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Estimation Method of Yield Strength of Ferromagnetic Materials Based on Electromagnetic Ultrasonic

A ferromagnetic material, electromagnetic ultrasonic technology, applied in the direction of material analysis, material analysis, material magnetic variables, etc. through electromagnetic means, can solve the problems of material damage, resource waste, affecting material reuse, etc., and achieve a high detection pass rate Effect

Active Publication Date: 2021-05-07
江苏金宇智能检测系统有限公司
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  • Description
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Problems solved by technology

The performance of a metal material determines its range of use and service life. Currently, the testing of the mechanical properties of the material is carried out by offline stretching. This method will damage the material, affect its reuse, and cause resource waste

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  • Estimation Method of Yield Strength of Ferromagnetic Materials Based on Electromagnetic Ultrasonic
  • Estimation Method of Yield Strength of Ferromagnetic Materials Based on Electromagnetic Ultrasonic
  • Estimation Method of Yield Strength of Ferromagnetic Materials Based on Electromagnetic Ultrasonic

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Embodiment Construction

[0034] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0035] This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

[0036]Ferromagnetic substances have a crystal-like structure. Between adjacent atoms, due to the spin of electrons, there is an elemental magnetic moment, and there is an interaction force between the elemental magnetic moments, which drives the adjacent elemental magnetic moments to be arranged in parallel in the same direction, forming a magnetic domain. When there is no external magnetic field, each magnetic domain is balanced with each other, and the total magnetization of the mat...

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Abstract

The invention discloses a method for estimating the yield strength of ferromagnetic materials by electromagnetic ultrasound based on the magnetostrictive effect. Taking N ferromagnetic plates with known material yield strengths, by setting electromagnetic ultrasonic transmitting ends and electromagnetic At the ultrasonic receiving end, measure the characteristic value of the magnetostrictive curve of each ferromagnetic plate, and then establish a BP neural network model, taking the characteristic value of the magnetostrictive curve of the ferromagnetic plate and the thickness of the ferromagnetic plate as input, the iron The material yield strength of the magnetic plate is taken as an output, and the BP neural network model is trained, and finally the material yield strength of the ferromagnetic material is estimated through the trained BP neural network model. The invention realizes the non-destructive quantitative detection of the mechanical characteristic of material yield strength.

Description

technical field [0001] The invention relates to the technical field of electromagnetic nondestructive testing, in particular to a method for estimating the yield strength of ferromagnetic materials based on electromagnetic ultrasound. Background technique [0002] Ferromagnetic materials have good adaptability in terms of mechanical properties, so they are widely used as key materials in railway, transportation, energy, construction, aerospace, military and chemical industries. [0003] However, a wide variety of ferromagnetic materials will have great differences in mechanical physical and chemical properties due to different processing techniques, different carbon contents, metallographic structures and different doped alloy composition materials. Moreover, the performance of ferromagnetic materials on conditions such as load, fatigue, corrosion, and service temperature will vary greatly under different application environments. Therefore, it is necessary to obtain materi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/72G01N27/82
CPCG01N27/725G01N27/82
Inventor 韩笑姚恩涛王平刘瑞张杰朱振邦周子钦
Owner 江苏金宇智能检测系统有限公司
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