Apparatus for measuring plane stress of anisotropic material

A technology of plane stress and anisotropy, applied in the direction of measuring devices, measuring forces, instruments, etc., can solve the problems of low measurement accuracy and achieve the effects of high measurement efficiency, high precision, and easy operation

Active Publication Date: 2017-06-30
集呈(三亚)科技有限公司
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Problems solved by technology

[0004] The present invention aims to solve the problem of low measurement accuracy of existing stress detection methods. Based on the principle of the anisotropic three-way method, a critical refraction longitudinal wave is used as the detection wave source, supplemented by modules such as a signal generator and a digital oscilloscope, and provides a measurement Anisotropic Material Plane Stress Apparatus

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  • Apparatus for measuring plane stress of anisotropic material
  • Apparatus for measuring plane stress of anisotropic material
  • Apparatus for measuring plane stress of anisotropic material

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specific Embodiment approach 1

[0036] Specific implementation mode one: combine figure 1 Describe this embodiment, the device for measuring the plane stress of anisotropic materials in this embodiment includes an ultrasonic transducer group, an ultrasonic oblique incidence wedge 2, a signal generator 3, a digital oscilloscope 4 and an analysis and processing software 5;

[0037] The shape of the ultrasonic oblique incidence wedge 2 is a regular octagon, and the oblique incidence angle is 34°.

[0038] The ultrasonic transducer group includes a first ultrasonic longitudinal wave excitation probe 11, a second ultrasonic longitudinal wave excitation probe 12, a third ultrasonic longitudinal wave excitation probe 13, a first ultrasonic longitudinal wave receiving probe 14, a second ultrasonic longitudinal wave receiving probe 15 and a third ultrasonic longitudinal wave receiving probe 15. Ultrasonic longitudinal wave receiving probe 16, six probes are fixedly connected with ultrasonic oblique incidence wedge 2,...

specific Embodiment approach 2

[0043] Embodiment 2: This embodiment differs from Embodiment 1 in that: the ultrasonic oblique incidence wedge 2 is made of polytetrafluoroethylene. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0044] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the center of the ultrasonic oblique incidence wedge 2 is embedded with a NdFeB magnet 7 . Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a material plane stress detection device, in particular, an apparatus for measuring the plane stress of an anisotropic material. The objective of the invention is to solve the problem of low measurement accuracy of an existing stress detection method. The device includes an ultrasonic transducer group, an ultrasonic oblique incidence wedge, a signal generator, a digital oscilloscope and analysis processing software; a first ultrasonic longitudinal wave excitation probe, a second ultrasonic longitudinal wave excitation probe and a third ultrasonic longitudinal wave excitation probe are all connected with the signal generator; a first ultrasonic longitudinal wave receiving probe, a second ultrasonic longitudinal wave receiving probe and a third ultrasonic longitudinal wave receiving probe are all connected with the digital oscilloscope; the signal generator is connected with the digital oscilloscope; and the analysis processing software is connected with the digital oscilloscope. According to the device, critical refraction longitudinal waves are adopted as a detection wave source based on an anisotropic three-way method. The device has the advantages of high measurement efficiency and simple operation. The device can be widely applied to the detection and analysis of plane stress in anisotropic materials in aerospace, weapon manufacturing and vehicle fields and so on.

Description

technical field [0001] The invention relates to a material plane stress detection device. Background technique [0002] In recent years, with the development and progress of material science, a large number of advanced materials have been widely used in various fields. However, advanced materials are often different from traditional metal materials, and most of them are composed of different components, which makes the materials exhibit anisotropic properties. [0003] The traditional ultrasonic method for stress detection mainly adopts the method of sending and receiving or spontaneously sending and receiving. The effect of material anisotropy on ultrasonic propagation, so the measurement accuracy is not high and the convincing power is not strong. Contents of the invention [0004] The present invention is to solve the problem of low measurement accuracy of existing stress detection methods. Based on the principle of anisotropic three-way method, critical refraction lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/25
CPCG01L1/255
Inventor 张宇民王伟周玉锋姚泰董善亮陈栋康康周小琳王道畅吕汉雄
Owner 集呈(三亚)科技有限公司
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