CN104406912A - Tester for testing shear strength of frozen ice on material surface - Google Patents
Tester for testing shear strength of frozen ice on material surface Download PDFInfo
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- CN104406912A CN104406912A CN201410668790.0A CN201410668790A CN104406912A CN 104406912 A CN104406912 A CN 104406912A CN 201410668790 A CN201410668790 A CN 201410668790A CN 104406912 A CN104406912 A CN 104406912A
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- fixture
- shear strength
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- frozen ice
- console
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Abstract
The invention provides a tester for testing shear strength of frozen ice on a material surface, belongs to the technical field of cold region engineering, and is used for testing the adhesive shear strength of the frozen ice on a specific material. A lifting platform is positioned between a test bed and an operating platform, is in contact with steel tubes through bearings and slides on the steel tubes up and down; a screw reducer is connected with a force sensor through the test bed; the force sensor is connected with the lifting platform; a displacement sensor is positioned on the test bed and the lifting platform; the operating platform is fixed on a base and is parallel to the base; a fixture is a stainless steel block; a hollowed area as a test sample forming area is formed in the middle of the fixture; the upper end of the fixture is connected with the lifting platform; one end of a material to be tested is fixed on the operating platform, and the other end of the material to be tested is buckled on the fixture. The test can test the adhesive shear strength of the frozen ice and any material surface; through the displacement sensor, a deformation situation at an adhering position in a stretching process is measured; the adhesive shear strengths of the frozen ice at different loading rates can be obtained.
Description
Technical field
The invention belongs to cold regions engineering technical field, relate to the shear bonding strength how accurately measured and freeze when ice is attached to other materials surface.
Background technology
In recent years, along with the development of China's aeronautical technology, improve with independent gradually in technical field, its ice impact on its flight stability and security that aircraft wing and blade surface are formed in high-altitude flight obtains increasing concern.The domestic relevant mechanical property test also not freezing ice for this high-altitude at present.
Summary of the invention
The invention provides the shear strength test instrument that a kind of ice freezes at material surface, sample is formed by freezing (area is known) in fixture that ice is created on material surface, tested sample is mounted to the operator's console place freezing ice shear bonding strength test instrument, sample bonding direction is horizontal direction, the loading direction of operator's console is vertical direction, the shear action to sample is formed with this, and by the size of force snesor determination loading force, afterwards the stress suffered by sample is determined, utilize simultaneously displacement transducer record test in displacement variable with this to determine the strain of sample, obtain the stress-strain relation of style in shear history.This device also achieves by controlling motor speed controlled loading speed, obtains stress-strain relation in different loading speed situation; The terraced interface of fixture and stationary installation improves the speed changing testpieces, improves test efficiency; The groove design of fixture provides the perpendicularity that high-precision bond area controls to also ensure that shearing force and bonding direction simultaneously.
The shear strength test instrument that ice freezes at material surface, comprises change speed motor, leading screw reductor, shaft coupling, testing table, lifting table, displacement transducer, operator's console, force snesor and fixture.Change speed motor is connected with leading screw reductor by shaft coupling, and testing table passes through steel pipe support.Lifting table is positioned between testing table and operator's console, is contacted with steel pipe by bearing, and slides up and down at steel pipe.Leading screw reductor is connected with force snesor by testing table, and force snesor is connected with lifting table.Displacement transducer is between testing table and lifting table.Operator's console is fixed on base, with base keeping parallelism.Fixture is stainless block, and there is hollow out position, intermediate portion, and as sample forming region, fixture upper end is connected with lifting table; Detected materials one end is fixed on operator's console, and other end button is on fixture.
To be fixed on operator's console in fixture, detected materials and the sample that generates between the two, change speed motor is by the running of coupling band movable wire thick stick reductor, control lifting table by force snesor to rise, force snesor is in order to measure the size of the power on sample that is carried in, the distance that displacement sensor lifting table rises also is the distance of sample movement in the vertical direction.The climbing speed of lifting table can be controlled, in order to determine the size of loading speed by the speed controlling change speed motor.In test, change speed motor is not stopped transport work, until fixture is separated with detected materials, the power that obtains during separation is maximum shear stress.Fixture button to carrying out ice making in detected materials, and due to holder contacts smooth surface, friction factor is very little, and test in loading procedure and there is not extruding force, can not produce friction force interference test result in test.The design advantage of this fixture is by ice size in the geomery Control release of void region, and to effectively prevent the interference of friction force.This shear strength test instrument is used for measuring the shear resistance that a kind of ice freezes at material surface, wherein detected materials, and its surfaceness can require according to different tests and change.
The present invention can form shear action to freezing ice with the material surface be attached, shear rate can be controlled by regulating motor speed, the stressing conditions in test shear history can be measured by force snesor, the deformation of bonding part in drawing process can be measured by displacement transducer.
Device of the present invention can measure the shear bonding strength freezing ice and other materials, and then studies and simulate the mechanical property freezing ice in actual work, for the Structural Design in cold regions provides call parameter, for aircraft safety design provides coherent reference.
Accompanying drawing explanation
Fig. 1 is the structural representation that material surface of the present invention freezes the shear bonding strength test macro of ice.
Fig. 2 is the structural representation that material surface of the present invention freezes the shear bonding strength test macro fixture of ice.
In figure: 1 change speed motor; 2 leading screw reductors; 3 shaft couplings; 4 testing tables; 5 lifting tables; 6 fixtures; 7 samples; 8 displacement transducers; 9 operator's console; 10 force snesor; 11 detected materials; 12 void region.
Embodiment
Below in conjunction with accompanying drawing and technical scheme, to further illustrating the specific embodiment of the present invention.
In Fig. 1,6 fixtures are lain in a horizontal plane in the groove of 11 detected materials by the present invention, generate in the groove of 6 fixtures and freeze ice and form 7 samples, 6 fixtures freezed together and 11 detected materials are arranged between 9 operator's console and 5 lifting tables by ladder-type trough, 1 change speed motor is started after 7 samples are fixing, 1 change speed motor is connected with 2 leading screw reductors by 3 shaft couplings, 2 leading screw reductors produce lift effect to 5 lifting tables, 9 operator's console maintain static, and the lift effect of 5 lifting tables to 6 fixtures finally forms the shear action to freezing bonding part between ice and 11 detected materials surfaces.
In Fig. 1, the present invention by the displacement of 5 lifting table vertical directions in 8 displacement sensor shear histories, the size of shearing force in 10 force sensor measuring processs of the test.
In Fig. 1, the present invention regulates shear rate by 1 change speed motor.
In Fig. 2, the present invention is by the bond area of the area control style of the void region of 6 fixtures.
Claims (1)
1. the shear strength test instrument that freezes at material surface of ice, it is characterized in that, this shear strength test instrument comprises change speed motor, leading screw reductor, shaft coupling, testing table, lifting table, displacement transducer, operator's console, force snesor and fixture; Change speed motor is connected with leading screw reductor by shaft coupling, and testing table passes through steel pipe support.Lifting table is positioned between testing table and operator's console, is contacted with steel pipe by bearing, and slides up and down at steel pipe; Leading screw reductor is connected with force snesor by testing table, and force snesor is connected with lifting table; Displacement transducer is between testing table and lifting table; Operator's console is fixed on base, with base keeping parallelism; Fixture is stainless block, position, intermediate portion hollow out, and as sample forming region, fixture upper end is connected with lifting table; Detected materials one end is fixed on operator's console, and other end button is on fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410668790.0A CN104406912A (en) | 2014-11-20 | 2014-11-20 | Tester for testing shear strength of frozen ice on material surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410668790.0A CN104406912A (en) | 2014-11-20 | 2014-11-20 | Tester for testing shear strength of frozen ice on material surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104406912A true CN104406912A (en) | 2015-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410668790.0A Pending CN104406912A (en) | 2014-11-20 | 2014-11-20 | Tester for testing shear strength of frozen ice on material surface |
Country Status (1)
| Country | Link |
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| CN (1) | CN104406912A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222746A (en) * | 2015-11-02 | 2016-01-06 | 柳州东方工程橡胶制品有限公司 | A kind of method for quick of rubber support Ultimate Shear strain |
| CN106248574A (en) * | 2016-07-25 | 2016-12-21 | 哈尔滨工业大学 | A kind of Portable type ice Bituminous Pavement cohesive force sensing equipment and method |
| CN108279179A (en) * | 2018-01-31 | 2018-07-13 | 中国兵器工业第五九研究所 | Constant, the fatigue stress experimental rig of one kind and test method |
| CN113049383A (en) * | 2021-03-17 | 2021-06-29 | 北京理工大学 | Testing device and testing method for glued test piece |
| CN113092365A (en) * | 2021-04-12 | 2021-07-09 | 深圳大学 | Device and method for measuring interface bonding stress |
| CN113848129A (en) * | 2021-09-13 | 2021-12-28 | 哈尔滨工程大学 | Ice accretion shear peel strength testing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060236778A1 (en) * | 2005-04-20 | 2006-10-26 | The Magni Group, Inc. | Measuring assembly for ice adhesion |
| CN202351164U (en) * | 2011-12-09 | 2012-07-25 | 北京天泰兴工程科技有限公司 | Microprocessor control device for testing ice-coating adhesion on surface of material |
| CN103760106A (en) * | 2014-01-28 | 2014-04-30 | 国家电网公司 | Icing mold as well as device and method for measuring icing shear force thereby |
| CN103776763A (en) * | 2014-01-13 | 2014-05-07 | 南京航空航天大学 | Experiment device and measurement method for measuring adhesive power of rotary cylindrical ice and ice layer |
-
2014
- 2014-11-20 CN CN201410668790.0A patent/CN104406912A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060236778A1 (en) * | 2005-04-20 | 2006-10-26 | The Magni Group, Inc. | Measuring assembly for ice adhesion |
| CN202351164U (en) * | 2011-12-09 | 2012-07-25 | 北京天泰兴工程科技有限公司 | Microprocessor control device for testing ice-coating adhesion on surface of material |
| CN103776763A (en) * | 2014-01-13 | 2014-05-07 | 南京航空航天大学 | Experiment device and measurement method for measuring adhesive power of rotary cylindrical ice and ice layer |
| CN103760106A (en) * | 2014-01-28 | 2014-04-30 | 国家电网公司 | Icing mold as well as device and method for measuring icing shear force thereby |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222746A (en) * | 2015-11-02 | 2016-01-06 | 柳州东方工程橡胶制品有限公司 | A kind of method for quick of rubber support Ultimate Shear strain |
| CN105222746B (en) * | 2015-11-02 | 2017-11-21 | 柳州东方工程橡胶制品有限公司 | A kind of quick determination method of rubber support Ultimate Shear strain |
| CN106248574A (en) * | 2016-07-25 | 2016-12-21 | 哈尔滨工业大学 | A kind of Portable type ice Bituminous Pavement cohesive force sensing equipment and method |
| CN108279179A (en) * | 2018-01-31 | 2018-07-13 | 中国兵器工业第五九研究所 | Constant, the fatigue stress experimental rig of one kind and test method |
| CN113049383A (en) * | 2021-03-17 | 2021-06-29 | 北京理工大学 | Testing device and testing method for glued test piece |
| CN113092365A (en) * | 2021-04-12 | 2021-07-09 | 深圳大学 | Device and method for measuring interface bonding stress |
| CN113848129A (en) * | 2021-09-13 | 2021-12-28 | 哈尔滨工程大学 | Ice accretion shear peel strength testing device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |