CN110779871A - A pull head subassembly for testing tensile strength between multilayer combined material layer - Google Patents
A pull head subassembly for testing tensile strength between multilayer combined material layer Download PDFInfo
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- CN110779871A CN110779871A CN201911279159.0A CN201911279159A CN110779871A CN 110779871 A CN110779871 A CN 110779871A CN 201911279159 A CN201911279159 A CN 201911279159A CN 110779871 A CN110779871 A CN 110779871A
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- pull head
- tensile strength
- composite material
- multilayer composite
- testing
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- 238000012360 testing method Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 title claims description 14
- 239000011185 multilayer composite material Substances 0.000 claims abstract description 29
- 239000007769 metal material Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 abstract description 17
- 239000011229 interlayer Substances 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009864 tensile test Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 8
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- 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 pull head assembly for testing the tensile strength between layers of a multilayer composite material, which comprises two semi-circular cross-section pull heads, four connecting rods and two clamping pieces, wherein the two ends of each pull head are provided with a plug pin; when the device is used, the two semicircular section pull heads are spliced into a cylinder shape and inserted into the round hole in the multilayer composite material spline with the round hole in the middle, the two ends of the pull heads are connected to the clamping pieces through the connecting rods, and the two clamping heads of the electronic tensile testing machine clamp the clamping pieces to drive the pull heads to stretch towards the direction perpendicular to the sheet layer surface at the two sides so as to measure the interlayer tensile strength of the multilayer composite material. In addition, the invention has simple and small structure, portability, reasonable design, simple manufacture, convenient use and easy operation, and is beneficial to popularization and use.
Description
Technical Field
The invention belongs to the technical field of material performance testing, and particularly relates to a pull head assembly for testing tensile strength between layers of a multilayer composite material.
Background
A multilayer composite material is a composite material produced by laminating, bonding and adhering a plurality of sheets, and is widely used in furniture plates, ship hulls, airplane housings, electric vehicle housings, and the like. Generally, the stronger the adhesion between the sheet layers making up the multilayer composite, the better the mechanical properties of the multilayer composite. The interlayer bond strength of a multilayer composite can be measured by applying a shear or peel force to two adjacent plies of the multilayer composite, typically by an electronic tensile tester. The electronic tension tester is also called a material tension tester and a universal material tester, consists of a chuck, a measuring system, a driving system, a control system and other structures, is used for the tests of tension, bending, compression and the like of a material sample, and can apply tension force to the material so as to measure the tensile strength of the material. The tensile force pulling the plies apart perpendicular to the ply plane is difficult to apply well to the multi-layer composite and thus the interlaminar tensile bond strength of the multi-layer composite is difficult to measure well accurately.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a pull head assembly for testing the interlayer tensile strength of a multilayer composite material, which can effectively measure the interlayer tensile strength of the multilayer composite material.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a pull head subassembly for testing tensile strength between multilayer combined material layer which characterized in that: comprises a semi-circular section pull head, a plug pin, a connecting rod and a clamping piece; both ends of the semi-circular section pull head are fixedly connected with bolts; two ends of the connecting rod are respectively provided with a round hole and a rectangular hole; the bolt can be inserted into the round hole of the connecting rod; one end of the clamping piece can be inserted into the rectangular hole of the connecting rod.
Foretell a pull head subassembly for testing tensile strength between multilayer combined material layer which characterized in that: the number of the semicircular section sliders is two.
Foretell a pull head subassembly for testing tensile strength between multilayer combined material layer which characterized in that: the number of the connecting rods is four, and the four connecting rods are symmetrically arranged at two ends of the two semicircular section sliders.
Foretell a pull head subassembly for testing tensile strength between multilayer combined material layer which characterized in that: the number of the clamping pieces is two, and the two clamping pieces are symmetrically arranged on two sides of the two semicircular section sliders.
Foretell a pull head subassembly for testing tensile strength between multilayer combined material layer which characterized in that: the semi-circular section pull head, the plug pin, the connecting rod and the clamping piece are all made of metal materials.
When the pull head assembly for testing the interlayer tensile strength of the multilayer composite material is used, the two pull heads with the semicircular sections are spliced into a cylinder shape and inserted into a circular hole in a multilayer composite material spline with a circular hole in the middle, the axis of the circular hole in the multilayer composite material spline with the circular hole in the middle is parallel to the plane of a sheet layer of the multilayer composite material, and the spliced surfaces of the two pull heads with the semicircular sections are placed in a parallel state with the plane of the sheet layer of the multilayer composite material; inserting four inserting pins at two ends of the two semicircular section pull heads into round holes of the four connecting rods respectively, and inserting two ends of the two clamping pieces into rectangular holes of the four connecting rods respectively; the two clamping pieces are clamped by two clamping heads of the electronic tensile testing machine respectively and are stretched towards two sides, so that the two semicircular section pull heads are driven to stretch the multilayer composite material spline with the round hole in the middle from the round hole to two sides perpendicular to the plane of the multilayer composite material sheet layer, the tensile force can be measured through the electronic tensile testing machine, and the interlayer tensile strength of the multilayer composite material can be measured.
Compared with the prior art, the invention has the following advantages:
1. the invention can apply the tensile force vertical to the sheet layer surface to the multilayer composite material, thereby accurately measuring the interlayer tensile strength of the multilayer composite material;
2. the slider with the semicircular section and the clamping piece can be taken out from the hole on the connecting rod, so that the components of the slider assembly can be disassembled and then assembled into a packaging box, and the slider assembly is convenient to carry;
3. the invention is convenient to use, easy to test and operate and beneficial to popularization and use;
4. the invention has simple structure, reasonable design and simple manufacture, and is beneficial to popularization and use.
The invention is described in further detail below with reference to the figures and examples.
Drawings
FIG. 1 is a drawing of the installation and connection parts of the semi-circular section slider, the latch, the connecting rod and the clamping piece of the invention.
Fig. 2 is a state diagram of the parts of the present invention in use after assembly.
Fig. 3 is a perspective view of a multilayer composite bar with a circular hole in the middle.
Description of reference numerals:
1-a semi-circular section slider; 2, inserting a pin; 3, connecting rods; 4, clamping pieces;
5-a multilayer composite material sample strip with a round hole in the middle.
Detailed Description
As shown in fig. 1, 2 and 3, the invention comprises a semi-circular section slider 1, a bolt 2, a connecting rod 3 and a clamping piece 4; both ends of the semi-circular section pull head 1 are fixedly connected with a plug pin 2; two ends of the connecting rod 3 are respectively provided with a round hole and a rectangular hole; the bolt 2 can be inserted into a round hole of the connecting rod 3; one end of the clip 4 can be inserted into the rectangular hole of the connecting rod 3.
In the present embodiment, the number of the semicircular section sliders 1 is two; the number of the connecting rods 3 is four, and the four connecting rods 3 are symmetrically arranged at two ends of the two semicircular section sliders 1; the number of the clamping pieces 4 is two, and the two clamping pieces 4 are symmetrically arranged on two sides of the two semicircular section sliders 1; the semi-circular section pull head 1, the plug pin 2, the connecting rod 3 and the clamping piece 4 are all made of metal materials.
The working principle of the invention is as follows: when the puller is used, the two semi-circular section pullers 1 are spliced into a cylinder shape and inserted into a circular hole in a multilayer composite material spline 5 with a circular hole in the middle, the axis of the circular hole in the multilayer composite material spline 5 with the circular hole in the middle is parallel to the plane of a multilayer composite material sheet, and the splicing surfaces of the two semi-circular section pullers 1 and the plane of the multilayer composite material sheet are placed in a parallel state; inserting four pins 2 at two ends of two semicircular section sliders 1 into round holes of four connecting rods 3 respectively, and inserting two ends of two clamping pieces 4 into rectangular holes of the four connecting rods 3 respectively; the two clamping pieces 4 are clamped by two clamping heads of the electronic tension tester respectively and stretched towards two sides, so that the two semicircular section pull heads 1 are driven to stretch the multilayer composite material spline 5 with the round hole in the middle from the round hole to two sides perpendicular to the plane of the sheet layer of the multilayer composite material, the stretching force can be measured through the electronic tension tester, and the interlayer tensile strength of the multilayer composite material can be measured.
Claims (5)
1. The utility model provides a pull head subassembly for testing tensile strength between multilayer combined material layer which characterized in that: comprises a semi-circular section pull head (1), a plug pin (2), a connecting rod (3) and a clamping piece (4); both ends of the semi-circular section pull head (1) are fixedly connected with a plug pin (2); two ends of the connecting rod (3) are respectively provided with a round hole and a rectangular hole; the bolt (2) can be inserted into a round hole of the connecting rod (3); one end of the clamping piece (4) can be inserted into the rectangular hole of the connecting rod (3).
2. The pull head assembly for testing the tensile strength between layers of a multi-layer composite material of claim 1, wherein: the number of the semicircular section sliders (1) is two.
3. The pull head assembly for testing the tensile strength between layers of a multi-layer composite material of claim 1, wherein: the number of the connecting rods (3) is four, and the four connecting rods (3) are symmetrically arranged at two ends of the two semicircular section sliders (1).
4. The pull head assembly for testing the tensile strength between layers of a multi-layer composite material of claim 1, wherein: the number of the clamping pieces (4) is two, and the two clamping pieces (4) are symmetrically arranged on two sides of the two semicircular section sliders (1).
5. The pull head assembly for testing the tensile strength between layers of a multi-layer composite material of claim 1, wherein: the semi-circular section pull head (1), the plug pin (2), the connecting rod (3) and the clamping piece (4) are all made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911279159.0A CN110779871A (en) | 2019-12-13 | 2019-12-13 | A pull head subassembly for testing tensile strength between multilayer combined material layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911279159.0A CN110779871A (en) | 2019-12-13 | 2019-12-13 | A pull head subassembly for testing tensile strength between multilayer combined material layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110779871A true CN110779871A (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911279159.0A Pending CN110779871A (en) | 2019-12-13 | 2019-12-13 | A pull head subassembly for testing tensile strength between multilayer combined material layer |
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| Country | Link |
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| CN (1) | CN110779871A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220867A (en) * | 2011-03-31 | 2011-10-19 | 范金成 | Stone stripping expanding fixture |
| CN105486580A (en) * | 2015-12-03 | 2016-04-13 | 天津东义镁制品股份有限公司 | Method for detecting extruding and welding strength of magnesium hollow section bar |
| CN107748104A (en) * | 2017-09-05 | 2018-03-02 | 中建商品混凝土有限公司 | The method of testing of 3D printing building structure bond strength between layers |
| CN108548719A (en) * | 2018-03-07 | 2018-09-18 | 北京航空航天大学 | A kind of composite material interlayer normal strength test method |
| CN211206207U (en) * | 2019-12-13 | 2020-08-07 | 陕西理工大学 | A pull head subassembly for testing tensile strength between multilayer combined material layer |
-
2019
- 2019-12-13 CN CN201911279159.0A patent/CN110779871A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220867A (en) * | 2011-03-31 | 2011-10-19 | 范金成 | Stone stripping expanding fixture |
| CN105486580A (en) * | 2015-12-03 | 2016-04-13 | 天津东义镁制品股份有限公司 | Method for detecting extruding and welding strength of magnesium hollow section bar |
| CN107748104A (en) * | 2017-09-05 | 2018-03-02 | 中建商品混凝土有限公司 | The method of testing of 3D printing building structure bond strength between layers |
| CN108548719A (en) * | 2018-03-07 | 2018-09-18 | 北京航空航天大学 | A kind of composite material interlayer normal strength test method |
| CN211206207U (en) * | 2019-12-13 | 2020-08-07 | 陕西理工大学 | A pull head subassembly for testing tensile strength between multilayer combined material layer |
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