CN206990351U - Metal electromagnetism loading system based on lorentz force - Google Patents
Metal electromagnetism loading system based on lorentz force Download PDFInfo
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- CN206990351U CN206990351U CN201720841388.7U CN201720841388U CN206990351U CN 206990351 U CN206990351 U CN 206990351U CN 201720841388 U CN201720841388 U CN 201720841388U CN 206990351 U CN206990351 U CN 206990351U
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- loading
- controllable silicon
- storage capacitor
- lorentz force
- permanent magnet
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- 238000011068 loading method Methods 0.000 title claims abstract description 86
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 30
- 239000002184 metal Substances 0.000 title claims abstract description 30
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 39
- 239000010703 silicon Substances 0.000 claims abstract description 39
- 230000005284 excitation Effects 0.000 claims abstract description 38
- 239000003990 capacitor Substances 0.000 claims abstract description 34
- 230000001960 triggered effect Effects 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 15
- 239000004411 aluminium Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000007769 metal material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003302 ferromagnetic material Substances 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 230000005291 magnetic effect Effects 0.000 description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 description 3
- 238000007600 charging Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Electromagnets (AREA)
Abstract
It the utility model is related to the metal electromagnetism loading system based on Lorentz force, it is characterised in that the system includes adjustable stabilized voltage supply, storage capacitor, controllable silicon, single-chip microcomputer and four loading heads；The output end of the adjustable stabilized voltage supply is connected with storage capacitor, controllable silicon and four loading heads successively, and the control port of controllable silicon is connected with single-chip microcomputer, and controlled silicon conducting is triggered by single-chip microcomputer；Adjustable stabilized voltage supply is used to power frequency supply carrying out rectification and boosts and charged for storage capacitor；Storage capacitor is used to store electric energy, and is discharged to loading head, and controllable silicon is used for the electric discharge for controlling storage capacitor；Four loadings header structure is identical, and two loading heads are one group, every group of upper and lower surface that metallic plate to be loaded is arranged in upper and lower symmetrical structure；Each loading head includes excitation coil and permanent magnet, the output end connection of the excitation coil and controllable silicon, a permanent magnet is fixed in the left half of region on excitation coil top and/or right half of region.
Description
Technical field
It the utility model is related to a kind of Metal loading systems technology field, and in particular to a kind of metal based on Lorentz force
Electromagnetism loading system.
Background technology
Metal material applies quite varied, the structural behaviour and safety of these metal parts in various engineering structures at present
State directly affects the safe operation of equipment.Metal material is influenceed by factors such as loading stress, temperature stress, residual stress
Defect, even crackle and fracture can be produced, causes serious consequence.In order to study the performance of metal material under stress state, often
Need to load metal material (i.e. applying power, including pulling force and pressure).Traditional material testing machine uses motor or liquid
Pressure driving, using gear, lead screw transmission, needs workpiece clamp to live in capable stretching when in use, and workpiece is exerted a force from outside, experiment
Machine is bulky, expensive, and maintenance cost is high；And test specimen is fixed using chuck for it, inevitably to material
Cause to damage in material surface.
Utility model content
In order to overcome existing machinery loading device is bulky, directly contacted with test specimen the shortcomings that, the utility model provide
A kind of metal electromagnetism loading system based on Lorentz force, the system by electromagnetic force be used for metal specimen stretch among, have make
Firmly uniformly, it is non-contact with workpiece, it is swift to operate, the advantages of being easy to carry.
The utility model the technical scheme adopted is that provide a kind of metal electromagnetism loading system based on Lorentz force,
It is characterized in that the system includes adjustable stabilized voltage supply, storage capacitor, controllable silicon, single-chip microcomputer and four loading heads；It is described adjustable
The output end of voltage-stabilized power supply is connected with storage capacitor, controllable silicon and four loading heads successively, the control port and monolithic of controllable silicon
Machine is connected, and controlled silicon conducting is triggered by single-chip microcomputer；Adjustable stabilized voltage supply is used to power frequency supply carrying out rectification and boosts and be
Storage capacitor charges；Storage capacitor is used to store electric energy, and is discharged to loading head, and controllable silicon is used to control putting for storage capacitor
Electricity；Four loadings header structure is identical, and two loading heads are one group, and every group is arranged in gold to be loaded in upper and lower symmetrical structure
Belong to the upper and lower surface of plate；Each loading head includes excitation coil and permanent magnet, the excitation coil and controllable silicon it is defeated
Go out end connection, a permanent magnet is fixed in the left half of region on excitation coil top and/or right half of region.
The characteristics of the utility model loading system：
1. the utility model uses electromagnetic induction principle, workpiece is not exerted a force from outside, but makes workpiece from internal stress,
So that the distribution of test specimen internal stress is more uniform；
2. fixing workpiece using chuck in mechanical stretching machine, the pressure of chuck and anti-slip veins thereon can be made to workpiece surface
Into damage.The utility model loading head does not contact directly with workpiece, but avoids and workpiece is tried in workpiece by magnetic fields
The damage on part surface；
3. system bulk is small in light weight, it is easy to carry, it is easy to loading and unloading, it can be added in the case where test specimen is in service state
Carry, facilitate technical staff's execute-in-place.
Traditional stretching-machine is bulky immovable, is intended to carry out test specimen under detection will need to dismantle in the part slave unit
Come, be then sent to laboratory and studied, process is comparatively laborious.Tthe utility model system equipment is light can to take open air, side to
Just technical staff's execute-in-place, the problem of existing stretching-machine is bulky expensive is overcome.
Brief description of the drawings
Fig. 1 is the structured flowchart of metal electromagnetism loading system of the utility model based on Lorentz force；
Fig. 2 is metal electromagnetism loading system loading head main structure diagram of the utility model based on Lorentz force；
Fig. 3 is metal electromagnetism loading system loading head subjectivity diagrammatic cross-section of the utility model based on Lorentz force；
Fig. 4 is the peace of loading head and metallic plate when metal electromagnetism loading system of the utility model based on Lorentz force uses
Assembling structure main structure diagram；
Fig. 5 is the peace of loading head and metallic plate when metal electromagnetism loading system of the utility model based on Lorentz force uses
Assembling structure overlooking the structure diagram；
Fig. 6 is principle schematic when metal electromagnetism loading system of the utility model based on Lorentz force uses.
Fig. 7 is the loading head of embodiment 2 and the mounting structure main structure diagram of metallic plate.
Fig. 8 is the loading head of embodiment 3 and the mounting structure main structure diagram of metallic plate.
In figure, 1. adjustable stabilized voltage supplies, 2. storage capacitors, 3. controllable silicons, 4. single-chip microcomputers, 5. excitation coils, 6. metallic plates,
7. permanent magnet, 8. exciting currents, 9. inductive loops, 10. magnetostatic fields, 11. electromagnetic forces.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
Metal electromagnetism loading system (abbreviation system, referring to Fig. 1,4,5) of the utility model based on Lorentz force includes can
Adjust voltage-stabilized power supply 1, storage capacitor 2, controllable silicon 3, single-chip microcomputer 4 and four loading heads；The output end of the adjustable stabilized voltage supply 1 according to
Secondary to be connected with storage capacitor 2, controllable silicon 3 and four loading heads, the control port of controllable silicon is connected with single-chip microcomputer 4, passes through monolithic
Machine 4 triggers controlled silicon conducting；Adjustable stabilized voltage supply 1 is used to power frequency supply carrying out rectification and boosts and charged for storage capacitor,
Voltage output range is that 0~800V is adjustable；Storage capacitor 2 is used to store electric energy, and is discharged to loading head, and highest pressure voltage is
1200V, capacity are 3500 μ F, and controllable silicon 3 is used for the electric discharge for controlling storage capacitor, and highest withstanding voltage is 1400V, operating current
For 800A；
Four loading header structures are identical, and two loading heads are one group, every group be arranged in upper and lower symmetrical structure it is to be loaded
The upper and lower surface of metallic plate；Each loading head includes excitation coil 5 and permanent magnet 7, the excitation coil 5 and controllable silicon
3 output end connection, a permanent magnet is fixed in the left half of region on excitation coil top and/or right half of region.
It is of the present utility model to be further characterized by each loading head and include two permanent magnets 7 and an excitation coil 5,
Permanent magnet 7 uses neodymium iron boron N52 ferromagnetic materials, is shaped as U-shaped, two opposite polarities of permanent magnet 7 on same loading head, mutually
Adhesive forms E shape structures；Excitation coil 5 uses hollow rectangle skeleton, and excitation coil 5 is embedded in the E shape knots that permanent magnet 7 is formed
In the space of structure, loading head is combined into.
The wire of the present utility model being further characterized by the excitation coil 5 uses a diameter of 0.5-2mm enamel-covers
Copper conductor, the winding number of turn are 150-300 circles.
It is preferred that the wire on excitation coil 5 uses a diameter of 0.8-1.2mm enamel-covers copper conductor, the winding number of turn is 200-250
Circle.
The operation principle and process of the utility model loading system be：
Four loading heads are divided into two groups of both ends for being placed on metallic plate 6, every group of two loading heads, two loading heads first
The upper and lower surface of metallic plate is arranged in upper and lower symmetrical structure, as shown in Figure 4.Then using adjustable stabilized voltage supply 1 to energy storage electricity
Hold 2 chargings, triggering controllable silicon 3 by single-chip microcomputer 4 after charging turns on, and storage capacitor 2 discharges four excitation coils 5, swashs
Generation exciting current 8 in coil 5 is encouraged, the sense of current and excitation can be generated by being clipped in the metallic plate 6 among two excitation coils 5
The opposite inductive loop 9 (referring to Fig. 6) of electric current 8, only two works vertical with force direction of excitation coil 5 are wrapped up with U-shaped permanent magnet 7
With while (when excitation coil shares four, wherein two only vertical with force direction sides to produce power have effect, claiming the two
While being action edge, only permanent magnet is laid on the two sides), in the case where magnetostatic field 10 caused by permanent magnet 7 acts on, 6 liang of metallic plate
The inductive loop 9 at end will be acted on by the opposite Lorentz force 11 in direction, and stretching action is produced to metallic plate 6.Swashed by adjusting
Encourage direction of current flow in coil 5, it is possible to achieve the conversion of two kinds of loading effects of stretching and compression." ☉ " represents electric current in Fig. 6
Vertical paper inwards,Represent that the vertical paper of electric current is outside.
The utility model loading system can be applied to following two fields：
1. the mechanical property research of metal material：The tensile strength of metal material is tested, gradually steps up applied electromagnetic force,
In much field of loads plastic deformation occurs for observation material, and expendable nonplastic shape can occur beyond much field of loads
Become, can be broken when reaching what stress limit.
2. the Non-Destructive Testing of metal inside stress：
1. the on-line measurement of metal sonoelastic coefficient can be carried out.
2. improve the spatial resolution of Non-Destructive Testing：For it is more small, be difficult to the metal stresses that detect, this can be used to be
System expands stress, obtains more obvious testing result.Such as during using ultrasonic stress mornitoring method, stress present in metal
It is smaller, it is necessary to measure 4cm apart from upper ultrasonic propagation time, can just collect obvious velocity of wave change；If use this system
Stress is expanded, only may be needed in 2cm distances with regard to obvious sonic velocity change can be collected, this just reduces the sky needed for detection
Between, it can more reflect the stress state of certain point, improve the spatial resolution of detection.
Embodiment 1
Metal electromagnetism loading system of the present embodiment based on Lorentz force include adjustable stabilized voltage supply 1, storage capacitor 2, can
Control silicon 3, single-chip microcomputer 4 and four loading heads；The output end of the adjustable stabilized voltage supply 1 successively with storage capacitor 2, controllable silicon 3 and
Four loading head connections, the control port of controllable silicon are connected with single-chip microcomputer 4, and controlled silicon conducting is triggered by single-chip microcomputer 4；It is adjustable steady
Voltage source 1 is used to power frequency supply carrying out rectification and boosts and charged for storage capacitor；Storage capacitor 2 is used to store electric energy, and
Discharged to loading head, controllable silicon 3 is used for the electric discharge for controlling storage capacitor；
Four loading header structures are identical, and two loading heads are one group, every group be arranged in upper and lower symmetrical structure it is to be loaded
The upper and lower surface of metallic plate；Each loading head includes two permanent magnets 7 and an excitation coil 5, the excitation coil 5 and
The output end connection of controllable silicon 3；The permanent magnet 7 is shaped as U-shaped, two opposite polarities of permanent magnet 7 on same loading head, mutually
Attracted formation E shape structures；Excitation coil 5 uses hollow rectangle skeleton, and excitation coil 5 is embedded in the E shape knots that permanent magnet 7 is formed
In the space of structure, loading head is combined into.
Wire described in the present embodiment on excitation coil 5 uses a diameter of 0.8mm enamel-covers copper conductor, and the winding number of turn is 200
Circle, the permanent magnet use neodymium iron boron N52 ferromagnetic materials.The voltage output range of adjustable stabilized voltage supply 1 is that 0~80 0V is adjustable；
The highest pressure voltage of storage capacitor 2 is 1200V, and capacity is 3500 μ F；The highest withstanding voltage of controllable silicon 3 is 1400V, operating current
For 800A.
In order to verify the feasibility of the present embodiment loading system, produced electromagnetic force is entered using ultrasonic stress mornitoring method
Row measurement.The metallic plate to be loaded of the present embodiment is fine aluminium test specimen.
Theoretical calculation obtains, and when storage capacitor charges to 600V, loading system will can produce 2 MPas to fine aluminium test specimen
Electromagnetism tension.
When test specimen is in free state, the ultrasonic velocity in test specimen, measurement result 6458.3m/s are measured；By energy storage
Electric capacity charges to 600V, and electromagnetism stretching is carried out to fine aluminium test specimen, and measures ultrasonic velocity simultaneously, and measurement result is
6457.6m/s.According to stress in fine aluminium plate material and the proportionality coefficient of the velocity of sound, the corresponding stress of ultrasonic velocity change can obtain
For 2 MPas, the measurement result is identical with the calculated results, so as to demonstrate the practicality of the utility model loading system and essence
True property.
Embodiment 2
Metal electromagnetism loading system of the present embodiment based on Lorentz force include adjustable stabilized voltage supply 1, storage capacitor 2, can
Control silicon 3, single-chip microcomputer 4 and four loading heads；The output end of the adjustable stabilized voltage supply 1 successively with storage capacitor 2, controllable silicon 3 and
Four loading head connections, the control port of controllable silicon are connected with single-chip microcomputer 4, and controlled silicon conducting is triggered by single-chip microcomputer 4；It is adjustable steady
Voltage source 1 is used to power frequency supply carrying out rectification and boosts and charged for storage capacitor；Storage capacitor 2 is used to store electric energy, and
Discharged to loading head, controllable silicon 3 is used for the electric discharge for controlling storage capacitor；Four loadings header structure is identical, two loading heads
For one group, every group of upper and lower surface that metallic plate to be loaded is arranged in upper and lower symmetrical structure；Each loading head includes
One excitation coil 5 and a permanent magnet 7, the excitation coil 5 is connected with the output end of controllable silicon 3, on excitation coil top
Right half of region fix a permanent magnet.
The permanent magnet of the present embodiment is rectangle (referring to Fig. 7).Wire on the excitation coil 5 is using a diameter of
0.8mm enamel-cover copper conductors, the winding number of turn are 200 circles, and the permanent magnet uses neodymium iron boron N52 ferromagnetic materials.
Storage capacitor is charged into 600V, electromagnetism stretching is carried out to fine aluminium test specimen, and carry out ultrasonic stress mornitoring, electromagnetic force
Testing result is 0.45 MPa.
Embodiment 3
Metal electromagnetism loading system each several part of the present embodiment based on Lorentz force is connected with embodiment 2, and difference exists
U-shaped is used in the shape of permanent magnet 7, is wrapped in the right half of region (referring to Fig. 8) on the top of excitation coil 5.
Storage capacitor is charged into 600V, electromagnetism stretching is carried out to fine aluminium test specimen, and carry out ultrasonic stress mornitoring, electromagnetic force
Testing result is 1 MPa.
By the contrast of embodiment 2 and embodiment 3, when other conditions are all identical, using electric caused by U-shaped permanent magnet
Magnetic force illustrates that U-shaped permanent magnetism physical efficiency forms more preferable Distribution of Magnetic Field, generation than more than twice of the effect using rectangular permanent magnet
Bigger electromagnetic force.
By the contrast of embodiment 1 and embodiment 2, opposite polarity is installed simultaneously in two action edges of excitation coil 5
Permanent magnet when, caused electromagnetic force is only twice in installation magnet in an action edge, and this shows dual permanent-magnet
Structure electric energy is more fully utilized, avoid the waste of energy.
Above-mentioned storage capacitor, single-chip microcomputer, controllable silicon are commercially available.
The utility model does not address part and is applied to prior art.
Claims (7)
1. a kind of metal electromagnetism loading system based on Lorentz force, it is characterised in that the system includes adjustable stabilized voltage supply, storage
Can electric capacity, controllable silicon, single-chip microcomputer and four loading heads；The output end of the adjustable stabilized voltage supply successively with storage capacitor, controllable
Silicon and four loading head connections, the control port of controllable silicon are connected with single-chip microcomputer, and controlled silicon conducting is triggered by single-chip microcomputer；It is described
Four loading header structures are identical, and two loading heads are one group, and every group is arranged in metallic plate to be loaded in upper and lower symmetrical structure
Upper and lower surface；Each loading head includes excitation coil and permanent magnet, and the output end of the excitation coil and controllable silicon connects
Connect, a permanent magnet is fixed in the left half of region on excitation coil top and/or right half of region.
2. the metal electromagnetism loading system according to claim 1 based on Lorentz force, it is characterised in that each loading head
Include two permanent magnets, two permanent magnet polarities on same loading head are on the contrary, mutual attracted formation E shape structures, excitation line
In the space for the E shape structures that the embedded permanent magnet of circle is formed.
3. the metal electromagnetism loading system according to claim 1 based on Lorentz force, it is characterised in that the permanent magnet
It is shaped as U-shaped.
4. the metal electromagnetism loading system according to claim 1 based on Lorentz force, it is characterised in that excitation coil is adopted
With hollow rectangle skeleton.
5. the metal electromagnetism loading system according to claim 1 based on Lorentz force, it is characterised in that the excitation line
Wire on circle uses a diameter of 0.5-2mm enamel-covers copper conductor, and the winding number of turn is 150-300 circles.
6. the metal electromagnetism loading system according to claim 1 based on Lorentz force, it is characterised in that the excitation line
Wire on circle uses a diameter of 0.8-1.2mm enamel-covers copper conductor, and the winding number of turn is 200-250 circles.
7. the metal electromagnetism loading system according to claim 1 based on Lorentz force, it is characterised in that adjustable voltage stabilizing electricity
The voltage output range in source is that 0~800V is adjustable；The highest pressure voltage of storage capacitor is 1200V, and capacity is 3500 μ F；Controllable silicon
Highest withstanding voltage is 1400V, operating current 800A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720841388.7U CN206990351U (en) | 2017-07-12 | 2017-07-12 | Metal electromagnetism loading system based on lorentz force |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720841388.7U CN206990351U (en) | 2017-07-12 | 2017-07-12 | Metal electromagnetism loading system based on lorentz force |
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| Publication Number | Publication Date |
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| CN206990351U true CN206990351U (en) | 2018-02-09 |
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ID=61405325
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| CN201720841388.7U Expired - Fee Related CN206990351U (en) | 2017-07-12 | 2017-07-12 | Metal electromagnetism loading system based on lorentz force |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192615A (en) * | 2017-07-12 | 2017-09-22 | 河北工业大学 | Metal electromagnetism loading system based on Lorentz force |
| CN109946180A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | A kind of pulse force loading device and method suitable for metal tube one directional tensile test |
| CN109946179A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | A kind of electromagnetism force loading device and its method suitable for metal tube one directional tensile test |
| CN109946181A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | It is a kind of for testing the device and method of metallic welded tubes part connector impact strength |
| CN109946182A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | A kind of pulse force loading device and its method suitable for sheet metal biaxial tensile test |
-
2017
- 2017-07-12 CN CN201720841388.7U patent/CN206990351U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192615A (en) * | 2017-07-12 | 2017-09-22 | 河北工业大学 | Metal electromagnetism loading system based on Lorentz force |
| CN107192615B (en) * | 2017-07-12 | 2024-03-15 | 河北工业大学 | Lorentz force-based metal electromagnetic loading system |
| CN109946180A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | A kind of pulse force loading device and method suitable for metal tube one directional tensile test |
| CN109946179A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | A kind of electromagnetism force loading device and its method suitable for metal tube one directional tensile test |
| CN109946181A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | It is a kind of for testing the device and method of metallic welded tubes part connector impact strength |
| CN109946182A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | A kind of pulse force loading device and its method suitable for sheet metal biaxial tensile test |
| CN109946182B (en) * | 2019-03-18 | 2022-02-01 | 三峡大学 | Pulse force loading device and method suitable for sheet metal biaxial tension test |
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