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Automatic elongation measuring system and method for steel bar tension test

A tensile test and automatic measurement technology, used in measuring devices, using stable tension/pressure to test the strength of materials, instruments, etc., can solve the problems of labor-intensive, low measurement accuracy, and large errors, to improve measurement efficiency, The effect of improving firmness and improving measurement accuracy

Pending Publication Date: 2019-10-18
GUANGDONG JIANZHUN DETECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manual measurement is performed after removing the two sections of the broken steel bar, which is inefficient and labor-intensive, and the measurement accuracy is low and the error is large

Method used

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  • Automatic elongation measuring system and method for steel bar tension test
  • Automatic elongation measuring system and method for steel bar tension test
  • Automatic elongation measuring system and method for steel bar tension test

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0031] An automatic elongation measurement system for steel bar tensile test, such as figure 1 shown, including:

[0032] The tensile test device comprises an upper tensile end 5, a lower tensile end 3, a column 2 and a base 1, the upper tensile end 5 and the lower tensile end 3 are arranged parallel to each other, and the upper tensile end 5 and the lower tensile end The end 3 is connected in series up and down through the columns 2 at both ends, and the bottom end of the column 2 is fixed on the base 1; after the upper tension end 5 and the lower tension end 3 are clamped to the steel bar 4, they can be connected by hydraulic cylinder or other The power mechanism realizes that the upper stretching end 5 and the lower stretching end 3 are stretched outward along the column 2 .

[0033] Such as figure 2 , image 3 and Figure 4 As shown, the central positions of the opposite surfaces of the upper stretching end 5 and the lower stretching end 3 are correspondingly provided...

Embodiment 2

[0038] An automatic measuring method for elongation of steel bar tensile test, the measuring method applied in the automatic measuring system for elongation of steel bar tensile test described in embodiment one, comprising:

[0039] Step S1: The upper and lower ends of the steel bar 4 are respectively provided with gauge lines, and the upper and lower ends of the steel bar 4 are respectively clamped by the upper stretching end 5 and the lower stretching end 3; the terminal and the laser displacement measuring device are opened, and the laser The displacement measurement device is connected to the terminal, and the laser displacement measurement device is used to proofread the steel bar 4, so that the gauge lines of the upper and lower sections of the steel bar 4 fall within the laser measurement range of the laser displacement measurement device, so that the laser displacement acquisition device 7 can collect Displacement changes between gauge lines.

[0040] The steel bar 4 i...

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PUM

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Abstract

The invention discloses an automatic elongation measuring system and method for a steel bar tension test, and the system comprises the following parts of a tension test device comprising an upper tensile end, a lower tensile end, columns and a base, wherein the upper tensile end and the lower tensile end are arranged in parallel and oppositely and are connected in series through the columns on both ends, and the bottom ends of the columns are fixed on the base; a laser displacement measuring device used for measuring displacement changes between the steel bar gauge lines by laser; and an information processing system in signal connection to the laser displacement measuring device and used for receiving the data collected by the laser displacement measuring device in real time, generating astress and displacement curve, and obtaining the tension elongation of the steel bar. The measuring method is applied in the above system. In the tension test, the displacement detected by the laserdisplacement measuring system is combined with the tensile force used for the tensile steel bar to obtain the complete stress and displacement curve of the steel bar, which is beneficial to automatingthe test and thereby improving the measuring efficiency.

Description

technical field [0001] The invention relates to the technical field of building material detection, in particular to an automatic elongation measurement system and method for a steel bar tensile test. Background technique [0002] In building structural materials, steel bars are an important part, and the performance of steel bars directly affects the applicability and safety of structures. Therefore, steel bars need to undergo necessary performance testing before they are used in engineering construction. Among them, the mechanical properties of steel bars are determined by tensile tests of steel bars. The measurement of the elongation of the tensile specimen after fracture is a relatively tedious and meticulous work. The traditional method is to manually splice the broken steel bars, and use measuring tools such as calipers to measure the distance between the two gauge lines. Manual measurement is carried out after removing the two sections of steel bars after being brok...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/04G01N3/06G01B11/02
CPCG01N3/08G01N3/068G01N3/04G01B11/02G01N2203/0017G01N2203/0075G01N2203/028G01N2203/04G01N2203/0641G01N2203/0676G01N2203/0682
Inventor 梁智峰黄继廉劳振杰张宇玲吴文龚广宇钟添良何达明范庆波
Owner GUANGDONG JIANZHUN DETECTION TECH CO LTD