High-strength stainless steel stranded wire mesh enhanced ECC direct tensile test fixture and test method

A tensile test, stainless steel technology, applied in the direction of strength characteristics, the use of stable tension/pressure test material strength, measurement devices, etc. The effect of avoiding the eccentricity problem

Pending Publication Date: 2018-11-30
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of high-strength stainless steel stranded wire mesh reinforced ECC direct tensile test fixture, to solve the problem that the specimen stress that exists in the tensile test mode in the prior art is easily subjected to eccentric tension; the purpose of the present invention It is also to provide a high-strength stainless steel strand mesh reinforced ECC direct tensile test method

Method used

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  • High-strength stainless steel stranded wire mesh enhanced ECC direct tensile test fixture and test method
  • High-strength stainless steel stranded wire mesh enhanced ECC direct tensile test fixture and test method
  • High-strength stainless steel stranded wire mesh enhanced ECC direct tensile test fixture and test method

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Embodiment Construction

[0042] A kind of high-strength stainless steel stranded wire net of the present invention strengthens ECC direct tensile test fixture, as Figure 1-Figure 6 As shown, it includes an upper chuck and a lower chuck, and each chuck includes a chuck body, and any one of the chuck bodies is provided with an arc-shaped hole 9 that opens toward the other chuck, and the arc top of the arc-shaped hole 9 is set There is a perforation through the body of the chuck to communicate with the corresponding arc-shaped hole. A connecting rod 1 for connecting with the force application part of the tensile test equipment is installed in the perforation. The hole 9 is adapted so that the arc-shaped matching portion 11 can be self-centered when a force is applied. The arc-shaped hole 9 is a hemispherical structure, and the arc-shaped matching portion 11 is also a hemispherical structure. Each chuck body includes a connecting plate 2 and side plates 3 correspondingly connected to the corresponding t...

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Abstract

The invention relates to a high-strength stainless steel stranded wire mesh enhanced ECC direct tensile test fixture comprising an upper chuck and a lower chuck, each chuck comprises a chuck body, thechuck body is provided with a curved hole, a connecting rod rotatably penetrates into a hole on the curved top of the curved hole, and the end of the connecting rod is provided with a curved matchingportion for matching with the corresponding curved holes. The present invention also discloses a test method using the fixture for performing a tensile test. The curved matching portion cooperates with the curved hole to realize the function of partial spherical hinge, realizes the function of automatic centering, ensures axial stretching in a tensile process of a test piece, and avoids the problem of eccentricity.

Description

technical field [0001] The invention relates to the field of tensile tests, in particular to a high-strength stainless steel strand mesh reinforced ECC direct tensile test fixture and a test method. Background technique [0002] High-strength stainless steel strand mesh reinforced ECC (Engineered Cementitious Composites, engineering cement-based composite material) is a new type of cement-based composite material, which aims to combine the characteristics of ECC ultra-high ductility and toughness, tensile strain hardening and multi-slit cracking, As well as the advantages of high strength and two-way reinforcement of high-strength stainless steel strand mesh, give full play to the advantages of both, so that high-strength stainless steel strand mesh can enhance ECC to obtain better crack control ability, toughness, ductility and resistance to deformation. And reinforcement materials provide a new option. In order to apply this kind of composite material in practical enginee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/04G01N3/08
CPCG01N3/04G01N3/08G01N2203/0067
Inventor 李可汤万里金蕾蕾王新玲邹旭岩宋丹举王保贵和学庆冯硕卢培军李彬张占勇王冬辉
Owner ZHENGZHOU UNIV
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