CN112326416B - Fiber bundle dynamic tensile experiment clamp and experiment use method thereof - Google Patents
Fiber bundle dynamic tensile experiment clamp and experiment use method thereof Download PDFInfo
- Publication number
- CN112326416B CN112326416B CN202011354348.2A CN202011354348A CN112326416B CN 112326416 B CN112326416 B CN 112326416B CN 202011354348 A CN202011354348 A CN 202011354348A CN 112326416 B CN112326416 B CN 112326416B
- Authority
- CN
- China
- Prior art keywords
- tooth
- shaped structure
- clamp
- cylinder
- fiber bundle
- 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.)
- Active
Links
Images
Classifications
-
- 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
- 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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0098—Tests specified by its name, e.g. Charpy, Brinnel, Mullen
-
- 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
- G01N2203/025—Geometry of the test
- G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
-
- 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
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
-
- 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
- G01N2203/0405—Features allowing alignment between specimen and chucks
Landscapes
- 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 discloses a fiber bundle dynamic tensile experiment clamp which comprises a clamp main body, a fastening block and a fastening shell, wherein the clamp main body is a cylinder, an elongated slot with a sector structure is formed in the outer peripheral surface of one end of the clamp main body along the axial direction of the clamp main body, a continuous tooth-shaped structure I is arranged in the elongated slot along the extension direction of the elongated slot, the fastening block is the sector structure filling the elongated slot, a tooth-shaped structure II matched with the tooth-shaped structure I is arranged on the fastening block, the fastening block is arranged in the elongated slot to enable the tooth-shaped structure II to be in contact meshing with the tooth-shaped structure I, and the fastening shell is sleeved on the outer peripheral surface of the clamp main body at the contact meshing position of the fastening block and the tooth-shaped structure I to enable the fastening block to be tightly pressed in the elongated slot. The invention also discloses an experimental use method of the experimental clamp. The invention has simple structure, can be repeatedly used, has instantaneity, and can play a good fastening effect on a fiber monofilament or fiber bundle test piece in the dynamic stretching process on the Hopkinson pull rod.
Description
Technical Field
The invention belongs to the field of material impact dynamics, and particularly relates to a fiber bundle dynamic tensile experiment clamp and an experiment using method thereof.
Background
The fiber reinforced composite material has the advantages of small specific gravity, high specific strength and specific modulus, good fatigue resistance, good designability and the like, and is widely applied to the fields of ships, aerospace, machinery, wind power energy and the like. Therefore, accurately obtaining the dynamic mechanical properties of the fiber bundle and the single fiber material within the full strain rate range, especially the dynamic mechanical properties under the medium and high strain rate becomes the key and difficult point of the application of the current fiber reinforced composite material.
The Hopkinson bar is a main experimental device for obtaining the dynamic mechanical properties of materials in the fields of various engineering technologies, military technologies, scientific research and the like, and the dynamic tensile mechanical properties of a fiber bundle or a single fiber are usually obtained through Hopkinson bar experiments. Because the fiber bundle and the single fiber are flexible substances and cannot be directly connected with the incident rod and the transmission rod of the Hopkinson pull rod, the experiment needs to be completed by means of the switching clamp, the traditional fiber bundle dynamic tensile experiment firstly needs to use an adhesive to solidify and connect the fiber bundle test piece with the switching clamp, and then the switching clamp is connected with the incident rod and the transmission rod of the Hopkinson pull rod through threads or clamping grooves to perform the experiment.
The conventional adapter clamp is provided with a split Hopkinson pull rod test piece clamp device (CN 201320533953.5), a plurality of groups of tensile joints are adopted in the clamp, and a bonding mode is adopted between a test piece and the joints. Because of the adoption of an adhesive mode, the adhesive layer is equivalent to a buffer layer, and incident waves pass through the adhesive layer, so that the adhesive layer can absorb a part of energy to influence the precision of an experiment and the accuracy of a result. Therefore, it takes too long time to set the adhesive for at least 24 hours. Due to the gluing mode, the clamp is difficult to reuse. The clamp can not realize the fastening of the fiber monofilament or fiber bundle test piece. The patent CN201721809517.0 discloses a separated Hopkinson pull rod experiment clamp, a test piece is fixed through a groove between a main clamp and an auxiliary clamp, the main clamp and the auxiliary clamp are fixed through fastening nuts, and the patent CN202010290323.4 discloses a tensile clamp and an experiment method of a separated Hopkinson pull rod sheet test piece, wherein the clamps in the two patents are similar, the test piece is fixed through the groove, and the main clamp and the auxiliary clamp are fixed through clamping grooves. The fixture with the clamping groove is only suitable for manufacturing test pieces with the grooves and is not suitable for dynamic tensile tests of fiber monofilament or fiber bundle test pieces.
When carrying out the dynamic tensile experiment of fibre monofilament or tow test piece on the hopkinson pull rod, still have two problems, tow test piece both ends can't guarantee in the installation that test length does not change, can't guarantee the effective length of tow test piece promptly and can't guarantee tow test piece and hopkinson pull rod concentricity promptly, can't guarantee the concentricity of tow test piece promptly.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the existing problems, the invention provides the clamp which is simple in structure, can be repeatedly used and has instantaneity, so that the fastening requirement of a fiber monofilament or fiber bundle test piece in the dynamic tensile experiment process on the Hopkinson pull rod is met, and the accuracy and the reliability of the experiment result are ensured. And provides an experimental use method of the test fixture.
The technical scheme is as follows: a fiber bundle dynamic tensile experiment clamp comprises a clamp main body, a fastening block and a fastening shell, wherein an elongated slot in a fan-shaped structure is formed in the outer peripheral surface of one end of the fastening shell along the axial direction of the elongated slot, a first tooth-shaped structure is arranged at the bottom of the elongated slot along the extending direction of the elongated slot, the fastening block is the fan-shaped structure filling the elongated slot, a second tooth-shaped structure matched with the first tooth-shaped structure is arranged on the fastening block, the fastening block is arranged in the elongated slot to enable the second tooth-shaped structure to be in contact meshing with the first tooth-shaped structure, and the fastening shell is sleeved on the outer peripheral surface of the clamp main body at the contact meshing position of the fastening block and the tooth-shaped structure, so that the fastening block is tightly pressed in the elongated slot.
Further, the clamp main body comprises a first cylinder and a second cylinder which are coaxially connected in an integrated forming mode, the diameter of the first cylinder is larger than that of the second cylinder, the long groove is formed in the second cylinder, external threads are arranged on the outer peripheral surface of the whole formed by the fastening block and the second cylinder, the fastening shell is in threaded connection with the first cylinder and the second cylinder, and the outer peripheral surface of the first cylinder is in threaded connection with the Hopkinson bar.
Furthermore, the first tooth-shaped structure extends and distributes from the joint of the first cylinder and the second cylinder to the free end of the second cylinder in a width decreasing mode.
Furthermore, a first limiting groove is formed in one end, connected with the second cylinder, of the first cylinder along the radial direction of the first cylinder.
Furthermore, a second limiting groove is formed in the bottom surface of the long groove, and the second limiting groove extends from one end of the long groove to one direction of the tooth-shaped structure.
Furthermore, the included angle of the fastening block is an acute angle, and the included angle of the bottom of the long groove is equal to the included angle of the fastening block.
Preferably, the included angle of the fastening block is 30-45 degrees.
Furthermore, the first tooth-shaped structure is a continuous arc-shaped tooth surface structure, and the second tooth-shaped structure is the same as the first tooth-shaped structure.
The arc-shaped structure can effectively reduce the shearing force when the fiber bundle test piece is clamped, improve the friction force to the fiber bundle in the experiment process, improve the fastening effect and ensure the reliability and accuracy of the experiment.
Preferably, the number of teeth of the first tooth-shaped structure is 3-6, and the number of teeth of the second tooth-shaped structure is the same as that of the first tooth-shaped structure.
Because the restriction of anchor clamps actual size, under the prerequisite of the in-process fastening effect of guaranteeing the test, select the number of teeth for 3 ~ 6, if too much not only can increase the processing degree of difficulty and cost, can increase the shearing force moreover, cause the tow broken string easily, reduce the reliability of experiment.
An experimental use method of the fiber bundle dynamic tensile experimental clamp comprises the following steps:
step one, an incident rod and a transmission rod of the Hopkinson pull rod are respectively connected with one end of the clamp body through threads.
Step two, penetrating the fiber bundle test piece between the clamp main body at the other end of the clamp main body and the fastening block, enabling the fiber bundle test piece to pass between the mutually contacted and meshed tooth-shaped structure II and the tooth-shaped structure I, and then penetrating out from the other end of the fastening block;
winding the penetrated part of the fiber bundle test piece on the outer peripheral surface of the whole formed by the clamp main body and the fastening block;
step four, sleeving and installing the fastening shell on the outer peripheral surface of the clamp main body at the contact and meshing position of the tooth-shaped structure II and the tooth-shaped structure I, and pressing the fastening block in the long groove, so that part of the fiber bundle test piece between the tooth-shaped structure II and the tooth-shaped structure I is pressed for the second time;
and step five, carrying out a dynamic tensile experiment of the fiber bundle.
Compared with the prior art, the invention has the beneficial effects that:
(1) The dynamic tensile test device can realize the dynamic tensile test of a fiber monofilament or fiber bundle test piece or a plastic rope test piece on the Hopkinson pull rod under the condition that the strain rate is 100/s-3000/s.
(2) The clamping device solves the clamping and fastening problem of fiber monofilament or fiber bundle test pieces (plastic rope and other test pieces) and prevents the test pieces from slipping; the invention has double fastening effects, the tooth-shaped structure is a first clamping and fastening structure, the fastening shell realizes a second clamping and fastening structure, and the firmness is ensured.
(3) The invention does not use adhesive to fix the test piece, reduces the energy absorbed by the adhesive as a buffer layer, ensures higher experimental precision and ensures the reliability of experimental results.
(4) The invention does not use adhesive, solves the problem of one-time use of the clamp and reduces the use cost of the clamp.
(5) The invention can meet the instantaneity of the clamp, and the experiment can be carried out after clamping and fastening the fiber bundle test piece.
(6) The invention realizes that the test piece is directly clamped after the test piece is clamped twice, thereby ensuring the effective length of the test piece.
(7) The invention is provided with the limiting groove, so that the concentricity of the test piece can be ensured.
Drawings
FIG. 1 is a full cross-sectional view of the clamp;
FIG. 2 is a schematic view of the use of the clamp;
FIG. 3 is an isometric view of the clamp body;
FIG. 4 is a full cross-sectional view of the clamp body;
FIG. 5 is an axial side view of the fastening block;
FIG. 6 is a full sectional view of the fastening block;
FIG. 7 is a full sectional view of the fastener sleeve;
the clamp comprises a clamp body 1, a cylinder I1-1, a cylinder II 1-2, a fastening block 2, a fastening shell 3, an elongated slot 1-3, a tooth-shaped structure I1-4, a tooth-shaped structure II 2-1, a limiting groove I1-5, a limiting groove II 1-6, a Hopkinson pull rod 4 and a fiber bundle test piece 5.
Detailed Description
The present invention will be further illustrated with reference to the following figures and specific examples, which are to be understood as merely illustrative and not restrictive of the scope of the invention.
A fiber bundle dynamic tensile experiment clamp is shown in figures 1-7 and comprises a clamp main body 1, a fastening block 2 and a fastening shell 3, wherein the clamp main body 1 comprises a first cylinder 1-1 and a second cylinder 1-2 which are formed and coaxially connected, the diameter of the first cylinder 1-1 is larger than that of the second cylinder 1-2, an elongated slot 1-3 which is of a fan-shaped structure is formed in the outer circumferential surface of the second cylinder 1-2 along the axial direction of the elongated slot, the bottom of the elongated slot 1-3 is provided with a first tooth-shaped structure 1-4 along the extending direction of the bottom, the first tooth-shaped structure 1-4 is a continuous arc tooth surface structure, the first tooth-shaped structure 1-4 extends from the connecting position of the first cylinder 1-1 and the second cylinder 1-2 to the free end of the second cylinder 1-2 in a width decreasing mode, the number of teeth is 3-6, the number of teeth is preferably 3-6 on the premise of confirming the fastening effect in the experiment process due to actual size limitation, if too much, the processing difficulty and cost are increased, the shearing force is easily caused, the fiber bundle breakage is easily caused, and the reliability of the fiber bundle is reduced. The arc-shaped tooth form can effectively reduce the shearing force when the fiber bundle test piece is clamped, improve the friction force to the fiber bundle in the experiment process, improve the fastening effect and ensure the reliability and accuracy of the experiment. The bottom surface of the long groove 1-3 is provided with a second limiting groove 1-6, and the second limiting groove 1-6 extends from one end of the long groove 1-3 to the first tooth-shaped structure 1-4 direction.
The fastening block 2 is a sector structure filling the elongated slot 1-3, the included angle of the fastening block 2 is an acute angle, the angle is 30-45 degrees, the included angle of the bottom of the elongated slot 1-3 is equal to the included angle of the fastening block 2, the fastening block 2 is provided with a tooth-shaped structure II 2-1 matched with the tooth-shaped structure I1-4, the tooth-shaped structure II 2-1 is identical to the tooth-shaped structure I1-4 in structure and tooth number, the fastening block 2 is arranged in the elongated slot 1-3 to enable the tooth-shaped structure II 2-1 to be in contact meshing with the tooth-shaped structure I1-4, one end of the cylinder I1-1 connected with the cylinder II 1-2 is provided with a limiting groove I1-5 along the radial direction, and the limiting groove I1-5 extends to the contact meshing position where the tooth-shaped structure II 2-1 is in contact with the tooth-4.
The fastening shell 3 is of a circular sleeve structure, internal threads are arranged in the fastening shell, external threads are arranged on the outer peripheral surface of the whole formed by the fastening block 2 and the cylinder II 1-2, the fastening shell 3 is sleeved on the outer peripheral surface of the clamp body 1 at the contact and meshing position of the tooth-shaped structure II 2-1 and the tooth-shaped structure I1-4 and is in threaded connection with the outer peripheral surface of the whole formed by the fastening block 2 and the cylinder II 1-2, and the fastening block 2 is tightly pressed in the long grooves 1-3. The peripheral surface of the first cylinder 1-1 is in threaded connection with the Hopkinson pull rod 4.
The experimental use method of the fiber bundle dynamic tensile experimental clamp comprises the following steps:
step one, preparation before clamping: the cylinder 1-1 of the clamp body 1 is respectively connected with the incident rod and the transmission rod of the Hopkinson bar 4 through threads.
Step two, clamping the test piece:
firstly, penetrating a fiber bundle test piece 5 into a second limiting groove 1-6 at the end part of a long groove 1-3 of a clamp main body 1, wherein the second limiting groove 1-6 can ensure the concentricity of the fiber bundle test piece 5;
secondly, passing the fiber bundle test piece 5 between a tooth-shaped structure II 2-1 and a tooth-shaped structure I1-4 which are contacted and meshed with each other;
thirdly, the fiber bundle test piece 5 penetrates out of a limiting groove I1-5 formed in the joint of the cylinder I1-1 and the cylinder II 1-2, the diameter difference of the cylinder I1-1 and the cylinder II 1-2 forms a step, and the part, penetrating out, of the fiber bundle test piece 5 is wound on the step, namely on the outer peripheral surface of the whole formed by the clamp main body 1 and the fastening block 2;
and finally, sleeving and installing the fastening shell 3 on the outer peripheral surface of the clamp main body 1 at the contact and meshing part of the tooth-shaped structure II 2-1 and the tooth-shaped structure I1-4, and pressing the fastening block 2 in the long groove 1-3, so that part of the fiber bundle test piece between the tooth-shaped structure II 2-1 and the tooth-shaped structure I1-4 is pressed for the second time.
Step three, starting an experiment: and after the fiber bundle test piece 5 is connected with the clamp and the clamp is connected with the Hopkinson pull rod 4, the fiber bundle dynamic tensile experiment can be carried out.
The first tooth-shaped structure 1-4 of the clamp main body 1 and the second tooth-shaped structure 2-1 of the fastening block 2 are meshed with each other to achieve first re-clamping of the fiber bundle test piece 5, the first limiting groove 1-5 provides a precondition for second re-clamping of the clamp, the fastening shell 3 achieves second re-clamping of the fiber bundle test piece 5, and effective and firm fastening of the fiber bundle test piece 5 is guaranteed through double measures, so that the use of an adhesive for fixing the test piece is avoided, the energy absorbed by the adhesive as a buffer layer is reduced, the experimental precision is higher, and the reliability of experimental results is guaranteed.
Claims (7)
1. The utility model provides a tow developments tensile experiment anchor clamps which characterized in that: the clamp comprises a clamp main body, a fastening block and a fastening shell, wherein a long groove in a sector structure is formed in the outer peripheral surface of one end of the fastening shell along the axial direction of the fastening shell, a first tooth-shaped structure is arranged at the bottom of the long groove along the extension direction of the long groove, the fastening block is in the sector structure filling the long groove, a second tooth-shaped structure matched with the first tooth-shaped structure is arranged on the fastening block, the fastening block is arranged in the long groove to enable the second tooth-shaped structure to be in contact engagement with the first tooth-shaped structure, and the fastening shell is sleeved on the outer peripheral surface of the clamp main body at the contact engagement part of the fastening block and the tooth-shaped structure, so that the fastening block is tightly pressed in the long groove;
the clamp main body comprises a first cylinder and a second cylinder which are coaxially connected in an integrated manner, the diameter of the first cylinder is larger than that of the second cylinder, the long groove is formed in the second cylinder, external threads are arranged on the outer peripheral surface of the whole body formed by the fastening block and the second cylinder, the fastening shell is in threaded connection with the first cylinder and the second cylinder, and the outer peripheral surface of the first cylinder is in threaded connection with the Hopkinson bar;
a first limiting groove is formed in one end, connected with the second cylinder, of the first cylinder along the radial direction of the first cylinder;
and a second limiting groove is formed in the bottom surface of the long groove, and extends from one end of the long groove to one direction of the tooth-shaped structure.
2. The clamp for the fiber bundle dynamic tension experiment according to claim 1, wherein: the first tooth-shaped structure is distributed in a width decreasing type extending mode from the joint of the first cylinder and the second cylinder to the free end of the second cylinder.
3. The clamp for the fiber bundle dynamic tension experiment according to claim 1, characterized in that: the included angle of the fastening block is an acute angle, and the included angle of the bottom of the long groove is equal to the included angle of the fastening block.
4. The clamp for the fiber bundle dynamic tension experiment according to claim 3, wherein: the included angle of the fastening block is 30-45 degrees.
5. The clamp for the fiber bundle dynamic tension experiment according to claim 1, wherein: the first tooth-shaped structure is a continuous arc-shaped tooth surface structure, and the second tooth-shaped structure is the same as the first tooth-shaped structure.
6. The clamp for the fiber bundle dynamic tension experiment according to claim 5, wherein: the number of teeth of the first tooth-shaped structure is 3-6, and the number of teeth of the second tooth-shaped structure is the same as that of the first tooth-shaped structure.
7. The experimental use method of the clamp for the fiber bundle dynamic tension experiment according to any one of claims 1 to 6, characterized by comprising the following steps:
step one, an incident rod and a transmission rod of the Hopkinson pull rod are respectively connected with one end of the clamp body through threads;
step two, penetrating the fiber bundle test piece between the clamp main body at the other end of the clamp main body and the fastening block, enabling the fiber bundle test piece to pass between the mutually contacted and meshed tooth-shaped structure II and the tooth-shaped structure I, and then penetrating out from the other end of the fastening block;
winding the penetrated part of the fiber bundle test piece on the outer peripheral surface of the whole formed by the clamp main body and the fastening block;
step four, sleeving and installing the fastening shell on the outer peripheral surface of the clamp main body at the contact and meshing part of the second tooth-shaped structure and the first tooth-shaped structure, and pressing the fastening block in the long groove, so that part of the fiber bundle test piece between the second tooth-shaped structure and the first tooth-shaped structure is pressed secondarily;
and step five, carrying out a dynamic tensile experiment of the fiber bundle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011354348.2A CN112326416B (en) | 2020-11-27 | 2020-11-27 | Fiber bundle dynamic tensile experiment clamp and experiment use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011354348.2A CN112326416B (en) | 2020-11-27 | 2020-11-27 | Fiber bundle dynamic tensile experiment clamp and experiment use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112326416A CN112326416A (en) | 2021-02-05 |
| CN112326416B true CN112326416B (en) | 2023-02-03 |
Family
ID=74309140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011354348.2A Active CN112326416B (en) | 2020-11-27 | 2020-11-27 | Fiber bundle dynamic tensile experiment clamp and experiment use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112326416B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589604A (en) * | 2024-01-19 | 2024-02-23 | 南京航空航天大学 | Yarn dynamic stretching device based on Hopkinson pull rod and mechanical testing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897461A (en) * | 2015-06-16 | 2015-09-09 | 南京理工大学 | Dynamic tension experiment fixture |
| CN105424470A (en) * | 2015-11-18 | 2016-03-23 | 太原理工大学 | Clamping device and experiment method for split Hopkinson torsion bar test piece |
| CN210037417U (en) * | 2019-05-28 | 2020-02-07 | 湖南科技大学 | Disconnect-type hopkinson pull rod anchor clamps |
| CN111678639A (en) * | 2020-06-18 | 2020-09-18 | 中国人民解放军国防科技大学 | Free field pressure sensor dynamic sensitivity coefficient calibration device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361023B (en) * | 2018-01-18 | 2021-08-24 | 西南石油大学 | Method for evaluating failure strength of well cementation primary and secondary cementing surfaces under dynamic load |
-
2020
- 2020-11-27 CN CN202011354348.2A patent/CN112326416B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897461A (en) * | 2015-06-16 | 2015-09-09 | 南京理工大学 | Dynamic tension experiment fixture |
| CN105424470A (en) * | 2015-11-18 | 2016-03-23 | 太原理工大学 | Clamping device and experiment method for split Hopkinson torsion bar test piece |
| CN210037417U (en) * | 2019-05-28 | 2020-02-07 | 湖南科技大学 | Disconnect-type hopkinson pull rod anchor clamps |
| CN111678639A (en) * | 2020-06-18 | 2020-09-18 | 中国人民解放军国防科技大学 | Free field pressure sensor dynamic sensitivity coefficient calibration device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112326416A (en) | 2021-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8425143B2 (en) | End anchoring structure and method for fiber-reinforced plastic filament body | |
| CA1214981A (en) | Composite laminate joint structure and method and apparatus for making same | |
| US7451527B2 (en) | Rope terminator | |
| JP3495553B2 (en) | Drive shaft with a reinforced plastic tube and a joint coupling vertically connected to it so as not to rotate. | |
| CN112326416B (en) | Fiber bundle dynamic tensile experiment clamp and experiment use method thereof | |
| CN111021632A (en) | FRP multilayer sheet anchoring system based on ring-clamp synergistic effect | |
| CN112064504B (en) | Self-anchored carbon fiber inhaul cable and processing method thereof | |
| CN105874120A (en) | Rope end-fastening method, rope with end fastener, and end fitting for use in rope end-fastening method | |
| CN103669208A (en) | Anchoring method applicable to large-tonnage FRP inhaul cable | |
| CN107449661B (en) | Rectangular strip thin plate type test piece tensile test clamp | |
| CN101603353A (en) | A kind of composite anchorage that is used for anchoring multiple fibre reinforced plastic twisted wire muscle or drag-line | |
| CN201408962Y (en) | Strain clamp for conductor with carbon fiber composite core | |
| CN102680320A (en) | Fixture for testing tensile properties of ultrathin flexible membrane materials | |
| CN102410153A (en) | Rotor blade or rotor blade segment for a wind turbine | |
| CN103321150A (en) | Pretightening-force-adjustable friction-type anchorage device applied to fiber-reinforced composite material rib inhaul cable | |
| CN210037417U (en) | Disconnect-type hopkinson pull rod anchor clamps | |
| CN111319283A (en) | Composite material and metal joint forming process | |
| CN2090983U (en) | Monodirectional chuck for testing glass fiber reinforced plastic rod | |
| CN112525674B (en) | Dynamic tensile experiment clamp for fastening fiber bundle in real time and clamping method thereof | |
| JPH05106629A (en) | Load transmitting shaft made of fiber reinforced plastics | |
| CN202474759U (en) | Locking device for carbon fiber composite core conductor | |
| CN109736500B (en) | Endless cable node connecting device for CFRP cable suspended dome structure | |
| CN213113678U (en) | Fiber bundle reinforced composite structure | |
| CN211266439U (en) | Novel carbon fiber composite core wire splicing sleeve | |
| CN103352538A (en) | Prestress fiber reinforced polymer cable anchoring device with auxiliary clamp rings |
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 |