Plane stress determination method and device based on magnetic Barkhausen noise

A technology of plane stress and determination method, applied in measuring devices, measuring force, force/torque/work measuring instruments, etc., can solve the problems of low detection efficiency, inconvenient portability, large equipment, etc., and achieve great engineering application value and wide application. Foreground effect

Active Publication Date: 2020-11-20
ZHONG TE JIAN TECH & DEV BEIJING CO LTD
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Problems solved by technology

X-ray diffraction method is currently the most widely used stress detection method in engineering sites, and it is also a relatively accurate and reliable method for on-site measurement. However, X-rays are harmful to the human body and the equipment is relatively large, inconvenient to carry, and time-consuming to install. Detect the stress of a point, the detection efficiency is low

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  • Plane stress determination method and device based on magnetic Barkhausen noise
  • Plane stress determination method and device based on magnetic Barkhausen noise
  • Plane stress determination method and device based on magnetic Barkhausen noise

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Embodiment Construction

[0091] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0092] In the prior art, the plane stress is measured in a certain measurement direction based on the circumferential magnetic Barkhausen noise. The measurement result obtained by this method is only the stress component of the stress on the material in this direction. If the stress is directly measured The component will be greatly deviated or ev...

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Abstract

The invention provides a plane stress determination method and device based on magnetic Barkhausen noise. The plane stress determination method based on the magnetic Barkhausen noise comprises the steps that circumferential magnetic Barkhausen noise of a measurement point is measured; and a plane stress state and a stress tensor of the measurement point are determined according to the circumferential magnetic Barkhausen noise and a pre-generated relation model of a magnetic Barkhausen noise characteristic value and plane stress. The principal stress and the principal direction of the measurement point can be accurately calculated by using the circumferential magnetic Barkhausen noise, and the positive stress of the measurement point in each direction can also be obtained.

Description

technical field [0001] The invention relates to the technical field of material stress calculation, in particular to the technical field of residual stress detection and evaluation in the material manufacturing process, and in particular to a method and device for determining plane stress based on magnetic Barkhausen noise. Background technique [0002] In the field of existing engineering manufacturing technology, the stresses of concern mainly include residual stress caused by manufacturing, stress generated by external loads during service, and stress concentration caused by defects. Accurate measurement of the above aspects is one of the important contents of engineering inspection . Residual stress in the manufacturing process is often produced by material forging, cutting, welding and other processing. Its existence is easy to deform the parts and affect the assembly accuracy and the performance of the whole machine. It will also lead to accelerated corrosion and creep...

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Application Information

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IPC IPC(8): G01L1/25G01L5/00
CPCG01L1/255G01L5/0047
Inventor 郑阳
Owner ZHONG TE JIAN TECH & DEV BEIJING CO LTD
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