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Method for measuring elastic modulus and Poisson's ratio of all parts in material by ultrasonic waves

An elastic modulus and ultrasonic technology, which is applied in the direction of using sonic/ultrasonic/infrasonic waves to analyze solids, analyze materials, and process the response signals of detection. And other issues

Active Publication Date: 2019-09-20
北京领示科技有限公司
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Problems solved by technology

[0003] But at present, the measurement of the elastic modulus is relatively complicated, and it is difficult to measure the elastic modulus at any point in the internal space of the material, which brings a lot of inconvenience to the evaluation of material properties

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  • Method for measuring elastic modulus and Poisson's ratio of all parts in material by ultrasonic waves
  • Method for measuring elastic modulus and Poisson's ratio of all parts in material by ultrasonic waves
  • Method for measuring elastic modulus and Poisson's ratio of all parts in material by ultrasonic waves

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Embodiment Construction

[0062] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0063] Such as figure 1 As shown, a method for ultrasonically measuring elastic modulus and Poisson's ratio in various parts of the material, comprising the following steps:

[0064] S1. Use ultrasonic non-destructive testing to scan the material to be tested, measure the one-way propagation time of ultrasonic waves in the material, and give the one-way propagation time of ultrasonic waves in the material and the longitudinal wave velocity V L and shear wave velocity V T Relationship;

[0065] S2. The shear wave velocity V T In terms of shear modulus, the longitudinal wave velocity V L Expressed by shear modulus and Poisson's ratio;

[0066] S3. Determine the shear modulus of each position inside the material;

[0067] S4. Determine t...

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Abstract

The invention discloses a method for measuring elastic modulus and Poisson's ratio of all parts in a material by ultrasonic waves. The method comprises the following steps of: S1, performing scanning and checking for a material to be detected by utilizing ultrasonic nondestructive testing, performing measuring to obtain one-way propagation time of ultrasonic waves in the material, and giving out the relation between the one-way propagation time of the ultrasonic waves in the material and the longitudinal wave velocity VL and the transverse wave velocity VT; S2, expressing the transverse wave velocity VT by using shear modulus, and expressing the longitudinal wave velocity VL by using shear modulus and Poisson's ratio; S3, determining the shear modulus of each position in the material; S4, determining the Poisson's ratio of each position in the material; and S5, calculating the tensile modulus of each position in the material. The method is based on ultrasonic nondestructive testing, can measure and characterize the elastic modulus and the Poisson's ratio of any point position in the inner space of the material, and can evaluate the non-uniformity of the performance of each position in the material.

Description

technical field [0001] The invention relates to ultrasonic non-destructive testing, in particular to a method for ultrasonically measuring the elastic modulus and Poisson's ratio of various parts inside a material. Background technique [0002] The elastic modulus can be regarded as an index to measure the difficulty of elastic deformation of the material. The larger the value, the greater the stress that causes the material to undergo a certain elastic deformation, that is, the greater the stiffness of the material, that is, under a certain stress, the elastic The deformation is smaller. One of the most important and characteristic mechanical properties of elastic materials. [0003] But at present, the measurement of the elastic modulus is relatively complicated, and it is difficult to measure the elastic modulus at any point in the internal space of the material, which brings a lot of inconvenience to the evaluation of the material performance. Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/07G01N29/44
CPCG01N29/07G01N29/44G01N2291/011G01N2291/023G01N2291/02827
Inventor 关雪飞
Owner 北京领示科技有限公司
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