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Auxiliary measuring device and method for percentage elongation after fracture and percentage reduction of area in tensile test

A technology of elongation after fracture and reduction of section, applied in measuring devices, using stable tension/pressure to test material strength, instruments, etc., can solve problems such as inability to guarantee measurement accuracy, waste of detection time, etc., and achieve measurement implementation. The effect of less difficulty, improved measurement accuracy, and simple measurement device

Inactive Publication Date: 2021-04-30
HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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  • Abstract
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Problems solved by technology

[0007] At present, the existing methods of measuring the elongation after fracture and the reduction of area of ​​the tensile test are mainly handheld measurement, or a simple device with a concave groove is used for measurement. For some metal materials, especially welding materials, samples with inclined fractures after fracture , it is difficult to give accurate measurement results on the basis of intact splicing after fracture, which wastes detection time and cannot guarantee measurement accuracy

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  • Auxiliary measuring device and method for percentage elongation after fracture and percentage reduction of area in tensile test
  • Auxiliary measuring device and method for percentage elongation after fracture and percentage reduction of area in tensile test
  • Auxiliary measuring device and method for percentage elongation after fracture and percentage reduction of area in tensile test

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Embodiment Construction

[0072] The present invention will be further described in detail through the drawings and examples below. Through these descriptions, the features and advantages of the present invention will become more apparent.

[0073] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0074] In the present invention, the tensile test refers to a test for measuring a series of properties of a material under the action of a tensile load, also known as a tensile test.

[0075] According to the provisions of GB / T228.1-2010, the elongation after break (A) refers to the residual elongation of the gauge length after break (L u -L 0 ) and the original gauge length (L...

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Abstract

The invention provides an auxiliary measuring device and method for the percentage elongation after fracture and the percentage reduction of area of a tensile test. The device comprises a left sample supporting groove, a right sample supporting groove, a transmission rod assembly and a guide rail, wherein a post-fracture test sample is carried by the left sample supporting groove and the right sample supporting groove to reciprocate on the guide rail, and the two end faces with the post-fracture test sample are accurately spliced together, so that the subsequent measurement work is facilitated, and the residual elongation and the sectional area of the post-fracture test sample are obtained.

Description

technical field [0001] The invention relates to a measuring device, in particular to an auxiliary measuring device and method for elongation after fracture and reduction of area in a tensile test. Background technique [0002] Metal materials are widely used in various fields of aviation, aerospace, energy, chemical industry, transportation, and mining machinery. During use, they need to bear tensile force, compressive force or alternating loads, and at the same time ensure their own structure and performance. It is necessary to measure the plasticity of the material. Metal materials are often evaluated by the elongation after fracture and the reduction of area in the tensile test to evaluate their plasticity performance indicators. [0003] According to the provisions of GB / T228.1-2010, the elongation after break (A) refers to the residual elongation of the gauge length after break (L u -L 0 ) and the original gauge length (L 0 ) as a percentage of the ratio: [0004] A...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/02
CPCG01N3/08G01N3/02G01N2203/0017
Inventor 刘宇任国松张哲单瑞来李宏艳李萌萌刘晶徐明娇
Owner HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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