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Simply supported type vibrating aging platform for beam component

A technology of vibration aging and beam components, which is applied in the field of material testing equipment, can solve the problems of reducing aging effect, increasing scrap rate, workpiece deformation, etc., and achieves the effects of improving life, eliminating residual stress, and adjusting amplitude

Active Publication Date: 2017-12-12
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional vibration aging treatment uses a cantilever beam vibration test bench, which easily deforms the workpiece during the excitation process, increases the scrap rate, and reduces the aging effect

Method used

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  • Simply supported type vibrating aging platform for beam component
  • Simply supported type vibrating aging platform for beam component
  • Simply supported type vibrating aging platform for beam component

Examples

Experimental program
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specific Embodiment

[0051] Laser displacement sensor 12 adopts FT50 RLA-20 laser displacement sensor; acceleration sensor 15 adopts DH131 piezoelectric acceleration sensor.

[0052] Under normal experimental conditions, the laser displacement sensor 12 is fixed on the lower bracket of the clamping part of the excitation source, and the acceleration sensor 24 is fixed on a component close to the clamping part of the center of the vibration source by bolts. Each sensor measures in real time and transmits the data to the dynamic data acquisition system, and then the system is connected to the PC terminal through the network cable, and the vibration acceleration and vibration displacement can be tested and analyzed in the computer operating system. It can also complete the test and analysis of stress and strain by pasting metal strain gauges on the workpiece, and finally complete the real-time storage, real-time display and real-time analysis of the four elements of vibration. The specific data acquis...

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Abstract

The invention discloses a simply supported type vibrating aging platform for a beam component. The two ends of a base of the platform are provided with end head clamping tools. The middle of the base of the platform is provided with an exciting vibration source testing device. The exciting vibration source testing device comprises a U-shaped bracket. The upper end of the U-shaped bracket is provided with a hanging plate. The upper end of the hanging plate is provided with an electric vibration exciter. The lower end of the hanging plate is connected with a horizontal supporting plate. A pressing clamping tool is arranged between the hanging plate and the supporting plate. The beam component is provided with an acceleration sensor. The bottom of the U-shaped bracket is provided with a laser displacement sensor. The pressing clamping tool comprises a rotating disc. A sliding groove is formed in the bottom surface of the rotating disc. An adjusting screw rod is arranged in the sliding groove. The adjusting screw rod is provided with a pressing plate. An end head of the adjusting screw rod is coaxially provided with an adjusting gear and an adjusting rotary knob. The upper end of the rotating disc is provided with a center shaft. The center shaft is provided with a gear disc and a nut ring. The edge of the bottom surface of the gear disc is provided with a gear ring meshing with the adjusting gear. By means of the simply supported type vibrating aging platform for the beam component, vibration exciting can be achieved under first order inherent frequency of the component, aging processing is conducted on the component, residual stress is eliminated, and the fatigue damage and crack development of the component are reduced.

Description

technical field [0001] The invention relates to the technical field of material testing equipment, in particular to a simply supported vibration aging platform for beam components. Background technique [0002] Due to the quenching, casting, welding, forging, hot and cold straightening of aerospace aluminum alloy workpieces, a large amount of residual stress will be generated. The uneven distribution and high peak value of the residual stress are the main reasons for the deformation, warpage, cracking, stress corrosion, reduction of deformation resistance, fatigue limit reduction and fracture toughness reduction of the workpiece. At present, there are mainly three methods for eliminating and homogenizing the residual stress of workpieces: natural aging, thermal aging and vibration aging. Among them, vibration aging has attracted extensive attention because of its advantages of high efficiency, energy saving, and low cost. The traditional vibration aging treatment uses a can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D10/00
CPCC21D10/00Y02P10/20
Inventor 廖凯张萧笛朱家豪王浩刘文宇于丹睿车兴飞何源宏张家培赫欢
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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