Novel surface energy testing method and system

Abstract

The invention relates to a novel surface energy testing method and system. The testing method comprises the steps of S11, placing a plurality of cushion blocks with a certain thickness between a tested structure and a deformation material; S12, applying an electric signal, a magnetic signal, a thermal signal or an optical signal to the deformation material, so that the deformation material deforms, and crack propagation occurs; s13, acquiring a crack image; s14, processing the collected crack image, and determining the crack size; and S15, calculating the surface energy of the measured structure according to the crack size and the fracture mechanical model. According to the testing method disclosed by the invention, even if the tested surface is non-planar, a good bonding phenomenon can still occur between interfaces, and crack propagation can occur by reasonably placing the cushion block and loading voltage; the voltage value corresponding to the loading process can be accurately recorded, and the tedious recording of the debonding process and the stripping force is avoided; the limitation of factors such as surface roughness on the existing test mode is successfully avoided, the test accuracy is high, and the operation is convenient.

Description

Technical field [0001] The present invention relates to the field of interface energy measurement, and more particularly to a new surface energy testing method and system. Background technique [0002] The so-called interface, usually refers to the solid-liquid interface, solid-air interface, and gas-liquid interface. Of course, the composite interface, surface plating, etc. can also be considered solid-insulated interface. Wherein, the solid-air interface is also referred to as a solid surface. The understanding of these interfaces (surface) has always been one of the scientific research objects. The results produced have deeply influenced our daily lives. Such as solid-immoral research is extremely important in welding, space protection, composite intensity and other fields. [0003] In the microscopic field, Van der Waals presented in 1873, there is a potential effect in neutral atoms, namely Van Dehua. Van Dehua's role is a typical short-range force, for example, two smooth m...

AI Technical Summary

Problems solved by technology

The main problem with this type of testing is that it is difficult to exclude the effect of plastic deformation on the separation stiffness

Although some scholars have proposed that slowing down the loading rate can remove the influence of plastic deformation, this view has not been widely recognized by the academic community.

It should be noted that when the peeling method is used to test the interfacial energy of soft materials, the cohesive energy of the material needs to be greater than the viscous energy. Therefore, this test method is generally not applicable to polymers with small molecules.

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