CN100473970C - Method for detecting viscosity and rigidity of electroluminescent rheid - Google Patents
Method for detecting viscosity and rigidity of electroluminescent rheid Download PDFInfo
- Publication number
- CN100473970C CN100473970C CNB2006100404689A CN200610040468A CN100473970C CN 100473970 C CN100473970 C CN 100473970C CN B2006100404689 A CNB2006100404689 A CN B2006100404689A CN 200610040468 A CN200610040468 A CN 200610040468A CN 100473970 C CN100473970 C CN 100473970C
- Authority
- CN
- China
- Prior art keywords
- vibrator
- test bar
- reference test
- rigidity
- support body
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The related testing device for viscosity and rigidity of field rheid comprises: a testing bar vertical arranged on frame with top end connected to the frame by an elastic element and lower end connected to the testing head, a vibrator on frame horizontal forced to the bar, a strain gage on the elastic element, an audio scanning signal generator with output end connected to the vibrator and data acquisition system. This invention has low request to condition and well testing result.
Description
Technical field
The present invention relates on the scene the pretending of a kind of energy Validity Test rheid and use the instrument of parameters variations such as viscosity, rigidity down.Be specially adapted to the measurement of each class I liquid I of viscosity 50Pas～500Pas and elastic modulus less than the solid viscosity of 1GPa.
Background technology
Current in rheological characteristics is measured, the most frequently used is rotational viscosimeter.Its ultimate principle is the principle that the rotation of drum in sample or axle is soaked in utilization, measures at the resistance that presets material under the speed, and resistance of measuring or moment of torsion are exactly kinematic viscosity, resistance is big more, then viscosity is big more, and speed and torsion-testing viscosity according to axle directly read with Pas or mPas.But this kind method needs the bigger test space, if test electricity (magnetic) effect to rheid need apply very big electric field or magnetic field, and be difficult to obtain uniform field intensity.In addition, the gauge head that immerses in the rheid is very big to the influence of electricity (magnetic), and people wish that it should reduce influence to electricity (magnetic) as much as possible.Mensuration for rheid kinematic viscosity, current general this kind of employing method: under a certain steady temperature, the liquid of measuring certain volume flows through a time of demarcating good glass capillary tube viscometer under action of gravity, the capillary constant of viscosity meter and the product of flowing time are the kinematic viscosity of fluid to be measured under this temperature.The long-pending kinetic viscosity of kinematic viscosity and synthermal density of liquid down under this temperature for liquid under this temperature.The test of this method is had relatively high expectations to the temperature field, need test under stationary temperature, and this method also needs more fluid to be measured.
Summary of the invention
The present invention seeks to design a kind of field-induced rheological body viscosity of convenient test and a kind of proving installation of rigidity.
The present invention includes support body, flexible member, reference test bar, by measuring head, vibrator that insulating material is made, reference test bar vertically is arranged on the support body, the reference test bar upper end is connected with support body by flexible member, reference test bar lower end connection measuring head; Vibrator is fixed on the support body, and vibrator laterally acts on reference test bar, pastes the bridge diagram that is made of foil gauge on flexible member, and the output line of bridge diagram is connected with dynamic strain indicator, and the output terminal of dynamic strain indicator is connected on the data acquisition system (DAS); Described vibrator is connected the output terminal of audio scan signal generator, and the output terminal of this audio scan signal generator also is connected with data acquisition system (DAS).
The principle of the invention is: connect a flexible member in the reference test bar end, adhering resistance strain sheets on flexible member constitutes bridge diagram with foil gauge, and flexible member and strain gauge bridge circuit are in conjunction with forming angular displacement sensor.Under the effect of reference test bar at vibrator, produce side shake, make flexible member produce certain deformation, thereby obtained the angular displacement signal of reference test bar.The change procedure of rheid from the liquid phase to the solid phase causes the shimmy a little amplitude variations of reference test bar when the variation of viscosity and rigidity, tests the amplitude frequency curve of the survey under the different field intensity, just can test rheid under this field intensity viscosity and rigidity numerical value.During actual the test, under fixed exciting state frequently, can obtain the resonance amplification factor β of the shimmy system of reference test bar under a certain field intensity, the rheid of corresponding different field intensity has different resonance amplification factor β, by demarcation, just can realize the test of viscosity to proving installation.Under frequency sweep exciting state, can obtain the amplitude-versus-frequency curve under the different field intensity, the change correspondence of system frequency obtains Δ ω
n,, just can realize the mensuration of rigidity by demarcation to proving installation.
During test, measuring head is immersed in the measured matter, import certain exciting voltage by the audio scan signal generator to vibrator, thereby reference test bar produces vibration and drives flexible member generation deformation under the excitation of vibrator, and by resistance strain gage the strain value of flexible member is changed into electric signal output.Signal is amplified and handle and shown by the secondary instrument, thereby can be obtained the different viscosities different response numerical value corresponding with rigidity.
The present invention can change viscosity (rigidity) variation under the effect of different electricity (magnetic) field strength of electricity (magnetic) rheid into electric signal in real time and be tested, be quick on the draw, transient response is good, can be measured the performance of instantaneous rheid from the liquid state to the solid state transformation, energy measurement is to electricity (magnetic) rheid isoparametric continuity situation of change of viscosity (rigidity) under the effect of different electricity (magnetic) field strength.In addition, because uniform electric field or field region are very little, measured stream variant reagent also requires to save as far as possible, and traditional viscosity meter can not adapt to the performance test of electro rheological fluids, and this is the purpose of this device of design.
The vibration of measuring head in rheid that the present invention adopts insulating material to make obtains corresponding signal, the present invention's proving installation is subjected to the influence of field less, the required test space is little, be easy to the realization of uniform electric field, and fluid to be measured is less, need not flowing of mass liquid, test process is simple, is subjected to extraneous factor such as temperature to influence less.
Characteristics are: 1. measuring head is made with insulating material, is subjected to the influence of field less; 2. the required test space is little, is easy to the realization of uniform electric field; 3. fluid to be measured is less, need not flowing of mass liquid, and test process is simple, is subjected to extraneous factor such as temperature to influence less; 4. carry out data acquisition with computing machine, the experimental data error of having avoided artificial reading to produce.
In addition, the middle part of reference test bar is connected with support body by volute spring, described volute spring lateral arrangement, and the direction of vibration that helical spring axial and vibrator send is parallel.Purpose provides the countermoment of measuring staff, adjusts the shimmy natural frequency of reference test bar and the sensitivity of test.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is a fundamental diagram of the present invention.
Embodiment
As shown in Figure 1, 2, measuring head 2, the vibrator 4 mainly made by support body 1, flexible member 5, reference test bar 3, by insulating material of the present invention formed.
Paste foil gauge and constitute bridge diagram 7 on flexible member 5, flexible member 5 and bridge diagram 7 are as being angular displacement sensor, and the output line of bridge diagram 7 is connected with dynamic strain indicator 8, and the output terminal of dynamic strain indicator 8 is connected on the data acquisition system (DAS) 9.The signal input part of vibrator 4 is connected on the audio scan signal generator 10, and the output terminal of audio scan signal generator 10 also is connected with data acquisition system (DAS) 9.
Audio scan signal generator 10 produces accumulation signal, accumulation signal input vibrator 4, and reference test bar 3 produces transverse vibration under the effect of vibrator 4, thereby makes flexible member 5 produce certain deformation.Resistance strain gage 7 on flexible member 5 becomes electric signal to elastically-deformable angular displacement size conversion, be transferred on the dynamic strain indicator 8 by angular displacement sensor 5, import the data acquisition system (DAS) 9 of computing machine again,, can obtain the data of measured stream variant through Computer Analysis.
In design, adopted the ANSYS finite element program that reference test bar elastic deformation, natural frequency and the vibration shape are calculated and analyzed, the influence to test data that causes is thus analyzed and is assessed.And adopting viscoelasticity to calculate module, analytical test head part and rheid effect situation have been carried out analysis-by-synthesis for the frequency of measuring head shape, rheid viscosity rigidity and vibration, amplitude etc., find preferable match condition.
It is shimmy a little that the present invention utilizes reference test bar 3 to do under the effect of exciting force, and when the field intensity change, the viscosity of rheid and rigidity produce respective change, makes the natural frequency of reference test bar system, amplitude also change thereupon.Adopt frequently fixed and frequency sweep exciting, resonance amplification factor and amplitude-versus-frequency curve during the vibration of test reference test bar, can obtain the viscosity and the rigidity numerical value of rheid under this state, this method can realize that the rheid usefulness of pretending on the scene is down by continuous change procedure medium viscosity and the rigidity isoparametric accurate mensuration of liquid phase to solid phase.Compact conformation of the present invention is quick on the draw, and transient response is good.In addition, can adopt contact or contactless vibrator, and can select the gauge head of difformity and size for use, increase the scope of application of device.Because the angular displacement sensor position is away from the electricity that applies (magnetic), and adds shield assembly, strengthened antijamming capability of the present invention greatly.Because measuring head of the present invention is less, the required test material and the test space are little, are more suitable for applying uniform electric field or magnetic field.Except electric field or magnetic field, the present invention also is applicable to tested viscosity and the rigidity rheid with other variable change such as temperature, times.
Claims (2)
1, a kind of proving installation of field-induced rheological body viscosity and rigidity, the measuring head, the vibrator that it is characterized in that comprising support body, flexible member, reference test bar, make by insulating material, reference test bar vertically is arranged on the support body, the reference test bar upper end is connected with support body by flexible member, and the reference test bar lower end connects measuring head; Vibrator is fixed on the support body, and vibrator laterally acts on reference test bar, pastes foil gauge and constitute bridge diagram on flexible member, and the output line of bridge diagram is connected with dynamic strain indicator, and the output terminal of dynamic strain indicator is connected on the data acquisition system (DAS); Described vibrator is connected the output terminal of audio scan signal generator, and the output terminal of this audio scan signal generator also is connected with data acquisition system (DAS).
2, according to a kind of proving installation of claim 1 described field-induced rheological body viscosity and rigidity, the middle part that it is characterized in that reference test bar is connected with support body by volute spring, described volute spring lateral arrangement, the helical spring concussion direction of axially sending with vibrator is parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100404689A CN100473970C (en) | 2006-05-17 | 2006-05-17 | Method for detecting viscosity and rigidity of electroluminescent rheid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100404689A CN100473970C (en) | 2006-05-17 | 2006-05-17 | Method for detecting viscosity and rigidity of electroluminescent rheid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1865915A CN1865915A (en) | 2006-11-22 |
| CN100473970C true CN100473970C (en) | 2009-04-01 |
Family
ID=37424994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100404689A Expired - Fee Related CN100473970C (en) | 2006-05-17 | 2006-05-17 | Method for detecting viscosity and rigidity of electroluminescent rheid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100473970C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252907B (en) * | 2011-06-16 | 2013-04-03 | 中国海洋大学 | Geometric stiffness test device of deep water top tension type vertical pipe |
| CN109016901B (en) * | 2016-10-21 | 2020-12-11 | 杭州琛恒科技有限公司 | Printing ink control device |
| CN109738140B (en) * | 2018-12-27 | 2021-07-20 | 中核北方核燃料元件有限公司 | Nuclear fuel assembly grillwork strip rigidity detection measuring head and use method thereof |
| CN113833826B (en) * | 2021-11-26 | 2022-05-17 | 宁波东力传动设备有限公司 | Magnetic fluid-based secondary gearbox vibration reduction system and method |
-
2006
- 2006-05-17 CN CNB2006100404689A patent/CN100473970C/en not_active Expired - Fee Related
Non-Patent Citations (6)
| Title |
|---|
| 电、磁流变及电磁复合流变测试装置. 王玉铨等.哈尔滨工业大学学报，第36卷第12期. 2004 |
| 电、磁流变及电磁复合流变测试装置. 王玉铨等.哈尔滨工业大学学报，第36卷第12期. 2004 * |
| 电磁流变液流变特性测试技术的研究进展. 陈爱军等.机械工程材料，第29卷第1期. 2005 |
| 电磁流变液流变特性测试技术的研究进展. 陈爱军等.机械工程材料，第29卷第1期. 2005 * |
| 磁流变液的流变学特性检测方法与仪器. 廖昌荣等.仪器仪表学报，第25卷第S2期. 2004 |
| 磁流变液的流变学特性检测方法与仪器. 廖昌荣等.仪器仪表学报，第25卷第S2期. 2004 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1865915A (en) | 2006-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102183440B (en) | Vibrating type viscometer | |
| US4941346A (en) | Vibration-type rheometer apparatus | |
| CN100439929C (en) | Transverse piezoelectric strain constant measuring method by piezoelectric material quasistatic method and system thereof | |
| CN100473970C (en) | Method for detecting viscosity and rigidity of electroluminescent rheid | |
| CN103528754A (en) | Measurement device for thin film pressure sensor | |
| CN104502235B (en) | Self-closing oil viscosity detecting line sensor and its method | |
| CN100541167C (en) | Three-point bending beam type apparatus for big size material damping test | |
| EP2817608B1 (en) | Apparatus and method for constant shear rate and oscillatory rheology measurements | |
| CN2890940Y (en) | d31 measuring system employing quasi-static state method | |
| JP2013113656A (en) | Vibratory physical property measurement device and method | |
| CN102252790A (en) | Flow adjustable reciprocating pump crankshaft impact load on-line real-time detection device | |
| CN110261663A (en) | String stagger arrangement pressure energy harvester test device and test method based on wind-induced vibration | |
| CN1834597A (en) | Vibrating tester of resonance sensor | |
| CN101526459A (en) | Flectrorheological material damping performance test device and method thereof | |
| CN105115858B (en) | Viscometer based on electromechanical impedance method and detection method thereof | |
| CN205175586U (en) | Commercial car distance rod axial force testing arrangement | |
| CN204008099U (en) | Damping clad plate damping capacity proving installation | |
| CN102809597A (en) | Liquid resonance sensing method and system | |
| CN1916579A (en) | 2D force sensor of dynamic friction testing for fabric | |
| CN2898812Y (en) | Tester for field flow viscosity and rigidity | |
| CN103424572A (en) | Manufacturing method for atomic power sensor, sensor, and atomic power sensor measuring apparatus and method thereof | |
| CN105865923B (en) | A kind of soft substance mechanical property measurement method and its measuring system | |
| CN2308072Y (en) | Instrument for measuring longitudinal piezoelectric strain constant by quasi-static method | |
| CN209745854U (en) | dynamic detection system for electric heating performance | |
| CN100487415C (en) | Method for measuring polymer-base foam material elastic modulus by displacement sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20120517 |