CN103018094B - 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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- CN103018094B CN103018094B CN201210567070.6A CN201210567070A CN103018094B CN 103018094 B CN103018094 B CN 103018094B CN 201210567070 A CN201210567070 A CN 201210567070A CN 103018094 B CN103018094 B CN 103018094B
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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 experiment, is considered to a kind of effective ways of research material dynamic mechanical.The high temperature experiment bill of SHPB is divided into two types substantially: simultaneously one sample and part guided wave bar is put into sweat box heat, article (the Xia Kaiwen etc. that name is called " SHPB application of installation is in the research of measuring dynamic property of material under high temperature ", Experimental Mechanics, 1998, Vol.13,3rd phase, PP.307-313) thermostatic oven is adopted, application one-dimensional stress theory of wave propagation and heat transfer theory, revise temperature gradient field to the impact of waveform measurement, its defect is experimental data processing system more complicated, another kind to heat sample first separately, fast sample is installed in systems in which before experiment, article (the Zhang Fangju etc. that name is called " SHPB system high temperature experiment auto-assembling technique ", Experimental Mechanics, 2005, Vol.20, 2nd phase, PP.281-284) and name be called the patent of invention (patent No.: ZL200610021096.5) of " double-air path bidirectional automatic assembling device for high-temperature Hopkinson pressure bar experiment ", describe the stability etc. that this device can ensure to assemble, its defect is that the quasistatic docking of the system that realizes is with synchronous, very high accuracy requirement is had to experimental provision, in addition, patent of invention (patent No.: ZL201010230523.7) and utility model patent (patent No.: ZL201020263456.4) disclose a kind of high-temperature Hopkinson pressure bar experimental system with atmosphere protection device, the high temperature dynamic experiment in regular air can be carried out, and can protective atmosphere be provided, its defect is experimental system more complicated, and sample is for heating or sample heat together with part guided wave bar separately, all unavoidably have the intensification of local bar, thus plastic yield is there is under percussive action, 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 complete sample Fast Installation, Fast Heating, sample heating can be completed again and impact and carry out at same position, and without the need to using mechanical hook-up to move depression bar or heating furnace; Can also the quasistatic docking of completion system with synchronous, and Systematical control and data processing fast, accurate, its structure is simple, compact, processing ease, and work efficiency is high, and capital input is few, 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, high frequency induction heater is established in radome, porcelain bushing is established at this high frequency induction heater center, the central means sample of porcelain bushing, the inner of sample two ends quarter butt ceramic with two respectively is connected, the outer end of two ceramic quarter butts is connected with one end of transmission bar with incident 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 incident bar and transmission bar respectively, the stress wave signal that foil gauge records sends computing machine to and carries out data processing deliver to signal amplifier after bridge balance after, computing machine controls high frequency induction heater through temperature controller and sample heats up, infrared monitor then records after specimen temperature through thermometer hole and feeds back to temperature controller, computing machine is also electrically connected with air pump.
In order to improve combination property of the present invention, realize structure, effect optimization, its further step is:
Pottery quarter butt is column, and its external diameter is identical with the external diameter of transmission bar with incident bar.
Pottery quarter butt is tubulose, and its external diameter is identical with the external diameter of transmission bar with incident bar.
Radome is cylindrical shape and opens and closes through the cover ear place of upper and lower folding, and fixes with nut.
Nut is the manual fastening nut of butterfly.
Several spacer leg is established between high frequency induction heater and radome.
Spacer leg is that three rows three arrange at least 9.
Spacer leg is ceramic material.
The present invention adopts the porcelain bushing at Sample devices high frequency induction heater center in radome central authorities, in sample two ends, the inner of quarter butt ceramic with two is connected respectively again, the outer end of two ceramic quarter butts is connected with one end of transmission bar with incident bar respectively, foil gauge records its stress wave signal from incident bar and transmission bar respectively and delivers to through balanced bridge and sends computing machine to after signal amplifier and carry out data processing, high frequency induction heater and sample intensification is controlled through temperature controller again by computing machine, another infrared monitor then records after specimen temperature through thermometer hole and feeds back to temperature controller, the technical scheme that computing machine is also electrically connected with air pump, which overcome the complex structure that existing split hopkinson press bar experimental provision exists, operate miscellaneous, inefficiency, and mechanical hook-up need be used to move depression bar or heating furnace, the quasistatic docking of system reaches requirement with synchronization accuracy difficulty, data processing complex, the defects such as the quality of Hopkinson pressure bar experiment are had a strong impact on.
The beneficial effect that the present invention is produced compared to existing technology:
(I) the present invention is used between depression bar and sample and adds ceramic quarter butt and the technical scheme adopting high frequency induction heater to heat, and greatly improves firing rate, eliminates in heating process because of the impact of sample oxidation on material property;
(II) the present invention is used in and adds ceramic quarter butt and high frequency induction heater between depression bar and sample and to heat and in conjunction with the technical scheme of synchronous process information, eliminate miscellaneous process that will move depression bar or heating furnace before and after heating sample by mechanical hook-up, achieve sample heating and impact and carry out at same position;
(III) the present invention adopts induction heating and infrared measurement of temperature to control the technical scheme combined, and infrared monitor is through the temperature of the thermometer hole measurement sample of high frequency induction heater, and synchronous feedback is to temperature controller also automatic Control Assay heating-up temperature;
(IV) the present invention adopts induction heating and infrared measurement of temperature to control the technical scheme combined, and adopts porcelain bushing to support and protection, both can obtain good insulation, heat insulation effect, and not have environmental pollution again between high frequency induction heater and sample;
(V) the present invention adopts the technical scheme that induction heating, infrared measurement of temperature control and computer treatmenting information combines, for meeting sample stress, the further investigation straining the mutual relationship of homogeneity and load pulses form, material character and sample geometric parameter, analysis, providing and ensureing mechanism and fundamental analysis condition;
(VI) the present invention is used in and adds ceramic quarter butt between depression bar and sample and in conjunction with the technical scheme of synchronous process information, ensure that induction current only heats test button, when data processing, ignore the impact of temperature gradient field on waveform measurement, thus after avoiding experiment, the complex data of excess is dealt with the work;
(VII) the present invention adopts induction heating and infrared measurement of temperature to control the technical scheme combined, and computing machine is connected with temperature controller, both air pumps, and upon reaching a predetermined temperature, automatically starting air pump carries out impact compression test;
(VIII) the present invention is used between depression bar and sample and adds ceramic quarter butt and the technical scheme adopting high frequency induction heater to heat, and overcomes the defect that application " thermostatic oven and application one-dimensional stress theory of wave propagation and heat transfer theory ... to waveform measurement " method exists data handling system more complicated; The present invention solves data handling system preferably and simplifies data processor;
(IX) the present invention is used between depression bar and sample and adds ceramic quarter butt and the technical scheme adopting high frequency induction heater to heat, overcome application " independent in advance sample to be heated; fast sample is installed in systems in which before experiment " method exist be difficult to the system that realizes quasistatic docking with synchronous, and experimental provision is had to the defect of very high accuracy requirement; The present invention solves the quasistatic docking of system preferably with synchronous, and the precision of experimental result is substantially increased;
(X) the present invention adopts Combined integrated machine structure, make that structure is extremely simple, compact, volume is little, automatic operation controls, brisk flexibly, firing rate is fast, work efficiency is high, and No Assets is wasted, non-environmental-pollution, capital input is few, economical and practical, be applicable to the application of various testing laboratory and Hopkinson pressure bar experiment device, very easily penetration and promotion and wide market outlook.
The Hopkinson pressure bar experiment that the present invention is applicable to various testing laboratory is used; Be particularly suitable for the heating of sample in Hopkinson pressure bar experiment device and the instant process of foil gauge information.
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Accompanying drawing explanation
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 showing interconnected relationship between sample, porcelain bushing, high frequency induction heater and portable shielding cover in Fig. 1.
Fig. 3 is the flow chart of data processing block diagram in Fig. 1.
In 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 monitor, 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 base 1, high frequency induction heater 3 is established in radome 2, conveniently use and operation, radome 2 is cylindrical shape and opens and closes through cover ear 21 place of upper and lower folding, and fixes with the manual fastening nut 22 of butterfly, in order to ensure safety and the heating effect of high frequency induction heater 3, three rows three between high frequency induction heater 3 and radome 2, are established to arrange the spacer leg 20 of at least 9 ceramic material, porcelain bushing 4 is established at this high frequency induction heater 3 center, the central means sample 5 of porcelain bushing 4, and the inner of sample 5 two ends quarter butt 6 ceramic with two respectively is connected, and ceramic quarter butt 6 is column or tubulose, and its external diameter is identical with the external diameter of transmission bar 8 with incident bar 7, the outer end of two ceramic quarter butts 6 is connected with incident bar 7 one end 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 incident bar 7 and transmission bar 8 respectively, the stress wave signal that foil gauge 13 records sends computing machine 15 to deliver to signal amplifier 14 after electric bridge 23 balances after and carries out data processing, computing machine 15 controls high frequency induction heater 3 through temperature controller 16 and sample 5 heats up, infrared monitor 17 records after sample 5 temperature through thermometer hole 18 and feeds back to temperature controller 16, computing machine 15 is also 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 high-frequency induction heating method to heat test button or sample, test button 5 is placed in the alternating magnetic field that high frequency induction heater 3 produces, sample 5 inside produces induction current, thus generation Joule heat carrys out heating sample 5; Temperature controller 16, by receiving the signal of infrared monitor 17, judges the size of sample 5 temperature and predetermined temperature, when sample 5 temperature is less than predetermined temperature, continues to be energized to high frequency induction heater 3, continues heating to sample 5; When sample 5 temperature reaches predetermined temperature, the power-off of temperature controller 16 pairs of high frequency induction heaters 3, thus stop heating sample 5, computing machine 15 obtains signal, control the instant impact of bullet 10 in air gun barrel 9 to launch, enter impulse test, realization stops heating and impulse test two processes continuously and gapless order is carried out, ensure that the accuracy that test is temperature required, thus ensure that the degree of accuracy of test findings.
See accompanying drawing, specific embodiment of the invention process is: the upper folding cover ear 21 opening the radome 2 on supporting base 1, sample 5 is installed in the porcelain bushing 4 of high frequency induction heater 3 in radome 2, first load onto ceramic quarter butt 6 in sample 5 one end, incident bar 7, air gun barrel 9 and bullet 10, ceramic quarter butt 6 is loaded onto again at sample 5 other end, transmission bar 8, absorbing rod 11 and damper 12, then foil gauge 13 is affixed on respectively on incident bar 7 and transmission bar 8, simultaneously, by foil gauge 13 successively with signal amplifier 14, computing machine 15, temperature controller 16, infrared monitor 17, high frequency induction heater 3 and thermometer hole 18 are electrically connected, also computing machine 15 is electrically connected with air pump 19, finally, close the upper folding cover ear 21 of radome 2 to lower folding cover ear 21 place, tighten with the manual fastening nut 22 of butterfly, fixing, now, open infrared monitor 17 and temperature controller 16, start high frequency induction heater 3 simultaneously, sample 5 is heated, when sample 5 temperature reaches predetermined temperature, namely the power-off of temperature controller 16 pairs of high frequency induction heaters 3 stops sample heating, and send signal to computing machine 15, then computing machine 15 sends instruction booster air pump 19 simultaneously, namely carries out impact compression test to sample 5.
Claims (1)
1. a 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), high frequency induction heater (3) is established in radome (2), radome (2) is for cylindrical shape and open and close through cover ear (21) place of upper and lower folding, and fixes with the manual fastening nut of butterfly (22), three rows three are established to arrange the spacer leg (20) of at least 9 ceramic material between high frequency induction heater (3) and radome (2), porcelain bushing (4) is established at this high frequency induction heater (3) center, the central means sample (5) of porcelain bushing (4), the inner of sample (5) two ends quarter butt (6) ceramic with two respectively is connected, pottery quarter butt (6) is column or tubulose, and its external diameter is identical with the external diameter of transmission bar (8) with incident bar (7), the outer end of two ceramic quarter butts (6) is connected with incident bar (7) one end 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 incident bar (7) and transmission bar (8) respectively, the stress wave signal that foil gauge (13) records sends computing machine (15) to deliver to signal amplifier (14) after electric bridge (23) balance after and carries out data processing, computing machine (15) controls high frequency induction heater (3) through temperature controller (16) and sample (5) heats up, infrared monitor (17) then records after sample (5) temperature through thermometer hole (18) and feeds back to temperature controller (16), computing machine (15) is also electrically connected with air pump (19).
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| Application Number | Priority Date | Filing Date | Title |
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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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| 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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| CN103018094A CN103018094A (en) | 2013-04-03 |
| CN103018094B true CN103018094B (en) | 2015-02-25 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN103674738B (en) * | 2013-12-13 | 2015-12-30 | 中国人民解放军理工大学 | Under hot conditions, SHPB is automatically to bar impact loading experiment device |
| 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 |
| 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 |
| CN107121332B (en) * | 2017-06-07 | 2023-08-08 | 南京理工大学 | Auxiliary device for separated Hopkinson pressure bar test equipment |
| 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 |
| CN112903229B (en) * | 2018-12-24 | 2023-07-18 | 西北工业大学 | Loading device and loading method |
| CN110196199B (en) * | 2019-05-16 | 2022-03-04 | 西北工业大学 | High-temperature Hopkinson pressure bar test system and method synchronously assembled by utilizing bidirectional electromagnetic drive |
| 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3958666B2 (en) * | 2002-10-11 | 2007-08-15 | Ｓｒｉスポーツ株式会社 | Method for calculating energy loss in viscoelastic material, and method for evaluating energy loss of golf ball using the method |
| US20120186003A1 (en) * | 2011-01-24 | 2012-07-26 | University Of Florida Research Foundation, Inc. | Energy-absorbing system, methods of manufacturing thereof and articles comprising the same |
| CN202471505U (en) * | 2012-02-16 | 2012-10-03 | 安徽理工大学 | Protection and specimen bracket mechanism for hopkinson pressure bar test device |
| CN203101162U (en) * | 2012-12-25 | 2013-07-31 | 湖南科技大学 | Rapid-heating-type quasi-static high-temperature split Hopkinson pressure bar experiment device |
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