CN107631945A - A kind of small mass force hammer multi-angle impact tester - Google Patents
A kind of small mass force hammer multi-angle impact tester Download PDFInfo
- Publication number
- CN107631945A CN107631945A CN201710670646.4A CN201710670646A CN107631945A CN 107631945 A CN107631945 A CN 107631945A CN 201710670646 A CN201710670646 A CN 201710670646A CN 107631945 A CN107631945 A CN 107631945A
- Authority
- CN
- China
- Prior art keywords
- jump bit
- rocking arm
- steel wire
- testpieces
- small mass
- Prior art date
- 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.)
- Granted
Links
- 238000005259 measurement Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 44
- 239000010959 steel Substances 0.000 claims description 44
- 238000012360 testing method Methods 0.000 claims description 14
- 238000002474 experimental method Methods 0.000 claims description 11
- 238000009863 impact test Methods 0.000 claims description 9
- 239000011888 foil Substances 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of small mass force hammer multi-angle impact tester, including：Jump bit component (20), wrench assembly (21), support component (22), testpieces support component (23).Testpieces is placed in testpieces support component, and jump bit component and wrench assembly are connected with support component.Jump bit 11 in impact can approximation regard no constrained motion as, so as to preferably simulate true small mass objects dynamic impulsion problem.Compared with prior art, the present invention makes tup in impact process be approximately at free state, is not disturbed by other positions, and measurement result is more accurate.
Description
Technical field
The present invention relates to a kind of material impact testing machine, can simulate multi-direction impact of the small mass objects to material.
Background technology
Composite layer laminated structure is widely used in aeronautic structure, but very sensitive for shock loading, is very easy to
Fibrous fracture, layering and MATRIX CRACKING equivalent damage are produced, so as to substantially reduce the bearing capacity of structure, in aeronautic structure engineering
In, it is necessary to carry out the substantial amounts of composite construction load-carrying properties test job containing damage, thus need to carry out corresponding impact impedance
It can test or damage and be prefabricated.
For airframe, shock loading is generally divided into quasistatic impact and dynamic impulsion impact, and the former is mainly by matter
Measure larger instrument and fall and cause；The latter is mainly caused by the small mass objects such as rubble, hail.ASTM measurement standards D7136/
D7136M-05 defines the drop weight test method of a kind of composite impact, and sensor that can be with tup and between dropping hammer measures
Contact force, quasi-static big quality shock-testing is only applicable to, and the tup of quality very little must be used by simulating dynamic impulsion, text
Offer Olsson, R., " Mass Criterion for Wave Controlled Impact Response of Composite
Plates,”Composites Part A:Applied Science and Manufacturing,Vol.31,No.8,
The difference of big quality and the impact of small mass objects is elaborated in Aug.2000, pp.879-887., the latter requires that jump bit quality is small
It is hit in plate 0.2 times of region, therefore jump bit should be approximately at free state in impact process, not connected by other
The interference of part.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of measurement result is reliable
Small mass force hammer multi-angle impact tester.
The purpose of the present invention can be achieved through the following technical solutions：A kind of small mass force hammer Multi-angle impact experiment
Machine, it is characterised in that including：
Jump bit component, including rocking arm, steel wire and jump bit, described steel wire one end are fixed on rocking arm, and the other end connects
Jump bit is connect, when impact test starts, steel wire drives jump bit to be fixed on rocking arm, and is rotated with rocking arm, and rocking arm falls and stopped
Only after motion, one end of steel wire connection jump bit departs from from rocking arm, and jump bit continues to move bump test part, and simulation jump bit is certainly
By impact test part；
Wrench assembly, drive jump bit component to rotate, jump bit is obtained impact energy, and discharge jump bit in an experiment
Component；
Support component, it is made and fixes jump bit component and wrench assembly；
Testpieces support component, support testpieces, and the angle of Adjustment Tests part.
Described jump bit component also includes spring fastening, and the spring fastening is fixed in support component, and spring fastening
Spring, and spring end and equipment bay contact are inside installed, for rocking arm through spring middle part, end passes through connecting rod and spring
Bearing is connected, and front end is connected provided with neck with described steel wire, rotary support is provided among rocking arm, steel wire one end is arranged on institute
State on rotary support, the other end is stuck in the neck.
Described neck semicircular in shape shape, and match with steel wire diameter, in rocking arm rotation process, steel wire is stuck in neck
Interior, after the interrupted stop motion of rocking arm, steel wire departs from from neck, and jump bit continues to be in proximate freedom shape in the movement direction
State, but involving due to steel wire, will not fly out.Due to steel wire rigidity very little, and it can be rotated around rotary support, jump bit is oblique
No restrained condition can be approximately at during impact test part.
Accelerometer and foil gauge are additionally provided with described jump bit, strain gauge adhesion is in jump bit surface, accelerometer
Installed in jump bit end.
U-shaped button is additionally provided with described rocking arm, is connected rocking arm with wrench assembly by U-shaped button.U-shaped button is arranged on rocking arm
Middle part, when wrench assembly is rotated by U-shaped cingulum motion rocker arm, spring will deform upon, and the elastic deformation of spring will make rocking arm
Move to testpieces and hit with hitting bearing.
Wrench assembly includes spanner, release, connecting rod, groove, and connecting rod is connected on spanner through release, spanner
It is connected with spring fastening, groove is arranged on release one end, before experiment, the U-shaped button on rocking arm is connected on groove, works as spanner
During rotation, release and rocking arm rotation are driven, so that spring deforms upon, storage energy.
Described support component includes equipment bay, hits bearing, photoelectric velocity measurement device bearing and photoelectric velocity measurement device, hits branch
Seat and photoelectric velocity measurement device bearing are fixed on equipment bay, and photoelectric velocity measurement device is arranged on photoelectric velocity measurement device bearing, and rocking arm hits
Bearing stop motion is hit, the signal of change jump bit stroke speed collected when photoelectric sensor hits according to rocking arm, is obtained
Impact energy.
Described testpieces support component includes testpieces fixture and testpieces supporting plate, and testpieces fixture consolidates testpieces
It is scheduled in testpieces supporting plate.
The course of work is as follows：
According to the angle of experiment angle of attack Adjustment Tests part supporting plate, testpieces is placed in testpieces supporting plate,
And with testpieces fixture fixation test part.U-shaped button is allowed to be connected on the groove of release, steel wire is placed in rocking arm neck, is pulled
Spanner rotation drives release, rocking arm and steel wire rotation, can make spring that elastic deformation, storage energy occur.It is certain when reaching
During angle, release is pulled, U-shaped button can depart from release, and under the elastic reactance of spring, rocking arm front end neck promotes steel
The junction of silk and jump bit, jump bit is set to accelerate to fall, when rocking arm passes through photoelectric sensor, photoelectric sensor can recorded
Signal, so as to calculate the impact velocity of rocking arm, and then calculate impact energy.When rocking arm, which strikes, hits bearing, rocking arm
Stop motion, steel wire can depart from neck, continue to move with jump bit, so that jump bit strikes testpieces.Due to steel wire
It is relatively thin, and the presence of rotary support, jump bit in Multi-angle impact can approximation regard no constrained motion as, so as to preferable
Simulate the dynamic impulsion problem of small mass objects.By impacting the signal of brief acceleration meter and foil gauge, can be connect in the hope of impact
Touch.
Compared with prior art, the present invention has advantages below：
(1) impact moves forward and backward controllable, measures its response using the sensor on jump bit and obtains Contact -impact power.
(2) tup is approximately at free state in impact process, is not disturbed by other positions, and measurement result is more accurate.
(3) when oblique impact is tested, due to steel wire is relatively thin and rocking arm on rotary support presence, ensure that jump bit in oblique impact
No restrained condition is approximately at during hitting.
(4) impact velocity and impact energy are controlled by adjusting the spanner anglec of rotation, ensure that the repeatability of experiment, surveyed
It is more reliable to measure result.
(5) rocking arm front end neck promotes steel wire root, accelerates jump bit.So as to ensure the steel under great role power
Silk does not bend and fractureed.
Brief description of the drawings
Fig. 1 is equipment schematic diagram before impact；
Fig. 2 is rocking arm close-up schematic view；
Fig. 3 is equipment schematic diagram after impact；
Fig. 4 is jump bit enlarged diagram after impact；
In figure, 1 is testpieces fixture, and 2 be testpieces supporting plate, and 3 be equipment bay, and 4 is hit bearing, and 5 be photoelectric measuring
Fast device bearing, 6 be photoelectric velocity measurement device, and 7 be spring fastening, and 8 be rocking arm, and 9 be rotary support, and 10 be steel wire, and 11 be jump bit, 12
It is spanner for accelerometer, 13,14 be release, and 15 be connecting rod, and 16 be U-shaped button, and 17 be spring, and 18 be neck, and 19 be to answer
Become piece, 20 be jump bit component, and 21 be wrench assembly, and 22 be support component, and 23 be testpieces support component, and 24 be testpieces,
25 be groove.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As described in Fig. 1-4, a kind of small mass force hammer multi-angle impact tester, including：
1. jump bit component 20, including spring fastening 7, rocking arm 8, rotary support 9, steel wire 10, jump bit 11, accelerometer
12, U-shaped button 16, spring 17, neck 18, foil gauge 19, described one end of steel wire 10 is fixed on rocking arm 8, other end connection punching
Hammer 11, when impact test starts, steel wire 10 drives jump bit 11 to be fixed on rocking arm 8, and is rotated with rocking arm 8, and rocking arm 8 falls
And after stop motion, one end that steel wire 10 connects jump bit 11 departs from from rocking arm 8, jump bit 11 continues to move bump test part
24, simulate the free impact test part 24 of jump bit 11；Spring fastening 7 is fixed in support component 22, and is installed in spring fastening 7
There is spring 17, and spring end and equipment bay 3 contact, and for rocking arm 8 through the middle part of spring 17, end passes through connecting rod and spring
Bearing 7 is connected, and front end is connected provided with neck 18 with described steel wire 10, and rotary support 9, steel wire 10 1 are provided among rocking arm 8
End is arranged on the rotary support 9, and the other end is stuck in the neck 18.The described semicircular in shape shape of neck 18, and and steel
10 diameters of silk match, and in the rotation process of rocking arm 8, steel wire 10 is stuck in neck 18, after 8 interrupted stop motion of rocking arm, steel
Silk 10 departs from from neck 18, drives jump bit 11 to continue to move.Due to steel wire rigidity very little, and can be rotated around rotary support,
Jump bit can be approximately at no restrained condition in oblique impact test part.
Foil gauge 19 is pasted onto the surface of jump bit 11, and accelerometer 12 is arranged on the end of jump bit 11.
U-shaped button 16 is additionally provided with described rocking arm 8, is connected rocking arm 8 with wrench assembly 21 by U-shaped button 16.U-shaped button is pacified
In the middle part of rocking arm, when wrench assembly is rotated by U-shaped cingulum motion rocker arm, spring will deform upon, the elastic deformation of spring
Rocking arm will be made to move to testpieces and be hit with hitting bearing.
2. wrench assembly 21, driving jump bit component 20 to rotate, jump bit 11 is set to obtain impact energy, and release in an experiment
Put jump bit component 20；Wrench assembly 21 includes spanner 13, and release 14, connecting rod 15, groove 25, connecting rod 15, which passes through, to be discharged
Device 14 is connected on spanner 13, and spanner 13 is connected with spring fastening 7, and groove 25 is arranged on the one end of release 14, before experiment, will be shaken
U-shaped button 16 on arm 8 is connected on groove 25, when spanner 13 rotates, drives release 14 and rocking arm 8 to rotate, so that bullet
Spring 17 deforms upon, storage energy.
3. support component 22, it is made and fixes jump bit component 20 and wrench assembly 21；Described support component 22 includes
Equipment bay 3, bearing 4, photoelectric velocity measurement device bearing 5 and photoelectric velocity measurement device 6 are hit, hit bearing 4 and photoelectric velocity measurement device bearing 5 is solid
It is scheduled on equipment bay 3, photoelectric velocity measurement device 6 is arranged on photoelectric velocity measurement device bearing 5, and rocking arm 8 hits bearing 4 and stops fortune
It is dynamic, the stroke speed of signal of change jump bit 11 that photoelectric sensor 6 collects when being hit according to rocking arm 8, obtain impact energy.
4. testpieces support component 23, described testpieces support component 23 includes testpieces fixture 1 and testpieces supports
Testpieces 24 is fixed in testpieces supporting plate 2 by plate 2, testpieces fixture 1, and the angle of Adjustment Tests part 24.
This equipment course of work is as follows：First according to the angle of experiment angle of attack Adjustment Tests part supporting plate 2, and allow examination
Test part 24 to be placed in testpieces supporting plate 2, with the fixation test part 24 of testpieces fixture 1.Steel wire 10 will be placed in neck 18,
Allow U-shaped button 16 to be connected on the groove 25 of release 14, pull spanner 13 to drive release 14 and rocking arm 8 to rise, while spring
17 deformations, storage energy.When reaching certain angle, release 14 is discharged, U-shaped button 16 can depart from release 14, in spring 17
Elastic reactance under, rocking arm 8 drive steel wire 10, jump bit 11 accelerate fall, when rocking arm 8 by photoelectric sensor 6 when, light
Electric transducer can recorded signal, so as to calculate the impact velocity of rocking arm 8.When rocking arm 8, which strikes, hits bearing 4, rocking arm 8 stops
Only move, steel wire 10, which can depart from groove 18, to be continued to move, so as to which jump bit 11 strikes testpieces 24.Because steel wire 10 is relatively thin,
And the presence of rotary support 9, jump bit 11 in impact can approximation regard no constrained motion as, it is true so as to preferably simulate
Small mass objects dynamic impulsion problem., can be in the hope of Contact -impact by impacting the signal of brief acceleration meter 12 and foil gauge 19
Power.
Claims (8)
- A kind of 1. small mass force hammer multi-angle impact tester, it is characterised in that including：Jump bit component (20), including rocking arm (8), steel wire (10) and jump bit (11), described steel wire (10) one end are fixed on On rocking arm (8), other end connection jump bit (11), when impact test starts, steel wire (10) drives jump bit (11) to be fixed on and shaken On arm (8), and rotated with rocking arm (8), rocking arm (8) falls and after stop motion, one end of steel wire (10) connection jump bit (11) Depart from from rocking arm (8), jump bit (11) continues to move bump test part (24), simulates jump bit (11) free impact test part (24)；Wrench assembly (21), drive jump bit component (20) to rotate, jump bit (11) is obtained impact energy, and release in an experiment Put jump bit component (20)；Support component (22), it is made and fixes jump bit component (20) and wrench assembly (21)；Testpieces support component (23), support testpieces (24), and the angle of Adjustment Tests part (24).
- A kind of 2. small mass force hammer multi-angle impact tester according to claim 1, it is characterised in that described impact Hammer component (20) also includes spring fastening (7), and the spring fastening (7) is fixed in support component (22), and in spring fastening (7) Spring (17) is installed, rocking arm (8) is connected through spring (17) middle part, end by connecting rod and spring fastening (7), and front end is set There is neck (18) to be connected with described steel wire (10), rotary support (9), the installation of steel wire (10) one end are provided among rocking arm (8) On the rotary support (9), the other end is stuck in the neck (18).
- A kind of 3. small mass force hammer multi-angle impact tester according to claim 2, it is characterised in that described neck (18) semicircular in shape shape, and match with steel wire (10) diameter, in rocking arm (8) rotation process, steel wire (10) is stuck in neck (18) in, after rocking arm (8) interrupted stop motion, steel wire (10) departs from from neck (18), and jump bit (11) continues moving Proximate freedom state, but involving due to steel wire (10) are on direction, will not be flown out.
- 4. a kind of small mass force hammer multi-angle impact tester according to claim 1 or 2 or 3, it is characterised in that described Jump bit (11) on be additionally provided with accelerometer (12) and foil gauge (19), foil gauge (19) is pasted onto jump bit (11) surface, Accelerometer (12) is arranged on jump bit (11) end.
- A kind of 5. small mass force hammer multi-angle impact tester according to claim 2, it is characterised in that described rocking arm (8) U-shaped button (16) is additionally provided with, is connected rocking arm (8) with wrench assembly (21) by U-shaped button (16).
- A kind of 6. small mass force hammer multi-angle impact tester according to claim 5, it is characterised in that wrench assembly (21) spanner (13) is included, release (14), connecting rod (15), groove (25), connecting rod (15) connects through release (14) On spanner (13), spanner (13) is connected with spring fastening (7), and groove (25) is arranged on release (14) one end, will before experiment U-shaped button (16) on rocking arm (8) is connected on groove (25), when spanner (13) rotates, drives release (14) and rocking arm (8) Rotation, so that spring (17) deforms upon, storage energy.
- A kind of 7. small mass force hammer multi-angle impact tester according to claim 1, it is characterised in that described support Component (22) includes equipment bay (3), hits bearing (4), photoelectric velocity measurement device bearing (5) and photoelectric velocity measurement device (6), hits bearing (4) it is fixed on photoelectric velocity measurement device bearing (5) on equipment bay (3), photoelectric velocity measurement device (6) is arranged on photoelectric velocity measurement device bearing (5) on, rocking arm (8) hits bearing (4) stop motion, the letter that photoelectric sensor (6) collects when being hit according to rocking arm (8) Number calculating jump bit (11) stroke speed, obtains impact energy.
- A kind of 8. small mass force hammer multi-angle impact tester according to claim 1, it is characterised in that described experiment Part support component (23) includes testpieces fixture (1) and testpieces supporting plate (2), and testpieces fixture (1) is solid by testpieces (24) It is scheduled in testpieces supporting plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670646.4A CN107631945B (en) | 2017-08-08 | 2017-08-08 | Small mass power hammer multi-angle impact testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670646.4A CN107631945B (en) | 2017-08-08 | 2017-08-08 | Small mass power hammer multi-angle impact testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107631945A true CN107631945A (en) | 2018-01-26 |
| CN107631945B CN107631945B (en) | 2020-06-19 |
Family
ID=61099186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710670646.4A Expired - Fee Related CN107631945B (en) | 2017-08-08 | 2017-08-08 | Small mass power hammer multi-angle impact testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107631945B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406316A (en) * | 2018-08-22 | 2019-03-01 | 芜湖市黄山松工业地坪新材料有限公司 | A kind of construction material processing impact resistance detection device |
| CN113188928A (en) * | 2021-04-26 | 2021-07-30 | 中国石油天然气股份有限公司 | Well cementation cement strikes mechanical properties tester and testing arrangement |
| CN115876613A (en) * | 2022-11-30 | 2023-03-31 | 浙江方泰汽车配件有限公司 | Impact test device for automobile control arm |
| CN115876613B (en) * | 2022-11-30 | 2024-07-05 | 浙江方泰汽车配件有限公司 | Impact test device for automobile control arm |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080105028A1 (en) * | 2006-11-03 | 2008-05-08 | Abke Timothy A | Methods and apparatus for measuring impact toughness of a tie rod end |
| US20080178655A1 (en) * | 2007-01-31 | 2008-07-31 | Honda Motor Co., Ltd. | Impact test apparatus |
| CN103728190A (en) * | 2013-12-30 | 2014-04-16 | 华侨大学 | Multi-angle drop-hammer impact testing device and test bench thereof |
| CN203824848U (en) * | 2014-04-15 | 2014-09-10 | 新疆大学 | Object impact tester |
| CN104048885A (en) * | 2014-06-25 | 2014-09-17 | 东北大学 | Pendulum bob type shearing-resistant impact testing machine and testing method thereof |
| CN104913990A (en) * | 2015-06-09 | 2015-09-16 | 上海交通大学 | Rocker arm type small mass impact testing machine |
| CN206248451U (en) * | 2016-12-13 | 2017-06-13 | 南京金陵检测工程有限公司 | Shock machine clamping device |
| EP3184986A1 (en) * | 2015-12-21 | 2017-06-28 | Zwick GmbH&Co. Kg | Charpy pendulum impact test |
-
2017
- 2017-08-08 CN CN201710670646.4A patent/CN107631945B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080105028A1 (en) * | 2006-11-03 | 2008-05-08 | Abke Timothy A | Methods and apparatus for measuring impact toughness of a tie rod end |
| US20080178655A1 (en) * | 2007-01-31 | 2008-07-31 | Honda Motor Co., Ltd. | Impact test apparatus |
| CN103728190A (en) * | 2013-12-30 | 2014-04-16 | 华侨大学 | Multi-angle drop-hammer impact testing device and test bench thereof |
| CN203824848U (en) * | 2014-04-15 | 2014-09-10 | 新疆大学 | Object impact tester |
| CN104048885A (en) * | 2014-06-25 | 2014-09-17 | 东北大学 | Pendulum bob type shearing-resistant impact testing machine and testing method thereof |
| CN104913990A (en) * | 2015-06-09 | 2015-09-16 | 上海交通大学 | Rocker arm type small mass impact testing machine |
| EP3184986A1 (en) * | 2015-12-21 | 2017-06-28 | Zwick GmbH&Co. Kg | Charpy pendulum impact test |
| CN206248451U (en) * | 2016-12-13 | 2017-06-13 | 南京金陵检测工程有限公司 | Shock machine clamping device |
Non-Patent Citations (2)
| Title |
|---|
| ROBIN OLSSON: ""Analytical model for delamination growth during small mass impact on plates"", 《INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES》 * |
| 曹翔 等: ""一种便携式落重冲击试验机的研制"", 《实验室研究与探索》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406316A (en) * | 2018-08-22 | 2019-03-01 | 芜湖市黄山松工业地坪新材料有限公司 | A kind of construction material processing impact resistance detection device |
| CN113188928A (en) * | 2021-04-26 | 2021-07-30 | 中国石油天然气股份有限公司 | Well cementation cement strikes mechanical properties tester and testing arrangement |
| CN115876613A (en) * | 2022-11-30 | 2023-03-31 | 浙江方泰汽车配件有限公司 | Impact test device for automobile control arm |
| CN115876613B (en) * | 2022-11-30 | 2024-07-05 | 浙江方泰汽车配件有限公司 | Impact test device for automobile control arm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107631945B (en) | 2020-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6990845B2 (en) | Pendulum impact test rig | |
| CN106525577B (en) | Test the device and method of material dynamic mechanical performance under stretching/shearing Combined Loading | |
| CN109813618B (en) | Vertical Hopkinson pressure bar test device and test method | |
| CN101839798B (en) | Device for hypersonic pitching dynamic test | |
| CN103983307B (en) | A kind of little quality impact test test system of variable impact parameter | |
| CN209485644U (en) | A kind of bolt group connection vibration reliability experimental provision | |
| CN107631945A (en) | A kind of small mass force hammer multi-angle impact tester | |
| CN104165838B (en) | A kind of experimental provision impacting drawing and experimental technique | |
| CN111766200B (en) | Test device and method for measuring dynamic bonding strength of sprayed concrete under blasting disturbance | |
| CN110186783A (en) | Compression shear of dropping hammer impact test apparatus | |
| CN115979850A (en) | Pendulum bob-electromagnetic synergistic acceleration impact pressing in-situ testing device | |
| JP2021085872A (en) | Device for testing impact resistance of trabecular structure | |
| CN104089833A (en) | Pneumatic material impact test device simulating shooting of bullet (cannonball) | |
| JP2006194595A (en) | Tensile test method and device | |
| CN108169039B (en) | Portable small-energy impact test device and using method thereof | |
| CN105928807A (en) | Tester for impact resistance of paint film | |
| You et al. | Review of experimental techniques for impact property of adhesive bonds | |
| CN110631788A (en) | Rigidity testing device and method | |
| CN112834325A (en) | A test device for rock developments is direct to be cuted | |
| EP3667904A1 (en) | Hail simulator for testing solar cells and operation method thereof | |
| JPS647332B2 (en) | ||
| CN204374012U (en) | A kind of drop impact tension test truss conversion equipment realizing elimination inertia force influence | |
| CN215115502U (en) | A test device for rock developments is direct to be cuted | |
| CN104236384B (en) | A kind of test method simulating the overload of launching shock in thorax | |
| CN207839433U (en) | Detection device and engine link screening installation with detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200619 |