the corrugated pipe (304) and is fixed on the heating furnace body (302), and a boss at the end part of the amplitude transformer (701) is in threaded connection with the cross-shaped test piece (9).
5. The mechanical property test instrument for the ultrahigh-temperature high-frequency material according to claim 1, characterized in that: the ultrahigh-temperature loading module comprises a split intermediate-frequency induction heating furnace (3) and an intermediate-frequency induction heating device (8), a heating furnace rear cover (301) is heated by a low-frequency heating power supply, a heating furnace front cover (305) is heated by a high-frequency heating power supply, intermediate-frequency and high-frequency alternating currents of the induction heating power supply are transmitted into an induction coil (805) through a vertical bar (801) to heat a graphite body, the intermediate-frequency induction heating device (8) is installed on the inner walls of the heating furnace front cover (305) and the heating furnace rear cover (301) through a heating furnace supporting body (802) in a threaded manner, the induction coil (805) is installed in a heat-insulating graphite felt II (809), the heat-insulating graphite felt II (809), a graphite heating body (806) and a heat-insulating graphite felt I (808) are sequentially assembled into a heating body supporting sleeve (804), and a high-temperature resistant clamping piece (807) is arranged in the heating, the heating body supports round pin (803) and the inseparable assembly of high temperature resistant chucking spare (807) of cover (804) through the backing pin of heating furnace supporter (802) and is in the same place, outside vacuum pumping system carries out the construction of vacuum environment through vacuum pump interface (307) to sealed chamber, thereby to induction coil (805) circular telegram to heating graphite heating body (806), graphite heating body (806) heat test temperature to the cross test piece in gauge length district through heat-conduction, heat preservation graphite felt II (809) and heat preservation graphite felt I (808) keep warm to graphite heating body (806), in the vacuum, realize cross test piece (9) ultra high temperature loading under inert gas or local oxidation's the atmosphere, wherein the local oxidation temperature of super high temperature is the highest 1600 ℃.
6. The mechanical property test instrument for the ultrahigh-temperature high-frequency material according to claim 1, characterized in that: the frame (6) comprises frame support legs I-IV (604, 605, 606 and 607), a frame front support plate (602), frame support blocks I-IV (603, 608, 611 and 614), frame connecting frames I-IV (609, 610, 613 and 612) and a frame rear support plate (601), wherein the frame front support plate (602) and the frame rear support plate (601) are assembled together through the frame support blocks I-IV (603, 608, 611 and 614) and the frame connecting frames I-IV (609, 610, 613 and 612) through screws to form a main body frame of the instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691681.9U CN210221717U (en) | 2019-05-15 | 2019-05-15 | Mechanical property testing instrument for ultrahigh-temperature high-frequency material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691681.9U CN210221717U (en) | 2019-05-15 | 2019-05-15 | Mechanical property testing instrument for ultrahigh-temperature high-frequency material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210221717U true CN210221717U (en) | 2020-03-31 |
Family
ID=69926038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920691681.9U Withdrawn - After Issue CN210221717U (en) | 2019-05-15 | 2019-05-15 | Mechanical property testing instrument for ultrahigh-temperature high-frequency material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210221717U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044722A (en) * | 2019-05-15 | 2019-07-23 | 吉林大学 | Superhigh temperature high frequency material mechanical property tester device and method |
| CN112326472A (en) * | 2020-09-25 | 2021-02-05 | 华东理工大学 | High temperature environment fatigue test device |
| CN116718497A (en) * | 2023-07-17 | 2023-09-08 | 天津大学 | Mechanical property testing device for special-shaped node sample |
-
2019
- 2019-05-15 CN CN201920691681.9U patent/CN210221717U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044722A (en) * | 2019-05-15 | 2019-07-23 | 吉林大学 | Superhigh temperature high frequency material mechanical property tester device and method |
| CN110044722B (en) * | 2019-05-15 | 2022-04-01 | 吉林大学 | Mechanical property testing instrument and method for ultrahigh-temperature high-frequency material |
| CN112326472A (en) * | 2020-09-25 | 2021-02-05 | 华东理工大学 | High temperature environment fatigue test device |
| CN112326472B (en) * | 2020-09-25 | 2024-04-12 | 华东理工大学 | High-temperature environment fatigue test device |
| CN116718497A (en) * | 2023-07-17 | 2023-09-08 | 天津大学 | Mechanical property testing device for special-shaped node sample |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110044722B (en) | Mechanical property testing instrument and method for ultrahigh-temperature high-frequency material | |
| CN210221717U (en) | Mechanical property testing instrument for ultrahigh-temperature high-frequency material | |
| US11635359B2 (en) | Instrument and method for mechanical properties in situ testing of materials under high temperature and complex mechanical loads | |
| CN108562505A (en) | Combined load and the material high-frequency fatigue test device and method under high temperature-atmosphere | |
| CN107703003B (en) | Ultra-high temperature in-situ biaxial stretching compression fatigue test platform | |
| CN110441163B (en) | High-temperature ultrasonic fatigue in-situ test instrument and test method | |
| CN108132189B (en) | High-temperature in-situ double-shaft loading testing device under continuous variable temperature | |
| CN102435404B (en) | Thermal vibration joint test device and method of flange sealing structure under complicated loaded conditions | |
| CN110715862A (en) | Instrument and method for testing mechanical properties of material under tension-torsion composite-force-heat coupling working condition | |
| CN108519321A (en) | Method for testing by using welding joint force-corrosion coupling testing device | |
| CN108732035B (en) | High-temperature fretting fatigue life testing method for tenon connection structure | |
| CN211668975U (en) | Mechanical property testing instrument for material under tension-torsion composite-force-heat coupling working condition | |
| CN207423694U (en) | The biaxial stretch-formed compression verification device of superhigh temperature complex load | |
| CN108717026A (en) | A kind of small-sized piezoelectric ceramic driving in situ fatigue test machine considering temperature gradient | |
| CN108776151A (en) | A kind of high/low temperature original position loading device based on X-ray transmission | |
| CN103116086B (en) | Equipment and method of rapid life tests of built-in multihole heater | |
| CN110031311B (en) | Method for rapidly measuring tensile mechanical property of rock | |
| CN210347362U (en) | Compensator constant pressure fatigue testing machine | |
| CN210665328U (en) | High-temperature ultrasonic fatigue in-situ test instrument | |
| CN214097006U (en) | Bellows high and low temperature fatigue test device | |
| CN103698073A (en) | Device and method for testing fastening pressure of shape memory alloy pipe joint | |
| CN208125526U (en) | High-temp in-situ Biaxial stress test device under continuous alternating temperature | |
| CN111398051A (en) | Polar environment ship structure static and dynamic mechanical property testing device and testing method thereof | |
| CN204346636U (en) | A kind of standard moment of couple charger for turbopump on-site torsion calibration | |
| CN110160723A (en) | A kind of thermal cell thermal vibration test method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200331 Effective date of abandoning: 20211026 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200331 Effective date of abandoning: 20211026 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |