Material elasticity modulus measurement system applying interferometry support beam
A material elastic modulus and measurement system technology, which is applied in the direction of phase influence characteristic measurement, measurement device, and material analysis, can solve problems such as real-time measurement difficulties, achieve the effect of improving stepping precision, improving measurement level, and simple structure
Active Publication Date: 2019-08-16
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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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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The invention discloses a material elasticity modulus measurement system applying an interferometry support beam, and belongs to the technical field of the photoelectric measurement. The measurement system is mainly composed of an optical measurement module, a measurement demodulation module, a data computation module and a control processing module; the optical measurement module comprises a collimation light source, a first beam splitter prism, a reference modulator, an optical convergence device, a second beam splitter prism, a first photoelectric converter, a second photoelectric converter, and a phase modulator; the measurement demodulation module comprises a knife edge balance, a knife edge support, a force loading device, a support beam, and a support beam loading structure. A forcevalue and displacement magnitude reproduction technology in the metrology is applied to the measurement work, the loading force and the displacement size in-situ of the deformation can be measured inreal time, the material elastic modulus measurement accuracy is improved, and the system has good universality and measurement instantaneity. The measurement system has low requirement on other physical attributes of the material, the measurement of the material elastic modulus can be realized by utilizing laboratory environment, and the structure change process data can be acquired.
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...
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Login to View More 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