Laser ultrasonic measurement method and system for elastic constant of metal additive manufacturing part

A metal additive and laser ultrasonic technology, applied in the direction of measuring devices, using sound waves/ultrasonic waves/infrasonic waves to analyze solids, using sound waves/ultrasonic waves/infrasonic waves for material analysis, etc., can solve problems such as large errors in elastic constants, and achieve large errors. Larger, the effect of improving the measurement accuracy

Active Publication Date: 2021-11-05
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0006] This application provides a laser ultrasonic measurement method and system for the elastic constant of metal additive manufacturing parts, which is used to solve the technical problem of large errors in measuring the elastic constant of metal additive manufacturing parts

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  • Laser ultrasonic measurement method and system for elastic constant of metal additive manufacturing part
  • Laser ultrasonic measurement method and system for elastic constant of metal additive manufacturing part
  • Laser ultrasonic measurement method and system for elastic constant of metal additive manufacturing part

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Embodiment Construction

[0052] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0053] The invention provides a laser ultrasonic measurement method for the elastic constant of a metal additive manufacturing part, which is applied to a metal additive manufacturing part. The metal additive manufacturing part is provided with a first surface and a second surface, and the first surface and the second surface are Adjacent vertical relationship, at ...

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Abstract

The invention discloses a laser ultrasonic measurement method and system for the elastic constant of a metal additive manufacturing part, and the method comprises the steps: transmitting pulse laser to the surfaces of different elastic structures of the metal additive manufacturing part to generate ultrasonic waves, and obtaining an ultrasonic signal through detection laser to obtain two longitudinal waves and three transverse waves; calculating two corresponding longitudinal wave velocities and three transverse wave velocities, and calculating an elastic constant value of the metal additive manufacturing part based on a solid mechanics theoretical formula. Therefore, non-contact measurement and nondestructive measurement are achieved, and meanwhile, due to the fact that the ultrasonic waves act on the interiors of different microstructures to obtain different wave velocities, the measurement accuracy of the elastic constant of the metal additive manufacturing part is improved.

Description

technical field [0001] The present application relates to the technical field of ultrasonic measurement, in particular to a laser ultrasonic measurement method and system for elastic constants of metal additive manufacturing parts. Background technique [0002] The material elastic constant is the quantity that characterizes the elasticity of the material, specifically, it is the generalized elastic tensor that links the relationship between stress and strain in an anisotropic medium, and has 21 independent constants. When measured in two orthogonal directions, it is reduced to 5 independent constants in a transversely isotropic medium with the same properties. An isotropic medium (having the same properties when measured in any direction) has only 2 independent elastic constants. There are 13 independent constants for monosymmetric materials and 9 independent constants for orthotropic materials. [0003] The traditional methods for measuring the elastic constant of materi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/22
CPCG01N29/04G01N29/223G01N2291/02827Y02P10/25
Inventor 邹大鹏林奕钦叶国良张永康纪轩荣
Owner GUANGDONG UNIV OF TECH
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