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Strain test device for tension-torsion multi-shaft fatigue test under corrosion environment

A corrosive environment and strain testing technology, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as low cost and use of strain testing devices, and achieve the effects of avoiding corrosion, long service life, simple and lightweight structure

Inactive Publication Date: 2010-01-06
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the problem that the strain testing device cannot be used in a corrosive environment, the present invention designs a strain testing device for a tensile-torsional fatigue test in a corrosive environment for the special loading system of the tensile-torsion testing machine. The device is easy to operate, Safe and reliable, fast dynamic response to measurement, high precision, low cost, and high application value

Method used

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  • Strain test device for tension-torsion multi-shaft fatigue test under corrosion environment
  • Strain test device for tension-torsion multi-shaft fatigue test under corrosion environment
  • Strain test device for tension-torsion multi-shaft fatigue test under corrosion environment

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preparation example Construction

[0029] Preparation of the present invention: the lower support plate 2, the upper support plate 4, and the sealing baffle 10 are made of 304 austenitic stainless steel. The sealing rings 8, 17, 18, and 21 adopted in the system are all "O" type sealing rings. The electrolytic cell 16, the plexiglass plate 7, and the upper and lower induction brackets 12, 23 are made of plexiglass for the corrosion test. The torsional deformation sensing plate 25 and the stretching deformation sensing plate 26 are No. 45 steel. The bolts and screws used in the system are made of stainless steel. In order to prevent the corrosion of the ceramic thimble immersed in the corrosive solution and improve the service life of the strain test device, the thimble is made of non-metallic ceramic material. This kind of alumina ceramic material has the characteristics of stable chemical properties and high mechanical strength.

[0030] Installation of the present invention: the sample 19 is penetrated in th...

Embodiment 1

[0033] In this embodiment, the diameter of the tensile and torsion fatigue test sample is 10 mm, and the inner diameter of the electrolytic cell is 130 mm. Take the tension ring on the ceramic thimble as 60mm from the tip of the ceramic thimble. At this time, the distance between the tensile deformation sensor interface and the tension ring is 80mm, and the distance between the torsion deformation sensor interface and the tension ring The distance is 50mm.

[0034]Pass the ceramic thimble through the side wall of the electrolytic cell from the inside to the outside, install the side sealing ring and the sealing baffle in sequence, adjust the position of the ceramic thimble so that the distance between the top of the thimble and the side wall of the electrolytic cell is 60mm, and place the upper and lower induction brackets Fix it to the other side of the ceramic thimble, place a cuboid metal block with a thickness of 5mm between the upper and lower sensing brackets to ensure t...

Embodiment 2

[0037] In this embodiment, the diameter of the tensile and torsion fatigue test sample is 10 mm, and the inner diameter of the electrolytic cell is 154 mm. The tension ring on the ceramic thimble is taken as 72mm away from the tip of the ceramic thimble. At this time, the distance between the tensile deformation sensor interface and the tension ring is 68mm, and the distance between the torsional deformation sensor interface and the tension ring is The distance is 38mm.

[0038] Pass the ceramic thimble through the side wall of the electrolytic cell from the inside to the outside, install the side sealing ring and the sealing baffle in sequence, adjust the position of the ceramic thimble so that the distance between the top of the thimble and the side wall of the electrolytic cell is 60mm, and place the upper and lower induction brackets Fix it to the other side of the ceramic thimble, place a cuboid metal block with a thickness of 5mm between the upper and lower sensing brack...

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Abstract

The invention relates to a strain test device for a tension-torsion multi-shaft fatigue test under a corrosion environment, which is characterized in that an electrobath with a bed sealing system and a lateral-wall sealing system is fixed on a testing machine to form a supporting structure, wherein the bed sealing system is positioned between a support plate and the electrobath and formed by an upper sealing ring, a lower sealing ring, an organic glass plate, an outer sealing ring and a liquor guide opening, and the lateral-wall sealing system is positioned on a joint position of ceramic thimbles and the electrobath and is formed by a lateral sealing ring and a sealing baffle plate; a sample is led into the electrobath and passes through the bed sealing system, one end of each ceramic thimble passes through the lateral-wall sealing system to extend into the electrobath, and the other ends of the ceramic thimbles are connected with an upper induction support frame and a lower induction support frame which are parallel and provided with a tension deformation tester and a torsion deformation tester. The invention designs the more perfect sealing systems, realizes the measurement of material tension and torsion strain under the corrosion environment and has simple structure, difficult leakage, wide measurement range and higher precision.

Description

Technical field: [0001] The invention relates to a strain test device for a pull-down-torsion fatigue test in a corrosive environment, belonging to the technical field of structure and material deformation measurement. The strain test device can be used to measure the uniaxial or multiaxial strain of materials under corrosive environment. Background technique: [0002] The strain test device is an important part of the material testing machine. It measures the small deformation of the sample under various loads such as tension and compression. It has the characteristics of high precision, high reliability and high sensitivity. At present, there are many uniaxial strain test devices and few strain test devices used under multi-axial loads. Chinese patent 200410072189.1 invented a high-frequency response high-temperature tension-torsion fatigue extensometer, but this device is only suitable for use in an air environment. Since the strain test device is a precision component, ...

Claims

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Application Information

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IPC IPC(8): G01N3/00G01N3/02
Inventor 黄毓晖涂善东轩福贞王正东贾九红
Owner EAST CHINA UNIV OF SCI & TECH
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