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Load-fixed disk-type tester of holographic material

A holographic material, constant load technology, used in the analysis of materials, the use of applied stable tension/pressure to test the strength of materials, instruments, etc.

Inactive Publication Date: 2004-09-22
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcomings of the performance and deformation rules of the above-mentioned universal testing machine testing materials under constant load conditions, and to provide a device that can stably apply loads, accurately record data, has simple structure, low cost, and takes up space. Small, easy-to-operate disc-type fixed-load holographic material testing machine. This testing machine can not only apply load stably and record data accurately, but also provide the strain hardening index and strain rate sensitivity index of the material after mathematical processing of the data. , the change law of stress relaxation exponent and related constitutive equation

Method used

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  • Load-fixed disk-type tester of holographic material
  • Load-fixed disk-type tester of holographic material
  • Load-fixed disk-type tester of holographic material

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Embodiment Construction

[0094] The present invention is described in further detail below in conjunction with the embodiment given with accompanying drawing.

[0095] refer to figure 2 , image 3 , Figure 9 , The disc-type constant load holographic material testing machine is composed of a main engine, a sample chuck, force value and deformation data acquisition, computer control and data holographic processing system. Its main engine is composed of load transmission and braking mechanism set in the frame.

[0096] Said frame includes base 11, upper vertical plate 25 on both sides, lower vertical plate 14, upper horizontal plate 19, lower horizontal plate 31, reinforcing bar 28; A rotating shaft 27, the small disc 2 and the large disc 1 are respectively fixedly arranged on the rotating shaft 27, and the left end of the rotating shaft 27 is connected to the dynamic friction disc of the friction electromagnetic clutch 24 through a symmetrical sliding key, and the DC motor 21 and the worm gear fixe...

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Abstract

A load-fixed disk-type holographic tester for material is testing disclosed. A big disk for hanging a load from it and a small disk for hanging an upper clamp from it are fixed to a rotation shaft on the machine frame. A lower clamp is fixed to the base. One end of the said shaft is connected via clutch and torque sensor to the output axle of speed reducer driven by a DC motor. Its another end has encoder, clutch, motor and torque sensor, all of which are connected to the computer control system. Its advantages are automatic control, simple structure and excellent performance.

Description

Technical field: [0001] The invention belongs to material testing and experimental instruments, in particular to a testing machine which is especially suitable for testing material properties and deformation rules under arbitrary fixed load. Background technique: [0002] The materials used in a large number of industrial projects often only need to study and test the deformation law and mechanical properties of the material under load. At present, most of the universal material testing machines with complex structures, functions and high cost are used, especially for plasticity. Superplastic and superplastic materials have strong strain rate sensitivity. The universal test is used to test its related properties under constant load, and the test results have large errors. Sensitivity, whether using a hydraulic or mechanical universal testing machine, a closed-loop control is used to achieve the application of a fixed load, and the measurement of the load is a force sensor, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/00G01N3/08G01N3/18
Inventor 宋玉泉管志平
Owner JILIN UNIV