CN103018094A - Device for rapid-heating quasi-static high-temperature Hopkinson pressure bar experiment - Google Patents
Device for rapid-heating quasi-static high-temperature Hopkinson pressure bar experiment Download PDFInfo
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- CN103018094A CN103018094A CN2012105670706A CN201210567070A CN103018094A CN 103018094 A CN103018094 A CN 103018094A CN 2012105670706 A CN2012105670706 A CN 2012105670706A CN 201210567070 A CN201210567070 A CN 201210567070A CN 103018094 A CN103018094 A CN 103018094A
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Abstract
The invention discloses a device for a rapid-heating quasi-static high-temperature Hopkinson pressure bar experiment. The device adopts the technical scheme that a sample is mounted in the middle of a ceramic sleeve at the center of a high-frequency induction heater in a shielding cover; the both ends of the sample are connected with the inner ends of two short ceramic bars; the outer ends of the two short ceramic bars are connected with one end of an incidence bar and one end of a transmission bar respectively; stress wave signals of strain gages are measured from the incidence bar and the transmission bar respectively, and sent to a computer for data processing through an electric bridge and an amplifier; the computer controls the warming of the high-frequency induction heater and the sample through a temperature controller; and the sample temperature is fed back to the temperature controller by another infrared monitor. The device overcomes the defects that the available device for the split Hopkinson pressure bar experiment is complicated in structure, complicated to operate, low in working efficiency and difficult in data processing; and the quality of the experiment is influenced seriously. The device is suitable for the Hopkinson pressure bar experiments in different laboratories, in particular to the heating of the sample and the immediate processing of the information of the strain gages.
Description
Technical field
The present invention relates to a kind of Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device.
Background technology
Existing separate type Hopkinson (Hopkinson) depression bar is tested, and is considered to a kind of effective ways of research material dynamic mechanical.The high temperature of SHPB experiment bill is divided into two types substantially: a kind of is sample and part guided wave bar to be put into sweat box heat simultaneously, name is called the article (Xia Kaiwen etc. of " the SHPB application of installation is in the research of measuring dynamic property of material under high temperature ", Experimental Mechanics, 1998, Vol.13, the 3rd phase, PP.307-313) adopt thermostatic oven, use one-dimensional stress theory of wave propagation and heat transfer theory, revise temperature gradient field to the impact of waveform measurement, its defective is the experimental data processing system more complicated; Another kind is separately sample to be heated first, fast sample is installed in the system before the experiment, name is called the article (Zhang Fangju etc. of " SHPB system high temperature experiment automatic Composition technology ", Experimental Mechanics, 2005, Vol.20, the 2nd phase, PP.281-284) and name be called the patent of invention (patent No.: ZL200610021096.5) of the double-air path bidirectional automatic assembling device of high-temperature Hopkinson pressure bar experiment " be used for ", describe this device and can guarantee stability of assembling etc., its defective is that the quasistatic docking of the system that realizes with synchronously, has very high accuracy requirement to experimental provision; In addition; patent of invention (the patent No.: ZL201010230523.7) and the utility model patent (patent No.: ZL201020263456.4) disclose a kind of high-temperature Hopkinson pressure bar experimental system with atmosphere protection device; can carry out conventional airborne high temperature dynamic experiment; and can provide protective atmosphere; its defective is the experimental system more complicated; and sample is that independent heating or sample heat with part guided wave bar; all unavoidably have the intensification of local bar; thereby under percussive action plastic yield occurs, the transmission of corresponding Reeb produces larger impact.
Summary of the invention
For above-mentioned situation, the object of the present invention is to provide a kind of Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device, it can finish sample Fast Installation, Fast Heating, can finish again sample heating and impact and carry out at same position, and need not to use mechanical hook-up to move depression bar or heating furnace; Quasistatic docking that can also completion system is with synchronously, and system's control and data process fast, accurate, and it is simple in structure, compact, processing ease, and high efficiency, capital input is few, and is economical and practical, is convenient to penetration and promotion.
To achieve these goals, a kind of Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device, it is included in radome peripheral hardware supporting base, establish high frequency induction heater in the radome, porcelain bushing is established at this high frequency induction heater center, the central means sample of porcelain bushing, the sample two ends link to each other with the inner of two ceramic quarter butts respectively, the outer end of two ceramic quarter butts links to each other with an end of incident bar and transmission bar respectively, the other end of incident bar connects air gun barrel and bullet, the other end of transmission bar connects absorbing rod and damper, foil gauge is affixed on respectively on incident bar and the transmission bar, the stress wave signal that foil gauge records sends computing machine to and carries out the data processing after delivering to signal amplifier behind the bridge balance, computing machine heats up through temperature controller control high frequency induction heater and sample, the infrared monitoring instrument then feeds back to temperature controller after thermometer hole records specimen temperature, computing machine also is electrically connected with air pump.
In order to improve combination property of the present invention, implementation structure, effect optimization, its further step is:
The pottery quarter butt is column, and its external diameter is identical with the external diameter of incident bar and transmission bar.
The pottery quarter butt is tubulose, and its external diameter is identical with the external diameter of incident bar and transmission bar.
Radome is that cylindrical shape and warp open and close at the cover ear place of folding up and down, and fixes with nut.
Nut is the manual fastening nut of butterfly.
Establish several spacer legs between high frequency induction heater and the radome.
Spacer leg is at least 9 of three rows, three row.
Spacer leg is ceramic material.
The present invention adopts the porcelain bushing central authorities with sample device high frequency induction heater center in radome, link to each other with the inner of two ceramic quarter butts respectively in the sample two ends again, the outer end of two ceramic quarter butts links to each other with an end of incident bar and transmission bar respectively, foil gauge records its stress wave signal and send computing machine to after balanced bridge is delivered to signal amplifier from incident bar and transmission bar respectively and carries out data and process, heated up through temperature controller control high frequency induction heater and sample by computing machine again, another infrared monitoring instrument then feeds back to temperature controller after thermometer hole records specimen temperature, the technical scheme that computing machine also is electrically connected with air pump, it has overcome the complex structure that existing split hopkinson press bar experimental provision exists, operate miscellaneous, inefficiency, and need to use mechanical hook-up to move depression bar or heating furnace, the quasistatic docking of system reaches requirement with the synchronization accuracy difficulty, data processing complex has had a strong impact on the defectives such as quality of Hopkinson pressure bar experiment.
The beneficial effect that the present invention produces compared to existing technology:
(I) the present invention is used in the technical scheme of adding ceramic quarter butt between depression bar and the sample and adopting the high frequency induction heater heating, has greatly promoted firing rate, has eliminated in the heating process because of the impact of sample oxidation on material property;
(II) the present invention is used in and adds the synchronously technical scheme of process information of ceramic quarter butt and high frequency induction heater heating and combination between depression bar and the sample, saved miscellaneous process that before and after heating sample, will move by mechanical hook-up depression bar or heating furnace, realized that sample heats and impact is carried out at same position;
(III) the present invention adopts the technical scheme that induction heating combines with infrared measurement of temperature control, and the infrared monitoring instrument is through the temperature of the thermometer hole measurement sample of high frequency induction heater, and synchronous feedback is to temperature controller and automatic Control Assay heating-up temperature;
(IV) the present invention adopts the technical scheme that the control of induction heating and infrared measurement of temperature combines, and adopts porcelain bushing to support between high frequency induction heater and the sample and protection, both can obtain to insulate preferably, heat insulation effect, does not have again environmental pollution;
(V) the present invention adopts the technical scheme that induction heating, infrared measurement of temperature control and computer treatmenting information combine, further investigation, analysis for the mutual relationship that satisfies sample stress, strain homogeneity and load pulses form, material character and sample geometric parameter provide guarantee mechanism and fundamental analysis condition;
(VI) the present invention is used in the technical scheme of adding ceramic quarter butt and the synchronous process information of combination between depression bar and the sample, guaranteed that induction current only heats test button, when data are processed, ignore temperature gradient field to the impact of waveform measurement, thereby avoided the complex data work for the treatment of of excess after the experiment;
(VII) the present invention adopts the technical scheme that the control of induction heating and infrared measurement of temperature combines, and the two is connected computing machine and temperature controller, air pump, and when reaching predetermined temperature, the automatically starting air pump carries out impact compression test;
(VIII) the present invention is used in the technical scheme of adding ceramic quarter butt between depression bar and the sample and adopting the high frequency induction heater heating, has overcome application " thermostatic oven and application one-dimensional stress theory of wave propagation and heat transfer theory ... to waveform measurement " method and has had the defective of data handling system more complicated; The present invention has solved preferably data handling system and has simplified data processor;
(IX) the present invention is used in the technical scheme of adding ceramic quarter butt between depression bar and the sample and adopting the high frequency induction heater heating, overcome application and " separately sample has been heated in advance; fast sample is installed in the system before the experiment " method and exist the quasistatic docking be difficult to the system that realizes with synchronously, and experimental provision has been had the defective of very high accuracy requirement; The present invention has solved the quasistatic docking of system preferably with synchronously, and the precision of experimental result has been improved greatly;
(X) the present invention adopts Combined integrated machine structure, make that structure is extremely simple, compact, volume is little, automatic operation control, brisk flexibly, firing rate is fast, high efficiency, No Assets waste, non-environmental-pollution, capital input is few, economical and practical, be fit to the application of various testing laboratories and Hopkinson pressure bar experiment device, very easily penetration and promotion and wide market outlook.
The present invention is fit to the Hopkinson pressure bar experiment of various testing laboratories and uses; Be particularly suitable for the heating of sample in the Hopkinson pressure bar experiment device and the instant processing of foil gauge information.
Below in conjunction with drawings and Examples the present invention is described in further detail.
Description of drawings
Fig. 1 is Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device front view of the present invention.
Fig. 2 is the lateral cross section zoomed-in view that shows interconnected relationship between sample, porcelain bushing, high frequency induction heater and the portable shielding cover among Fig. 1.
Fig. 3 is the flow chart of data processing block diagram among Fig. 1.
Among the figure: 1, supporting base, 2, radome, 3, high frequency induction heater, 4, porcelain bushing, 5, sample, 6, ceramic quarter butt, 7, incident bar, 8, transmission bar, 9, air gun barrel, 10, bullet, 11, absorbing rod, 12, damper, 13, foil gauge, 14, signal amplifier, 15, computing machine, 16, temperature controller, 17, infrared monitoring instrument, 18, thermometer hole, 19, air pump, 20, spacer leg, 21, cover ear, 22, nut, 23, electric bridge.
Embodiment
By reference to the accompanying drawings, a kind of Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device, it is included in radome 2 peripheral hardware supporting bases 1, establish high frequency induction heater 3 in the radome 2, use and operation for convenient, radome 2 is that cylindrical shape and warp open and close at cover ear 21 places of folding up and down, and fixes with the manual fastening nut 22 of butterfly; For safety and the heating effect that guarantees high frequency induction heater 3, establish the spacer leg 20 of at least 9 ceramic material of three rows, three row between high frequency induction heater 3 and the radome 2; Porcelain bushing 4 is established at these high frequency induction heater 3 centers, the central means sample 5 of porcelain bushing 4, and sample 5 two ends link to each other with the inner of two ceramic quarter butts 6 respectively, and ceramic quarter butt 6 is column or tubulose, and its external diameter is identical with the external diameter of incident bar 7 and transmission bar 8; The outer end of two ceramic quarter butts 6 links to each other with an end of incident bar 7 and transmission bar 8 respectively, the other end of incident bar 7 connects air gun barrel 9 and bullet 10, the other end of transmission bar 8 connects absorbing rod 11 and damper 12, foil gauge 13 is affixed on respectively on incident bar 7 and the transmission bar 8, the stress wave signal that foil gauge 13 records sends computing machine 15 to and carries out the data processing after delivering to signal amplifier 14 after electric bridge 23 balances, computing machine 15 heats up through temperature controller 16 control high frequency induction heaters 3 and sample 5,17 in infrared monitoring instrument feeds back to temperature controller 16 after thermometer hole 18 records sample 5 temperature, computing machine 15 also is electrically connected with air pump 19.
Shown in accompanying drawing, the principle of work of a kind of Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device of the present invention, the present invention adopts the high-frequency induction heating method that test button or sample are heated, test button 5 is placed the alternating magnetic field of high frequency induction heater 3 generations, the sample 5 inner induction currents that produce come heating sample 5 thereby produce Joule heat; Temperature controller 16 is by receiving the signal of infrared monitoring instrument 17, judges the size of sample 5 temperature and predetermined temperature, when sample 5 temperature during less than predetermined temperature, continues high frequency induction heater 3 energisings are continued to heat to sample 5; When sample 5 temperature reach predetermined temperature, 3 outages of 16 pairs of high frequency induction heaters of temperature controller, thereby stop sample 5 heating, computing machine 15 picked up signal, the instant impact emission of control air gun barrel 9 interior bullets 10 enters impulse test, realizes stopped heating and two processes of impulse test continuously and gapless is sequentially carried out, guaranteed to test temperature required accuracy, thereby guaranteed the degree of accuracy of test findings.
Referring to accompanying drawing, specific implementation process of the present invention is: the upper folding cover ear 21 of opening the radome 2 on the supporting base 1, sample 5 is installed in the porcelain bushing 4 of radome 2 interior high frequency induction heaters 3, first load onto ceramic quarter butt 6 at sample 5 one ends, incident bar 7, air gun barrel 9 and bullet 10, load onto ceramic quarter butt 6 at sample 5 other ends again, transmission bar 8, absorbing rod 11 and damper 12, then foil gauge 13 is affixed on respectively on incident bar 7 and the transmission bar 8, simultaneously, with foil gauge 13 successively with signal amplifier 14, computing machine 15, temperature controller 16, infrared monitoring instrument 17, high frequency induction heater 3 and thermometer hole 18 are electrically connected, also computing machine 15 is electrically connected with air pump 19, at last, close the upper folding cover ear 21 of radome 2 to lower folding cover ear 21 places, tighten with the manual fastening nut 22 of butterfly, fixing; At this moment, open infrared monitoring instrument 17 and temperature controller 16, start simultaneously high frequency induction heater 3, to sample 5 heating; When sample 5 temperature reached predetermined temperature, 3 outages of 16 pairs of high frequency induction heaters of temperature controller namely stopped the sample heating is sent signal simultaneously to computing machine 15, and then computing machine 15 sends instruction booster air pump 19, namely sample 5 is carried out impact compression test.
Claims (8)
1. Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device, it is characterized in that it is included in radome (2) peripheral hardware supporting base (1), establish high frequency induction heater (3) in the radome (2), porcelain bushing (4) is established at this high frequency induction heater (3) center, the central means sample (5) of porcelain bushing (4), sample (5) two ends link to each other with the inner of two ceramic quarter butts (6) respectively, the outer end of two ceramic quarter butts (6) links to each other with the end of incident bar (7) with transmission bar (8) respectively, the other end of incident bar (7) connects air gun barrel (9) and bullet (10), the other end of transmission bar (8) connects absorbing rod (11) and damper (12), foil gauge (13) is affixed on respectively on incident bar (7) and the transmission bar (8), the stress wave signal that foil gauge (13) records sends computing machine (15) to and carries out the data processing after delivering to signal amplifier (14) after electric bridge (23) balance, computing machine (15) heats up through temperature controller (16) control high frequency induction heater (3) and sample (5), infrared monitoring instrument (17) then feeds back to temperature controller (16) after thermometer hole (18) records sample (5) temperature, computing machine (15) also is electrically connected with air pump (19).
2. Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device according to claim 1 is characterized in that ceramic quarter butt (6) is column, and its external diameter is identical with the external diameter of incident bar (7) and transmission bar (8).
3. Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device according to claim 1 is characterized in that ceramic quarter butt (6) is tubulose, and its external diameter is identical with the external diameter of incident bar (7) and transmission bar (8).
4. Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device according to claim 1 is characterized in that radome (2) is that the cover ear (21) of folding is located to open and close about cylindrical shape and the warp, and fixing with nut (22).
5. Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device according to claim 1 is characterized in that nut (22) is the manual fastening nut of butterfly.
6. Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device according to claim 1 is characterized in that establishing several spacer legs (20) between high frequency induction heater (3) and the radome (2).
7. Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device according to claim 6 is characterized in that spacer leg (20) is at least 9 of three rows, three row.
8. Quick heating-type quasistatic high-temperature Hopkinson pressure bar experiment device according to claim 6 is characterized in that spacer leg (20) is ceramic material.
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| CN201210567070.6A CN103018094B (en) | 2012-12-25 | 2012-12-25 | Device for rapid-heating quasi-static high-temperature Hopkinson pressure bar experiment |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103454164A (en) * | 2013-09-13 | 2013-12-18 | 安徽理工大学 | Multi-field coupled coal rock impact loading experimental device and method |
| CN103674738A (en) * | 2013-12-13 | 2014-03-26 | 中国人民解放军理工大学 | Experimental device for automatically loading impacts on SHPB (Split Hopkinson Pressure Bar) at high temperature |
| CN105699169A (en) * | 2016-04-21 | 2016-06-22 | 安徽理工大学 | Quick heating device for high-temperature SHPB dynamic impact experiment |
| CN106198190A (en) * | 2016-07-06 | 2016-12-07 | 合肥工业大学 | A kind of Hopkinson pressure bar experiment sample collection device |
| CN106248496A (en) * | 2016-07-20 | 2016-12-21 | 西北工业大学 | Reciprocating double synchronization package systems based on Hopkinson depression bar |
| CN106442166A (en) * | 2016-09-14 | 2017-02-22 | 太原理工大学 | Device and method for high-temperature impact torsion test of hopkinson bar |
| CN107121332A (en) * | 2017-06-07 | 2017-09-01 | 南京理工大学 | Servicing unit for split hopkinson press bar testing equipment |
| CN108344552A (en) * | 2018-03-16 | 2018-07-31 | 中国工程物理研究院总体工程研究所 | Separate type experimental facilities for research structure high temperature and high speed impact response |
| CN110196199A (en) * | 2019-05-16 | 2019-09-03 | 西北工业大学 | The high temperature Hopkinson compression bar pilot system and method for synchronous assembling are driven using bi-directional electromagnetic |
| CN111271204A (en) * | 2019-11-15 | 2020-06-12 | 陕西航空电气有限责任公司 | High-temperature test method for boosting ignition electric nozzle of aircraft engine |
| CN111443036A (en) * | 2020-04-12 | 2020-07-24 | 北京工业大学 | Stress wave propagation test system in real-time high-temperature environment under traditional heating |
| CN112082881A (en) * | 2019-06-14 | 2020-12-15 | 中国航发商用航空发动机有限责任公司 | Heating device of Hopkinson bar |
| CN112903229A (en) * | 2018-12-24 | 2021-06-04 | 西北工业大学 | Loading device and loading method |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454164A (en) * | 2013-09-13 | 2013-12-18 | 安徽理工大学 | Multi-field coupled coal rock impact loading experimental device and method |
| CN103454164B (en) * | 2013-09-13 | 2016-02-03 | 安徽理工大学 | Multi-scenarios method coal petrography impact loading experiment device and experimental technique |
| CN103674738A (en) * | 2013-12-13 | 2014-03-26 | 中国人民解放军理工大学 | Experimental device for automatically loading impacts on SHPB (Split Hopkinson Pressure Bar) at high temperature |
| CN105699169A (en) * | 2016-04-21 | 2016-06-22 | 安徽理工大学 | Quick heating device for high-temperature SHPB dynamic impact experiment |
| CN106198190A (en) * | 2016-07-06 | 2016-12-07 | 合肥工业大学 | A kind of Hopkinson pressure bar experiment sample collection device |
| CN106248496B (en) * | 2016-07-20 | 2019-02-26 | 西北工业大学 | Reciprocating double synchronous package systems based on Hopkinson compression bar |
| CN106248496A (en) * | 2016-07-20 | 2016-12-21 | 西北工业大学 | Reciprocating double synchronization package systems based on Hopkinson depression bar |
| CN106442166A (en) * | 2016-09-14 | 2017-02-22 | 太原理工大学 | Device and method for high-temperature impact torsion test of hopkinson bar |
| CN107121332A (en) * | 2017-06-07 | 2017-09-01 | 南京理工大学 | Servicing unit for split hopkinson press bar testing equipment |
| CN107121332B (en) * | 2017-06-07 | 2023-08-08 | 南京理工大学 | Auxiliary device for separated Hopkinson pressure bar test equipment |
| CN108344552A (en) * | 2018-03-16 | 2018-07-31 | 中国工程物理研究院总体工程研究所 | Separate type experimental facilities for research structure high temperature and high speed impact response |
| CN108344552B (en) * | 2018-03-16 | 2023-12-29 | 中国工程物理研究院总体工程研究所 | Separated experimental equipment for researching high-temperature high-speed impact response of structure |
| CN112903229A (en) * | 2018-12-24 | 2021-06-04 | 西北工业大学 | Loading device and loading method |
| CN112903229B (en) * | 2018-12-24 | 2023-07-18 | 西北工业大学 | Loading device and loading method |
| CN110196199A (en) * | 2019-05-16 | 2019-09-03 | 西北工业大学 | The high temperature Hopkinson compression bar pilot system and method for synchronous assembling are driven using bi-directional electromagnetic |
| CN112082881A (en) * | 2019-06-14 | 2020-12-15 | 中国航发商用航空发动机有限责任公司 | Heating device of Hopkinson bar |
| CN111271204B (en) * | 2019-11-15 | 2022-03-29 | 陕西航空电气有限责任公司 | High-temperature test method for boosting ignition electric nozzle of aircraft engine |
| CN111271204A (en) * | 2019-11-15 | 2020-06-12 | 陕西航空电气有限责任公司 | High-temperature test method for boosting ignition electric nozzle of aircraft engine |
| CN111443036B (en) * | 2020-04-12 | 2023-04-07 | 北京工业大学 | Stress wave propagation test system in real-time high-temperature environment under traditional heating |
| CN111443036A (en) * | 2020-04-12 | 2020-07-24 | 北京工业大学 | Stress wave propagation test system in real-time high-temperature environment under traditional heating |
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