CN104990805B - A kind of prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage - Google Patents
A kind of prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage Download PDFInfo
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- CN104990805B CN104990805B CN201510363673.8A CN201510363673A CN104990805B CN 104990805 B CN104990805 B CN 104990805B CN 201510363673 A CN201510363673 A CN 201510363673A CN 104990805 B CN104990805 B CN 104990805B
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- pressure head
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- driver
- testing machine
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Abstract
The invention discloses a kind of prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage, including Portable supporting component, pressure head, pressure head feeder assembly and observing and controlling component, the pressure head feeder assembly is connected with the Portable supporting component, and it is connected with the pressure head, the observing and controlling component is connected with the pressure head feeder assembly, the pressure head can be positioned at multiple positions of large-scale experiment part, the Portable supporting component includes column and entablature, the column is connected with the entablature, the observing and controlling component is made up of load transducer and displacement transducer, to realize load controlled loading and pit depth controlled loading.Compared with prior art, the present invention has the advantages that easy to remove, big stroke, overall structure be simple and reliable and the influence for the part surface irregularity that is not put to the test, prefabricated suitable for the quiet Indentation Damage of large-scale composite material structure.
Description
Technical field
The present invention relates to a kind of prefabricated portable experimental technique of large-scale composite material Structural Static Indentation Damage, more particularly, to one
The kind prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage.
Background technology
Composite is widely used in aeronautic structure, can be in laminate when these structures bear low velocity impact load
Inside produces large area layering, and this layering is not easy to identify from surface, and substantially reduces the bearing capacity of structure, therefore
Serious threat is generated to the safety applications of composite.In addition, degree of injury caused by impact is not easy to quantify, therefore
, it is necessary to carry out the largely composite structure load-carrying properties test job containing damage in aeronautic structure engineering.Result of study table
Bright (experimental study of composite material laminated board shock resistance behavior and characterizing method, Shen Zhen, Yang Shengchun, Chen Puhui, composite
Report, the 5th phase of volume 25 in 2008,125-133), composite after being hit caused pit be applied to the evaluation of degree of injury,
Pit depth is also the index of lesion visibility simultaneously, significant to the visual damage check in structural maintenance.Grind
Study carefully and show, quasistatic press-in can mutual equivalent to the damage caused by composite material laminated board with low velocity impact.(toughness reinforcing of offing normal
Composite laminated plate quasistatic micro-indentation test is studied, and thanks a luxuriant, Zhang Lei, Su Ni etc., material engineering, the 1st phase in 2011,42-
46) static indentations method, therefore, can be used, to replace impact test.Also, static indentations test repeatability is good, easily controllable.
Most of researchs at present concentrate on to be carried out in fact using common bench funicular machine to composite material laminated board test specimen
The scientific research of room level is tested, and for the composite large-sized structural component that engineering is related in practice, by size limits difficulty
To be placed to desktop tester, or part deforms excessive cause testing machine stroke not meet in itself, it is difficult to uses desktop test
Machine carries out quiet indentation test, therefore need to be completed with special portable set.In addition, for testpieces surface irregularity, with
And large-scale experiment part can not dismantle needs vertically or stand upside down what is tested, prior art can not often be completed.
The content of the invention
The purpose of the present invention be exactly in order to overcome limitation existing for above-mentioned prior art and provide it is a kind of it is easy to remove,
Big stroke, overall structure is simple and reliable, can be suitably used for the testpieces surface of out-of-flatness, and can not be dismantled for large-scale experiment part
Need to tilt larger angle such as the vertical or prefabricated portable experiment of large-scale composite material Structural Static Indentation Damage tested of standing upside down
Machine.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage, including Portable supporting component, pressure head,
Pressure head feeder assembly and observing and controlling component, the pressure head feeder assembly are connected with the Portable supporting component, and with the pressure head
Drive connection, the observing and controlling component are connected with the pressure head feeder assembly, and the pressure head can be positioned at the multiple of large-scale experiment part
Position, the Portable supporting component include column and entablature, and the column is connected with the entablature, the observing and controlling component
Including load transducer and displacement transducer.
Preferably, the prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage of the present invention is described vertical
Post includes movable column and vertical columns, and the movable column is movable, and the upper end of the movable column has upstanding studs,
The upstanding studs pass through the entablature, and movable column stretching upper horizontal stroke can be adjusted by adjusting the upstanding studs
The length of beam, institute's displacement sensors are arranged on the lower end of the vertical columns, for measuring testpieces surface relative to described
The displacement of vertical columns.
Preferably, the prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage of the present invention is described vertical
The lower end of post is connected with base, and four leg bolts are set on the base, can individually adjust described in the leg bolt stretching
The length of base, the base set hole in the opening position corresponding to the pressure head, and described hole is available for the pressure head to wear
Go out, described displacement transducer is arranged on the base, for measuring displacement of the testpieces surface relative to the base.
It is further preferably the portable testing machine, it is characterised in that the lower end of the column is wound with what can be powered
Electromagnetic coil, after the electromagnetic coil is powered, the lower end of the column can attract to be fixed on the testpieces of magnetic material, so as to suitable
Should can not be dismantled in large-scale experiment part needs inclination larger angle to be tested such as vertical or handstand.After electromagnetic coil powers off, institute
The lower end for stating column loses magnetism, and can be separated with the testpieces of magnetic material, to remove portable testing machine of the present invention.
Institute's displacement sensors are arranged on the lower end of the column, for measuring displacement of the testpieces surface relative to the column.
Any one as described above prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage, may also include as
Lower feature：Described pressure head feeder assembly includes hoisting cross beam, driver and screw rod, and described hoisting cross beam slides with column to be connected
Connecing, described driver is fixed on hoisting cross beam, is connected with screw drive, and described screw rod lower end is connected with hoisting cross beam,
The screwed hole matched with screw rod is provided with described entablature, described hoisting cross beam is provided with and pushed away with what screw rod lower end was connected
Power bearing.Described driver is provided with driver gear, and described screw rod is provided with the screw rod being connected with driver gear
Gear, driver passes sequentially through driver gear, screw gear drives screw motion, and the reaction force for passing through entablature is real
The motion of existing hoisting cross beam, so as to apply pressure to testpieces with dynamic head.Described load transducer is connected with pressure head, and solid
It is scheduled on hoisting cross beam.
The prefabricated portable testing machine of a kind of large-scale composite material Structural Static Indentation Damage of the present invention, the load sensing
Device is used to realize load controlled loading, and the load controlled loading process is as follows：
1) driver loads；
2) load transducer gathers contact force data in real time, and judges whether the contact force data reaches setting value, if
It is step 3) to be performed, if it has not, return to step 1)；
3) driver stops loading.
The prefabricated portable testing machine of a kind of large-scale composite material Structural Static Indentation Damage of the present invention, the displacement sensing
Device is used to realize pit depth controlled loading, and the pit depth controlled loading process is as follows：
1) driver loads；
2) judge whether the pit depth of testpieces reaches setting value, if it is, step 3) is performed, if it has not, returning to step
It is rapid 1)；
3) driver stops loading.
Described pit depth subtracts displacement obtained by displacement transducer for the amount of feeding of pressure head feeder assembly.
Compared with prior art, the present invention has advantages below：
1st, portable characteristics of the invention may be implemented in the multiple location progress Quasi-static Indentation Damage of large-scale composite material structure
It is prefabricated；
2nd, can be met by displacement transducer and load transducer in specific pressure requirements or depth of cup requirement
Under, the pressure head amount of feeding is adjusted in real time, realizes closed-loop control.It is accurately prefabricated suitable for the impression of large-sized structural component.
3rd, available travel of the invention is big, deforms excessive after overcoming large scale structure stand under load and universal testing-machine stroke can not
The limitation of satisfaction, realize the prefabricated of specified pit depth.
4th, because the invention belongs to portable set, the working surface often out-of-flatness of its testpieces, the present invention can be very
The good testpieces surface for acting on out-of-flatness make it that its application is bigger.
5th, because large scale equipment is often non-dismountable, can sometimes be tested for the position of some inclination larger angle
Test, the present invention are adapted to need to tilt larger angle, the requirement of such as vertical even handstand experimental test.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the load controlled loading process flow diagram flow chart of the present invention.
Fig. 3 is the pit depth controlled loading process flow diagram flow chart of the present invention.
Fig. 4 is the partial structural diagram of the embodiment of the present invention two.
Wherein, 1- supporting assemblies, 2- pressure head feeder assemblies, 3- upstanding studs, 4- vertical columns, 5- displacement transducers, 6-
Movable column, 7- pressure heads, 8- load transducers, 9- hoisting cross beams, 10- drivers, 11- driver gears, 12- entablatures, 13-
Screwed hole, 14- screw rods, 15- screw gears, 16- thrust bearings, 17- bases, 18- leg bolts, 20- columns.
Embodiment
The present invention will be described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment one
As shown in figure 1, a kind of prefabricated testing machine of quiet Indentation Damage of composite structure, including Portable supporting component 1, pressure
First 7, pressure head feeder assembly 2 and observing and controlling component, described pressure head feeder assembly 2 is connected with Portable supporting component 1, and and pressure head
7 drive connections, described observing and controlling component are connected with pressure head feeder assembly 2, and pressure head can be positioned at multiple positions of large-scale experiment part.
Described Portable supporting component 1 includes vertical columns 4, movable column 6 and entablature 12, and the vertical columns 4 are stood with movable
Post 6 is connected with entablature 12.The movable upper end of column 6 is in bolt arrangement, is named as upstanding studs 3, the upstanding studs 3
Through the entablature 12, the length that can be adjusted the movable column 6 by adjusting the upstanding studs 3 and stretch out the entablature 12
Degree.
The pressure head feeder assembly 2 includes hoisting cross beam 9, driver 10 and screw rod 14, and described hoisting cross beam 9 is with fixing
Column 4 and movable column 6 are slidably connected, and described driver 10 is fixed on hoisting cross beam 9, is connected with screw rod 14, institute
The upper end of screw rod 14 stated is connected with entablature 12, and lower end is connected with hoisting cross beam 9.Described entablature 12 is provided with and screw rod 14
The screwed hole 13 of matching, described hoisting cross beam 9 are provided with the thrust bearing 16 being connected with the lower end of screw rod 14.Described driver
10 are provided with driver gear 11, and described screw rod 14 is provided with the screw gear 15 being connected with driver gear 11, driving
Device 10 passes sequentially through driver gear 11, screw gear carrys out 15 drive screw rods 14 and moved, and passes through the reaction force of entablature 12
The motion of hoisting cross beam 9 is realized, so as to apply pressure to testpieces with dynamic head 7.
Described observing and controlling component is made up of load transducer 8 and displacement transducer 5, is respectively used to realize load controlled loading
With pit depth controlled loading, described displacement transducer 5 is fixed on vertical columns 4, relative for measuring testpieces surface
In the displacement of vertical columns 4, described load transducer 8 is connected with pressure head 7, is fixed on hoisting cross beam 9.
As shown in Fig. 2 described load controlled loading process is as follows：1) driver 10 loads；2) load transducer 8 is real-time
Collection contact force data, and judge whether the contact force data reaches setting value, if it is, step 3) is performed, if it has not, returning
Step 1)；3) driver 10 stops loading.
As shown in figure 3, described pit depth controlled loading process is as follows：1) driver 10 loads；2) testpieces is judged
Pit depth whether reach setting value, if it is, perform step 3), if it has not, return to step 1)；3) driver 10 stops adding
Carry.Described pit depth subtracts the gained displacement of displacement transducer 5 for the amount of feeding of pressure head feeder assembly 2, and this mode overcomes
Larger unfavorable factor is deformed after large scale structure stand under load, realizes the prefabricated of designated depth pit.
Embodiment two
Compared with embodiment one, its difference is, such as Fig. 4：The lower end of column 20 connects a base 17, described
Four leg bolts 18 are set on base 17, the leg bolt 18 can individually adjust it and stretch out the length of the base 17,
So as to be adapted to the testpieces surface of out-of-flatness, the base 17 is provided with hole corresponding to the position of pressure head 7, is available for the pressure
First 7 are passed, and described displacement transducer 5 is arranged on the base 17, for measuring testpieces surface relative to the base
17 displacement.
Embodiment three
Compared with embodiment one, its difference is：The column lower end is wound with the electromagnetic coil that can be powered (not with attached
Figure), after the electromagnetic coil is powered, the column lower end can attract to be fixed on the testpieces of magnetic material.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Creative work can is needed to make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (8)
1. a kind of prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage, including Portable supporting component, pressure head, pressure
Head feeder assembly and observing and controlling component, the pressure head feeder assembly are connected with the Portable supporting component, and are passed with the pressure head
Dynamic connection, the observing and controlling component are connected with the pressure head feeder assembly, it is characterised in that the pressure head can be positioned at large-scale experiment
Multiple positions of part, the Portable supporting component include column and entablature, and the column is connected with the entablature, described
Observing and controlling component includes load transducer and displacement transducer；The column includes movable column and vertical columns, described movable vertical
Post is movable, and the upper end of the movable column has upstanding studs, and the upstanding studs pass through the entablature, pass through regulation
The upstanding studs can adjust the length that the movable column stretches out the entablature, and institute's displacement sensors are arranged on described solid
The lower end of column is determined towards the pressure head；The lower end of the column is wound with the electromagnetic coil that can be powered, when the electromagnetic coil is powered
Afterwards, the lower end of the column can attract to be fixed on the testpieces of magnetic material.
2. the prefabricated portable testing machine of a kind of large-scale composite material Structural Static Indentation Damage according to claim 1, its feature
It is, the lower end of the column is connected with base, and four leg bolts are set on the base, can individually adjust the leg spiral shell
Bolt stretches out the length of the base, and the base sets hole in the opening position corresponding to the pressure head, and described hole is available for
The pressure head passes.
A kind of 3. prefabricated portable examination of large-scale composite material Structural Static Indentation Damage according to claim 1~2 any one
Test machine, it is characterised in that described pressure head feeder assembly includes hoisting cross beam, driver and screw rod, described hoisting cross beam with
Column is slidably connected, and described driver is fixed on hoisting cross beam, is connected with screw drive, described screw rod lower end and lifting
Crossbeam connects, and is provided with screwed hole match with screw rod on described entablature, described hoisting cross beam provided with screw rod
Hold the thrust bearing of connection.
4. the prefabricated portable testing machine of a kind of large-scale composite material Structural Static Indentation Damage according to claim 3, its feature
It is, described driver is provided with driver gear, and described screw rod is provided with the screw rod tooth being connected with driver gear
Wheel, driver passes sequentially through driver gear, screw gear to drive screw motion, and is realized by the reaction force of entablature
The motion of hoisting cross beam, so as to apply pressure to testpieces with dynamic head.
5. the prefabricated portable testing machine of a kind of large-scale composite material Structural Static Indentation Damage according to claim 4, its feature
It is, described load transducer is connected with pressure head, and is fixed on hoisting cross beam.
6. the prefabricated portable testing machine of a kind of large-scale composite material Structural Static Indentation Damage according to claim 5, its feature
It is, the load transducer is used to realize load controlled loading, and the load controlled loading process is as follows：
1) driver loads；
2) load transducer gathers contact force data in real time, and judges whether the contact force data reaches setting value, if it is, holding
Row step 3), if it has not, return to step 1)；
3) driver stops loading.
7. the prefabricated portable testing machine of a kind of large-scale composite material Structural Static Indentation Damage according to claim 5, its feature
It is, institute's displacement sensors are used to realize pit depth controlled loading, and the pit depth controlled loading process is as follows：
1) driver loads；
2) judge whether the pit depth of testpieces reaches setting value, if it is, step 3) is performed, if it has not, return to step 1)；
3) driver stops loading.
8. the prefabricated portable testing machine of a kind of large-scale composite material Structural Static Indentation Damage according to claim 7, its feature
It is, the pit depth subtracts displacement obtained by displacement transducer for the amount of feeding of pressure head feeder assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510363673.8A CN104990805B (en) | 2015-06-26 | 2015-06-26 | A kind of prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510363673.8A CN104990805B (en) | 2015-06-26 | 2015-06-26 | A kind of prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage |
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| CN104990805A CN104990805A (en) | 2015-10-21 |
| CN104990805B true CN104990805B (en) | 2017-12-29 |
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| CN201510363673.8A Expired - Fee Related CN104990805B (en) | 2015-06-26 | 2015-06-26 | A kind of prefabricated portable testing machine of large-scale composite material Structural Static Indentation Damage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102567221B1 (en) * | 2015-12-09 | 2023-08-16 | 매사추세츠 머티리얼즈 테크놀로지스 엘엘씨 | Measurement of material properties under local tensile stress through contact mechanics |
| CN107807045A (en) * | 2017-10-31 | 2018-03-16 | 青岛兴河建材有限公司 | A kind of compression test device and test method for concrete box culvert |
| CN110411846A (en) * | 2019-09-03 | 2019-11-05 | 山东特检科技有限公司 | A kind of Portable material performance indentation test tester |
| CN110849521B (en) * | 2019-11-13 | 2021-05-28 | 中国石油大学(华东) | Portable loading and optical testing device applied to field residual stress |
| CN112461641B (en) * | 2020-12-08 | 2022-01-04 | 哈尔滨理工大学 | One-way thread transmission static force loading device |
| CN113155657B (en) * | 2021-03-30 | 2024-01-30 | 中国飞机强度研究所 | Test device for static indentation of composite material curved beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1332491A (en) * | 1919-03-27 | 1920-03-02 | Figari Francesco | Portable testing-machine |
| JPS63210640A (en) * | 1987-02-26 | 1988-09-01 | Yokohama Rubber Co Ltd:The | Apparatus for testing twist fatigue of composite material |
| CN102706754A (en) * | 2012-06-13 | 2012-10-03 | 上海交通大学 | Static indentation damage prefabrication testing machine for composite material structures |
| CN103698221A (en) * | 2013-12-19 | 2014-04-02 | 上海华龙测试仪器股份有限公司 | Bending toughness tester for fiber reinforced concrete |
| CN104568601A (en) * | 2015-01-22 | 2015-04-29 | 安徽工程大学 | Spatial structure mechanics experiment device |
-
2015
- 2015-06-26 CN CN201510363673.8A patent/CN104990805B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1332491A (en) * | 1919-03-27 | 1920-03-02 | Figari Francesco | Portable testing-machine |
| JPS63210640A (en) * | 1987-02-26 | 1988-09-01 | Yokohama Rubber Co Ltd:The | Apparatus for testing twist fatigue of composite material |
| CN102706754A (en) * | 2012-06-13 | 2012-10-03 | 上海交通大学 | Static indentation damage prefabrication testing machine for composite material structures |
| CN103698221A (en) * | 2013-12-19 | 2014-04-02 | 上海华龙测试仪器股份有限公司 | Bending toughness tester for fiber reinforced concrete |
| CN104568601A (en) * | 2015-01-22 | 2015-04-29 | 安徽工程大学 | Spatial structure mechanics experiment device |
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