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Portable stress detection device

A stress detection, portable technology, applied in the direction of measuring device, magnetic property measurement, measurement of the change force of material magnetic properties caused by applied stress, etc., can solve problems such as defects, fractures, cracks, etc.

Inactive Publication Date: 2020-01-24
NORTHWEST A & F UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Ferromagnetic materials have been widely used in various fields such as transportation, daily life, medical and health care, national defense, scientific research, etc., and modern industrial production is developing towards high speed, high temperature, and high load. Ferromagnetic materials due to load stress, temperature stress , residual stress and creep relaxation and other factors, resulting in defects, even cracks and fractures, resulting in serious consequences

Method used

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  • Portable stress detection device

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Embodiment Construction

[0010] A portable stress detection device is mainly composed of an excitation coil 1, a yoke 2, a receiving coil 3, a power amplifier circuit 4, a signal generation circuit 5, a DSP module 6, a RAM human-computer interaction module 7, a signal conditioning circuit 8 and an acquisition circuit 9, characterized in that: the excitation coil 1 is connected to the yoke 2, the yoke 2 is connected to the receiving coil 3, the excitation coil 1 is connected to the power amplifier circuit 4, the power amplifier circuit 4 is connected to the signal generation circuit 5 The signal generation circuit 5 is connected with the DSP module 6, the DSP module 6 is connected with the RAM human-computer interaction module 7, the signal conditioning circuit 8 is connected with the receiving coil 3, the acquisition circuit 9 is connected with the signal conditioning circuit 8, and the acquisition circuit 9 is connected with the signal conditioning circuit 8. Circuit 9 is provided at the input of DSP ...

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Abstract

The invention provides a portable stress detection device, and belongs to the field of stress detection technology. The portable stress detection device is mainly composed of an excitation coil, a magnet yoke, a receiving coil, a power amplifier circuit, a signal generating circuit, a DSP module signal conditioning circuit and a collection circuit, and is characterized in that: the excitation coilis connected with the magnet yoke, the magnet yoke is connected with the receiving coil, the excitation coil is connected with the power amplifier circuit, the signal generating circuit is connectedwith the DSP module, the signal conditioning circuit is connected with the receiving coil, and the collection circuit is arranged at an input end of the DSP module. The portable stress detection device provided by the invention utilizes the relationship between the Barkhausen noise and the stress of a ferromagnetic material and realizes the stress detection of the ferromagnetic material, and utilizes DSP digital processing, thereby being convenient, fast, accurate and effective.

Description

technical field [0001] The invention relates to a portable stress detection device, which belongs to the technical field of stress detection. Background technique [0002] Ferromagnetic materials have been widely used in various fields such as transportation, daily life, medical and health care, national defense, scientific research, etc., and modern industrial production is developing towards high speed, high temperature, and high load. Ferromagnetic materials due to load stress, temperature stress , residual stress and creep relaxation and other factors, resulting in defects, even cracks and fractures, resulting in serious consequences. The invention develops a portable stress detection device. Contents of the invention [0003] Aiming at the above-mentioned deficiencies, the present invention provides a portable stress detection device. [0004] The present invention is achieved through the following technical solutions: a portable stress detection device, which is ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/12G01N27/72G01L1/12
CPCG01L1/12G01N27/725G01R33/1292
Inventor 马驰朱悦张鹏
Owner NORTHWEST A & F UNIV
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