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Measuring system for elastic modulus of materials using interferometry to support beams

A material elastic modulus and measurement system technology, which is applied in the measurement of phase influence characteristics, measurement devices, and analysis materials, etc., can solve problems such as difficulty in real-time measurement, and achieve the effect of improving step precision, simple structure, and improving measurement level.

Active Publication Date: 2021-12-28
BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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Problems solved by technology

[0003] In order to overcome the difficulty of in-situ real-time measurement of the loading force and deformation displacement dimensions in the existing measurement, the technical problem to be solved by the material elastic modulus measurement system of the support beam using the interference method disclosed by the present invention is: the force value and displacement in metrology The quantitative value reproduction technology is applied to the measurement work to improve the measurement accuracy of the elastic modulus of the material, and has the advantages of good versatility and real-time measurement

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  • Measuring system for elastic modulus of materials using interferometry to support beams
  • Measuring system for elastic modulus of materials using interferometry to support beams

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Embodiment 1

[0017] Such as figure 1 As shown, the material elastic modulus measurement system using the interferometry support beam 12 disclosed in this embodiment is mainly composed of an optical measurement module 1 , a measurement demodulation module 2 , a data calculation module 3 , and a control processing module 4 .

[0018] The optical measurement module 1 includes a collimated light source 5, an optical measurement unit composed of related optical elements, a photoelectric conversion front-end circuit, and a data acquisition circuit. Through the optical measurement module 1, the displacement of the elastic deformation of the material of the support beam 12 can be converted into Electrical signals for digital processing. The measurement demodulation module 2 is used to perform logical comparison and arithmetic processing on the interferometric electrical signals acquired by the optical measurement module 1, calculate the basic displacement measurement data for measurement control a...

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Abstract

The invention discloses a material elastic modulus measurement system using an interference method to support beams, belonging to the technical field of photoelectric measurement. The invention is mainly composed of an optical measurement module, a measurement demodulation module, a data calculation module and a control processing module. The optical measurement module includes a collimated light source, a first dichroic prism, a reference modulator, an optical convergent, a second dichroic prism, a first photoelectric converter, a second photoelectric converter, and a phase modulator; the measurement demodulation module includes a knife-edge balance, Knife-edge supports, force loaders, support beams, support beam loading structures. The invention applies the force value and displacement value reproduction technology in metrology to the measurement work, can measure the loading force and the displacement size of the deformation in situ in real time, improves the measurement accuracy of the elastic modulus of the material, and has good versatility and Measure real-time advantages. The invention has low requirements on other physical properties of the material, can realize the measurement of the elastic modulus of the material by using the laboratory environment, and obtain the process data of the structure change.

Description

technical field [0001] The invention relates to a measuring system for the elastic modulus of a support beam material using an interference method, and belongs to the technical field of photoelectric measurement. Background technique [0002] The measurement of the elastic modulus of materials is widely used in the field of engineering technology. How to improve the measurement ability and accuracy of the elastic modulus of materials is of great significance for the design, development and use of materials in equipment. The elastic modulus measurement of the material is usually carried out on the material testing machine, which is generally carried out in the way of tension and compression. During the test process, the displacement sensor and the force sensor are used to jointly complete the relationship between the force value and the displacement during the material deformation process, which is currently used for this parameter measurement. Due to the constraints of the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/45G01B11/16
CPCG01N21/45G01B11/16G01N2021/458
Inventor 朱振宇段小艳李强
Owner BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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