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Method for determining excitation frequency of ultrasonic vibration ageing

A technology of excitation frequency and ultrasonic vibration, which is applied in the field of determining the aging excitation frequency of ultrasonic vibration, can solve problems such as the inability to determine the aging excitation frequency of ultrasonic vibration, and achieve the effects of short time consumption, avoiding damage, and simple process

Inactive Publication Date: 2018-05-08
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology

[0005] In order to solve the problem that the traditional frequency sweeping method cannot determine the aging excitation frequency of ultrasonic vibration, the present invention proposes a method for determining the aging excitation frequency of ultrasonic vibration

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  • Method for determining excitation frequency of ultrasonic vibration ageing

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Embodiment Construction

[0018] With reference to the accompanying drawings, the present invention is further described:

[0019] The method for determining the excitation frequency of ultrasonic vibration aging is characterized by: testing and analyzing the average grain size of the aging workpiece; determining the propagation speed of ultrasonic waves in the aging workpiece; determining the resonant frequency of the mesoscopic scale of the crystal grain; Excitation frequency.

[0020] The described method for determining the ultrasonic vibration aging excitation frequency is characterized in that: the average grain size of the aging workpiece obtained by the test analysis is used as the wavelength λ of the ultrasonic wave, according to the relationship between the ultrasonic wavelength λ and the ultrasonic wave propagation speed v= λf, the resonant frequency f of the mesoscopic scale of the grain is calculated.

[0021] The method for determining the excitation frequency of ultrasonic vibration agi...

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Abstract

A method for determining the excitation frequency of ultrasonic vibration ageing is characterized in that the average crystal grain size of an ageing workpiece is obtained through the test and analysis; the propagation speed of ultrasonic waves in the ageing workpiece is determined; the resonance frequency of the mesoscopic scale of crystal grains is determined; and the excitation frequency of theultrasonic vibration ageing is determined. According to the method for determining the excitation frequency of ultrasonic vibration ageing, the determined excitation frequency of the ultrasonic vibration ageing is obtained through deduction and analysis from the resonance angle of the mesoscopic scale of the crystal grains, so that ultrasonic vibration ageing treatment is conducted on the workpiece at the determined excitation frequency, the ideal ultrasonic vibration ageing effect can be obtained, and meanwhile the method for determining the excitation frequency of ultrasonic vibration ageing has the beneficial effects that the process is simple, the consumed time is short, and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of vibration aging, in particular to a method for determining the excitation frequency of ultrasonic vibration aging. technical background [0002] Vibration aging technology is to make the sum of the residual stress inside the workpiece and the additional vibration stress exceed the yield limit of the material through vibration, and a small amount of plastic deformation occurs inside the material, thereby reducing the residual stress inside the material. Vibration aging technology has the characteristics of good treatment effect, short treatment time, low environmental pollution, low energy consumption, and easy on-site operation. technical possibilities. Therefore, the research on vibration aging process has very important engineering application value, which can provide technical support for the popularization and application of vibration aging technology. [0003] The process of vibration aging directl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D10/00
CPCC21D10/00
Inventor 顾邦平周慧胡雄严小兰
Owner SHANGHAI MARITIME UNIVERSITY
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