Method, device and system for measuring material mechanical property information

Abstract

The invention discloses a method, device and system for measuring material mechanical property information. The method includes the steps that excitation signals of different frequencies are loaded toa material to be measured; motion information of surface wave signals or interface wave signals of the material to be measured under different frequency excitation signals are measured, wherein the motion information includes wave velocity and dispersion information, and the surface wave signals or the interface wave signals are ultrasonic signals of the surface or internal interface of the material to be measured and collected by at least two ultrasonic transducers; the mechanical property information of the material to be measured is determined according to the motion information of the surface wave signals or the interface wave signals of the material to be measured under different frequency excitation signals; and the mechanical property information of the material to be measured is output. Based on the fact that the ultrasonic transducers measure the motion information of surface waves or interface waves of the material, the inversion of the mechanical property information of a thin film wrapping material or other wrapping materials or materials in a special environment is realized.

Description

technical field [0001] The invention relates to the field of material mechanical property measurement, in particular to a method, device and system for measuring material mechanical property information. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] As we all know, when a material is excited by external mechanics, there will be surface wave or interface wave signal propagation on the surface of the material and the interface of each phase inside the material. The propagation properties of surface wave and interface wave signals (such as wave velocity and dispersion characteristics) are closely related to the mechanical properties of the material itself. The signal signal is collected, and the collected signal is processed with a reasonable algorithm to invert the mechanica...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the existing technologies use the piezoelectric sensor to collect the surface wave signal of the material to be tested, and then invert the mechanical property information of the material to be tested according to the surface wave signal. The direct contact of the material is not suitable for some materials or biological materials immersed in special liquid environments (for example, livers for transplantation, etc.); The material to be tested is a material in which the body to be tested is wrapped by other materials (for example, muscle is wrapped by its surface skin, the ultrasonic phantom is wrapped by a surface coating, etc.), the layered structure of the material is unknown, and it is difficult to reflect the surface wave signal collected. Perform mechanical property information of the material to be tested

[0005] For the above problems, there is no solution yet

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