CN109520818A - A kind of high polymer bonding explosive test method and test tool - Google Patents
A kind of high polymer bonding explosive test method and test tool Download PDFInfo
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- CN109520818A CN109520818A CN201811549293.3A CN201811549293A CN109520818A CN 109520818 A CN109520818 A CN 109520818A CN 201811549293 A CN201811549293 A CN 201811549293A CN 109520818 A CN109520818 A CN 109520818A
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 239000002360 explosive Substances 0.000 title claims abstract description 33
- 229920000642 polymer Polymers 0.000 title claims abstract description 29
- 238000010998 test method Methods 0.000 title claims abstract description 21
- 239000011888 foil Substances 0.000 claims description 13
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 9
- 238000004154 testing of material Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000006378 damage Effects 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims 1
- 238000007689 inspection Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004088 simulation Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 4
- 238000011068 loading method Methods 0.000 abstract description 3
- 230000001413 cellular effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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- 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
-
- 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
- G01N3/06—Special adaptations of indicating or recording means
-
- 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
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/066—Special adaptations of indicating or recording means with electrical indicating or recording means
-
- 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
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
-
- 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
- G01N2203/0067—Fracture or rupture
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0658—Indicating or recording means; Sensing means using acoustic or ultrasonic detectors
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Abstract
The invention discloses a kind of high polymers to be bonded explosive test method, is related to high polymer bonding explosive technical field comprising: test specimen is hemispherical Shell;Test procedure includes: erection measuring system;Pass through load and strain test constitutive relation and failure criteria;The size and ratio of hemispherical Shell outer diameter and inner diameter are adjusted, repeats to test, the dimensional effect of material is assessed.The present invention also provides a kind of high polymers to be bonded explosive test tooling.High polymer bonding explosive test method of the invention is by setting test specimen on Loadings On Hemispherical Shell, being provided simultaneously with it, structure is simple, is able to carry out complex stress condition test and feature that fidelity is high, it can in test simplify and operate and be used for numerical simulation and inspection, constitutive relation, the inspection of failure criteria and the assessment of dimensional effect can be reliably used for.
Description
Technical field
The present invention relates to high polymers to be bonded explosive technical field, and in particular to a kind of high polymer bonding explosive test method and
Test tool.
Background technique
High polymer bonding explosive (PBX) is the composite explosives made of high polymer coats single chmical compound explosive, is militarily had
Extensive purposes.Binder keeps explosive easy to form, while reducing the sensitivity of explosive, can handle comparatively safely so fried
Medicine.
High polymer bonding explosive mainly establishes constitutive relation according to uniaxial test, and establishes and break referring to the destruction of fragile material
Bad criterion, but these constitutive relations and failure criteria have it is to be tested.For standard spherical shell due to symmetry, structure is simple and is easy to simulate
Complex stress condition develops a kind of test method of standard, and this method is accurate and reliable, to verify constitutive relation and destroy quasi-
Then, numerical simulation result is checked.
Summary of the invention
It is an object of the invention to overcome the problems, such as that test method is complex in the prior art, reliability is not high, provide
A kind of high polymer bonding explosive test method and test tool, simply and simulation complex stress condition with testpieces structure
Feature can be used for constitutive relation, the inspection of failure criteria and the assessment of dimensional effect.
The purpose of the invention is achieved by the following technical solution:
A kind of high polymer bonding explosive test method, test specimen is hemispherical Shell;Test procedure includes:
The hemispherical Shell is horizontally arranged by step a. in the downward mode of opening direction, in hemispherical Shell outer surface test position
It arranges foil gauge, sets up three-dimensional speckle strain measurement system;
Step b. applies load to each test position in hemispherical Shell outer surface by Material Testing Machine, passes through foil gauge and three-dimensional
Speckle strain measurement system acquisition calculates hemisphere shell sape variable displacement and strain;
Step c. is loaded into destruction to hemispherical Shell by Material Testing Machine, acquires breaking load and strain data.
Preferably, replacing internal-and external diameter size and/or the different hemispherical Shell test specimen of ratio, again after completing step c
Carry out step a-c test.
Preferably, the step b further includes setting acoustic emission detection system, the sound of the acoustic emission detection system is sent out
Probe is penetrated to be pasted on hemispherical Shell outer surface.
Preferably, the foil gauge is at least a pair of, each pair of foil gauge is symmetrically arranged in hemispherical Shell outer surface
Two sides.
Preferably, the step a further include: cover bed course on the load position of hemispherical Shell outer surface, hemispherical Shell is surveyed
The surface for trying position uses alcohol washes, with white paint in hemispherical Shell test position jet background, then in the same size using pitch-dark spraying,
The speckle point being evenly distributed.
Preferably, the bed course is polyurethane cellular bed course.
Preferably, the hemispherical Shell is equipped with groove and aperture.
A kind of high polymer bonding explosive test tooling, including pedestal, bottom plate and load spherical shell, the bottom plate is by adjusting spiral shell
Nail is fixedly connected on pedestal, and the load spherical shell is adapted with the hemispherical Shell, and the load spherical shell is equipped with aligning block.
Preferably, being equipped with aperture in the middle part of the bottom plate and base plate.
The present invention compared with the prior art, have the following advantages that and the utility model has the advantages that
(1) test specimen hemispherical Shell of the invention belongs to three-dimensional structure in shape, while it also has that structure is simple, energy
Complex stress condition test and the high feature of fidelity are enough carried out, can in test be simplified and be operated and accurately carry out Numerical-Mode
Inspection is fitted, constitutive relation, the inspection of failure criteria and the assessment of dimensional effect can be reliably used for.
(2) high polymer of the invention bonding explosive test tooling can carry hemispherical Shell test specimen, and energy
It is enough to be uniformly distributed in the load that Material Testing Machine is loaded on each force part of hemispherical Shell by aligning block and load spherical shell,
So that can either obtain the mechanical property of each test position of hemispherical Shell in test, while can also symmetrically be surveyed on hemispherical Shell
The consistency at examination position is observed.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of hemispherical Shell in the present invention.
Fig. 2 is the structural schematic diagram of pedestal and bottom plate in the present invention.
Fig. 3 is the structural schematic diagram that spherical shell and aligning block are loaded in the present invention.
Fig. 4 is the front view of the load schematic diagram of hemispherical Shell.
Fig. 5 is the strain that resistance-strain built-in testing obtains in embodiment.
Fig. 6 is surveyed the horizontal direction displacement field in load by speckle in embodiment.
Wherein, title corresponding to the appended drawing reference in attached drawing are as follows:
1- hemispherical Shell, 2- foil gauge, 3- acoustic emission probe, 4- bed course, 5- pedestal, 6- bottom plate, 7- load spherical shell, 8- aligning
Block, 9- adjust screw, 10- aperture.
Specific embodiment
The present invention is described in further detail below with reference to embodiment:
As shown in Figure 1 and Figure 4, a kind of high polymer is bonded explosive test method, and test specimen is hemispherical Shell 1;Test procedure
Include: a. to be horizontally arranged the hemispherical Shell 1 in the downward mode of opening direction, is arranged in 1 outer surface test position of hemispherical Shell
Foil gauge 2 sets up three-dimensional speckle strain measurement system;B. load is applied to 1 outer surface of hemispherical Shell by Material Testing Machine, passed through
Foil gauge 2 and three-dimensional speckle strain measurement system acquisition hemisphere shell sape variable displacement and strain;C. by Material Testing Machine to hemisphere
Shell is loaded into destruction, acquires breaking load and strain data.
Wherein, test specimen hemispherical Shell 1 is made of high polymer bonding explosive.Hemispherical Shell 1 belongs to three-dimensional structure in shape,
It also has that structure is simple, is able to carry out complex stress condition test and feature that fidelity is high simultaneously, in test being capable of letter
Change and operate and accurately carry out numerical simulation and inspection, the inspection and size of constitutive relation, failure criteria can be reliably used for
The assessment of effect.By hemispherical Shell 1 with the downward mode of opening direction it is horizontal positioned be to load when produce inside and outside upper and lower surface
Raw different stress state.The effect of foil gauge 2 and three-dimensional speckle strain measurement system is recorded to strain, and step is passed through
B, the load of step c, strain data complete the inspection to high polymer bonding explosive constitutive relation, failure criteria.
On the basis of the above embodiment, after completing step c, internal-and external diameter size and/or the different hemisphere of ratio are replaced
Shell test specimen re-starts step a-c test.After completing step c, 1 sample of hemispherical Shell in the test has been damaged, in order to
The properties and dimensional effect data verified and continue to collect high polymer bonding explosive can be replaced after completing step c
Internal-and external diameter size and/or different 1 test specimen of hemispherical Shell of ratio repeat step a-c test.Wherein, hemispherical Shell 1 is adjusted
The size of internal-and external diameter can reflect different stress state and failure mode, so as to help experimenter improve constitutive relation and
The foundation of failure criteria.The ratio of adjustment 1 internal-and external diameter of hemispherical Shell can then investigate the dimensional effect of the high polymer material.
As shown in figure 4, on the basis of the above embodiment, the step b further includes setting acoustic emission detection system, it will
The acoustic emission probe 3 of the acoustic emission detection system is pasted on hemispherical Shell outer surface.Acoustic emission detection system can pass through sound
Transmitting probe captures the stress wave generated inside hemispherical Shell 1 by strain loaded, so as to obtain during the test
Damage Evolution information inside hemispherical Shell 1.
As shown in figure 4, on the basis of the above embodiment, the foil gauge is at least a pair of, each pair of foil gauge
It is symmetrically arranged in 1 outer surface two sides of hemispherical Shell.In test, load should be symmetrically and evenly loaded on hemispherical Shell, with inspection
Surveying each position performance of hemispherical Shell 1 whether there is difference in impact loaded.
As shown in figure 4, on the basis of the above embodiment, the step a further include: in the non-of 1 outer surface of hemispherical Shell
It is covered with bed course 4 in test position, the surface of 1 test position of hemispherical Shell is used into alcohol washes, is tested with white paint in hemispherical Shell 1
Position jet background, then speckle point that is in the same size using pitch-dark spraying, being evenly distributed.Using spray-coated white paint background color after alcohol washes
The outer surface of 1 test position of hemispherical Shell can be made to form preferable contrast with pitch-dark speckle point, so that three-dimensional speckle be made to strain
Measuring system data result calculated is more accurate.
On the basis of the above embodiment, the bed course 4 is polyurethane cellular bed course.Bed course plays the work of transmitting load
With.Polyurethane cellular material has the characteristics that Poisson's ratio very little, hardly extends after pressure loading on it, can be close
Its area will not change before and after seemingly thinking loaded load, therefore will not influence numerical simulation calculation.
On the basis of the above embodiment, the hemispherical Shell 1 is equipped with groove and aperture.In the certain bits of hemispherical Shell 1
After installing groove and aperture, the stress at hole slot can be examined to concentrate by load test, examine constitutive relation and destroy quasi-
Then.
As shown in Figures 2 to 4, a kind of high polymer is bonded explosive test tooling, including pedestal 5, bottom plate 6 and load spherical shell 7,
The bottom plate 6 is fixedly connected on pedestal 5 by adjusting screw 9, and the load spherical shell 7 is adapted with the hemispherical Shell 1, described
It loads spherical shell 7 and is equipped with aligning block 8.In test, experimental condition is simulation perfect condition, for example symmetrically adds load
To meet this condition as far as possible when being downloaded on hemispherical Shell 1, therefore testing.Wherein, the load design of Material Testing Machine is to pass through
Load spherical shell 7, which is applied on bed course, to be reloaded to hemispherical Shell 1, therefore load spherical shell 7 is set to be adapted with hemispherical Shell 1
Shape.The effect for the aligning block 8 being arranged on load spherical shell 7 is exactly that load is directly contacted and born with Material Testing Machine, into
And it by uniform load is distributed to load spherical shell 7.Load passes through on bed course 4 uniform load to explosive spherical shell, to realize soft connect
Touching, bottom plate 6 can be leveled by adjusting screw 9, to guarantee that hemispherical Shell 1 can be horizontally arranged.
On the basis of the above embodiment, aperture 10 is equipped in the middle part of the bottom plate 6 and pedestal 5.After aperture 10 is set,
It can be convenient for testing the internal strain of hemispherical Shell 1, test transmission line can be transferred to outside from aperture 10.
Embodiment 1
The hemispherical Shell 1 of design is having a size of outer diameter D 120mm, internal diameter d 67mm.Select the polyurethane cushion of Poisson's ratio very little
4, since planar materials can not sprawl into spherical shape, 12 equal parts can be cut into according to the loading area of design, it is uniform for being approximately considered
Load.Pedestal 5 is installed, bottom plate 6 is placed on pedestal 5, is then leveled bottom plate 6 by adjusting screw 9, applying is more than test
The load of load compresses bottom plate 6, then locks each nut.
1 surface of hemispherical Shell is used into alcohol washes, to form preferable contrast, using white paint jet background, then using black
Paint sends spot forth, keeps speckle point in the same size, is evenly distributed.Strain paste position delimited using coordinatometer, in symmetric position cloth
Hoop strain meter 2 is set, in surface mount acoustic emission probe 3.
The camera head of three-dimensional speckle strain measurement system is leveled, double camera is symmetrically arranged, and test zone is in phase
Region as big as possible is accounted in machine while guaranteeing the depth of field of test zone again, and camera inside and outside parameter is marked using scaling board
It is fixed.The displacement of acquisition, strain information can be used for the inspection of numerical simulation result.Fig. 5 is that resistance-strain built-in testing obtains in embodiment
The strain arrived, two side strains essentially coincide, it is seen that test tool ensure that the symmetry of load, and Fig. 6 is speckle institute in embodiment
Survey the horizontal direction displacement field in load, left and right almost symmetry.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that those skilled in the art
Member can be designed that a lot of other modification and implementations, these modifications and implementations will fall in principle disclosed in the present application
Within scope and spirit.
Claims (9)
1. a kind of high polymer is bonded explosive test method, which is characterized in that test specimen is hemispherical Shell;Test procedure includes:
The hemispherical Shell is horizontally arranged by step a. in the downward mode of opening direction, is arranged in hemispherical Shell outer surface test position
Foil gauge sets up three-dimensional speckle strain measurement system;
Step b. applies load to hemispherical Shell outer surface by Material Testing Machine, passes through foil gauge and three-dimensional speckle strain measurement system
System acquisition calculates hemisphere shell sape variable displacement and strain;
Step c. is loaded into destruction to hemispherical Shell by Material Testing Machine, acquires breaking load and strain data.
2. high polymer according to claim 1 is bonded explosive test method, which is characterized in that after completing step c, in replacement
Outer diameter size and/or the different hemispherical Shell test specimen of ratio re-start step a-c test.
3. high polymer according to claim 1 is bonded explosive test method, which is characterized in that the step b further includes setting
Acoustic emission detection system is set, the acoustic emission probe of the acoustic emission detection system is pasted on hemispherical Shell outer surface.
4. high polymer according to claim 1 is bonded explosive test method, which is characterized in that the foil gauge at least one
Right, each pair of foil gauge is symmetrically arranged in hemispherical Shell outer surface two sides.
5. high polymer according to claim 1 is bonded explosive test method, which is characterized in that the step a further include:
The load position of hemispherical Shell outer surface covers bed course, and the surface of hemispherical Shell test position is used alcohol washes, with white paint half
Spherical shell test position jet background, then speckle point that is in the same size using pitch-dark spraying, being evenly distributed.
6. high polymer according to claim 5 is bonded explosive test method, which is characterized in that the bed course is that polyurethane is more
Hole bed course.
7. high polymer according to claim 1 is bonded explosive test method, which is characterized in that the hemispherical Shell is equipped with ditch
Slot and aperture.
8. a kind of high polymer for any one of claim 1-7 is bonded explosive test tooling, which is characterized in that the bottom of including
Seat, bottom plate and load spherical shell, the bottom plate are fixedly connected on pedestal by adjusting screw, the load spherical shell and the hemisphere
Shell phase adaptation, the load spherical shell are equipped with aligning block.
9. high polymer according to claim 8 is bonded explosive test tooling, which is characterized in that in the middle part of the bottom plate and base plate
It is equipped with aperture.
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Cited By (2)
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CN109916952A (en) * | 2019-04-12 | 2019-06-21 | 中国工程物理研究院化工材料研究所 | The surface convection transfer rate measuring system and measurement method of georama configuration |
CN110232241A (en) * | 2019-06-12 | 2019-09-13 | 西安近代化学研究所 | A kind of hemispherical castexplosive casting process emulation mode |
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