CN1073766A - Real-time viscoelastic Poisson's ratio non-contact measuring instrument - Google Patents
Real-time viscoelastic Poisson's ratio non-contact measuring instrument Download PDFInfo
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- CN1073766A CN1073766A CN 91111812 CN91111812A CN1073766A CN 1073766 A CN1073766 A CN 1073766A CN 91111812 CN91111812 CN 91111812 CN 91111812 A CN91111812 A CN 91111812A CN 1073766 A CN1073766 A CN 1073766A
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- test specimen
- poisson
- loading
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- viscoelastic
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- 238000012360 testing method Methods 0.000 claims abstract description 25
- 238000012546 transfer Methods 0.000 claims abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000006200 vaporizer Substances 0.000 claims description 3
- 238000013480 data collection Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 230000000930 thermomechanical effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 229920000965 Duroplast Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005305 interferometry Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000003190 viscoelastic substance Substances 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of real-time viscoelastic Poisson's ratio non-contact measuring instrument with high cryostat, is made up of with disposal system agent structure, test specimen length thickness adjustment structure, test specimen clamping structure, loading and loading transfer structure, sensor fixing structure, high cryostat, and warm thermometric control system and experimental result collection in real time.Can be used to measure under different temperatures and the tensile load condition, Viscoelastic Poisson's Ratio is measured in transverse strain and longitudinal strain and with Changing Pattern and the numerical value of loading time.If different anchor clamps are installed, also can be carried out static shear, bending and compression experiment.This technology also portable to other thermomechanical analyzer.
Description
The present invention is a kind of real-time viscoelastic Poisson's ratio non-contact measuring instrument with high cryostat.
The elasticity Poisson ratio of measuring metallic materials, can on universal testing machine, carry out, but to viscoelastic materials such as solid superpolymers, it carries under the effect outside constant will produce lax or creep, and mechanical property and loading time and temperature have strong dependence, measures Viscoelastic Poisson's Ratio and still sees desirable surveying instrument in the end, at present to soft test specimen or duroplasts because test specimen deliquescing under the high temperature, adopt the contact measurement technology, its transversely deforming measurement result is very unreliable, even abnormal phenomena occurs.External photograph gridding method, the Michelson-optical interferometry of adopting measured Poisson ratio, and its experimental result is scattered big, low precision, continuous coverage automatically again.
In order to overcome above-mentioned deficiency.The purpose of this invention is to provide a kind of real-time viscoelastic Poisson's ratio non-contact measuring instrument, this instrument is under high low normal temp and different stretch load-up condition, can measure test specimen transverse strain and longitudinal strain in real time and with Changing Pattern and the numerical value of loading time, measure Viscoelastic Poisson's Ratio, if different shearings, bending, compression clamp are installed, also can carry out static shear, bending and compression experiment.
The present invention mainly is made up of agent structure, test specimen length thickness governor motion, test specimen clamping structure, loading and loading transfer structure, sensor fixing structure, high cryostat, and warm thermometric control system and experimental data collection and disposal system.Agent structure is a left and right sides bearing 3,29, base 32 and governor motion seat 35 are formed, test specimen length thickness governor motion is made up of micrometer caliper 1, screw mandrel 5, bung flange 2, traveller 36, angled-lift splits 18, left anchor clamps 4, load with the loading transfer structure and form by nylon rope 11 and power transmission guide cylinder 10, transverse axis 22 and bearing combined isolator 23, hang with counterweight 12 on the nylon rope, minimum load is 100 grams, and maximum load is 5 kilograms.The test specimen clamping structure mainly by clamp head 8 and supporting plate wherein, form by strap and adjustable splint.Two lateral pickups 20 and one or two length travel sensors 6 are screwed on the support 19 of sensor, and sensor stand links to each other with angled-lift splits 18 in the governor motion again.High cryostat, and warm thermometric control system be mainly by high cryostat, 9, and dividing plate 33 with holes is store hot heat-dissipating aluminium plate 7 and 34, temperature sensor 31, liquid nitrogen bottle 17, support 16, low-temperature solenoid valve 15, Cooling and heating blower 13, vaporizer 14 and temperature and surveyed temperature controller and form.The ordinary test temperature range is-50 ℃～+ 50 ℃, the highest test temperature can reach+and 100 ℃, accuracy of temperature control is ± 0.3 ℃～± 0.5 ℃.
Characteristics of the present invention are:
1, little load small strain good linearity, external applied load adopt counterweight to load, and stable performance is accurate, no-load weight zero point drift problem;
2, real-time non-cpntact measurement has solved the insecure difficult problem of the soft test specimen transversely deforming of contact measurement;
3, deformation measurement resolution height is 0.1 μ m;
4, be with high cryostat, and warm thermometric control system, can carry out the height cold test;
5, compact conformation, easy to use.
Structure diagram of the present invention is provided by accompanying drawing 1,2.
Fig. 1 is the real-time viscoelastic Poisson's ratio non-contact measuring instrument front view.
Fig. 2 is the real-time viscoelastic Poisson's ratio non-contact measuring instrument right view.
Primary structure is among the figure: micrometer caliper 1, bung flange 2, left support abutment 3, left side anchor clamps 4, screw mandrel 5, length travel sensor 6, heat radiator 7, clamp head 8, high cryostat, 9, power transmission guide cylinder 10, nylon rope 11, counterweight 12, Cooling and heating blower 13, vaporizer 14, low-temperature solenoid valve 15, support 16, liquid nitrogen bottle 17, angled-lift splits 18, sensor stand 19, transversal displacement sensor 20, test specimen 21, transverse axis 22, bearing combined isolator 23, gib screw 24, fixed mount 25, support plate 26, support pin 27, counterweight saddle 28, right support abutment 29, gusset 30, temperature sensor 31, base 32, dividing plate 33 with holes, store hot heat-dissipating aluminium plate 34, governor motion seat 35, traveller 36.
During test, at first pre-thermal instrument is provided with the test temperature value, and test specimen 21 is fixed, and regulates the initial position of two transversal displacement sensors 20 and length travel sensor 6.Survey temperature controller control calorifier blowing hot-air by temperature during hot test, low-temperature test surveys the temperature controller control nitrogen electromagnetism drip trap switching time by temperature and rule reaches set temperature value.The rotation weight tray is given the test specimen imposed load, after the amplification of signal process and AD conversion that displacement transducer records, by the computer data acquiring record.The result of certain solid propellant Viscoelastic Poisson's Ratio υ (t) that actual measurement is handled when+20 ℃ and+40 ℃ is as follows:
Claims (1)
1, a kind of real-time viscoelastic Poisson's ratio non-contact measuring instrument, mainly by agent structure, test specimen length thickness governor motion, the test specimen clamping structure, load and the loading transfer structure, sensor fixing structure, high cryostat, and warm thermometric control system and experimental data collection and disposal system are formed, agent structure is by a left side, right support abutment 3,29, base 32 and governor motion seat 35 are formed, test specimen length thickness governor motion is by micrometer caliper 1, screw mandrel 5, bung flange 2, traveller 36, angled-lift splits 18 is formed, the test specimen clamping structure is by clamp head 8, strap and adjustable splint are formed, loading and loading transfer structure are by nylon rope 11, power transmission guide cylinder 10, transverse axis 22 and bearing combined isolator 23 are formed, be fixed with two transversal displacement sensors 20 and one or two length travel sensors 6 on the sensor stand 19, sensor stand 19 links to each other with angled-lift splits 18, dress liquid nitrogen bottle 17 on the support 16, Cooling and heating blower 13 and vaporizer 14, low-temperature solenoid valve 15, high cryostat, 9, on the high cryostat,, down, before, after be equipped with the storage hot heat-dissipating aluminium plate 7,34, dividing plate 33 with holes is equipped with temperature sensor 31 in the high cryostat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91111812 CN1073766A (en) | 1991-12-25 | 1991-12-25 | Real-time viscoelastic Poisson's ratio non-contact measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91111812 CN1073766A (en) | 1991-12-25 | 1991-12-25 | Real-time viscoelastic Poisson's ratio non-contact measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1073766A true CN1073766A (en) | 1993-06-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91111812 Pending CN1073766A (en) | 1991-12-25 | 1991-12-25 | Real-time viscoelastic Poisson's ratio non-contact measuring instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN1073766A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295493C (en) * | 2003-12-16 | 2007-01-17 | 中国科学院电工研究所 | Bending property detector for high temperature superconductive ribbon |
| CN100405039C (en) * | 2004-04-05 | 2008-07-23 | 陈彩多 | Multifunctonal low temp tester for rubber |
| CN101858839B (en) * | 2010-05-12 | 2011-12-07 | 中国船舶重工集团公司第七一一研究所 | Viscous-elastic material constitutive test device and test method thereof |
| CN101441151B (en) * | 2007-11-20 | 2013-02-27 | 宝理塑料株式会社 | Method for testing poisson ratio of material |
| CN106596263A (en) * | 2016-12-02 | 2017-04-26 | 哈尔滨工程大学 | In-plane tensioning, sharing and bending loading device for super-elastic soft plates |
| CN106840900A (en) * | 2017-03-31 | 2017-06-13 | 沈阳建筑大学 | The research structure experimental rig and method of rod member Subjected To Compression, Bending, Shear Hysteresis Behavior |
| CN107063848A (en) * | 2017-05-11 | 2017-08-18 | 大连理工大学 | Four-point bending loading device and its loading method in high temperature pipe |
| CN107588954A (en) * | 2017-10-31 | 2018-01-16 | 慈兴集团有限公司 | It is a kind of to bear to tilt the testing machine of loading force for check bearing |
| CN107664603A (en) * | 2017-10-27 | 2018-02-06 | 易瑞博科技（北京）有限公司 | The high-elastic isometric cupping machine of elastomer material |
| CN110514689A (en) * | 2019-08-28 | 2019-11-29 | 湖北三江航天江河化工科技有限公司 | The test method of HTPB propellant glass transition temperature |
-
1991
- 1991-12-25 CN CN 91111812 patent/CN1073766A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295493C (en) * | 2003-12-16 | 2007-01-17 | 中国科学院电工研究所 | Bending property detector for high temperature superconductive ribbon |
| CN100405039C (en) * | 2004-04-05 | 2008-07-23 | 陈彩多 | Multifunctonal low temp tester for rubber |
| CN101441151B (en) * | 2007-11-20 | 2013-02-27 | 宝理塑料株式会社 | Method for testing poisson ratio of material |
| CN101858839B (en) * | 2010-05-12 | 2011-12-07 | 中国船舶重工集团公司第七一一研究所 | Viscous-elastic material constitutive test device and test method thereof |
| CN106596263B (en) * | 2016-12-02 | 2019-04-23 | 哈尔滨工程大学 | A kind of interior draw of super-elasticity flexible sheet material plane cuts curved loading device |
| CN106596263A (en) * | 2016-12-02 | 2017-04-26 | 哈尔滨工程大学 | In-plane tensioning, sharing and bending loading device for super-elastic soft plates |
| CN106840900A (en) * | 2017-03-31 | 2017-06-13 | 沈阳建筑大学 | The research structure experimental rig and method of rod member Subjected To Compression, Bending, Shear Hysteresis Behavior |
| CN106840900B (en) * | 2017-03-31 | 2024-01-30 | 沈阳建筑大学 | Test device and method for researching compression-bending-shearing hysteresis performance of rod piece for structure |
| CN107063848A (en) * | 2017-05-11 | 2017-08-18 | 大连理工大学 | Four-point bending loading device and its loading method in high temperature pipe |
| CN107063848B (en) * | 2017-05-11 | 2023-05-12 | 大连理工大学 | Four-point bending loading device in high-temperature pipe and loading method thereof |
| CN107664603A (en) * | 2017-10-27 | 2018-02-06 | 易瑞博科技（北京）有限公司 | The high-elastic isometric cupping machine of elastomer material |
| CN107588954A (en) * | 2017-10-31 | 2018-01-16 | 慈兴集团有限公司 | It is a kind of to bear to tilt the testing machine of loading force for check bearing |
| CN107588954B (en) * | 2017-10-31 | 2024-02-09 | 慈兴集团有限公司 | Testing machine for testing bearing inclined loading force |
| CN110514689A (en) * | 2019-08-28 | 2019-11-29 | 湖北三江航天江河化工科技有限公司 | The test method of HTPB propellant glass transition temperature |
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