CN215447867U - Adjustable auxiliary device for testing extrusion strain of high-modulus composite material - Google Patents
Adjustable auxiliary device for testing extrusion strain of high-modulus composite material Download PDFInfo
- Publication number
- CN215447867U CN215447867U CN202121771043.1U CN202121771043U CN215447867U CN 215447867 U CN215447867 U CN 215447867U CN 202121771043 U CN202121771043 U CN 202121771043U CN 215447867 U CN215447867 U CN 215447867U
- Authority
- CN
- China
- Prior art keywords
- testing
- strain
- auxiliary device
- composite material
- high modulus
- 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
Abstract
The utility model belongs to the field of composite materials, and relates to an adjustable auxiliary device for testing the extrusion strain of a high-modulus composite material. The device is a hollow structure, a fastening bolt through hole is formed in one side face of the hollow structure, the other side face is attached to a sample, and the thickness of the side face is consistent with that of the tool. The coplanarity problem of the edge of the clamp type strain gauge can be well guaranteed when the compressive strain is tested, the testing efficiency and the testing precision of the connection compressive strain of the pin or the fastener of the multidirectional laminated board made of the high-modulus fiber reinforced polymer matrix composite are improved, and the testing cost is reduced.
Description
Technical Field
The utility model belongs to the field of composite materials, and relates to an adjustable auxiliary device for testing connection extrusion strain of a pin or a fastener of a high-modulus fiber reinforced polymer matrix composite multidirectional laminated board. In particular to an adjustable auxiliary device for testing the extrusion strain of a high-modulus composite material.
Background
An implementation scheme for testing the similar extrusion strain of the multi-directional laminated plates made of the high-modulus fiber reinforced polymer matrix composite is ASTM D5961 test method for extrusion response of laminated plates made of polymer matrix composite. When the clamp type strain gauge is used for testing the compressive strain, a pad block of the strain gauge needs to be made of a proper material and is adhered to a sample by a proper adhesive, the principle schematic diagram is shown in figure 1, when the clamp type strain gauge is used for testing the compressive strain, the pad block with a certain thickness needs to be adhered to each sample to be coplanar with a test tool so as to ensure the coplanarity of the clamped edge of the strain gauge, the test accuracy is realized, the test process is complex, the test efficiency is low, and the cost is high.
SUMMERY OF THE UTILITY MODEL
By adopting the adjustable auxiliary device suitable for the clamp-type strain gauge, the coplanarity problem of the knife edge of the clamp-type strain gauge can be well guaranteed when the extrusion strain is tested, the test efficiency and the test precision of the connection extrusion strain of the pin or the fastener of the multidirectional laminated board made of the high-modulus fiber reinforced polymer matrix composite material are improved, and the test cost is reduced.
Technical scheme
The utility model provides an auxiliary device with adjustable test high modulus combined material extrusion strain, the device is the hollow structure of type of returning, has seted up fastening bolt clearing hole on the hollow structure of type of returning's a side, and the another side with the sample laminating, this side thickness is unanimous with frock thickness.
The number of the bolt passing holes is more than 2.
And in the other side surface attached to the sample, the flatness of one surface contacted with the strain gauge is less than 0.1.
The adjustable auxiliary device is made of 30CrMnSiA material.
And a protective gasket is arranged on the contact surface of the fastening bolt and the sample.
The hardness of the protective gasket is Shore hardness 60A.
Technical effects
According to the utility model, the adjustable auxiliary device is sleeved into the sample, two fastening bolts are adopted in the device to clamp the sample, and the thickness of the clamping side of the device and the knife edge of the strain gauge is the same as that of the tool, so that the coplanarity of the knife edge of the clamp type strain gauge is ensured, the test precision is ensured, and the test efficiency is improved.
Drawings
FIG. 1 is a schematic view of a compression strain test principle;
FIG. 2 is a schematic front view of a compression strain test principle;
FIG. 3 is a schematic view of the working principle of the test apparatus;
FIG. 4 is a schematic side view of the working principle of the test apparatus;
FIG. 5 is a schematic view of an adjustable auxiliary device;
FIG. 6 is a schematic side view of the adjustable auxiliary device;
figure 7 is a schematic diagram of the operation of the device,
wherein: the method comprises the following steps of 1-experimental tool, 2-strain gauge knife edges, 3-clamp type strain gauges, 4-strain gauge cushion blocks, 5-bolts and 6-samples are installed between the knife edges.
Detailed Description
The utility model is further illustrated with reference to the following figures and examples.
Referring to fig. 5 to 6, the adjustable auxiliary device for testing the extrusion strain of the high modulus composite material of the present invention is a hollow structure, one side of the hollow structure is provided with a fastening bolt through hole, and the other side is attached to a sample, and the thickness of the side is consistent with the thickness of the tool.
The number of the bolt through holes is more than 2, and if the number of the fastening bolts is 1, the fastening is not firm, the device and the sample are displaced, and the testing precision is influenced.
And in the other side surface attached to the sample, the flatness of one surface contacted with the strain gauge is less than 0.1, so that the testing precision is ensured.
The adjustable auxiliary device is made of a 30CrMnSiA material, and the material is consistent with a tool material, so that the deformation in the testing process is guaranteed to be consistent.
The contact surface of the fastening bolt and the sample is provided with a protective gasket, so that the sample is prevented from being damaged in the clamping process.
The hardness of the protection gasket is Shore hardness 60A, so that the clamping of the sample can be guaranteed, and the sample can be prevented from being damaged by the fastening force.
The schematic diagram of the working principle of the test device is shown in fig. 7. The utility model discloses an auxiliary device with adjustable be applicable to double-layered strainometer is time type hollow structure, has seted up fastening bolt clearing hole on time type hollow structure's a side, and with the another side of sample laminating, this side thickness is unanimous with frock thickness. The coplanarity problem of the edge of the clamp type strain gauge can be well guaranteed when the compressive strain is tested, the testing efficiency and the testing precision of the connection compressive strain of the pin or the fastener of the multidirectional laminated board made of the high-modulus fiber reinforced polymer matrix composite are improved, and the testing cost is reduced. The device has the advantages of variable gauge length, repeated use, capability of solving the problem of coplanarity of the knife edges of the strain gauges without bonding cushion blocks, improvement of the testing precision and efficiency, and reduction of the testing difficulty and cost.
Claims (6)
1. The utility model provides an auxiliary device with adjustable test high modulus combined material extrusion strain which characterized in that, the device is the hollow structure of type of returning, has seted up fastening bolt through hole on the hollow structure of type of returning's a side, the hollow structure of type of returning and the another side of sample laminating, and this side thickness is unanimous with frock thickness.
2. The tunable auxiliary device for testing the crush strain of a high modulus composite material of claim 1, wherein the number of the fastening bolts passing through the holes is greater than 2.
3. The adjustable auxiliary device for testing the compressive strain of the high modulus composite material as claimed in claim 1, wherein the flatness of the surface of the hollow clip structure contacting the strain gauge on the other side of the hollow clip structure contacting the test sample is less than 0.1.
4. The tunable auxiliary device for testing the extrusion strain of high modulus composite of claim 1, wherein the tunable auxiliary device is made of 30CrMnSiA material.
5. The adjustable auxiliary device for testing the compressive strain of high modulus composite of claim 1, wherein the contact surface of the fastening bolt and the test sample is provided with a protective gasket.
6. The adjustable assistance device for testing the crush strain of a high modulus composite material according to claim 5, wherein the hardness of the protection gasket is Shore hardness 60A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121771043.1U CN215447867U (en) | 2021-07-30 | 2021-07-30 | Adjustable auxiliary device for testing extrusion strain of high-modulus composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121771043.1U CN215447867U (en) | 2021-07-30 | 2021-07-30 | Adjustable auxiliary device for testing extrusion strain of high-modulus composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215447867U true CN215447867U (en) | 2022-01-07 |
Family
ID=79686027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121771043.1U Active CN215447867U (en) | 2021-07-30 | 2021-07-30 | Adjustable auxiliary device for testing extrusion strain of high-modulus composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215447867U (en) |
-
2021
- 2021-07-30 CN CN202121771043.1U patent/CN215447867U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106932253B (en) | Test the test specimen component and test method of rock I-II mixed mode dynamic fracture toughness | |
| Shim et al. | Characterization of the residual mechanical properties of woven fabric reinforced composites after low-velocity impact | |
| CN104913985A (en) | Determination apparatus and determination method for concrete impact flexural-tensile injury based on non-equilibrium state | |
| CN203241296U (en) | Tensile clamp device for longitudinal arc sheet tensile sample of high-strength pipe | |
| CN203164050U (en) | Clamp device for tensile of ultrahigh-strength steel plates | |
| Naik et al. | Experimental studies on impact behaviour of woven fabric composites: Effect of impact parameters | |
| Fuoss et al. | Effects of stacking sequence on the impact resistance in composite laminates. Part 2: prediction method | |
| CN110108567B (en) | Ceramic matrix composite interlaminar tensile test piece, and preparation method and test method thereof | |
| CN110553932A (en) | Tensile experimental apparatus of low strain rate in combined material board | |
| CN215447867U (en) | Adjustable auxiliary device for testing extrusion strain of high-modulus composite material | |
| CN106769550B (en) | Test device and method for tensile modulus of concrete under high strain rate | |
| CN102252922B (en) | Method for evaluating environment load resistance of coating material | |
| CN112033798A (en) | Baxinge effect test fixture | |
| CN206132523U (en) | Curved test device that draws of developments based on hopkinson pressure bar technique | |
| Cairns | A simple, elasto-plastic contact law for composites | |
| Ashton et al. | Experimental study of the stability of composite plates | |
| CN108693032A (en) | A kind of plank compression performance test sample, fixture and method | |
| CN204373997U (en) | A kind of elastomeric material is sheared and is substituted experiment unit clamp | |
| CN216560014U (en) | Clamp suitable for uniaxial tensile test of foam metal material | |
| CN113252439A (en) | Composite laminate fatigue test clamping device | |
| CN205679472U (en) | A kind of overlap joint joint test part bend preventing device | |
| Lahuerta et al. | Static and fatigue performance of thick laminates test design and experimental compression results | |
| CN210375943U (en) | Clamping device for testing shear strength of vibration reduction composite board | |
| CN210401093U (en) | Pressure-shear combined loading test device for flexible joint elastic part material | |
| CN208334057U (en) | A kind of longitudinal stretching shearing test clamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |