CN102507318B - Equi-biaxial residual stress applying device - Google Patents
Equi-biaxial residual stress applying device Download PDFInfo
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- CN102507318B CN102507318B CN2011103220781A CN201110322078A CN102507318B CN 102507318 B CN102507318 B CN 102507318B CN 2011103220781 A CN2011103220781 A CN 2011103220781A CN 201110322078 A CN201110322078 A CN 201110322078A CN 102507318 B CN102507318 B CN 102507318B
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- twin shaft
- bringing device
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Abstract
The invention discloses an equi-biaxial residual stress applying device, which comprises an upper clamp (1) having a first press ring (12); and a lower clamp (2) in threaded connection with the upper clamp (1) and with a second press ring (23) coaxially arranged with respect to the first press ring (12), and the first press ring and the second press ring have different diameters. The inventive equi-biaxial residual stress applying device can simultaneously obtain tensile stress and compressive stress in different numerical value ranges, has simple operation and controllable numerical value, and provides necessary conditions for residual stress formula deduction. The device of the invention overcomes the defect that the compressive stress can be obtained only by cutting the sample, and realizes zero destruction. After the equi-biaxial residual stress applying device applies stress to a material, nano-indentation test is carried out and relationship between the indentation parameter and the residual stress can be established to obtain a residual stress calculation model.
Description
Technical field
The present invention relates to the proving installation technical field, particularly a kind of twin shaft unrelieved stress bringing device that waits.
Background technology
In recent years, Nanoindentation is suggested as the mechanical analysis technology of original position and nanoscale part, has been widely used in hardness, elastic modulus and the unrelieved stress etc. of measuring material at present.But Using Nanoindentation directly " pressure " goes out residual-stress value, and the relation that need to find out between indentation parameters and unrelieved stress is finally derived formula of residual stress.During derivation formula, need a large amount of different residual-stress value.
Therefore how unstressed material is applied certain unrelieved stress, can optionally control the size of institute's stress application, and can apply simultaneously compressive stress and tension, become people and need the important technological problems of solution badly.But existing unrelieved stress bringing device can only obtain compressive stress or tension individually, and the bringing device of compressive stress cannot control the size of institute's stress application, also must carry out cutting damage to sample and just can obtain compressive stress.
Therefore, the twin shaft unrelieved stress bringing device such as how to provide, so that the stress that applies is controlled, and can not damage sample, become the important technological problems that those skilled in the art need to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of twin shaft unrelieved stress bringing device that waits, so that the stress that applies is controlled, and can not damage sample.
For achieving the above object, the invention provides following technical scheme:
A kind of twin shaft unrelieved stress bringing device that waits comprises:
Upper fixture, it has the first trim ring;
With the lower clamp that described upper fixture is threaded, it has the second trim ring, described the first trim ring and described the second trim ring coaxial arrangement, and diameter is different, and described the first trim ring and described the second trim ring are used for compressing test piece.
Preferably, in above-mentioned bringing device such as unrelieved stress such as twin shaft such as grade, the diameter of described the first trim ring is greater than the diameter of described the second trim ring.
Preferably, in above-mentioned bringing device such as unrelieved stress such as twin shaft such as grade, described upper fixture is circular configuration, and described the first trim ring is arranged at the center of described upper fixture;
Described lower clamp is circular configuration, and described the second trim ring is arranged at the center of described lower clamp.
Preferably, in above-mentioned bringing device such as unrelieved stress such as twin shaft such as grade, described upper fixture has the first outer shroud auxiliary section, the outer ring of described the first outer shroud auxiliary section is provided with external thread, described lower clamp has the second outer shroud auxiliary section, and the inner ring of described the second outer shroud auxiliary section is provided with the internal thread that coordinates with described external thread.
Preferably, in above-mentioned bringing device such as unrelieved stress such as twin shaft such as grade, described the first outer shroud auxiliary section and described the first trim ring extend to same direction, and the height of described the first trim ring is lower than the height of described the first outer shroud auxiliary section;
Described the second outer shroud auxiliary section and described the second trim ring extend to same direction.
Preferably, in above-mentioned bringing device such as unrelieved stress such as twin shaft such as grade, described upper fixture is provided with the first elongated hole, and described the first elongated hole is positioned at the inboard of described the first trim ring;
Described lower clamp is provided with the second elongated hole, and described the second elongated hole is positioned at the inboard of described the second trim ring.
Preferably, in above-mentioned bringing device such as unrelieved stress such as twin shaft such as grade, also comprise first handle, it has operating handle and at least two bearing pins that are arranged on described operating handle, and described upper fixture is provided with the pilot hole that coordinates with described bearing pin.
Preferably, in above-mentioned bringing device such as unrelieved stress such as twin shaft such as grade, also comprise second handle, it has operating handle and at least two bearing pins that are arranged on described operating handle, and described lower clamp is provided with the pilot hole that coordinates with described bearing pin.
Can find out from above-mentioned technical scheme, the twin shaft unrelieved stress bringing device that waits provided by the invention, during use, be placed in test piece between upper fixture and lower clamp,, then by screwing upper and lower fixture, makes the first trim ring and the second trim ring compress test piece.Different with the second trim ring coaxial arrangement and diameter due to the first trim ring, cause that the centre position of test piece and marginal position advance in the opposite direction respectively, to complete test by constantly the closing on of the first trim ring and the second trim ring.The present invention can screw the size of power by control, the stress that applies is controlled.The twin shaft unrelieved stress bringing device that waits provided by the invention, can obtain tension and the compressive stress of different numerical ranges simultaneously, and simple to operate, numerical values recited is controlled, for the derivation of formula of residual stress provides indispensable condition.The present invention has overcome and must cut the shortcoming that could obtain compressive stress to sample, realizes that zero destroys.After utilizing these twin shaft unrelieved stress bringing devices to apply stress to material, it is carried out nano indentation test, can set up the relation between indentation parameters and unrelieved stress, obtain residual stress calculation model.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation that waits twin shaft unrelieved stress bringing device that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the upper fixture that Fig. 2 provides for the embodiment of the present invention;
The structural representation of the lower clamp that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the first handle that Fig. 4 provides for the embodiment of the present invention;
Fig. 5 is the vertical view of Fig. 4;
The structural representation of the second handle that Fig. 6 provides for the embodiment of the present invention;
Fig. 7 is the vertical view of Fig. 6.
Embodiment
The invention discloses a kind of twin shaft unrelieved stress bringing device that waits, so that the stress that applies is controlled, and can not damage sample.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment that obtains, belong to the scope of protection of the invention.
See also Fig. 1-Fig. 3, the structural representation that waits twin shaft unrelieved stress bringing device that Fig. 1 provides for the embodiment of the present invention; The structural representation of the upper fixture that Fig. 2 provides for the embodiment of the present invention; The structural representation of the lower clamp that Fig. 3 provides for the embodiment of the present invention.
The bringing device such as unrelieved stress such as twin shaft such as grade that the embodiment of the present invention provides, comprise fixture 1 and lower clamp 2.Wherein, upper fixture 1 has the first trim ring 12, and lower clamp 2 is threaded with upper fixture 1, and it has the second trim ring 23, the first trim rings 12 and the second trim ring 23 coaxial arrangement, and diameter is different, and the first trim ring 12 and the second trim ring 23 are used for compressing test piece 3.
The twin shaft unrelieved stress bringing device that waits provided by the invention, during use, be placed in test piece 3 between upper fixture 1 and lower clamp 2,, then by screwing upper and lower fixture, makes the first trim ring 12 and 23 pairs of test pieces 3 of the second trim ring compress.Different with the second trim ring 23 coaxial arrangement and diameter due to the first trim ring 12, cause that the centre position of test piece 3 and marginal position advance in the opposite direction respectively, to complete test by constantly the closing on of the first trim ring 12 and the second trim ring 23.The present invention can screw the size of power by control, the stress that applies is controlled.The twin shaft unrelieved stress bringing device that waits provided by the invention, can obtain tension and the compressive stress of different numerical ranges simultaneously, and simple to operate, numerical values recited is controlled, for the derivation of formula of residual stress provides indispensable condition.The present invention has overcome and must cut the shortcoming that could obtain compressive stress to sample, realizes that zero destroys.After utilizing these twin shaft unrelieved stress bringing devices to apply stress to material, it is carried out nano indentation test, can set up the relation between indentation parameters and unrelieved stress, obtain residual stress calculation model.
In the present embodiment, the diameter of the first trim ring 12 is greater than the diameter of the second trim ring 23.The first trim ring 12 presses down top test piece 3 on test piece 3, the second trim rings 23, so that the downside of test piece 3 in the second trim ring 23 zones forms the compressive stress zone, the upside in the second trim ring 23 zones forms the tension zone.
Upper fixture 1 is circular configuration, and the first trim ring 12 is arranged at the center of fixture 1; Accordingly, lower clamp 2 is circular configuration, and the second trim ring 23 is arranged at the center of lower clamp 2.Upper fixture 1 has the first outer shroud auxiliary section, inboard test piece 3 spatial accommodations 14 that form in the first outer shroud auxiliary section, the outer ring of the first outer shroud auxiliary section is provided with external thread, lower clamp 2 has the second outer shroud auxiliary section, the inboard inner ring that forms test piece 3 spatial accommodation 21, the second outer shroud auxiliary sections in the second outer shroud auxiliary section is provided with the internal thread that coordinates with the external thread of the first outer shroud auxiliary section.
The first outer shroud auxiliary section and the first trim ring 12 extend to same direction, and the height of the first trim ring 12 is lower than the height of the first outer shroud auxiliary section; The second outer shroud auxiliary section and the second trim ring 23 extend to same direction.Upper fixture 1 is provided with the first elongated hole 11, the first elongated holes 11 and is positioned at the inboard of the first trim ring 12; Lower clamp 2 is provided with the second elongated hole 22, the second elongated holes 22 and is positioned at the inboard of the second trim ring 23.The first elongated hole 11 and spatial accommodation 14 coaxial arrangement; The second elongated hole 22 and spatial accommodation 21 coaxial arrangement.
See also Fig. 4 and Fig. 5, the structural representation of the first handle that Fig. 4 provides for the embodiment of the present invention; Fig. 5 is the vertical view of Fig. 4.
In order further to optimize technique scheme, the present invention also can comprise first handle, and it has operating handle 31 and at least two bearing pins 32 that are arranged on operating handle 31, and upper fixture 1 is provided with the pilot hole 13 that coordinates with bearing pin 32.Insert in the pilot hole 13 of upper fixture 1 by the bearing pin 32 with first handle, then this first handle of turn, can rotate fixture 1, easily to complete test job.
The present invention also can comprise second handle, and it has operating handle and at least two bearing pins 42 that are arranged on operating handle 41, and lower clamp 2 is provided with the pilot hole 24 that coordinates with bearing pin 42.Insert in the pilot hole 24 of lower clamp 2 by the bearing pin 42 with second handle, then this second handle of turn, can rotate lower clamp 2, easily to complete test job.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that between each embodiment, identical similar part is mutually referring to getting final product.
, to the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent for those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, realization in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. one kind is waited twin shaft unrelieved stress bringing device, it is characterized in that, comprising:
Upper fixture (1), it has the first trim ring (12);
The lower clamp (2) that is threaded with described upper fixture (1), it has the second trim ring (23), described the first trim ring (12) and described the second trim ring (23) coaxial arrangement, and diameter is different, and described the first trim ring (12) is used for compressing test piece (3) with described the second trim ring (23).
2. the twin shaft unrelieved stress bringing device that waits as claimed in claim 1, is characterized in that, the diameter of described the first trim ring (12) is greater than the diameter of described the second trim ring (23).
3. the twin shaft unrelieved stress bringing device that waits as claimed in claim 1, is characterized in that, described upper fixture (1) is circular configuration, and described the first trim ring (12) is arranged at the center of described upper fixture (1);
Described lower clamp (2) is circular configuration, and described the second trim ring (23) is arranged at the center of described lower clamp (2).
4. the twin shaft unrelieved stress bringing device that waits as claimed in claim 1, it is characterized in that, described upper fixture (1) has the first outer shroud auxiliary section, the outer ring of described the first outer shroud auxiliary section is provided with external thread, described lower clamp (2) has the second outer shroud auxiliary section, and the inner ring of described the second outer shroud auxiliary section is provided with the internal thread that coordinates with described external thread.
5. the twin shaft unrelieved stress bringing device that waits as claimed in claim 4, it is characterized in that, described the first outer shroud auxiliary section and described the first trim ring (12) extend to same direction, and the height of described the first trim ring (12) is lower than the height of described the first outer shroud auxiliary section;
Described the second outer shroud auxiliary section and described the second trim ring (23) extend to same direction.
6. the twin shaft unrelieved stress bringing device that waits as claimed in claim 5, is characterized in that, described upper fixture (1) is provided with the first elongated hole (11), and described the first elongated hole (11) is positioned at the inboard of described the first trim ring (12);
Described lower clamp (2) is provided with the second elongated hole (22), and described the second elongated hole (22) is positioned at the inboard of described the second trim ring (23).
7. the twin shaft unrelieved stress bringing device that waits as described in claim 1-6 any one, it is characterized in that, also comprise first handle, it has operating handle and at least two bearing pins (32) that are arranged on described operating handle (31), and described upper fixture (1) is provided with the pilot hole (13) that coordinates with described bearing pin (32).
8. the twin shaft unrelieved stress bringing device that waits as described in claim 1-6 any one, it is characterized in that, also comprise second handle, it has operating handle and at least two bearing pins (42) that are arranged on described operating handle (41), and described lower clamp (2) is provided with the pilot hole (24) that coordinates with described bearing pin (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103220781A CN102507318B (en) | 2011-10-20 | 2011-10-20 | Equi-biaxial residual stress applying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103220781A CN102507318B (en) | 2011-10-20 | 2011-10-20 | Equi-biaxial residual stress applying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102507318A CN102507318A (en) | 2012-06-20 |
| CN102507318B true CN102507318B (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103220781A Active CN102507318B (en) | 2011-10-20 | 2011-10-20 | Equi-biaxial residual stress applying device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439206B (en) * | 2013-09-13 | 2015-03-25 | 徐州工程学院 | Micro-indentation-based method for testing residual stress of tiny area of tough block material |
| CN110530718B (en) * | 2019-08-29 | 2021-12-17 | 江苏大学 | Double-shaft residual stress introducing device based on white light interferometry surface morphology |
| CN114509339B (en) * | 2022-01-14 | 2024-06-04 | 东南大学 | Biax residual stress calibration device that impresss |
| CN115993292B (en) * | 2023-03-23 | 2023-11-07 | 易瑞博科技(天津)有限公司 | Equibiaxial deformation mechanical test device for large-deformation elastomer material |
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| US4899581A (en) * | 1988-02-19 | 1990-02-13 | Massachusetts Institute Of Technology | Method and apparatus for the quantitative measurement of adhesion of thin films |
| CN1326548A (en) * | 1998-11-16 | 2001-12-12 | 赫尔辛基理工大学 | Method for producing defects and tensile residual stresses |
| CN2469434Y (en) * | 2001-04-04 | 2002-01-02 | 中国科学院金属研究所 | Indentation making equipment measuirng residual stress by impact impressing method |
| CN101013105A (en) * | 2007-01-15 | 2007-08-08 | 武汉晶泰科技有限公司 | Device for measuring change of material residual stress |
| CN101051018A (en) * | 2007-01-12 | 2007-10-10 | 西北工业大学 | Film residual stress measuring structure and its producing and testing method |
| WO2008096914A1 (en) * | 2007-02-06 | 2008-08-14 | Frontics, Inc. | Estimation of non-equibiaxial stress using instrumented indentation technique |
-
2011
- 2011-10-20 CN CN2011103220781A patent/CN102507318B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899581A (en) * | 1988-02-19 | 1990-02-13 | Massachusetts Institute Of Technology | Method and apparatus for the quantitative measurement of adhesion of thin films |
| CN1326548A (en) * | 1998-11-16 | 2001-12-12 | 赫尔辛基理工大学 | Method for producing defects and tensile residual stresses |
| CN2469434Y (en) * | 2001-04-04 | 2002-01-02 | 中国科学院金属研究所 | Indentation making equipment measuirng residual stress by impact impressing method |
| CN101051018A (en) * | 2007-01-12 | 2007-10-10 | 西北工业大学 | Film residual stress measuring structure and its producing and testing method |
| CN101013105A (en) * | 2007-01-15 | 2007-08-08 | 武汉晶泰科技有限公司 | Device for measuring change of material residual stress |
| WO2008096914A1 (en) * | 2007-02-06 | 2008-08-14 | Frontics, Inc. | Estimation of non-equibiaxial stress using instrumented indentation technique |
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| CN102507318A (en) | 2012-06-20 |
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