CN103217243A - Surface friction force measurement device based on graphene and using method of surface friction force measurement device - Google Patents
Surface friction force measurement device based on graphene and using method of surface friction force measurement device Download PDFInfo
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- CN103217243A CN103217243A CN2013100909927A CN201310090992A CN103217243A CN 103217243 A CN103217243 A CN 103217243A CN 2013100909927 A CN2013100909927 A CN 2013100909927A CN 201310090992 A CN201310090992 A CN 201310090992A CN 103217243 A CN103217243 A CN 103217243A
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Abstract
The invention discloses a surface friction force measurement device based on graphene and a using method of the surface friction force measurement device. A circular-truncated-cone-shaped measurement body of the device is fixed on a base, a plurality of graphene sheet layers in same areas are evenly distributed on a lateral face of the circular-truncated-cone-shaped measurement body, and copper foil electrodes are arranged corresponding to edges of arc lines on two sides of each graphene sheet layer. The using method comprises the following steps of inducing to produce voltage at two ends of a graphene material when fluid flows through the grapheme, and enabling the induced voltage and fluid wall surface friction force to form a linear relation. Size and directions of the fluid wall surface friction force are measured according to size of the induced voltage. The surface friction force measurement device is simple in structure, free of movable components, good in reliability, rapid in response due to the fact that measurement signals are electrical signals and capable of conducting dynamic friction force measurement. In addition, the measurement device can be distributed in an array to achieve measurement of an overall surface friction force field.
Description
Technical field
The present invention relates to fluid flow measurement field, refer in particular to a kind of measurement mechanism and measuring method thereof of the skin-friction force based on Graphene, it can solve the fluid wall friction measurement problem of special complicated occasion.
Background technology
The skin friction stress measurement be an important use problem also be studying a question of a basis, it not only can be used for improving transport facility performance and also can be used for describing the feature that the flow field body surface flows.
The method of surface measurements friction stree generally includes: Preston pipe, Stanton pipe, bottom dividing plate, hot line, hotting mask, laser Doppler method, sea surface oil slick etc.; Preston pipe, Stanton pipe and bottom dividing plate belong to indirect differential pressure measurement method, can't realize kinetic measurement; Hotting mask can be realized kinetic measurement, but the difficult measurement that realizes the friction force direction; Heat-pole method can be realized the friction force orientation measurement, but makes difficulty, and is fragile; Laser-Doppler is the single-point friction measurement, and very expensive; The advantage of surface oil embrane method is to realize overall friction measurement, but the value error of absolute friction force can be bigger, and can't realize the dynamic friction measurement.
Summary of the invention
For fear of with overcome above-mentioned deficiency, the purpose of this invention is to provide a kind of mantle friction force measuring device and using method based on Graphene, can realize the kinetic measurement in the complicated friction field of force.
A kind of mantle friction force measuring device based on Graphene, it comprises base, truncated cone-shaped measuring body, Graphene lamella and copper foil electrode; Described truncated cone-shaped measuring body is fixed on the base, the Graphene lamella of the some homalographics that evenly distribute in truncated cone-shaped measuring body side, the edge setting of corresponding each the Graphene lamella both sides camber line of copper foil electrode.
As improvement, described Graphene lamella can be divided into four.
Further, the side of described truncated cone-shaped measuring body and bottom surface angle are 45 °.
In addition, the present invention also provides a kind of using method of the mantle friction force measuring device based on Graphene, and the Graphene lamella is four in this device, and its use may further comprise the steps:
1) the mantle friction force measuring device is positioned in the friction force calibration system, under the situation of known incoming flow friction force size and angle, makes incoming flow flow through this device, produce bluff body and stream, calibrate friction coefficient C and coefficient of angularity;
2) calibrate out the coefficient curve of each graphene film layer region of mantle friction force measuring device;
3) the mantle friction force measuring device after will calibrating is put into and is treated fluid measured, makes to treat that fluid measured flows through measurement mechanism and produces bluff body and stream; Measure each graphene film layer region both end voltage, tentatively judge the incoming flow region according to the maximum principle of voltage; According to the voltage swing in this zone and adjacent two zones, obtain coefficient of angularity K
αWith the total voltage coefficient be K
qThe coefficient curve of calibrating out according to this district again, interpolation is obtained the size and Orientation of friction force.
Described step 1) is specially:
1.1) measure the voltage U between each graphene film layer region two end electrodes; Compare each regional voltage swing, the maximum voltage location of definition is 1 district; Be followed successively by 2,3,4 districts clockwise; Then respectively distinguish voltage and be respectively U1, U2, U3, U4;
1.2) definition 1 district and 3 district place direction be axial, defining 2 districts and 4 district place direction is normal direction; Angle is the α angle between definition friction force direction and the axis, and coefficient of angularity is K
α, definition total voltage coefficient is K
q, related formula is as follows:
Described step 2) is specially: change the α angle, calibrate out this fauna number curve, comprising: K
α-α curve, K
q-α curve;
In the described step 3), several mantle friction force measuring devices according to array arrangement execution in step 3 in treating fluid measured), can realize the measurement in the overall situation friction field of force.
The present invention is flow through the truncated cone-shaped measurement mechanism by making incoming flow, produces bluff body and streams, and by measuring the physical parameter of bluff body surface Graphene, obtains the friction force size and Orientation of fluid.Size and the voltage U between the Graphene lamella two end electrodes of local friction force τ (Pa) are linear, and relational expression is
, C is a friction coefficient in the formula, demarcates in advance according to experiment to obtain.
Compare with existing friction measurement technology and to have the following advantages: can realize the kinetic measurement of overall friction force, and not have movable member, Stability Analysis of Structures is reliable, and cost is lower; Measurement range is wide, can realize the angular measurement of 180 degree friction force directions; The formula algorithm is simply accurate.
Description of drawings
The present invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is based on the friction measurement device three-dimensional plot of Graphene
Fig. 2 is based on the friction measurement device vertical view of Graphene
Fig. 3 is based on the friction force field measurement device array distribution figure of Graphene
Number in the figure title: 1, rectangular susceptor, 2, measurement mechanism truncated cone-shaped head, 3, the Graphene lamella, 4 copper foil electrodes.
Embodiment
As depicted in figs. 1 and 2, the mantle friction force measuring device based on Graphene of the present invention comprises base 1, truncated cone-shaped measuring body 2, Graphene lamella 3 and copper foil electrode 4; Described truncated cone-shaped measuring body 2 is fixed on the base 1, the Graphene lamella 3 of the four piece homalographics that evenly distribute in truncated cone-shaped measuring body 2 sides, the edge setting of copper foil electrode 4 corresponding each Graphene lamella 3 both sides camber line.
Use of the present invention may further comprise the steps:
1) the mantle friction force measuring device is positioned in the friction force calibration system, under the situation of known incoming flow friction force size and angle, makes incoming flow flow through this device, produce bluff body and stream, calibrate friction coefficient C and coefficient of angularity K
qBe specially:
1.1) measure the voltage U between each graphene film layer region two end electrodes; Compare each regional voltage swing, the maximum voltage location of definition is 1 district; Be followed successively by 2,3,4 districts clockwise; Then respectively distinguish voltage and be respectively U
1, U
2, U
3, U
4
1.2) definition 1 district and 3 district place direction be axial, defining 2 districts and 4 district place direction is normal direction; Angle is the α angle between definition friction force direction and the axis, and coefficient of angularity is K
α, definition total voltage coefficient is K
q, related formula is as follows:
2) change the α angle, calibrate out this fauna number curve, comprising: K
α-α curve, K
q-α curve;
3) the mantle friction force measuring device after will calibrating is put into and is treated fluid measured, makes to treat that fluid measured flows through measurement mechanism and produces bluff body and stream; Measure each graphene film layer region both end voltage, tentatively judge the incoming flow region according to the maximum principle of voltage; According to the voltage swing in this zone and adjacent two zones, obtaining coefficient of angularity K α and total voltage coefficient is Kq; The coefficient curve of calibrating out according to this district again, interpolation is obtained the size and Orientation of friction force.Several mantle friction force measuring devices according to array arrangement execution in step 3 in treating fluid measured), realize the measurement in the overall situation friction field of force.
The concrete application approach of the present invention is a lot, and the above only is a preferred implementation of the present invention, should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (6)
1. the mantle friction force measuring device based on Graphene is characterized in that comprising base (1), truncated cone-shaped measuring body (2), Graphene lamella (3) and copper foil electrode (4); Described truncated cone-shaped measuring body (2) is fixed on the base (1), the Graphene lamella (3) of the some homalographics that evenly distribute in truncated cone-shaped measuring body (2) side, the edge setting of corresponding each Graphene lamella (3) the both sides camber line of copper foil electrode (4).
2. the measurement mechanism of the skin-friction force based on Graphene according to claim 1 is characterized in that described Graphene lamella (3) has four.
3. the measurement mechanism of the skin-friction force based on Graphene according to claim 1 and 2 is characterized in that the side of truncated cone-shaped measuring body (2) and bottom surface angle are 45 °.
4. the using method of the described mantle friction force measuring device based on Graphene of a claim 1, Graphene lamella (3) is four in this device, it is characterized in that may further comprise the steps:
1) the mantle friction force measuring device is positioned in the friction force calibration system, under the situation of known incoming flow friction force size and angle, makes incoming flow flow through this device, produce bluff body and stream, calibrate friction coefficient C and coefficient of angularity K
q
2) calibrate out the coefficient curve of each graphene film layer region of mantle friction force measuring device;
3) the mantle friction force measuring device after will calibrating is put into and is treated fluid measured, makes to treat that fluid measured flows through measurement mechanism and produces bluff body and stream; Measure each graphene film layer region both end voltage, tentatively judge the incoming flow region according to the maximum principle of voltage; According to the voltage swing in this zone and adjacent two zones, obtain coefficient of angularity K
αWith the total voltage coefficient be K
qThe coefficient curve of calibrating out according to this district again, interpolation is obtained the size and Orientation of friction force.
5. the using method of the mantle friction force measuring device based on Graphene according to claim 4 is characterized in that step 1) is specially:
1.1) measure the voltage U between each graphene film layer region two end electrodes; Compare each regional voltage swing, the maximum voltage location of definition is 1 district; Be followed successively by 2,3,4 districts clockwise; Then respectively distinguish voltage and be respectively U
1, U
2, U
3, U
4
1.2) definition 1 district and 3 district place direction be axial, defining 2 districts and 4 district place direction is normal direction; Angle is the α angle between definition friction force direction and the axis, and coefficient of angularity is K
α, definition total voltage coefficient is K
q, related formula is as follows:
6. the using method of the mantle friction force measuring device based on Graphene according to claim 5 is characterized in that step 2) be specially: change the α angle, calibrate out this fauna number curve, comprising: K
α-α curve, K
q-α curve;
Using method according to claim 4,5 or 6 described mantle friction force measuring devices based on Graphene, it is characterized in that in the step 3), several mantle friction force measuring devices according to array arrangement execution in step 3 in treating fluid measured), realize the measurement in the overall situation friction field of force.
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| CN201310090992.7A CN103217243B (en) | 2013-03-21 | 2013-03-21 | Surface friction force measurement device based on graphene and using method of surface friction force measurement device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338355A (en) * | 2016-08-16 | 2017-01-18 | 电子科技大学 | Graphene surface adhesive force and frictional force test method |
| CN110857894A (en) * | 2018-08-24 | 2020-03-03 | 中山大学 | Flexible mechanical sensor capable of detecting stress direction based on ordered graphene and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5929331A (en) * | 1997-01-14 | 1999-07-27 | The Texas A&M University System | Multi-directional, three component velocity measurement pressure probe |
| CN101473204A (en) * | 2006-06-14 | 2009-07-01 | 基斯特勒控股公司 | Transverse force measurement |
| CN102192805A (en) * | 2010-02-10 | 2011-09-21 | 精工爱普生株式会社 | Stress detection element, tactile sensor and grasping device |
| CN102564657A (en) * | 2012-01-16 | 2012-07-11 | 江苏物联网研究发展中心 | Graphene-based array type flexible pressure distribution sensor and preparation method thereof |
| CN102636662A (en) * | 2012-04-20 | 2012-08-15 | 南京航空航天大学 | Full-flow direction flow velocity measurement probe and measurement method thereof |
-
2013
- 2013-03-21 CN CN201310090992.7A patent/CN103217243B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5929331A (en) * | 1997-01-14 | 1999-07-27 | The Texas A&M University System | Multi-directional, three component velocity measurement pressure probe |
| CN101473204A (en) * | 2006-06-14 | 2009-07-01 | 基斯特勒控股公司 | Transverse force measurement |
| CN102192805A (en) * | 2010-02-10 | 2011-09-21 | 精工爱普生株式会社 | Stress detection element, tactile sensor and grasping device |
| CN102564657A (en) * | 2012-01-16 | 2012-07-11 | 江苏物联网研究发展中心 | Graphene-based array type flexible pressure distribution sensor and preparation method thereof |
| CN102636662A (en) * | 2012-04-20 | 2012-08-15 | 南京航空航天大学 | Full-flow direction flow velocity measurement probe and measurement method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338355A (en) * | 2016-08-16 | 2017-01-18 | 电子科技大学 | Graphene surface adhesive force and frictional force test method |
| CN110857894A (en) * | 2018-08-24 | 2020-03-03 | 中山大学 | Flexible mechanical sensor capable of detecting stress direction based on ordered graphene and preparation method thereof |
| CN110857894B (en) * | 2018-08-24 | 2021-06-04 | 中山大学 | Flexible mechanical sensor capable of detecting stress direction based on ordered graphene and preparation method thereof |
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| CN103217243B (en) | 2015-01-14 |
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