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Low-frequency vibration assisted isothermal stretching characterization measuring device

A low-frequency vibration, measuring device technology, applied in the direction of testing the strength of materials by applying stable tension/pressure

Inactive Publication Date: 2021-04-23
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the lack of low-frequency vibration-assisted material mechanical behavior characterization means in the existing vibration plastic processing field, the present invention proposes a low-frequency vibration-assisted isothermal tensile characterization measurement device to realize metal vibration softening and heat-induced softening in the low-frequency vibration plastic forming process Quantitative Characterization of Behavior

Method used

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  • Low-frequency vibration assisted isothermal stretching characterization measuring device
  • Low-frequency vibration assisted isothermal stretching characterization measuring device
  • Low-frequency vibration assisted isothermal stretching characterization measuring device

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Embodiment Construction

[0022] like figure 1 As shown, this embodiment includes: a hydraulic vibration excitation device and a temperature control device installed on a universal testing machine, and an information collection system.

[0023] like figure 2 As shown, the described universal testing machine is based on the frame of the electronic universal testing machine, and has an upper chuck 12 , a lower chuck 14 , a movable bracket 2 and a movable beam 6 .

[0024] The hydraulic vibration excitation device includes: a vibration excitation cylinder 9 and a hydraulic station 10 connected by a high-frequency servo valve 8, wherein the vibration excitation cylinder 9 is located at the base of the electronic universal testing machine and is connected with the lower chuck 14 to transmit the excitation wave , the hydraulic station 10 is connected with the oil inlet and the oil return port of the high frequency servo valve 8 and provides stable oil pressure for it.

[0025] like image 3 As shown, the...

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Abstract

The utility model discloses a low-frequency vibration assisted isothermal tensile characterization measuring device which comprises a hydraulic vibration excitation device, a temperature control device and an information acquisition system, wherein the hydraulic vibration excitation device and the temperature control device are arranged on a universal testing machine; the temperature control device heats and preserves heat of a to-be-tested metal sample, meanwhile, the hydraulic vibration excitation device applies vibration to the to-be-tested metal sample through a chuck, the universal testing machine keeps clamping and testing the to-be-tested metal sample in the whole process, and the material mechanical property under the isothermal vibration condition is collected through the information collection system. Quantitative characterization of metal vibration softening and thermally induced softening behaviors in the low-frequency vibration plastic forming process is achieved, the controllability is high, the measurement precision is high, and large excitation force can be provided.

Description

technical field [0001] The invention relates to a technology in the field of vibration plastic processing, in particular to a low-frequency vibration-assisted isothermal tensile characterization measurement device. Background technique [0002] Vibration plastic processing refers to the application of vibration in the form of ultrasonic waves and mechanical waves to plastically formed molds or blanks to achieve the purpose of improving the deformation ability and processing quality of the blanks. Related technologies have been applied in the fields of metal drawing, extrusion, deep drawing and welding, and some vibration-assisted metal forming process devices have been formed. In the existing vibratory plastic processing technology, the excitation frequency of the ultrasonic vibration device is high, and the load it can withstand is small. In many cases, the transmission of excitation energy cannot be directly applied to the core deformation area of ​​the material, so that t...

Claims

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Application Information

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IPC IPC(8): G01N3/18
Inventor 庄新村许亚坤郑启德赵震
Owner SHANGHAI JIAO TONG UNIV
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