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Deformation measurement device

A measurement device and deformation technology, applied in the field of measurement, can solve the problems of complex composition and impracticality of composite materials, and achieve the effect of simple and convenient data processing, guarantee of real state, and high measurement accuracy

Inactive Publication Date: 2018-03-30
李家兵
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the emergence of composite materials and the rise of dynamic mechanics research, traditional methods can no longer meet the needs of measurement. The composition of composite materials is complex, and it is impossible to reverse the lateral deformation through Poisson's ratio. This approach also becomes impractical for measurement tools

Method used

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Embodiment Construction

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0019] The measurement method of the invention converts the mechanical deformation into the change of the light intensity of the light spot projected on the photodetector, and the photodetector converts the change of the light intensity into an electrical signal that can be directly measured.

[0020] Such as figure 1 As shown, a deformation measurement device includes a laser 1, an optical filter 2, an object mounting frame 9, a focusing lens 3, a photodetector 4 and an oscilloscope 5 placed in sequence, the laser 1, the focusing lens 3 and the photoelectric The geometric center of the detector 4 remains on an axis, and the main planes are all parallel to each other, and the photodetector 4 is electrically connecte...

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Abstract

The invention relates to a deformation measurement device, which comprises a laser, an optical filter, an object mounting frame, a focusing lens, a photodetector and an oscilloscope arranged in sequence, and the geometric centers of the laser, the focusing lens and the photodetector are kept on a straight line On the axis, and the main planes are all parallel to each other, the photodetector is electrically connected to the oscilloscope; the laser, object mounting frame, optical filter, focusing lens and photodetector are all installed on the slide rail of the workbench; A mounting buckle is arranged on the object mounting frame. The invention realizes the measurement of the lateral deformation of the material. When measuring the deformation of the object, it is not necessary to paste the measuring device on the object to be measured, only by laser irradiation and oscilloscope measurement. The invention has high measurement accuracy and can capture any small lateral deformation produced by the test piece.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a deformation measuring device. Background technique [0002] In the process of studying the loading and deformation of materials, people found that when the material is loaded axially, while the deformation occurs in the axial direction, the material will expand or shrink in the transverse direction. People define the deformation in the transverse direction as is a Poisson deformation. Lateral deformation is an important performance parameter to characterize the mechanical properties of materials, so the measurement of lateral deformation is also an important part of exploring the mechanical response of materials. For the measurement of transverse deformation, there are two most traditional methods: one is to measure the longitudinal strain of the specimen. For materials with uniform structure and single composition, there is a fixed Poisson’s ratio, and the measured longit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16G01N3/06
CPCG01B11/16G01N3/068G01N2203/0075G01N2203/0682
Inventor 李家兵
Owner 李家兵
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