CN208937245U - A kind of explosive residual stress supersonic testing method sound bullet factor calibration device - Google Patents
A kind of explosive residual stress supersonic testing method sound bullet factor calibration device Download PDFInfo
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- CN208937245U CN208937245U CN201821435206.7U CN201821435206U CN208937245U CN 208937245 U CN208937245 U CN 208937245U CN 201821435206 U CN201821435206 U CN 201821435206U CN 208937245 U CN208937245 U CN 208937245U
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- residual stress
- calibration device
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Abstract
The utility model relates to explosive residual stress detection fields, and in particular to a kind of explosive residual stress supersonic testing method sound bullet factor calibration device, including digital material testing machine and ultrasonic stress gauge；Digital material testing machine includes explosive clamping jaw and clamp of tensile machine, and the fixing groove being caught in for explosive sample is offered on explosive clamping jaw, and the shape of fixing groove is matched with the shape of explosive sample, cover board is provided on explosive clamping jaw, clamp of tensile machine is connect with puller system；Ultrasonic stress gauge includes rack, and railroad is equipped in rack, is fixed with ultrasonic sensor on railroad；Ultrasonic sensor includes ultrasonic probe stent and ultrasonic probe, and ultrasonic probe is fixed in ultrasonic probe stent, flexible part between ultrasonic probe stent.The utility model can demarcate the sound time difference-curve of load when explosive sample offered load, the calibration suitable for explosive sample sonoelastic coefficient.
Description
Technical field
The utility model relates to explosive residual stress detection fields, and in particular to a kind of explosive residual stress supersonic testing method
Sound bullet factor calibration device.
Background technique
Plastic bonded explosive (Polymer Bonded Explosives, abbreviation PBX), be by high energy single chmical compound explosive and
The important high explosive of one kind of the compositions such as high polymer adhesive.PBX be it is hot-forming by modeling powder, in forming process because
Ambient pressure effect occurs different degrees of elastic-plastic deformation, can put aside certain elastic strain energy after pressure removal, generates remaining
Stress, it may be said that residual stress is a kind of invisible defect in PBX explosive.However, PBX explosive in use by temperature,
The such environmental effects such as stress are significant, sensitive compared with strong stimulation to the external world, therefore, carry out plastic bonded explosive residual stress test
There is important theoretical realistic meaning with characterization.
Since there are safety issues for explosive residual stress test, lossless physical measure is generally used, is applied at present
It is most widely X-ray diffraction method.But X-ray penetration capacity is limited, can only measure the stress of several micron thickness in sample surface layer；And
And there is radiation, long period of operation personnel have the risk there are occupational disease.Compared with X-ray diffraction method, ultrasonic measurement has precision
Height, can fathom big, high accuracy for examination, and measurement method is simple, can be with field work.
When using ultrasound checking explosive residual stress, needs first to demarcate the sonoelastic coefficient of explosive, make
One load-sound time difference standard curve, it is subsequent explosive is measured when, only need to measure its sound time difference, mark can be corresponded to
Directrix curve learns its load (as residual stress).In the calibration process of explosive sonoelastic coefficient, need to carry out PBX explosive
Load elongation, most widely used at present puller system are universal testing machine, but due to the particularity of PBX explosive detection, are needed
Supersonic detection device is combined with puller system, there are no this detection devices on the market at present.
Utility model content
To solve the above problems, the utility model provides a kind of explosive residual stress supersonic testing method sound bullet coefficient calibration
Device is implemented with the following technical solutions:
A kind of explosive residual stress supersonic testing method sound bullet factor calibration device, including digital material testing machine and ultrasound are answered
Power instrument is set；The digital material testing machine includes explosive clamping jaw and clamp of tensile machine, is offered on the explosive clamping jaw for explosive
The shape of the fixing groove that sample is caught in, the fixing groove is matched with the shape of explosive sample, is provided with lid on the explosive clamping jaw
Plate, the clamp of tensile machine are connect with puller system；The ultrasound stress gauge is set including rack, and sliding rail dress is equipped in the rack
It sets, is fixed with ultrasonic sensor on the railroad；The ultrasonic sensor includes that ultrasonic probe stent and ultrasound are visited
Head, the ultrasonic probe are fixed in ultrasonic probe stent, flexible part between the ultrasonic probe stent.
The working principle of the utility model are as follows: explosive sample is placed in the fixing groove of explosive clamping jaw, with cover board by its
It is fixed；Ultrasonic sensor is provided in rack, ultrasonic sensor includes ultrasonic probe stent and ultrasonic probe, ultrasonic probe
Ultrasonic probe is fixed on the two sides of explosive sample by bracket, and flexible part between ultrasonic probe stent can be by the spy of ultrasonic probe
Survey face is fitted in completely on explosive sample, installs ultrasonic sensor on the railroad of rack, can make ultrasonic sensor
Mobile with sliding rail, to preferably control the distance between ultrasonic probe, ultrasonic probe is easily fixed when detecting tries in explosive
Sample two sides, ultrasonic probe can also be readily far from explosive sample after detection.The utility model can demarcate the load of explosive sample
The sound time difference-curve of load when load, puller system pulls clamp of tensile machine, so that the explosive sample in explosive clamping jaw be driven to draw
It stretches, measurement of the supersonic detection device to the explosive sample carry out sound time difference, thus the sound time difference-curve of load demarcated.
Preferably, the rack includes crossbeam pillar, height pillar and stabilizer blade；The crossbeam pillar passes through two angled pieces
It is fixed on the upside of height pillar, the stabilizer blade is fixed on the downside of height pillar, and the end of the crossbeam pillar and stabilizer blade is equal
There is end cap.
Preferably, the railroad includes track of sliding track, displaced block and limited block, and the limited block is arranged in cunning
The both ends of rail track, the displaced block can be slided on track of sliding track.
Preferably, there are two the ultrasonic probes, a ultrasonic probe is for emitting ultrasonic signal, another ultrasonic probe
For receiving ultrasonic signal.
Preferably, the groove that the ultrasonic probe has close to the side of explosive sample, for holding couplant.
Preferably, the groove is 0.05-0.06mm.
Preferably, described ultrasonic probe stent the upper side and lower side is provided with elastic component.
Preferably, the fixing groove is cambered with the corresponding position of explosive sample corner.
Preferably, the explosive sample refers in particular to PBX explosive sample.
Preferably, the cover board is detachable.
In conclusion the utility model has the advantage that
One, a kind of explosive residual stress supersonic testing method sound bullet factor calibration device of the utility model design, can demarcate
The sound time difference-curve of load when explosive sample offered load, the calibration suitable for explosive sample sonoelastic coefficient.
Two, ultrasonic probe can be tightly attached to completely the two sides of explosive sample, prevented by flexible part between ultrasonic probe stent
Ultrasonic wave energy attenuation in communication process causes measurement inaccuracy.
Three, rack includes crossbeam pillar, height pillar and stabilizer blade, and crossbeam pillar is fixed on height by two angled pieces and props up
The upside of column, stabilizer blade are fixed on the downside of height pillar, and there is end cap in the end of crossbeam pillar and stabilizer blade.What rack can consolidate puts
The work for making that rack-mounted railroad and ultrasonic sensor can be stable in the plane is set, to make ultrasound
Probe preferably emits and catcher ultrasonic wave, measures accurate data.
Four, railroad includes track of sliding track, displaced block and limited block, and the two of track of sliding track are arranged in limited block
End, displaced block can be slided on track of sliding track.Railroad can make ultrasonic sensor have mobility, can move on the slide rail
Dynamic, the both ends of railroad are provided with limited block, can prevent falling off for displaced block, guarantee the safety of ultrasonic sensor.
Five, there are two ultrasonic probes, a ultrasonic probe is for emitting ultrasonic signal, another ultrasonic probe is for receiving
Ultrasonic signal.Since material acoustic attenuation is obvious, such design can reduce the energy attenuation during acoustic propagation.In addition, due to
The acoustic propagation velocity of material itself is lower, and range is in 1500~1800m/s, surface critical refracted longitudinal wave or surface wave probe manufacture
Do not have feasibility, therefore chooses internal longitudinal wave as residual stress and evaluate and test carrier.
Six, the groove that ultrasonic probe has close to the side of explosive sample, groove 0.05-0.06mm, for holding coupling
Agent.Couplant is so that ultrasonic energy is effectively penetrated workpiece for excluding the air between probe and testee and reach detection
Purpose.When use is in smooth material surface, the couplant of low viscosity can be used；When use is in rough surface, vertical surface
And when top surface, the high couplant of viscosity should be used；High temperature workpiece should select high-temperature coupling agent.Couplant should use in right amount, apply
It smears uniformly, couplant should be generally coated in the surface of measured material, but when measurement temperature is higher, couplant should be coated in ultrasonic spy
On head.
Seven, ultrasonic probe stent the upper side and lower side is provided with elastic component, can make ultrasonic probe uniform force, is tightly attached to fried
On the surface of medicine sample, keep the data of measurement more accurate.
Eight, for fixing groove cambered with the corresponding position of explosive sample corner, explosive sample is more fragile, answers in measurement
It prevents explosive sample turning from touching fixing groove, in order to avoid causing to explode, causes safety problem.
Nine, explosive sample refers in particular to PBX explosive sample, plastic bonded explosive (Polymer BondedExplosives, letter
Claim PBX), a kind of important high explosive being made of high energy single chmical compound explosive and high polymer adhesive etc..PBX is by modeling powder
Hot-forming, because ambient pressure acts in forming process, different degrees of elastic-plastic deformation occurs, can be put aside after pressure removal
Certain elastic strain energy generates residual stress, it may be said that residual stress is a kind of invisible defect in PBX.However, PBX exists
It is significant by such environmental effects such as temperature, stress in use process, it is sensitive compared with strong stimulation to the external world, therefore, it is viscous to carry out high polymer
Tying explosive residual stress test and characterization has important theoretical realistic meaning.
Ten, cover board is detachable, takes out after testing and test after facilitating explosive sample to install.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model explosive sonoelastic coefficient ultrasound caliberating device；
Fig. 2 uses schematic diagram for the utility model digital material testing machine；
Fig. 3 is the utility model railroad and ultrasonic sensor schematic diagram.
Appended drawing reference:
1, rack, 2, railroad, 3, ultrasonic sensor, 4, explosive clamping jaw, 5, clamp of tensile machine, 6, explosive sample,
7, fixing groove, 8, crossbeam pillar, 9, height pillar, 10, stabilizer blade, 11, end cap, 12, track of sliding track, 13, displaced block, 14, limit
Block, 15, cover board, 16, ultrasonic probe stent, 17, ultrasonic probe, 18, groove
Specific embodiment
In order to make those skilled in the art better understand the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical solutions in the embodiments of the present invention are clearly and completely described.
As shown, a kind of explosive residual stress supersonic testing method sound bullet factor calibration device, including digital material test
Machine and ultrasonic stress gauge are set；Digital material testing machine includes explosive clamping jaw 4 and clamp of tensile machine 5, offers confession on explosive clamping jaw 4
The shape of the fixing groove 7 that explosive sample 6 is caught in, fixing groove 7 is matched with the shape of explosive sample 6, and lid is provided on explosive clamping jaw 4
Plate 15, clamp of tensile machine 5 are connect with puller system；Ultrasonic stress gauge is set including rack 1, is equipped with railroad 2 in rack 1, sliding
Ultrasonic sensor 3 is fixed on rail device 2；Ultrasonic sensor 3 includes ultrasonic probe stent 16 and ultrasonic probe 17, ultrasound
Probe 17 is fixed in ultrasonic probe stent 16, flexible part between ultrasonic probe stent 16.
Explosive sample 6 is placed in the fixing groove 7 of explosive clamping jaw 4, is fixed with cover board 15；It is provided in rack 1
Ultrasonic sensor 3, ultrasonic sensor 3 include ultrasonic probe stent 16 and ultrasonic probe 17, and ultrasonic probe stent 16 will surpass
Sonic probe 17 is fixed on the two sides of explosive sample 6, and flexible part between ultrasonic probe stent 16 can be by the detection of ultrasonic probe 17
Face is fitted in completely on explosive sample 6, and ultrasonic sensor 3 is installed on the railroad 2 of rack 1, supersonic sounding can be made to fill
It is mobile with sliding rail to set 3, to preferably control the distance between ultrasonic probe 17, ultrasonic probe 17 is easily fixed when detecting
6 two sides of explosive sample, ultrasonic probe 17 can also be readily far from explosive sample 6 after detection.Between ultrasonic probe stent 16
Ultrasonic probe 17 can be tightly attached to completely the two sides of explosive sample 6 by flexible part, prevent ultrasonic wave energy in communication process from declining
Subtract, causes measurement inaccuracy.The utility model can demarcate the sound time difference-curve of load when explosive 6 offered load of sample, puller system
Pull clamp of tensile machine 5, so that the explosive sample 6 in explosive clamping jaw 4 be driven to stretch, supersonic detection device to explosive sample 6 into
The measurement of the row sound time difference, thus the sound time difference-curve of load demarcated.The utility model design can demarcate explosive sample 6 and add
Load with the sound time difference-curve of load when load, the calibration suitable for 6 sonoelastic coefficient of explosive sample.
Rack 1 includes crossbeam pillar 8, height pillar 9 and stabilizer blade 10, and crossbeam pillar 8 is fixed on height by two angled pieces
The upside of pillar 9 is spent, stabilizer blade 10 is fixed on the downside of height pillar 9, and there is end cap 11 in the end of crossbeam pillar 8 and stabilizer blade 10.
The placement that rack 1 can consolidate in the plane, stablize the railroad being mounted in rack 12 and ultrasonic sensor 3 can
Work, thus make ultrasonic probe 17 preferably transmitting and catcher ultrasonic wave, measure accurate data.
Railroad 2 includes track of sliding track 12, displaced block 13 and limited block 14, and limited block 14 is arranged in track of sliding track
12 both ends, displaced block 13 can be slided on track of sliding track 12.Railroad 2 can make ultrasonic sensor 3 have mobility, can
It moves on the slide rail, the both ends of railroad 2 are provided with limited block 14, can prevent falling off for displaced block 13, guarantee that ultrasound is visited
Survey the safety of device 3.
There are two ultrasonic probes 17, and for emitting ultrasonic signal, another ultrasonic probe 17 is used for a ultrasonic probe 17
Receive ultrasonic signal.Since material acoustic attenuation is obvious, such design can reduce the energy attenuation during acoustic propagation.In addition,
Since the acoustic propagation velocity of material itself is lower, range is in 1500~1800m/s, surface critical refracted longitudinal wave or surface wave probe
Manufacture does not have feasibility, therefore chooses internal longitudinal wave as residual stress and evaluate and test carrier.
The groove 18 that ultrasonic probe 17 has close to the side of explosive sample 6, groove 18 is 0.05-0.06mm, for holding
Couplant.Couplant is so that ultrasonic energy is effectively penetrated workpiece for excluding the air between probe and testee and reach
Testing goal.When use is in smooth material surface, the couplant of low viscosity can be used；When use is in rough surface, vertical
When surface and top surface, the high couplant of viscosity should be used；High temperature workpiece should select high-temperature coupling agent.Couplant should make in right amount
With couplant uniformly, should be generally coated in the surface of measured material by smearing, but when measurement temperature is higher, couplant should be coated in
On ultrasonic probe 17.
16 the upper side and lower side of ultrasonic probe stent is provided with elastic component, can make 17 uniform force of ultrasonic probe, be tightly attached to
On the surface of explosive sample 6, keep the data of measurement more accurate.
For fixing groove 7 cambered with the corresponding position of 6 corner of explosive sample, explosive sample 6 is more fragile, answers in measurement
It prevents 6 turning of explosive sample from touching fixing groove 7, in order to avoid causing to explode, causes safety problem.
Explosive sample 6 refers in particular to PBX explosive sample 6, plastic bonded explosive (Polymer Bonded Explosives, letter
Claim PBX), a kind of important high explosive being made of high energy single chmical compound explosive and high polymer adhesive etc..PBX is by modeling powder
Hot-forming, because ambient pressure acts in forming process, different degrees of elastic-plastic deformation occurs, can be put aside after pressure removal
Certain elastic strain energy generates residual stress, it may be said that residual stress is a kind of invisible defect in PBX.However, PBX exists
It is significant by such environmental effects such as temperature, stress in use process, it is sensitive compared with strong stimulation to the external world, therefore, it is viscous to carry out high polymer
Tying explosive residual stress test and characterization has important theoretical realistic meaning.
Cover board 15 is detachable, takes out after testing and test after facilitating explosive sample 6 to install.
The above is preferred embodiments of the present invention, is not departed from for those of ordinary skill in the art
Under the premise of the utility model principle, several variations and modifications can also be made, these also should be regarded as the protection of the utility model
Range.
Although rack 1, railroad 2, ultrasonic sensor 3, explosive clamping jaw 4, puller system folder is used more herein
Tool 5, explosive sample 6, fixing groove 7, crossbeam pillar 8, height pillar 9, stabilizer blade 10, end cap 11, track of sliding track 12, displaced block 13,
It the terms such as limited block 14, cover board 15, ultrasonic probe stent 16, ultrasonic probe 17, groove 18 but is not precluded using other arts
A possibility that language.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；They are solved
It is contrary to the spirit of the present invention for being interpreted into any additional limitation all.
Claims (10)
1. a kind of explosive residual stress supersonic testing method sound bullet factor calibration device, it is characterised in that: tested including digital material
Machine and ultrasonic stress gauge；
The digital material testing machine includes explosive clamping jaw (4) and clamp of tensile machine (5), is offered on the explosive clamping jaw (4)
For the fixing groove (7) that explosive sample (6) is caught in, the shape of the fixing groove (7) is matched with the shape of explosive sample (6), described
It is provided on explosive clamping jaw (4) cover board (15), the clamp of tensile machine (5) connect with puller system；
The ultrasound stress gauge includes rack (1), is equipped with railroad (2) on the rack (1), the railroad (2)
On be fixed with ultrasonic sensor (3)；
The ultrasonic sensor (3) includes ultrasonic probe stent (16) and ultrasonic probe (17), and the ultrasonic probe (17) is solid
It is scheduled on ultrasonic probe stent (16), flexible part between the ultrasonic probe stent (16).
2. a kind of explosive residual stress supersonic testing method sound bullet factor calibration device according to claim 1, feature exist
In: the rack (1) includes crossbeam pillar (8), height pillar (9) and stabilizer blade (10)；The crossbeam pillar (8) is straight by two
Corner fittings is fixed on the upside of height pillar (9), and the stabilizer blade (10) is fixed on the downside of height pillar (9), the crossbeam pillar
(8) and the end of stabilizer blade (10) has end cap (11).
3. a kind of explosive residual stress supersonic testing method sound bullet factor calibration device according to claim 1, feature exist
In: the railroad (2) includes track of sliding track (12), displaced block (13) and limited block (14), the limited block (14)
Both ends in track of sliding track (12) are set, and the displaced block (13) can be slided on track of sliding track (12).
4. a kind of explosive residual stress supersonic testing method sound bullet factor calibration device according to claim 1, feature exist
In: there are two the ultrasonic probes (17), and a ultrasonic probe (17) is for emitting ultrasonic signal, another ultrasonic probe (17)
For receiving ultrasonic signal.
5. a kind of explosive residual stress supersonic testing method sound bullet factor calibration device according to claim 1, feature exist
In: the groove (18) that the ultrasonic probe (17) has close to the side of explosive sample (6), for holding couplant.
6. a kind of explosive residual stress supersonic testing method sound bullet factor calibration device according to claim 5, feature exist
In: the groove (18) is 0.05-0.06mm.
7. a kind of explosive residual stress supersonic testing method sound bullet factor calibration device according to claim 1, feature exist
In: described ultrasonic probe stent (16) the upper side and lower side is provided with elastic component.
8. a kind of explosive residual stress supersonic testing method sound bullet factor calibration device according to claim 1, feature exist
In: the fixing groove (7) is cambered with the corresponding position of explosive sample (6) corner.
9. a kind of explosive residual stress supersonic testing method sound bullet factor calibration device according to claim 1, feature exist
In: the explosive sample (6) refers in particular to PBX explosive sample.
10. a kind of explosive residual stress supersonic testing method sound bullet factor calibration device according to claim 1, feature exist
In: the cover board (15) is detachable.
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| CN201821435206.7U CN208937245U (en) | 2018-09-03 | 2018-09-03 | A kind of explosive residual stress supersonic testing method sound bullet factor calibration device |
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| CN201821435206.7U CN208937245U (en) | 2018-09-03 | 2018-09-03 | A kind of explosive residual stress supersonic testing method sound bullet factor calibration device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827533A (en) * | 2018-09-03 | 2018-11-16 | 杭州戬威机电科技有限公司 | A kind of explosive residual stress supersonic testing method sound bullet factor calibration device |
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2018
- 2018-09-03 CN CN201821435206.7U patent/CN208937245U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827533A (en) * | 2018-09-03 | 2018-11-16 | 杭州戬威机电科技有限公司 | A kind of explosive residual stress supersonic testing method sound bullet factor calibration device |
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Address after: Room 301-302, Building 3, No. 258 Xiqin Street, Wuchang Street, Yuhang District, Hangzhou City, Zhejiang Province, 310023 Patentee after: Hangzhou Jianwei Technology Co.,Ltd. Address before: 310000 Room 502, 5 / F, building 2, 768 Jingchang Road, Wuchang Street, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU JIANWEI MECHANICAL & ELECTRICAL TECHNOLOGY Co.,Ltd. |