Unlock instant, AI-driven research and patent intelligence for your innovation.

A device and method for measuring interfacial shear strength based on a nanoindenter

A technology of interface shear strength and nano-indentation instrument, which is applied in the direction of measuring device, using stable shear force to test material strength, strength characteristics, etc., to save manpower and material resources, avoid mechanical damage, and reduce pollution.

Active Publication Date: 2021-05-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a nano-indenter-based interface shear strength measuring device and testing method to solve the problems in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A device and method for measuring interfacial shear strength based on a nanoindenter
  • A device and method for measuring interfacial shear strength based on a nanoindenter
  • A device and method for measuring interfacial shear strength based on a nanoindenter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as Figure 1-7 As shown, a device for measuring interface shear strength based on a nanoindenter includes a column base 1 and a base 2, one end of the column base 1 is fixed on the base 2, and the other end of the column base 1 is provided on the end surface There are several grooves 4 for accommodating the fibers to be pushed out; several test samples are attached to the different grooves 4 on the end surface of the column base 1 by liquid glue;

[0044]Specifically, the cross-section of the column base 1 is arched, and the arch includes arc edges and straight edges. Parts of the several grooves 4 are arranged on the end faces of the column base 1 to diverge from the arc edges, and the plurality of grooves The other part of the 4 is evenly arranged perpendicular to the straight line, and each groove 4 is provided with a corresponding number. Different grooves 4 are set with different widths. The grooves 4 with different widths ensure that the device is suitable fo...

Embodiment 2

[0049] In this example, SiC f / Ti composites as an example, SiC f The fiber diameter of the / Ti composite material is about 100 μm, and the groove with a width of 0.4 mm is selected. For the circular cross section and the rectangular cross section, the semicircular cross section and the rectangular cross section of the column base are respectively selected to paste the test specimens, such as Figure 4 shown. Using the above measuring devices and methods to test SiC f / Ti composite interface shear strength, the process is as follows Figure 8 As shown, specifically:

[0050] A method for measuring interfacial shear strength based on a nanoindenter, comprising the following steps:

[0051] S1, prepare fiber push-in and pull-out test sample 5-13, the average thickness of test sample 5-13 is 0.15mm;

[0052] S2, according to the fiber diameter size of the test sample and the cross-sectional shape of the test sample, select the groove of the corresponding width and the sticki...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a device for measuring interface shear strength based on a nano-indentation instrument and a measurement method thereof, wherein the measuring device includes a column base 1 and a base 2, one end of the column base 1 is fixed on the base 2, and the column base 1 The end surface of the other end of 1 is provided with several grooves 4 for accommodating the fibers to be pushed out, and several test samples are attached to different grooves on the end surface of the column base by liquid glue; the measuring device provided by the present invention, once The installation can test multiple samples, and one sample can test the fibers in multiple grooves, avoiding the mechanical damage caused by the sample disassembly and re-fixing process, and reducing the damage to the sample and the workbench during the multiple gluing process pollution.

Description

technical field [0001] The invention belongs to the technical field of material testing, and in particular relates to a device and a testing method for measuring interface shear strength based on a nano-indenter. 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 composites are usually composed of fibers, a matrix, and an interfacial phase between the two. The interfacial phase not only acts as a "bridge" connecting the fibers and the matrix, but also serves as a link for the transfer of external loads from the matrix to the fibers. As an important parameter to characterize interface performance, interfacial shear strength has a significant impact on th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/24G01N3/42G01N3/02
CPCG01N3/02G01N3/24G01N3/42G01N2203/0003G01N2203/0025G01N2203/008
Inventor 宋迎东陈西辉陈壮壮牛序铭孙志刚卞杰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS