CN105158038A - Method for temperature rise of sample before dynamic loading process - Google Patents
Method for temperature rise of sample before dynamic loading process Download PDFInfo
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- CN105158038A CN105158038A CN201510553392.9A CN201510553392A CN105158038A CN 105158038 A CN105158038 A CN 105158038A CN 201510553392 A CN201510553392 A CN 201510553392A CN 105158038 A CN105158038 A CN 105158038A
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Abstract
The invention discloses a method for temperature rise of a sample before a dynamic loading process. A limiting loading device is arranged to applying a persistent pressure, and comprises a limiting frame fixed on an electrode plate by a plurality of fixing screw rods; a limiting rod suspended above a sample is arranged on the limiting frame, the tail end of the bottom of the limiting rod is provided with a limiting washer acting on the sample, and a pressurizing spring sleeves the limiting rod between the limiting washer and the limiting frame. After the sample is fixed, persistent pressure is applied to the sample, so that glue can be extruded from an interlayer after being melt in a temperature rise process, the sample is kept at the original position, clearances between the sample and the electrode plate of which the surface is flat by polishing as well as between the sample and a LiF window with a polished surface are eliminated due to the persistent pressure, displacement is avoided, the aim of improving a loading quality is improved, experimental data are more accurate and measuring precision is improved.
Description
Technical field
The present invention relates to the research field of the dynamic behaviors such as the phase transformation of material, constitutive relation, state equation, be specifically related to a kind of method crossing Cheng Qian sample intensification for dynamic load.
Background technology
In the dynamic behavior such as phase transformation, constitutive relation, the state equation research of material, initial temperature T
0it is Important Parameters.The difference of initial temperature directly causes the difference of mechanical condition needed for material phase transformation, causes the difference on constitutive relation, state equation expression-form.For further investigation initial temperature is on the impact of material kinetics behavior, usual needs are before the dynamic behavior utilizing the Dynamic loading technique research material such as gas big gun, Magnetic driving oblique wave loading technique, sample initial temperature state is changed, makes the temperature of sample area reach research temperature required.
Current temperature-rise period is such: sample and battery lead plate, window are adhesively fixed respectively, band is after the glue solidifies, by heating element to heating region Fast Heating, sample is made to reach the state of temperature of expection fast, applicant finds, exist in temperature-rise period expansion coefficient between sample and electrode, window, glue there are differences, even glue melt, cause may producing gap or disengaging between sample and battery lead plate, window, such temperature-rise period can cause the result of testing to there is larger error.
Summary of the invention
The object of this invention is to provide and a kind ofly cross for dynamic load the method that Cheng Qian sample heats up, solve the problem that resultant error that existing temperature-rising method causes is larger, reach the object improving experiment measuring precision.
Object of the present invention is achieved through the following technical solutions:
Cross a method for Cheng Qian sample intensification for dynamic load, comprise the following steps:
(A) preparing experiment material: battery lead plate, the cylindrical samples of polishing both surfaces, the LiF window of surface finish that surface finish is smooth;
(B) fixed sample: equal for the two sides of sample spreading glue is bonding with battery lead plate, LiF window respectively;
(C) fixtured specimen: before the glue solidifies, the region of installing at sample is carried out spacing to LiF window, sample, battery lead plate, and utilizes spacing charger to apply the pressure continued;
(D) after the glue solidifies, heating module is installed, heating object temperature is set, starts heating module, to sample area heating, and keep continu to press;
(E) when glue melts, continu to press, glue is flowed out by extruding, battery lead plate and sample, keeps between sample and window fit, and treat that sample area temperature achieves the goal temperature, stopping is heated, and completes intensification.
Temperature-rising method of the present invention is the important step in dynamic behavior research, in temperature-rise period of the prior art, sample is placed on warming site, then directly Fast Heating heats up, applicant finds that such heating mode is in fact in-problem: during due to dynamic loading, must fit tightly between sample and transparent window material, the complex loading state avoiding gap to cause, ensure the accuracy of experimental results, therefore between sample and window material, there is the glue-line that one deck is very thin to carry out fastening to sample and transparent window material, because glue-line fusing point is low, and expansion coefficient and sample and window material there are differences, temperature rise process can make glue-line expand, even melt, make to occur gap between sample and window, even mutually be shifted, destroy the integrality of loading area structure, affect the quality of whole dynamic loading procedure, gap is there is between sample and window, displacement is the principal element causing test data precision to reduce even mutually, based on such new discovery, applicant have developed the heating process of a set of improvement to overcome the defect of prior art, after fixing sample, by the pressure applying to continue to sample, make in temperature-rise period, after glue dissolves, can extrude from interlayer, and now sample also keeps original position, due to the applying pressure continued, between sample and the smooth battery lead plate of surface finish, gap is eliminated between the LiF window of sample and surface finish, avoid the generation of displacement, thus reach the object improving load mass, make the data of experiment more accurate, improve measuring accuracy.
The pressure that described applying continues is realized by spacing charger, spacing charger comprises spacing framework, spacing framework is fixed on battery lead plate by multiple standing screw, spacing framework is provided with the gag lever post be suspended on above sample, the bottom end of gag lever post is provided with the limiting gasket acted on sample, is set with pressing spring outside the gag lever post between limiting gasket and spacing framework.Spacing charger is formed by arranging a position limiting structure adapted with charger, thus can shape paired samples fixing and spacing, pressing spring can keep lasting pressure to sample, glue is extruded after thawing, avoid producing gap, and limiting gasket can keep the horizontal level of sample, avoid occurring moving.
The present invention compared with prior art, has following advantage and beneficial effect:
A kind of method crossing Cheng Qian sample intensification for dynamic load of 1 the present invention, after fixing sample, by the pressure applying to continue to sample, make in temperature-rise period, after glue dissolves, can extrude from interlayer, and now sample also keeps original position, due to the applying pressure continued, between sample and the smooth battery lead plate of surface finish, between sample and the LiF window of surface finish, eliminate gap, avoid the generation of displacement, thus reach the object improving load mass, make the data of experiment more accurate, improve measuring accuracy.
A kind of method crossing Cheng Qian sample intensification for dynamic load of 2 the present invention, avoid the example interface because temperature rise process causes and glass window material interface, produce gap and disengaging between example interface and battery lead plate, before dynamic load there is integrity violations in load region.
A kind of method crossing Cheng Qian sample intensification for dynamic load of 3 the present invention, under the prerequisite of proof load area integrity, realizes intensification size and controllable-rate.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms a application's part, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of charger of the present invention.
Mark and corresponding parts title in accompanying drawing:
1-battery lead plate, 2-heating module, 3-LiF window, 4-sample, 5-limiting gasket, 6-pressing spring, 7-standing screw, 8-gag lever post, 9-positioning framework.
Embodiment
Clearly understand for making the object, technical solutions and advantages of the present invention, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment
As shown in Figure 1, a kind of method crossing Cheng Qian sample intensification for dynamic load of the present invention, comprises the following steps:
(A) preparing experiment material: battery lead plate 1, diameter 10mm that surface finish is smooth, thick 1mm and the LiF window 3 of the cylindrical samples 4 of polishing both surfaces, surface finish;
(B) fixed sample 4: equal for the two sides of sample 4 spreading glue is bonding with battery lead plate 4, LiF window 3 respectively;
(C) fixtured specimen 4: before the glue solidifies, the region of installing at sample is carried out spacing to LiF window 3, sample 4, battery lead plate 1, and utilizing spacing charger to apply the pressure continued: spacing charger comprises spacing framework 9, spacing framework 9 is fixed on battery lead plate 1 by multiple standing screw 7, spacing framework 9 is provided with the gag lever post 8 be suspended on above sample 4, the bottom end of gag lever post 8 is provided with the limiting gasket 5 acted on sample 4, is set with pressing spring 6 outside the gag lever post 8 between limiting gasket 5 and spacing framework 9;
(D) after the glue solidifies, heating module 2 is installed, heating object temperature is set, starts heating module, to sample area heating, and keep continu to press; Heating module 2 is resistance wire ring, plastic package resistance wire or ceramic package resistance wire is selected according to heating-up temperature size, temperature monitoring module utilizes thermocouple monitoring sample area temperature rise situation, for ensureing the homogeneity of sample area temperature, power module is regulated to make temperature rise process mild as far as possible, to reach temperature equilibrium; Temperature monitoring module monitoring temperature rise process also feeds back to power module, and power module controls the speed that thermopair produces temperature rise, makes temperature increase by desired rate, has reached controlled intensification object;
(E) when glue melts, continu to press, glue is flowed out by extruding, battery lead plate 1 and sample 4, keeps between sample 4 and window fit, and treat that sample 4 district temperature achieves the goal temperature, stopping is heated, and completes intensification.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. cross a method for Cheng Qian sample intensification for dynamic load, it is characterized in that comprising the following steps:
(A) preparing experiment material: battery lead plate (1), the cylindrical samples (4) of polishing both surfaces, the LiF window of surface finish that surface finish is smooth;
(B) fixed sample (4): the equal spreading glue in two sides of sample (4) is bonding with battery lead plate (1), LiF window (3) respectively;
(C) fixtured specimen (4): before the glue solidifies, the region of installing at sample is carried out spacing to LiF window (3), sample (4), battery lead plate (1), and utilizes spacing charger to apply the pressure continued;
(D) after the glue solidifies, heating module (2) is installed, heating object temperature is set, starts heating module, to sample area heating, and keep continu to press;
(E) when glue melts, continu to press, glue is flowed out by extruding, battery lead plate (1) and sample (4), keeps fitting between sample (4) and window, and treat that sample area temperature achieves the goal temperature, stopping is heated, and completes intensification.
2. a kind of method crossing Cheng Qian sample intensification for dynamic load according to claim 1, it is characterized in that: the pressure that described applying continues is realized by spacing charger, spacing charger comprises spacing framework (9), spacing framework (9) is fixed on battery lead plate (1) by multiple standing screw (7), spacing framework (9) is provided with the gag lever post (8) being suspended on sample (4) top, the bottom end of gag lever post (8) is provided with the limiting gasket (5) acted on sample (4), gag lever post (8) outside between limiting gasket (5) and spacing framework (9) is set with pressing spring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510553392.9A CN105158038B (en) | 2015-09-02 | 2015-09-02 | A kind of method that the heating of Cheng Qian's sample is crossed for dynamic load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510553392.9A CN105158038B (en) | 2015-09-02 | 2015-09-02 | A kind of method that the heating of Cheng Qian's sample is crossed for dynamic load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105158038A true CN105158038A (en) | 2015-12-16 |
| CN105158038B CN105158038B (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510553392.9A Expired - Fee Related CN105158038B (en) | 2015-09-02 | 2015-09-02 | A kind of method that the heating of Cheng Qian's sample is crossed for dynamic load |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110784947A (en) * | 2019-10-29 | 2020-02-11 | 北京理工大学 | Heating device and heating method for heating sample before flat plate impact experiment |
Citations (5)
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| JPS62144459A (en) * | 1985-12-19 | 1987-06-27 | Ricoh Co Ltd | Complete contact type sensor |
| CN2501044Y (en) * | 2001-09-29 | 2002-07-17 | 重庆交通科研设计院 | Rotary compactor for compacting material test-piece |
| CN103008869A (en) * | 2012-12-14 | 2013-04-03 | 哈尔滨工业大学 | Electron beam pressurizing connection method for aluminum alloy and particle-reinforced aluminum matrix composite material |
| CN104141733A (en) * | 2014-07-22 | 2014-11-12 | 西安电子科技大学 | Electromagnetism dynamic loading device |
| CN204043988U (en) * | 2014-08-27 | 2014-12-24 | 中国工程物理研究院流体物理研究所 | A kind of Magnetic driving pressure apparatus of direct measurement material high voltage intensity |
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2015
- 2015-09-02 CN CN201510553392.9A patent/CN105158038B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62144459A (en) * | 1985-12-19 | 1987-06-27 | Ricoh Co Ltd | Complete contact type sensor |
| CN2501044Y (en) * | 2001-09-29 | 2002-07-17 | 重庆交通科研设计院 | Rotary compactor for compacting material test-piece |
| CN103008869A (en) * | 2012-12-14 | 2013-04-03 | 哈尔滨工业大学 | Electron beam pressurizing connection method for aluminum alloy and particle-reinforced aluminum matrix composite material |
| CN104141733A (en) * | 2014-07-22 | 2014-11-12 | 西安电子科技大学 | Electromagnetism dynamic loading device |
| CN204043988U (en) * | 2014-08-27 | 2014-12-24 | 中国工程物理研究院流体物理研究所 | A kind of Magnetic driving pressure apparatus of direct measurement material high voltage intensity |
Non-Patent Citations (1)
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| 种涛等: "磁驱动准等熵压缩下铁的相变", 《中国科学：物理学、力学、天文学》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110784947A (en) * | 2019-10-29 | 2020-02-11 | 北京理工大学 | Heating device and heating method for heating sample before flat plate impact experiment |
| CN110784947B (en) * | 2019-10-29 | 2020-10-27 | 北京理工大学 | Heating device and heating method for heating sample before flat plate impact experiment |
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| Publication number | Publication date |
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| CN105158038B (en) | 2018-01-09 |
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