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Double arm type tester for shear strength

A shear strength, tester technology, applied in the direction of using a stable shear force to test the strength of materials, instruments, measuring devices, etc., can solve problems such as large load values, and achieve stable performance, accurate and reliable test data, and operation. handy effect

Inactive Publication Date: 2008-12-17
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When loading, the load value will be too large due to the friction of the support

Method used

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  • Double arm type tester for shear strength
  • Double arm type tester for shear strength
  • Double arm type tester for shear strength

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Experimental program
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Effect test

Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing:

[0019] Depend on figure 1 It can be seen that the present invention mainly includes a load sensor 1, a shear strength bearing frame 3 connected with the load sensor 1, a pressing plate 4 placed on the test piece 5, a screw rod 6 connected with the pressing plate for positioning, and a screw rod 6 for supporting the test piece. The shear strength support 8 of part 5, its shear strength bearing frame 3 has two not only being convenient to bear force, but also the variable cross-section support arm that can reduce self-weight, the lower end of each arm is provided with the fixed location of fiber cloth and antiskid special fixture.

[0020] Depend on figure 1 It can also be seen that: the shear strength base 9 is supported under the shear strength support 8, and the positioning screw rod 6 is surrounded by a cuboid and installed around the test piece. The upper end of each s...

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Abstract

The invention discloses a double-arm type shear strength tester, which mainly includes a load sensor, a shear strength bearing frame connected with the load sensor, a pressure plate placed on the test piece, a positioning screw rod connected with the pressure plate, and a The shear strength support supporting the specimen, the shear strength bearing frame has two variable cross-section support arms that are convenient for bearing force and can reduce the self-weight. At the lower end of each arm, there is a fiber cloth on both sides of the test specimen. The special fixture is used for positioning and anti-slip. The invention has simple structure, good centering effect and stable performance; its load sensor can reflect the loads at all levels accurately and with high sensitivity, and can be connected with a computer to directly sample and process the load and the test piece. The relationship curves of other test instruments output; the shear strength bearing frame is the core component of the present invention, in the test, each arm mainly bears the bending load, but for the test piece, the direction of the fiber cloth stress remains unchanged, the test The data is accurate and the error is small.

Description

Technical field: [0001] The invention relates to a test instrument, in particular to a double-arm shear strength tester used for testing the bonding strength between concrete and fiber cloth in reinforcement works in engineering construction and scientific research Background technique: [0002] Since the fiber cloth material is used in engineering construction, that is, the fiber cloth is pasted on the concrete surface to strengthen, reinforce, and repair the concrete structure, thereby greatly improving the mechanical performance of the structure. The experimental research on the bond strength between cloth and concrete is getting more and more in-depth. Fiber cloth materials include carbon fiber cloth CFRP, glass fiber cloth GFRP, aramid fiber cloth AFRP, hybrid fiber cloth, etc. The fiber cloth used in the reinforcement project is mainly carbon fiber cloth and glass fiber cloth, and its tensile strength is generally between 2000 and 4000Mpa. [0003] At present, the fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/04G01N3/24
Inventor 赵广田高丹盈李趁趁
Owner ZHENGZHOU UNIV
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