CN107014682A - A kind of loading device and method suitable for three-dimensional composite crack growth test - Google Patents
A kind of loading device and method suitable for three-dimensional composite crack growth test Download PDFInfo
- Publication number
- CN107014682A CN107014682A CN201710217999.9A CN201710217999A CN107014682A CN 107014682 A CN107014682 A CN 107014682A CN 201710217999 A CN201710217999 A CN 201710217999A CN 107014682 A CN107014682 A CN 107014682A
- Authority
- CN
- China
- Prior art keywords
- test
- test specimen
- crack
- loading device
- dimensional composite
- 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.)
- Pending
Links
- 238000011068 load Methods 0.000 title claims abstract description 50
- 239000011165 3D composite Substances 0.000 title claims abstract description 18
- 206010011376 Crepitations Diseases 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims description 13
- 238000002161 passivation Methods 0.000 claims description 2
- 238000002789 length control Methods 0.000 claims 1
- 230000003068 static Effects 0.000 abstract description 2
- 230000000051 modifying Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000003892 spreading Methods 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
- G01N2203/0066—Propagation of crack
Abstract
The invention discloses a kind of loading device and method suitable for three-dimensional composite crack growth test, including Internal jigging, outer clamp, test specimen and test system, wherein Internal jigging is made up of circular bushing and bearing pin；Outer clamp is made up of c-type arc arm plate, plectane, bolt, pin and experiment machine grip holder；Test system includes high-power microscope, microscope reading wand, testing machine, controlling switch and test processes system composition.By angle of assembling of the alignment jig on testing machine, static loading or the fatigue loading experiment of single I, II, type III crackle and its three-dimensional composite crackle of polytype combination can be realized respectively.The high-power microscope for being installed on test specimen crack surface both sides can expanded configuration of the real-time monitored three-dimensional cracks including length and angle.The present invention has the advantages that flexible modulation crack-type and real-time monitored Crack Extension form.
Description
Technical field
The present invention relates to a kind of loading device and method suitable for three-dimensional composite crack expansion test, list can be both realized
The compound three-dimensional cracks that I, II, III polytypes are combined can be entered by one I, II, the expanding test of type III three-dimensional cracks again
Row extension test, the spreading rate and propagation direction of crackle can be obtained by the related data of record, is mainly used in breaking
Split, tired field.
Background technology
In modern project, structure bears the effect of the power such as tension and compression, plane shear, Antiplane Shear, easily in not up to material
Just failed during material design strength, this failure is by splitting that material microdefect in itself and material are produced during service
Caused by line, in order to prevent this sudden destruction, it is to be understood that propagation direction of the three-dimensional cracks under the effect of compound load
And spreading rate.In practical structures, component can bear different types of load, produce Mixed Mode Crack.Therefore this kind of loading
Device requirement can study single type crackle, and energy study of various Mixed Mode Crack, while also to realize adding for different angles
Carry.
All kinds of parts in engineering are all 3D solids, and dimensional effect has a huge impact to research association, therefore in reality
3D solid test specimen need to be used when testing design, this accuracy to experiment has very important meaning.
At present, both at home and abroad there is not yet about such three-dimensional cracks loading device for testing and the reported in literature of method.
The content of the invention
The technical problem to be solved in the present invention is：Overcoming the deficiencies in the prior art, there is provided three-dimensional under a kind of compound loading
The loading device and method of crack growth test, simulation component bear different tension and compression, plane shear and Antiplane Shear effect,
The propagation direction and spreading rate of crackle are measured and analyzed, reliable test data is provided to solve component failure.
The invention solves the problems that the technical scheme that its technical problem is used is：One kind is applied to three-dimensional composite Crack Extension
The loading device and method of test, described loading device include Internal jigging, outer clamp, test specimen and test system.
Internal jigging is made up of circular bushing and bearing pin, and 24 are formed with the circular slab of circular bushing base into 15 ° of isogonism radial distributions
Through hole, to be connected with outer clamp, realize have on the regulation of angle, the cylinder of circular bushing two pairs it is orthogonal logical
Hole, the sleeve for test specimen being connected to by bearing pin circular bushing；Outer clamp is by c-type arc arm plate, plectane, spiral shell
Bolt, pin and experiment machine grip holder composition, 7 are dispersed with c-type arc arm plate into 15 ° of angularly radially-arranged circular holes, for
Testing machine is connected, and 24 are dispersed with plectane into 15 ° of angularly radially-arranged through holes, these through holes with it is circular in Internal jigging
The through hole of bushing is bolted, and c-type arc arm plate and plectane are used and be welded；Test specimen entire length is 142mm, two
End is cylinder, convenient to be connected with circular bushing, and centre is cuboid, and crackle will be prefabricated in the progress of this block region, in order to eliminate
Stress concentration, uses chamfered transition between cylinder and cuboid；Test system includes high-power microscope, microscope reading wand, examination
Test machine, controlling switch and test processes system composition；After Internal jigging and outer clamp are assembled, installed in testing machine
On, the position of regulation high-power microscope makes its lens barrel be directed at crackle end face, facilitates the extension length that crackle is recorded after Crack Extension.
Described circular bushing barrel bore need to be bigger than the diameter of test specimen, just can guarantee that test specimen and circular bushing
It can be assembled, but the space reserved also should not be too big, and otherwise test specimen will be produced in bushing and rocked, and influence the test of experiment
Precision.The depth of circular bushing cylinder also should be slightly bigger than the cylindrical length of test piece end simultaneously, to make up circular bushing cylinder
The error of upper vertical through hole.
The described test specimen crackle prefabricated in processing, its sophisticated place occurs than more serious passivation, therefore adds
Man-hour prefabricated crack tip and the distance that 2-3mm is left in the middle part of test specimen, this segment distance will be added using I types on testing machine
The mode of load carries out presplitting, could then carry out next step experiment.
The thickness of described c-type arc arm plate should be determined according to the spacing of experiment machine grip holder, about small 2-3mm,
Like this it is ensured that fixture, which is arranged on testing machine, will not produce bias-load.
During experiment test, it is ensured that be applied to by testing machine grip holder two ends outer clamp load line pass through it is tested
The central point of part.
The present invention has advantages below compared with prior art：
(1) experimental provision of the present invention can not only realize single I, II, the expanding test of III basic model three-dimensional cracks,
Experiment can be extended to the three-dimensional cracks combined comprising I, II, III polytypes again；And experiment type is tried including static loading
Test and fatigue loading experiment.
(2) test specimen study portion has been designed to cuboid by the present invention, the three-dimensional character of structure is embodied, with reality
Component is more nearly so that the result that research measurement is obtained more accurate, reliability is stronger, can provide higher for Practical Project
Reference value；
(3) test specimen two ends have been designed to pole by the present invention, and one is convenient processing, and two be that can eliminate test specimen in experiment
During the stress concentration that produces；
(4) present invention devises two vertical through holes on circular bushing, because crackle splits when extension
Line forward position is ceaselessly changing so that external load can produce additional square, and two bearing pins being inserted perpendicularly into just can just eliminate production
Raw additional moment；
(5) present invention devises 24 through holes into 15 ° of angularly radial directions on the plectane of circular bushing base, and this can be with
Adjust the angle being further applied load in horizontal plane；
(6) present invention devises 7 through holes into 15 ° of angularly radial directions on c-type arc arm plate, can adjust in longitudinal surface
The angle being further applied load, the circular slab of the circular bushing of joint can just realize that three-dimensional is loaded at any angle；
(7) thickness of c-type arc arm version of the present invention is reasonable in design, according to the width design of experiment machine grip holder, installs fixture
It will not be rocked after on testing machine, also it is ensured that being not in eccentric load in experimentation；
(8) present invention is bolted to realize the change of load angle, easy to operate；
(9) present invention is simple in construction, easy to install, and reliability is high；
(10) present invention is easy and effective, achieves that good manufacturability, cost is low by traditional machining.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is test specimen part partial enlarged drawing in Fig. 1；
Fig. 3 is that fixture assembles schematic diagram.
In figure, 1 is c-type arc arm plate, and 2 be plectane, and 3 be circular bushing, and 4 be bearing pin, and 5 be test specimen, and 6 be bolt, and 7 are
Pin, 8 be experiment machine grip holder, and 9 be high-power microscope, 10 is microscope reading wand, 11 testing machines, 12 is controlling switch, 13 are
Test processes system.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment further illustrates the present invention.
In Fig. 1, a kind of loading device suitable for three-dimensional composite crack growth test of the invention, by Internal jigging,
Outer clamp, test specimen and test system composition, Internal jigging include：Circular bushing 3 and bearing pin 4；Outer clamp includes：C
Type arc arm plate 1, plectane 2, bolt 6, pin 7 and experiment machine grip holder 8；Test system includes：High-power microscope 9, microscope reading
Bar 10, testing machine 11, controlling switch 12 and test processes system 13.
In fig. 2, it is the partial enlarged drawing of test specimen 5, the two ends of test specimen 5 are cylinder, and this is for convenience
It is connected with Internal jigging.Research position is square emphatically in the middle of test specimen 5, and chamfering mistake is used between cylinder and cuboid
Cross, to reduce stress concentration.
In specific install, Internal jigging is first installed, the two ends cylinder of test specimen 5 is placed on to the set of circular bushing 3
In cylinder, two groups of through holes is alignd respectively, successively insert bearing pin 4 in the through hole of alignment；By soldered outer clamp c-type arc
Arm plate 1 and plectane 2 are connected on Internal jigging by bolt 6, all uniform on the base circular slab of plectane 2 and circular bushing 3
Angularly radial direction through hole is dispersed with, it is equally distributed by Internal jigging and outside with 8 bolts 6 according to required load angle
Fixture is connected, and notes nut should be arranged on to the inner side of plectane 2 here for convenient；The fixture assembled is arranged on experiment
On machine 11, the through-hole alignment of through hole and experiment machine grip holder 8 on c-type arc arm plate 1 is fixed with pin 7, notes testing machine 11 herein
The through hole on c-type arc arm plate 1 that both sides experiment machine grip holder 8 is connected must be centrosymmetric on test specimen 5；Mobile high power
Microscope 9, crack surface that can just to test specimen 5 adjusts the position of high-power microscope 9 by eyepiece, micro- in high power
Untill being clearly visible that crackle forward position is overlapped with center line in the lens barrel of mirror 9, note should be noted that high power during regulation high-power microscope 9
Microscope 9 need to reserve certain meter full scale, it is ensured that in experimentation in the position of microscope reading wand 10, and crackle expands
There is scale always on microscope reading wand 10 after exhibition.
In specific experiment, fixture first should be assembled into I types crackle and carry out testing machine presplitting, then carry out compound loading reality
Test, concrete operation step is as follows：Prefabricated test specimen 5 is empirically required to be arranged on testing machine, on regulation testing machine
Controlling switch 12, make fixture on testing machine 11 be in Pre strained state, adjust high-power microscope 9, record now microscope read
Scale on number bar 10, then load and tired circulation cycle are set by test processes system 13, crackle often extends
After a bit of, crackle forward position is found by high-power microscope 9, eyepiece center is at, now microscope reading wand is recorded
Reading on 10, then loading environment, again reading are set, so repeat, until test specimen 5 is broken.
It is specifically described below how angle is adjusted：In figure 3, the center in crackle forward position is taken to set up right angle seat for the origin of coordinates
Mark system, X-axis is parallel to crack surface and perpendicular to crack front, and Y-axis points to the normal orientation of crack surface, and Z axis is along crackle forward position.
By changing the through hole that c-type arc arm plate 1 is connected with experiment machine grip holder 8, Y-axis can be deviateed on c-type arc arm plate 1 with adjusting force F
Angle [alpha], realizes change of the α angles from 0 ° to 90 °.By rotating plectane 2, plectane 2 and the angle β of X-Y plane is set to realize 360 °
Change.
As seen from Figure 3, when α=0 °, test specimen 5 is stretched load；When α=90 ° and β=0 °, it is tested
Test specimen 5 is by plane shear load；When α=90 ° and β=90 °, test specimen 5 is by Antiplane Shear load；When β=0 °
And 0 °<α<At 90 °, test specimen 5 is by the compound loadings of I+ II；When β=90 ° and 0 °<α<At 90 °, test specimen 5 is by I+
The compound loadings of III；When α=90 ° and 0 °<β<At 90 °, test specimen 5 is by the compound loadings of II+III；When 0 °<α<90 ° and
0°<β<At 90 °, test specimen 5 is by the compound loadings of+III of I+ II.
Non-elaborated part of the present invention belongs to the known technology of those skilled in the art.
It is described above, it is only part embodiment of the present invention, but protection scope of the present invention is not limited thereto, times
What those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered
Within protection scope of the present invention.
Claims (10)
1. a kind of loading device suitable for three-dimensional composite crack growth test, it is characterised in that：The loading device includes
Internal jigging, outer clamp, test specimen and test system；Test specimen (5), outside folder can be fixed and connected to Internal jigging
Tool is connected with the testing machine (11) in test system；Connected between Internal jigging and outer clamp with bolt (6)；Internal jigging bag
Circular bushing (3) and bearing pin (4) are included, bearing pin (4) passes through the through hole connection test specimen (5) on circular bushing (3) when mounted；
Outer clamp includes c-type arc arm plate (1), plectane (2), bolt (6), pin (7) and experiment machine grip holder (8), wherein c-type arc arm plate
(1) using being welded to connect between plectane (2), the center line of c-type arc arm plate (1) thickness direction is overlapped with the diameter of plectane (2), examination
The through hole alignment of machine grip holder (8) and c-type arc arm plate (1) is tested, is connected with pin (7), bolt (6) is used for connecting plectane (2) and circle
Circular slab on shape bushing (3) base；Test system includes high-power microscope (9), microscope reading wand (10), testing machine
(11), controlling switch (12) and test processes system (13), wherein high-power microscope (9) are supported with microscope reading wand (10),
On the platform of testing machine (11), controlling switch (12) is located at the front side of testing machine (11), can control experiment progress, test
Processing system (13) is positioned over testing machine (11) side, for recording, showing and handle test data.
2. the loading device according to claim 1 suitable for three-dimensional composite crack growth test, it is characterised in that：Institute
The through hole that 7 15 ° angularly radial directions are uniformly distributed on c-type arc arm plate (1) is stated, passes through pin (7) and positioned at the logical of different angles
Cooperation between hole, realizes different types of crackle, including single I, II, the three of type III crackle and its polytype combination
Mixed Mode Crack is tieed up, after the completion for the treatment of the assembling of pin (7) and c-type arc arm plate (1) through hole, 7 through holes constitute the round center of circle and quilt
The center superposition of test block (5).
3. according to claim 2 or the described loading device suitable for three-dimensional composite crack growth test, its feature exists
In：C-type arc arm plate (1) thickness ratio tests machine grip holder (8) smaller 2-3mm of width, i.e., in the case of convenient install as far as possible
Approached with described experiment machine grip holder (8) width, can so prevent from being existed by the integral clamp that outer clamp and Internal jigging are assembled into
Slided on testing machine, while eccentric tension can be prevented.
4. the loading device according to claim 1 suitable for three-dimensional composite crack growth test, it is characterised in that：Institute
State and two orthogonal through holes are provided with circular bushing (3), one is to be connected for convenience with test specimen (5) by bearing pin (4)
Connect, two be that can eliminate the additional moment produced in three-dimensional composite Crack Extension.
5. according to claim 4 or the described loading device suitable for three-dimensional composite crack growth test, its feature exists
In：24 through holes into 15 ° of angularly radial directions are uniformly distributed on the circular slab of circular bushing (3) base, load can be achieved
The change of load angle.
6. the loading device according to claim 1 suitable for three-dimensional composite crack growth test, it is characterised in that：Institute
State test specimen (5) two ends to constitute using cylinder, convenient to be connected with circular bushing (3), test specimen (5) middle part is
The position studied again, is constituted using cuboid, in order to reduce the stress concentration of junction, is used between the cylinder and cuboid
Chamfered transition.
7. the loading device according to claim 1 suitable for three-dimensional composite crack growth test, it is characterised in that：Institute
State test specimen (5) cuboid will in processing prefabricated through check, crack length control the 2/5 of rectangular body length, this
It is that, because it is mostly passivation to process prefabricated crack tip, in order to produce more real crackle, certain length need to be left and existed
On testing machine presplitting again is carried out with the loading of I types.
8. the loading device according to claim 1 suitable for three-dimensional composite crack growth test, it is characterised in that：Institute
It is 400 to state high-power microscope (8) enlargement ratio, and the position where crackle can be clearly visible that in Crack Extension, and in time
Find the length of Crack Extension.
9. the loading device according to claim 1 suitable for three-dimensional composite crack growth test, it is characterised in that：Rotation
Turn and mobile microscope reading wand (10) can make high-power microscope (9) just to crackle forward position, facilitate follow-up On Crack Propagation
Observation.
10. a kind of loading method suitable for three-dimensional composite crack growth test, it is characterised in that realize that step is as follows：
Step 1：The center in crackle forward position is taken to set up rectangular coordinate system for the origin of coordinates, X-axis is parallel to crack surface and perpendicular to splitting
Line leading edge, Y-axis points to the normal orientation of crack surface, and Z axis is pressed from both sides along crackle forward position by changing c-type arc arm plate (1) with testing machine
The through hole of head (8) connection, adjusting force F deviates the angle [alpha] of Y-axis on c-type arc arm plate (1), realizes change of the α angles from 0 ° to 90 °
Change；
Step 2：By rotating plectane (2), change the through hole being connected with circular bushing (3), plectane (2) and X-Y plane can be made
Angle β realize 360 ° of changes；
When α=0 °, test specimen (5) is stretched load；When α=90 ° and β=0 °, test specimen (5) is cut by plane
Cut load；When α=90 ° and β=90 °, test specimen (5) is by Antiplane Shear load；When β=0 ° and 0 °<α<At 90 °,
Test specimen (5) is by the compound loadings of I+ II；When β=90 ° and 0 °<α<At 90 °, test specimen (5) is compound by I+III
Loading；When α=90 ° and 0 °<β<At 90 °, test specimen (5) is by the compound loadings of II+III；When 0 °<α<90 ° and 0 °<β<
At 90 °, test specimen (5) can both have been realized single I, II, type III three-dimensional cracks by the compound loadings of+III of I+ II
Expanding test, can realize the extension test of the compound three-dimensional cracks combined to I, II, III polytypes again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710217999.9A CN107014682A (en) | 2017-04-05 | 2017-04-05 | A kind of loading device and method suitable for three-dimensional composite crack growth test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710217999.9A CN107014682A (en) | 2017-04-05 | 2017-04-05 | A kind of loading device and method suitable for three-dimensional composite crack growth test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107014682A true CN107014682A (en) | 2017-08-04 |
Family
ID=59446636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710217999.9A Pending CN107014682A (en) | 2017-04-05 | 2017-04-05 | A kind of loading device and method suitable for three-dimensional composite crack growth test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107014682A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169016A (en) * | 2017-12-12 | 2018-06-15 | 清华大学 | A kind of adjustable sample of multi-angle bears the experimental rig of pulling force and shearing simultaneously |
| CN108613890A (en) * | 2018-05-23 | 2018-10-02 | 西南交通大学 | A kind of method of II type stress intensity factor of crack threshold value of measuring metallic materials |
| CN108931436A (en) * | 2018-06-01 | 2018-12-04 | 陕西省地质环境监测总站 | A kind of bias-load and shear creep compound action experimental rig of soft rock |
| CN109030248A (en) * | 2018-07-10 | 2018-12-18 | 西南交通大学 | I-II Mixed Mode Crack Fatigue Crack Growth Rates experimental rig and test method |
| CN109443914A (en) * | 2019-01-02 | 2019-03-08 | 中国科学院地质与地球物理研究所 | Variable-angle compression-shear test fixture and its application method |
| CN110346221A (en) * | 2019-08-20 | 2019-10-18 | 山东建筑大学 | A kind of experimental rig and method for simulating the compound cracking model of mixture |
| CN111122318A (en) * | 2019-12-18 | 2020-05-08 | 西北工业大学 | Test device for realizing multiple composite crack propagation and use method |
| CN111678777A (en) * | 2020-04-26 | 2020-09-18 | 江苏禹治流域管理技术研究院有限公司 | Can open up test device including multiple compound mode fracture such as compression shear |
| CN112179759A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Sandwich structure material compression shear test fixture |
| CN112461681A (en) * | 2019-09-09 | 2021-03-09 | 中国矿业大学(北京) | Multi-angle variable axial pressure rock shearing test device and test method |
| CN113654895A (en) * | 2021-09-09 | 2021-11-16 | 哈尔滨工业大学 | Method for obtaining I-type fracture toughness in three-dimensional woven composite material fiber bundle |
| WO2022106827A1 (en) * | 2020-11-19 | 2022-05-27 | The University Court Of The University Of Edinburgh | Apparatus, system and method for use in materials testing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201281679Y (en) * | 2008-09-16 | 2009-07-29 | 昆明理工大学 | Composite rupture test device with adjustable angle |
| CN102156069A (en) * | 2011-03-30 | 2011-08-17 | 复旦大学 | Clamp for mixed fracture test of dual-phase material interface |
| CN102262016A (en) * | 2011-04-29 | 2011-11-30 | 吉林大学 | Cross-scale micro nanometer grade in-situ composite load mechanical property testing platform |
| CN202649026U (en) * | 2012-06-19 | 2013-01-02 | 昆明理工大学 | Universal fracture test device |
| CN202793900U (en) * | 2012-09-05 | 2013-03-13 | 昆明理工大学 | Multipurpose fracture test device |
| CN104237007A (en) * | 2013-06-07 | 2014-12-24 | 合肥通用机械研究院 | Device for testing composite fatigue crack propagation rate |
-
2017
- 2017-04-05 CN CN201710217999.9A patent/CN107014682A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201281679Y (en) * | 2008-09-16 | 2009-07-29 | 昆明理工大学 | Composite rupture test device with adjustable angle |
| CN102156069A (en) * | 2011-03-30 | 2011-08-17 | 复旦大学 | Clamp for mixed fracture test of dual-phase material interface |
| CN102262016A (en) * | 2011-04-29 | 2011-11-30 | 吉林大学 | Cross-scale micro nanometer grade in-situ composite load mechanical property testing platform |
| CN202649026U (en) * | 2012-06-19 | 2013-01-02 | 昆明理工大学 | Universal fracture test device |
| CN202793900U (en) * | 2012-09-05 | 2013-03-13 | 昆明理工大学 | Multipurpose fracture test device |
| CN104237007A (en) * | 2013-06-07 | 2014-12-24 | 合肥通用机械研究院 | Device for testing composite fatigue crack propagation rate |
Non-Patent Citations (1)
| Title |
|---|
| 朱莉: "三维复合型脆性断裂行为的数值计算与实验研究", 《中国博士学位论文全文数据库基础科学辑》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169016A (en) * | 2017-12-12 | 2018-06-15 | 清华大学 | A kind of adjustable sample of multi-angle bears the experimental rig of pulling force and shearing simultaneously |
| CN108613890A (en) * | 2018-05-23 | 2018-10-02 | 西南交通大学 | A kind of method of II type stress intensity factor of crack threshold value of measuring metallic materials |
| CN108931436A (en) * | 2018-06-01 | 2018-12-04 | 陕西省地质环境监测总站 | A kind of bias-load and shear creep compound action experimental rig of soft rock |
| CN108931436B (en) * | 2018-06-01 | 2021-02-26 | 陕西省地质环境监测总站 | Eccentric loading and shear creep combined action test device for soft rock |
| CN109030248A (en) * | 2018-07-10 | 2018-12-18 | 西南交通大学 | I-II Mixed Mode Crack Fatigue Crack Growth Rates experimental rig and test method |
| CN109443914A (en) * | 2019-01-02 | 2019-03-08 | 中国科学院地质与地球物理研究所 | Variable-angle compression-shear test fixture and its application method |
| CN110346221A (en) * | 2019-08-20 | 2019-10-18 | 山东建筑大学 | A kind of experimental rig and method for simulating the compound cracking model of mixture |
| CN112461681A (en) * | 2019-09-09 | 2021-03-09 | 中国矿业大学(北京) | Multi-angle variable axial pressure rock shearing test device and test method |
| CN112461681B (en) * | 2019-09-09 | 2022-10-11 | 中国矿业大学(北京) | Multi-angle variable axial pressure rock shearing test device and test method |
| CN111122318B (en) * | 2019-12-18 | 2022-07-19 | 西北工业大学 | Test device for realizing multiple composite crack propagation and use method |
| CN111122318A (en) * | 2019-12-18 | 2020-05-08 | 西北工业大学 | Test device for realizing multiple composite crack propagation and use method |
| CN111678777A (en) * | 2020-04-26 | 2020-09-18 | 江苏禹治流域管理技术研究院有限公司 | Can open up test device including multiple compound mode fracture such as compression shear |
| CN112179759A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Sandwich structure material compression shear test fixture |
| WO2022106827A1 (en) * | 2020-11-19 | 2022-05-27 | The University Court Of The University Of Edinburgh | Apparatus, system and method for use in materials testing |
| CN113654895B (en) * | 2021-09-09 | 2022-05-17 | 哈尔滨工业大学 | Method for obtaining I-type fracture toughness in three-dimensional woven composite material fiber bundle |
| CN113654895A (en) * | 2021-09-09 | 2021-11-16 | 哈尔滨工业大学 | Method for obtaining I-type fracture toughness in three-dimensional woven composite material fiber bundle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107014682A (en) | A kind of loading device and method suitable for three-dimensional composite crack growth test | |
| CN109632285B (en) | Turbine blade high temperature fatigue test anchor clamps | |
| CN100520344C (en) | Multiple way fatigue loading clamping device for x-shape spot welding test sample | |
| CN106624232A (en) | Precise machining method for conical film holes of turbine guide blade | |
| CN103692251B (en) | A kind of Cylinder Parts angle of bend is measured and level and vertical plane boring grab | |
| CN102607951A (en) | Double-head tenon joint tension test structure without additional bending moment | |
| CN105445101A (en) | Experiment clamp capable of being adjusted and aligned and used for determining tensile strength of rocks with splitting method and method for determining tensile strength of rocks | |
| CN111413203A (en) | Concrete uniaxial tension test fixture and test method | |
| CN102267059B (en) | Fine boring clamp of connecting rod of automobile and method for operating fine boring clamp | |
| CN107870124A (en) | Fixture for the experiment of composite board compression performance | |
| CN103760015B (en) | A kind of autonavigator for compressive fatigue test | |
| CN205317585U (en) | Automatic tensile test device of rectifying of rock | |
| CN204461890U (en) | A kind of full support thin plate compression clamp | |
| CN109676421A (en) | One kind is for the spherical hole drilling special fixture of high-precision in rocker member | |
| CN107167047B (en) | Measuring device and measuring method for drill jig of airplane butt joint stringer joint | |
| CN112091657B (en) | Clamp for machining blade shroud of engine blade and machining method of engine blade | |
| CN112611635B (en) | Concrete uniaxial tension test fixture and test method | |
| CN203853833U (en) | Novel drill jig for drilling valve body | |
| CN201917492U (en) | Displacement transfer device used for clamping extensometer | |
| CN106017254B (en) | A kind of electro spindle collet detection device | |
| CN106270637A (en) | A kind of general-purpose type drilling equipment being applicable to steel-structure connecting plate and operational approach thereof | |
| CN206832541U (en) | A kind of fixing device of machining center vertical crack semi-disc test specimen | |
| CN108406354B (en) | Eccentric positioning block suitable for quick switching of engine connecting rods of various types | |
| CN205940921U (en) | Wind vanes vibration test frock clamp | |
| CN211249152U (en) | Five-axis machining center machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170804 |
|
| RJ01 | Rejection of invention patent application after publication |