Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for detecting interface bonding strength of composite materials

A technology of interface bonding strength and composite materials, applied in the direction of analysis materials, measuring devices, instruments, etc., can solve problems such as difficult comparative analysis, inaccurate results, and difficulty in satisfying experimental precise measurement and comparative research, and achieves convenient calculation and measured values. Accurate, directly readable results

Active Publication Date: 2017-05-17
YINBANG CLAD MATERIAL
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both the composite material 10 and the aluminum plate 20 to be brazed will be deformed during the tensile-shearing process, forming a bending angle at the fracture, and the sample will eventually be Figure 4 state shown
During the tension-shear process of single-sided brazing, the thin metal layer is subjected to the shear force along the bonding interface and the peeling force perpendicular to the bonding interface at the bonding interface. The interface bonding strength is composed of the shear force and the peeling force. The shear force The size and direction of the peeling force are related to the bending angle, and the bending angle is related to the thickness of the composite material, the thickness of the brazing layer and the bonding strength of the composite material interface. Therefore, among many influencing factors, the analysis of the shear force on the bonding interface Complicated calculations, many influencing factors and inaccurate results, it is difficult to conduct comparative analysis between materials with different thicknesses, and it is difficult to meet the requirements of precise experimental measurement and comparative research

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
  • Method for detecting interface bonding strength of composite materials
  • Method for detecting interface bonding strength of composite materials
  • Method for detecting interface bonding strength of composite materials

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0060] A method for detecting the interfacial bonding strength of brazed aluminum-steel composite materials, comprising the steps of:

[0061] 1. Prepare two pieces of ultra-thin composite layer aluminum-steel composite material, the thickness of the steel layer is 1.5mm, the thickness of the cladding aluminum layer is 0.085mm, two pieces of three-layer 4343 / 3003 / 4343 aluminum alloy composite material, the thickness is 2mm, and the thickness of the leather material is 4343 layers 0.15mm;

[0062] 2. Wash the aluminum layer of the aluminum-steel composite material and the 4343 layer of the 4343 / 3003 / 4343 aluminum alloy composite material with acid and alkali to remove oil, clean and dry;

[0063] 3. Remove the clad aluminum layer of two ultra-thin composite aluminum-steel composite materials to a certain width to form a clad aluminum layer fault belt, exposing the steel layer;

[0064] 4. The ultra-thin composite layer aluminum-steel composite material obtained in step three a...

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
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for detecting the interface bonding strength of composite materials. The method comprises the following steps: preparing two composite materials to be detected, an aluminum plate to be soldered and a filler; arranging the two composite materials to be detected, the aluminum plate to be soldered and the filler to form a three-layer structure: placing the aluminum plate to be soldered and the filler between the two composite materials in parallel, and allowing a part of the aluminum plate to be soldered to stretch out of the two composite materials; arranging the two composite materials in a thin metal layer facing manner; soldering the two composite materials, the aluminum plate to be soldered and the filler to obtain a soldered member; and drawing the soldered member until the soldered member is pulled and broken, recording the value of measured force, and calculating the thin metal layer and substrate interface bonding strength, wherein the thin metal layers of the composite materials, between the aluminum plate to be soldered and the filler, are removed. A sample produced through double side soldering is adopted to detect in order to make two forces applied to the thin metal layers be applied in the same plane and make the steel base and the aluminum alloy layer of the broken sample have no bended angles, so the measured value is accurate.

Description

technical field [0001] The invention relates to a method for detecting the interface bonding strength of a composite material, in particular to a method for measuring the interface bonding strength of an ultra-thin composite layer and other substrates. Background technique [0002] At present, aluminum-steel composite materials for brazed heat exchangers are composite materials made of bimetallic composites of aluminum and steel. Between aluminum and steel, the interfacial bonding strength of aluminum and steel is the key performance index for evaluating aluminum-steel composite materials. However, due to the very thin thickness of the cladding aluminum layer, conventional methods such as tension shearing, tearing, and compression shearing are used to evaluate the interfacial bonding strength. Layers will break and be difficult to evaluate. [0003] Glue bonding and single-sided brazing are commonly used in the prior art to quantitatively detect (that is, accurately detect)...

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 Applications(China)
IPC IPC(8): G01N19/04
Inventor 张小军周德敬李龙
Owner YINBANG CLAD MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products