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Vibration treatment method for repairing copper thin film test piece with fatigue damage

A technology of vibration treatment and fatigue damage, which is applied in the field of vibration treatment for repairing fatigue damage of copper thin film specimens, can solve problems such as fatigue damage repair of copper thin film materials, and achieve the effect of improving microstructure, practical method, and repairing fatigue damage

Inactive Publication Date: 2016-08-17
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problem of copper film material fatigue damage repair

Method used

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  • Vibration treatment method for repairing copper thin film test piece with fatigue damage
  • Vibration treatment method for repairing copper thin film test piece with fatigue damage
  • Vibration treatment method for repairing copper thin film test piece with fatigue damage

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, the method of the present invention is further elaborated by giving an example, please refer to Figure 1 to Figure 4 . A pulsation cycle with a maximum principal stress of 160MPa is applied to the specimen until the cycle reaches 0.5 times the original life, and then it is repaired by vibration, and then a pulsation cycle with a maximum principal stress of 160MPa is applied to it until the specimen breaks. A vibration treatment method for repairing copper thin film fatigue damage, the steps of which are:

[0028] A) Vibration processing and repairing device is provided, and described vibration processing and repairing device comprises modal exciter 1, power amplifier 2, signal generator 3 and specimen isolating device 4; Described signal generator 3 and power amplifier 2 are connected; The power amplifier 2 is connected to the modal exciter 1; the signal generator and the power amplifier are connected to the power supply...

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Abstract

The invention provides a vibration treatment method for repairing a copper thin film test piece with fatigue damage, and relates to the technical field of machine manufacturing and vibration treatment application. A mode vibration exciter, a power amplifier and a signal generator are connected in sequence. The copper thin film is put in a test piece separation device in the mode vibration exciter; power amplification, sine waves, frequency and voltage output are set; the test piece is made in a free vibration state; after a while, the signal generator and the power amplifier are switched off in sequence, and the copper thin film test piece is taken out of the test piece separation device. According to the vibration treatment method for repairing the copper thin film test piece with fatigue damage, a stress field is formed in the material through the influence on the vibration mode through force and frequency applied to the material, the fatigue damage of the copper thin film test piece is effectively eliminated, and the fatigue life of the copper thin film test piece can be greatly prolonged. Meanwhile, the vibration treatment method in simple in process, convenient to implement, high in practicability, remarkable in effect, and great in engineering practical potential.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing and vibration treatment application, in particular to a vibration treatment method for repairing fatigue damage of a copper thin film test piece. Background technique [0002] According to statistics, more than 80% of the fracture accidents of mechanical parts are caused by metal fatigue, which not only causes economic losses, but also poses great safety hazards. In other words, all mechanical parts and engineering components subjected to high levels of cyclic stress are likely to be damaged by fatigue. Polycrystalline copper thin film materials are widely used in MEMS (micro-electro-mechanical system) components. However, the long-term service of MEMS components is restricted because the copper film is often damaged due to the action of cyclic alternating loads during use. Therefore, how to improve the service life of the copper film plays a vital role in the fatigue life of ME...

Claims

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Application Information

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IPC IPC(8): C22F3/00
CPCC22F3/00
Inventor 尚德广刘亚楠张海萌张子骁吕帅
Owner BEIJING UNIV OF TECH
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