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Auxiliary device and method for composite material interface shear strength test device

A technology for interfacial shear strength and composite materials, applied in measuring devices, using stable tension/pressure to test material strength, analyzing materials, etc., can solve problems such as difficult to accurately measure interfacial shear strength of composite materials

Active Publication Date: 2021-04-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an auxiliary device and method for a composite material interface shear strength testing device to solve the problem that it is difficult to accurately measure the composite material interface shear strength in the prior art

Method used

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  • Auxiliary device and method for composite material interface shear strength test device
  • Auxiliary device and method for composite material interface shear strength test device
  • Auxiliary device and method for composite material interface shear strength test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as Figure 1-7 As shown, an auxiliary device of a composite material interface shear strength test device includes a polishing device 1, a column stand 7 and an observation fixture 13, wherein:

[0051] The top surface of the polishing device 1 is a polishing device slope 2 with an inclination angle of θ, and a polishing device horizontal rectangular groove 3 is provided along the inclination direction of the polishing device slope 2,

[0052] The top surface of the pedestal 7 is provided with a pedestal rectangular chute 8 with an inclination angle of θ, and a fiber push-out groove 9 is provided along the inclination direction of the pedestal rectangular chute 8,

[0053] The top surface of the observation fixture 13 is provided with an observation fixture rectangular chute 14 with an inclination angle of θ,

[0054] The composite material test sample 4 is placed in the horizontal rectangular groove 3 of the polishing device, and the top surface of the composite ...

Embodiment 2

[0060] A method for an auxiliary device of a composite material interface shear strength testing device, comprising the following steps:

[0061] S1. Make a composite material test sample with a thickness of 1-2 mm, use liquid glue to fix the composite material test sample on the horizontal rectangular groove of the polishing device, and use sandpaper for polishing to make one end surface of the composite material test sample flat , the other end surface is polished to be an inclined surface consistent with the inclination angle θ of the inclined surface of the polishing device. After the preparation is completed, the composite material test sample is removed with glue cleaning agent, and put into acetone for degumming and cleaning. After the composite material test sample is aired After drying, use a vernier caliper to measure the thickness L of the thin end face of the composite material test sample;

[0062] S2. Use a cotton swab to apply a little liquid glue on both sides ...

Embodiment 3

[0072] In this embodiment 3, the composite material test sample 4 is a SiCf / Ti metal matrix composite material, the material of the polishing device 1 is stainless steel, and the material of the column platform 7 and the observation fixture 13 is aluminum alloy; The inclination angle of the inclined plane 2 of the device, the inclination angle of the rectangular chute 8 of the column base and the inclination angle θ of the rectangular chute 14 of the observation and fixing device are the same, all of which are 3 to 5°. The test method specifically includes the following steps:

[0073] (1), such as Figure 1-2 As shown, the SiCf / Ti metal matrix composite material is pasted in the horizontal rectangular groove 3 of the polishing device on the slope 2 of the polishing device with PT-02 adhesive, and the SiCf / Ti metal matrix composite material is polished to a surface of 3~ 5° slope, use acetone to clean and remove the polished SiCf / Ti metal matrix composite material, and use a v...

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Abstract

The invention discloses an auxiliary device for a composite material interface shear strength testing device, which includes a polishing device, a column stand and an observation fixing device, wherein: the top surface of the polishing device 1 is a polishing device with an inclination angle of θ The inclined surface of the device is provided with a horizontal rectangular groove of the polishing device along the inclination direction of the inclined surface of the polishing device. The direction is provided with a fiber push-out groove, and the top surface of the observation fixture is provided with a rectangular chute of the observation fixture with an inclination angle of θ; the clamps of the present invention are all designed with a rectangular groove, which is suitable for samples with different diameters and different cross-sectional shapes. The push-in and pull-out test can be used for interfacial shear strength testing of various composite materials, including ceramic matrix composites, metal matrix composites, and resin matrix composites.

Description

technical field [0001] The invention belongs to the technical field of material strength testing, and in particular relates to an auxiliary device and a method for a composite material interface shear strength testing device. Background technique [0002] Continuous fiber reinforced composite materials have the advantages of high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, etc., and are widely used in aerospace, shipbuilding, transportation and other industries that require high load-carrying capacity. Continuous fiber-reinforced composite materials are usually composed of fibers, matrix and interfacial phase between the two. The interfacial phase not only acts as a "bridge" connecting the fiber and the matrix, but also serves as a link for the transfer of external load from the matrix to the fiber, which determines the composite phase. The toughness of the material is good or bad. The interfacial bond str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N3/04G01N3/06
CPCG01N3/04G01N3/06G01N3/08G01N2203/0019G01N2203/0096G01N2203/0282G01N2203/0298G01N2203/0641G01N2203/0682
Inventor 宋迎东陈西辉丁俊杰牛序铭孙志刚靳彧
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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