CN106644773A - Impact performance testing device for materials - Google Patents
Impact performance testing device for materials Download PDFInfo
- Publication number
- CN106644773A CN106644773A CN201710010679.6A CN201710010679A CN106644773A CN 106644773 A CN106644773 A CN 106644773A CN 201710010679 A CN201710010679 A CN 201710010679A CN 106644773 A CN106644773 A CN 106644773A
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- CN
- China
- Prior art keywords
- clamping
- sample
- impulsive force
- lower wall
- impact
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
-
- 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
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the field of mechanical performance detection of materials, and discloses an impact performance testing device for materials. The device comprises a loading part (1) and a detecting part (200) cooperating with the loading part (1), wherein the loading part (1) is used for providing impact force; the detecting part (200) comprises a gripping component (30) used for bearing impact force and gripping a specimen (S), and a sensor (7) used for detecting the force on the specimen (S); the gripping component (30) is arranged to perform a pull-type impact load on the specimen (S) after bearing the impact of the loading part (1); the specimen (S) is a fatigue specimen with a fit interface. The device disclosed by the invention can perform tensile impact performance test on the standard part of the fatigue specimen, and is simple in structure and convenient to use.
Description
Technical field
The present invention relates to material mechanical performance testing field, in particular it relates to a kind of impact property test device of material.
Background technology
At present, during the military service of parts, its military service load may be of all kinds.When in the Service Environment of parts
When there is fatigue-impact reciprocation load, then need to test parts resisting fatigue-interactive performance of impact to comment
The reasonability of valency design.
In prior art, for the testing experiment of Impact Properties of Materials, mainly including following two：One kind is to impact tough
Degree test, for example, metal Charpy-type test.Using the V-arrangement or U-shaped breach of freely-supported beam type as impact examination in above-mentioned test
Sample, shock loading is produced by pendulum.When sufficiently large impact force action is in the breach back side, when making sample fracture, rushed according to pendulum
Energy loss before and after hitting, acquisition makes sample that the energy of impact fracture, referred to as impact toughness to occur.Another kind is, test material
(10 under high strain-rate2/ s～104/ s) dynamic stress-strain curve, such as Hopkinson bars test, the method for testing is main
It is the impulsive force produced using high quick-fried or bullet, by reinforcing butt sample is hit, due to the restriction of experimental condition, such test dress
It is the general very little of sample put, very short.
It can be seen that, the testing experiment of existing impact property is respectively provided with specific requirement to the shape and size of sample.It is same
Individual sample is difficult to the test of the fatigue-shock loading reciprocation performance of material.For for the circle of fatigue property test
Rod sample or rectangular specimen, it is impossible to directly impact test is carried out again by existing experimental rig, sample, process need to be remake
It is complicated.
The content of the invention
It is an object of the invention to provide a kind of impact property test device of material, the device can with docking port agree with it is tired
Labor sample carries out tension impact performance test, and then mechanics of the convenient research sample under " fatigue-shock loading reciprocation "
Performance.
To achieve these goals, the invention provides a kind of impact property test device of material, including：Loading unit and
The test section coordinated with loading unit.Loading unit is used to provide impulsive force, and test section is included for power and the clamping sample of withstanding shocks
Clamp assemblies, and for detecting the sensor of the power on sample.Clamp assemblies are arranged to after the impact of loading unit is born,
Pull-type Impulsive load is carried out to sample；The fatigue testing specimen that sample agrees with for interface.
Preferably, test section includes transmitting assembly, and the transmitting assembly is used to bear the impact of loading unit, and impulsive force is passed
It is delivered to sample holder component.
Preferably, transmitting assembly is included for accepting head with the impulsive force of loading unit directly contact, and for by impulsive force
Force transmission element of the load transmission that undertaking head bears to sample holder component.
Preferably, the face contacted with loading unit that impulsive force accepts head is outwardly spherical crown surface.
Preferably, sample holder component includes the upper disk of clamping and clamping lower wall, and disk and clamping lower wall are arranged in the clamping
Can be moved away from after the impulsive force for receiving transmitting assembly transmission.
Preferably, hole and/or open slot are provided with disk in clamping, one end of force transmission element is connected to impulsive force and accepts head,
The other end is abutted through the hole on the upper disk of clamping and/or open slot with clamping lower wall.
Preferably, sample holder component includes support bar, and the upper end of the support bar is threadedly coupled with the upper disk of clamping, support bar
Lower end with clamping lower wall fixed guide portion cooperation, clamping lower wall is moved down along support bar.
Preferably, sample holder component includes the clamping part for clamping sample.
Preferably, clamping part includes：It is connected to clamping to go up the first chuck at disk center and be correspondingly arranged with the first chuck
The second chuck for being connected to clamping lower wall center.
Preferably, the two ends of sensor are connected to the bottom of the second chuck and the top of clamping lower wall.
Preferably, foil gauge is posted on sample.
Preferably, loading unit is to wind up a deal.
By above-mentioned technical proposal, the shock loading and energy that loading unit is produced is loaded into test section, and test section bears punching
After hitting load, pull-type Impulsive load is carried out to sample, the stress on the sample of sensor detection afterwards.Thus, said apparatus can be with
The detection of tension impact performance is carried out to sample.The fatigue testing specimen that interface agrees with refers to that sample has can both connect impact property
Test device, can connect the interface of fatigue tester again.To connect above-mentioned interface, the impact property test device of the present invention
The sample holder structure of clamp assemblies employs the structure with the sample holder structure identical in fatigue tester, therefore, together
One sample, can be carrying out fatigue behaviour detection, i.e. can be to same after tension impact performance has been detected on fatigue machine
Sample carries out fatigue-shock loading reciprocation, to carry out complex loading in the case of material mechanical property research.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural representation of the impact property test device of the material of one embodiment of the present invention；
Fig. 2 is the structural representation of the transmitting assembly of one embodiment of the present invention；
Fig. 3 is the structural representation of the sample holder component of one embodiment of the present invention；
Fig. 4 is the building block explosive view of Fig. 1；
Fig. 5 is the structural representation of the impact property test device of the material of another embodiment of the invention.
Description of reference numerals
The impulsive force of 1 loading unit 2 accepts head
The upper disk of the clamping of 3 force transmission element 4
The clamping part of 5 support bar 6
7 sensor 8 clamps lower wall
The transmitting assembly of 200 test section 20
The chuck of 30 clamp assemblies 61 first
The guide portion of 62 second chuck 81
S samples
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
The invention provides a kind of impact property test device of material, the device includes：Loading unit 1 and with loading unit 1
The test section 200 of cooperation.Loading unit 1 is used to provide impulsive force, and test section 200 is included for power and the clamping sample S of withstanding shocks
Clamp assemblies 30, and for detecting the sensor 7 of the power on sample S.Wherein, clamp assemblies 30 are arranged to bearing loading
Pull-type Impulsive load, the fatigue testing specimen that sample S agrees with for interface are carried out to sample S after the impact in portion 1.The fatigue examination that interface agrees with
Sample refers to that sample has not only can have been connected impact property test device but also can connect the interface of fatigue tester.In such case
Under, test section 200 is born after the shock loading of the loading of loading unit 1, and pull-type Impulsive load is carried out to sample S, and sensor 7 can be examined
The stress curve acted on sample S is measured, and then the tension impact performance of material can be evaluated.Further, due to this
The sample holder structure of the clamp assemblies 30 of bright impact property test device is employed and the sample holder in fatigue tester
Structure identical structure, therefore, the test device of the present invention can carry out fatigue-shock loading reciprocation to same sample and survey
Examination, the comprehensive mechanical property of material in the case of research fatigue-impact complex loading.
As shown in Figures 2 and 3, test section 200 includes：Transmitting assembly 20 and clamp assemblies 30.Transmitting assembly 20 is used to hold
Impacted by loading unit 1, and impulsive force is delivered to into clamp assemblies 30.Further, transmitting assembly 20 includes：Impulsive force is accepted
2 and force transmission element 3.Impulsive force accept 2 with the directly contact of loading unit 1.Force transmission element 3 is used to bear impulsive force undertaking 2
Load transmission on clamp assemblies 30.In this case, the impulsive force that loading unit 1 is provided first is applied to transmitting assembly 20
On, then the indirectly-acting of Jing transmitting assemblies 20 is to clamp assemblies 30.As such, it is possible to change the concrete active position of impulsive force, pass through
The cooperation of transmitting assembly 20 and clamp assemblies 30, the impact that will act on sample S is arranged to tension impact.
For the accuracy for ensureing to coordinate between loading unit 1 and impulsive force undertaking 2, as shown in figure 1, impulsive force accepts head
2 face contacted with loading unit 1 is outwardly spherical crown surface.In this case, no matter in the loading procedure of loading unit 1 whether
Biasing, shock loading can act on the central authorities of impulsive force undertaking 2.Preferably, to wind up a deal, it imitates impulsive force model to loading unit 1
Enclose for 6t.
Clamp assemblies 30 include the upper disk 4 of clamping and clamping lower wall 8.Disk 4 and clamping lower wall 8 are arranged to receiving in clamping
It is moved away from after the impulsive force of the transmission of transmitting assembly 20.Specifically, transmitting assembly 20 is arranged on the top of the upper disk 4 of clamping, transmission
The spherical crown of the impulsive force undertaking 2 of component 20 faces outwardly setting, with corresponding with loading unit 1.In the spherical crown of impulsive force undertaking 2
The back side in face, is fixedly connected with multiple force transmission elements 3, it is preferable that force transmission element 3 is three rod-like elements.Impulsive force undertaking 2 is by passing
Impulsive force is delivered to clamping lower wall 8 by power part 3, is moved relative to disk 4 in the clamping of corresponding setting after the clamping stress of lower wall 8
It is dynamic, and then sample is stretched.
Further, hole and/or open slot are provided with disk 4 in clamping, one end of force transmission element 3 is connected to impulsive force undertaking
2, the other end is abutted through the hole on the upper disk 4 of clamping and/or open slot with lower wall 8 is clamped.Preferably, impulsive force undertaking 2
It is arranged to discoid, its upper surface is outwardly spherical crown surface, lower surface is plane.The radius of impulsive force undertaking 2 is less than
Or equal to the radius of the upper disk 4 of clamping.The length of the force transmission element 3 of the lower surface of impulsive force undertaking 2 is connected to, more than the upper disk of clamping
The distance between 4 and clamping lower wall 8.Thus, after impulsive force accepts 2 stress, force transmission element 3 can press against clamping lower wall 8 to
Lower movement, makes impulsive force undertaking 2 be unlikely to withstand on the upper disk 4 of clamping.
In addition, clamp assemblies 30 include support bar 5, the upper end of support bar 5 is threadedly coupled with the upper disk 4 of clamping, support bar 5
Lower end coordinates with the fixed guide portion 81 of clamping lower wall 8 so that clamping lower wall 8 can be moved down along support bar 5.Specifically, prop up
Strut 5 is three, and its length is also greater than the distance between the upper disk 4 of clamping and clamping lower wall 8.Thus, it is possible to ensure to clamp lower wall 8
It is hanging during work, and when load is withstood shocks with certain displacement and oscillation space, the oscillation space ensure that under clamping
Disk 8 is subject to after impulsive force, with a certain distance and work top between when moving down.
In order to clamp different samples, for example, cylinder sample and rectangle CT samples (compact tensile specimen),
As shown in figure 1, the clamp assemblies 30 of the present invention include the clamping part 6 for clamping sample S.Clamping part 6 is arranged to and fatigue examination
The sample holder structure identical structure tested in machine.Specifically, the mode that cylindrical sample is threaded connection is arranged on folder
In holding portion 6, and the sample of rectangle can be fixed by hook-shaped clamping part.In addition, in order to ensure the uniform steady of sample stress
Fixed, clamping part 6 is arranged to include the first chuck 61 and the second chuck 62.First chuck 61 is connected to the upper center of disk 4 of clamping, the
Two chucks 62 are correspondingly arranged with the first chuck 61, and are connected to clamping lower wall 8 center.The two ends of sensor 7 are connected to
The bottom of the second chuck 62 and the top of clamping lower wall 8.So, when the first chuck 61 and the second 62 tensile sample of chuck, from
Sensor 7 can detect the tension impact force curve on sample.Preferably, in order to grind to the stress-strain diagram of material
Study carefully, can be posting foil gauge on sample S.
The present invention a specific embodiment in, as shown in figure 4, the shape of test device, size and part it
Between annexation can arrange in the following way：
Impulsive force undertaking 2 is set to external diameter for R1=240mm, is highly H1The disk of=40mm.Head is accepted in impulsive force
2 following table radius surface is R1On the circumference of '=180mm, every 120 ° a screwed hole, the spiral shell with the upper end of force transmission element 3 are processed
Line is docked.Disk 4 and clamping lower wall 8 are all provided with being set to external diameter for R in clamping2=R3=300mm, thickness is H2=H3The circle of=20mm
Disk.The radius of disk 4 is R in clamping2On the circumference of '=180mm, a through hole is machined with every 120 °, so that force transmission element 3 is worn
Cross.The middle position of the lower surface of disk 4 in clamping, is machined with the structure coordinated with clamping part 6.The following table of disk 4 in clamping
The radius R in face2On the circumference of "=250mm, a screwed hole is machined with every 120 °, is matched somebody with somebody with the screw thread of the upper end of support bar 5
Close.The lower end of support bar 5 passes the periphery R of clamping lower wall 83Open slot on '=300mm.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, various letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
Claims (12)
1. the impact property test device of a kind of material, it is characterised in that described device include loading unit (1) and with the loading
The test section (200) that portion (1) coordinates, for providing impulsive force, the test section (200) is included for holding the loading unit (1)
The power that is hit and the clamp assemblies (30) and the sensor (7) for detecting the power on the sample (S) of clamping sample (S),
The clamp assemblies (30) are arranged to after the impact for bearing the loading unit (1), pull-type impact is carried out to the sample (S) and is added
Carry；The fatigue testing specimen that the sample (S) is agreed with for interface.
2. device according to claim 1, it is characterised in that the test section (200) is described including transmitting assembly (20)
Transmitting assembly (20) is for bearing the impact of the loading unit (1) and impulsive force is delivered to into the clamp assemblies (30).
3. device according to claim 2, it is characterised in that the transmitting assembly (20) include for the loading unit
(1) impulsive force of directly contact accepts head (2), and for the impulsive force to be accepted into head (2) load transmission born to described
The force transmission element (3) of clamp assemblies (30).
4. device according to claim 3, it is characterised in that the impulsive force accept head (2) with the loading unit (1)
The face of contact is outwardly spherical crown surface.
5. the device according to claim 3 or 4, it is characterised in that the clamp assemblies (30) including the upper disk (4) of clamping and
Clamping lower wall (8), disk (4) and clamping lower wall (8) in the clamping is arranged to receiving transmitting assembly (20) transmission
It is moved away from after impulsive force.
6. device according to claim 5, it is characterised in that be provided with hole and/or opening on disk (4) in the clamping
Groove, one end of the force transmission element (3) is connected to the impulsive force and accepts head (2), and the other end is through on disk (4) in the clamping
Hole and/or open slot are abutted with clamping lower wall (8).
7. device according to claim 5, it is characterised in that the clamp assemblies (30) include support bar (5), described
The upper end of strut (5) is fixedly connected with disk (4) in the clamping, the lower end of the support bar (5) and clamping lower wall (8)
Fixed guide portion (81) coordinates, and clamping lower wall (8) is moved down along the support bar (5).
8. device according to claim 5, it is characterised in that the clamp assemblies (30) are included for clamping the sample
(S) clamping part (6).
9. device according to claim 8, it is characterised in that the clamping part (6) is including being connected to disk in the clamping
(4) in first chuck (61) of center and clamping lower wall (8) described with being connected to of being correspondingly arranged of first chuck (61)
The second chuck (62) at the heart.
10. device according to claim 9, it is characterised in that the two ends of the sensor (7) are connected to described
The bottom of two chucks (62) and the top of the clamping lower wall (8).
11. devices according to claim 1, it is characterised in that post foil gauge on the sample (S).
12. devices according to claim 1, it is characterised in that the loading unit (1) is to wind up a deal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010679.6A CN106644773A (en) | 2017-01-06 | 2017-01-06 | Impact performance testing device for materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010679.6A CN106644773A (en) | 2017-01-06 | 2017-01-06 | Impact performance testing device for materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106644773A true CN106644773A (en) | 2017-05-10 |
Family
ID=58844357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710010679.6A Pending CN106644773A (en) | 2017-01-06 | 2017-01-06 | Impact performance testing device for materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106644773A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253933A (en) * | 2018-11-02 | 2019-01-22 | 吉林大学 | Test specimen apparatus for impact testing and test method are bonded in a kind of full service temperature section |
| CN112683698A (en) * | 2020-12-21 | 2021-04-20 | 西安交通大学 | Tensile impact test stand with medium strain rate for material |
| CN114705470A (en) * | 2022-06-07 | 2022-07-05 | 中国飞机强度研究所 | Impact loading system and method for aircraft impact strength resistance test |
| CN114778057A (en) * | 2022-06-20 | 2022-07-22 | 中国飞机强度研究所 | Impact test tool and method suitable for airplane component |
| CN115046831A (en) * | 2022-07-20 | 2022-09-13 | 中钢新型材料股份有限公司 | Graphite axial fatigue test method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0231323A1 (en) * | 1985-08-06 | 1987-08-12 | The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and | Tensile impulse tester |
| US5677494A (en) * | 1996-03-05 | 1997-10-14 | Mcdonnell Douglas Corporation | Method for high strain-rate testing of specimens |
| CN102279127A (en) * | 2011-07-05 | 2011-12-14 | 湖南大学 | Conversion device capable of realizing drop hammer tensile impact test |
| CN105928805A (en) * | 2016-06-27 | 2016-09-07 | 西南交通大学 | Pressing type impact property testing device for material |
| CN205749117U (en) * | 2016-01-04 | 2016-11-30 | 宋璐 | A kind of bushing type tensile impact experimental provision |
-
2017
- 2017-01-06 CN CN201710010679.6A patent/CN106644773A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0231323A1 (en) * | 1985-08-06 | 1987-08-12 | The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and | Tensile impulse tester |
| US5677494A (en) * | 1996-03-05 | 1997-10-14 | Mcdonnell Douglas Corporation | Method for high strain-rate testing of specimens |
| CN102279127A (en) * | 2011-07-05 | 2011-12-14 | 湖南大学 | Conversion device capable of realizing drop hammer tensile impact test |
| CN205749117U (en) * | 2016-01-04 | 2016-11-30 | 宋璐 | A kind of bushing type tensile impact experimental provision |
| CN105928805A (en) * | 2016-06-27 | 2016-09-07 | 西南交通大学 | Pressing type impact property testing device for material |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253933A (en) * | 2018-11-02 | 2019-01-22 | 吉林大学 | Test specimen apparatus for impact testing and test method are bonded in a kind of full service temperature section |
| CN112683698A (en) * | 2020-12-21 | 2021-04-20 | 西安交通大学 | Tensile impact test stand with medium strain rate for material |
| CN114705470A (en) * | 2022-06-07 | 2022-07-05 | 中国飞机强度研究所 | Impact loading system and method for aircraft impact strength resistance test |
| CN114778057A (en) * | 2022-06-20 | 2022-07-22 | 中国飞机强度研究所 | Impact test tool and method suitable for airplane component |
| CN114778057B (en) * | 2022-06-20 | 2022-09-02 | 中国飞机强度研究所 | Impact test tool and method suitable for airplane component |
| CN115046831A (en) * | 2022-07-20 | 2022-09-13 | 中钢新型材料股份有限公司 | Graphite axial fatigue test method |
| CN115046831B (en) * | 2022-07-20 | 2023-08-29 | 赛迈科先进材料股份有限公司 | Method for testing axial fatigue of graphite |
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