根据局部热负荷下的变形模式分析检测压力接头

IF 0.9 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING
S. A. Bekher, A. A. Popkov, A. S. Vyplaven, V. N. Fedorinin, V. I. Sidorov, S. P. Shlyakhtenkov, I. Yu. Kinzhagulov
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引用次数: 0

摘要

摘要 本文介绍了在局部脉冲热加载条件下使用应变片评估轴承套圈与轴的压紧连接张力的可能性的实验研究结果。研究人员制备了 38 至 118 μm 范围内的压配接头样品。通过接触法和热成像法研究了轴承套圈和拉伸样品中的热流传播模式,结果表明可以分离与温度对应变测量区域的影响和加热区域的温度梯度有关的应变。实验中采用了以下方法:检测暴露在热功率为 80 kJ、温度为 200°C 的加热器环上的压力机接头,并通过基座为 60 mm、分辨率为 \(2 \times {{10}^{{ - 7}}}) 相对变形单位的光偏振传感器测量环和轴的应变。在轴的局部应变达到最大值的时间与压紧接头的松紧度之间,以及在压紧配合泄漏的轴承套圈的应变符号与套圈和轴之间的间隙之间建立了相关性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Inspection of Press Joints Based on the Analysis of Their Deformation Patterns under Local Thermal Loading

Inspection of Press Joints Based on the Analysis of Their Deformation Patterns under Local Thermal Loading

Inspection of Press Joints Based on the Analysis of Their Deformation Patterns under Local Thermal Loading

The results of experimental studies of the possibility of using strain gauges under local pulsed thermal loading to evaluate the tension of the press connections of bearing rings with shafts are presented. Samples of press-fit joints in the range from 38 to 118 μm were prepared. As a result of the study of the patterns of heat flow propagation in bearing rings and tension samples by contact method and by means of thermal imaging, the possibility of separating strains associated with the influence of temperature on the strain measurement area and the temperature gradient in the heating area is shown. The methods of inspecting a press joint exposed to a heater ring with a heat power capacity of 80 kJ and a temperature of 200°C and measuring the strains of the ring and shaft by an opto-polarizing sensor with a base of 60 mm and a resolution of \(2 \times {{10}^{{ - 7}}}\) relative deformation units have been experimentally implemented. A correlation has been established between the time of reaching the maximum of local strains in the shaft with the tightness of the press joints and of the sign of strains in the bearing ring with a press fit leak with the gap between the ring and the shaft.

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来源期刊
Russian Journal of Nondestructive Testing
Russian Journal of Nondestructive Testing 工程技术-材料科学:表征与测试
CiteScore
1.60
自引率
44.40%
发文量
59
审稿时长
6-12 weeks
期刊介绍: Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).
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