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Equivalent target plate deformation testing device and method based on laser scanning

A deformation test and laser scanning technology, which is applied to measurement devices, optical devices, instruments, etc., can solve the problems of cumbersome test steps, low test efficiency, and difficulty in obtaining data and information, and achieve the effect of solving cumbersome test steps.

Pending Publication Date: 2021-07-02
XIAN TECHNOLOGICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an equivalent target plate deformation testing device and testing method based on laser scanning. Using laser scanning technology combined with data analysis means, the deformation information of the equivalent target plate can be obtained quickly, accurately and intuitively, solving the problem of The current test method has cumbersome test steps, obvious influence of subjective factors, difficulty in obtaining data information, etc., with heavy operational workload and low test efficiency.

Method used

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  • Equivalent target plate deformation testing device and method based on laser scanning
  • Equivalent target plate deformation testing device and method based on laser scanning
  • Equivalent target plate deformation testing device and method based on laser scanning

Examples

Experimental program
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Effect test

Embodiment 1

[0043] The console (1) comprises an automatic lifting control module (30) and a tripod (7), the top of the tripod (7) is equipped with the automatic lifting control module (30), and the automatic lifting control module A circular platform (8) for receiving the laser imaging scanner (2) is installed above (30). The central part of the automatic lifting control module (30) and the circular platform (8) is provided with through holes, and the screw rod (14) is vertically screwed in the two through holes, and the automatic lifting control module (30) side A locking knob (12) abutting against the screw rod (14) is arranged on the surface;

[0044] The gear structure (9) controlled by the motor (11) is installed on the outside of the screw (14) above the circular platform (8), and the speed reducer (13) is installed on the outside of the screw (14). The top is provided with a fixed knob (10) to adjust the laser imaging scanner (2);

[0045] The screw rod (14) located below the aut...

Embodiment 2

[0047] The structure of the calibration target frame 3 includes a calibration plate surface 18, a calibration rod 19 and a support frame 20, and the support frame includes a spiral lift rod 21 and a base 22, and the spiral lift rod 21 is fixed above the base 22. Calibration plate surface 18 is installed on two described bracing frame 20 tops, and described calibration plate surface 18 surface is provided with scale 23, adjusts the position of described calibration bar 19 by pulley 24 sliding on described calibration plate surface 18 surface, and described calibration plate surface The rod 19 moves along the scale 23, the surface of the calibration target frame 3 is respectively provided with leveling blisters 25, and the bottom of the calibration target frame 3 is equipped with four adjustment balance seats. The adjusting balance seat includes a knob (26), a bottom angle (27), a fixing nut (28) and a stud (29), the base is provided with mounting holes, and the top of the bottom...

Embodiment 3

[0049] A kind of testing method of equivalent target plate 5 deformation testing device based on laser scanning, it is characterized in that, comprises the following steps:

[0050] S1: setting the relative position of the laser imaging scanner 2 and the equivalent target plate 5;

[0051] S2: setting a spatial coordinate system through the laser imaging scanner 2 to obtain three-dimensional data in the scanning area;

[0052] S3: Segment the image of the equivalent target plate 5 by using the method of maximum variance between classes, and obtain the three-dimensional data of the area where the equivalent target plate 5 is located;

[0053] S4: Calculate the deformation curvature of the equivalent target plate 5;

[0054] S5: According to the three-dimensional coordinate information of each part of the equivalent target plate 5, the surf function of matlab is used to fit a three-dimensional curved surface, and the three-dimensional reconstruction display of the deformation e...

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Abstract

The invention discloses an equivalent target plate deformation testing device and method based on laser scanning, and relates to the technical field of weapon damage tests. The equivalent target plate is subjected to three-dimensional reconstruction through the deformation testing device, three-dimensional coordinate information of all parts of the equivalent target plate is obtained, three-dimensional point cloud data of the equivalent target plate are generated, and the data are processed by a data automatic processing program to finally generate an equivalent target plate image and deformation information thereof. According to the method, a laser scanning technology is combined with a data analysis means, the deformation information of the equivalent target plate can be quickly, accurately and visually obtained, and the problems that an existing testing method is tedious in testing step, obvious in subjective factor influence, difficult in data information obtaining, large in operation workload and low in testing efficiency are solved.

Description

technical field [0001] The invention relates to the technical field of weapon damage testing, in particular to a laser scanning-based equivalent target plate deformation testing device and testing method. Background technique [0002] Damage effectiveness is the most important performance index in the evaluation of weapon combat system, and the power generated by warhead explosion is an important key factor to measure damage effectiveness. Warhead damage methods include shock waves, fragments, etc. At present, the evaluation of damage effectiveness is mostly based on the analysis of the parameters of the fragments produced by the warhead explosion, while ignoring the degree of damage to the target by the shock wave. The deformation information of the equivalent target plate can more comprehensively reflect the damage degree of the warhead at a certain position in space, so the high-precision measurement of the deformation information of the equivalent target plate has extrem...

Claims

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Application Information

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IPC IPC(8): G01B11/16
CPCG01B11/16
Inventor 李翰山张晓倩高俊钗孟祥艳张雪薇
Owner XIAN TECHNOLOGICAL UNIV
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