A quasi-static full-field deformation measurement device and method for a slender member

A technology of slender components and measurement methods, applied in the direction of measuring devices, using optical devices, and using stable tension/pressure to test the strength of materials, etc., can solve the problems of quasi-static full-range deformation measurement of slender components and effective resolution in the width direction Reduce the problem of cumbersome image acquisition steps, etc., to achieve the effect of simple structure, improved measurement efficiency, and easy operation
CN110146029BActive Publication Date: 2021-04-13BEIJING FORESTRY UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING FORESTRY UNIVERSITY
Publication Date
2021-04-13

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Abstract

The invention discloses a quasi-static full-field deformation measuring device and method for a slender member. The device includes a camera mechanism (1) and a drive mechanism (2), wherein the camera mechanism (1) and the drive mechanism (2) are both Arranged in parallel with the elongated member (3), the camera mechanism (1) translates under the action of the driving mechanism (2) to collect images of the elongated member (3) at multiple positions, and then obtain the elongated member ( 3) panoramic image; the method includes collecting panoramic images of the elongated member before and after deformation, and comparing and analyzing to obtain the strain field of the elongated member. The measuring device of the invention has simple structure and low cost, and the method is easy to operate, has high image precision and high measuring efficiency.
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Description

technical field

[0001] The invention relates to the technical field of image acquisition of slender members, in particular to a device and method for quasi-static full-field deformation measurement of slender members. Background technique

[0002] Digital image correlation (digital image correlation, DIC) technology was originally independently proposed by Peters of the University of South Carolina in the United States and Yamaguchi of Japan in the early 1980s. Non-contact optical method. DIC technology first uses digital imaging equipment (optical imaging, electronic imaging and scanning probe imaging equipment, etc.) Quantitatively calculate the full-field displacement and full-field strain of the measured object.

[0003] In the actual engineering application process, in many cases, the size of a single direction of the monitored object is large, such as beams, columns and other slender members in civil engineering. When using DIC technology for strain analysis, if only...

Claims

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