Transactions of Materials and Heat Treatment

Title：Experiment of acoustic emission characteristics for eccentric rotating low cycle fatigue cutting

Authors： Jin Dong Li Jingxiang Ren Yujian Zhao Shengdun Du Wei

Unit： Xi′an Jiaotong University

KeyWords： eccentric rotating fatigue cutting acoustic emission eccentric displacement fracture monitoring

ClassificationCode：TG386.43

year,vol(issue):pagenumber：2019,44(6):168-172

Abstract：

The cutting experiments of 304 stainless steel and 16Mn steel were conducted by eccentric rotation low cycle fatigue cutting process, and the fatigue load was applied by applying eccentric displacement. Furthermore, the acoustic emission signal during the fracture process of tube was collected, and the kurtosis, amplitude, ringing cumulative count and spectrum of the acoustic emission signal were extracted. It is found that these eigenvalues are highly consistent with the fracture process to accurately reflect the changes of various fracture stages in the cutting process, and this is because the acoustic emission signal detects the release of the strain energy of material, which coincides with the energy release during the fracture process. Comparing the acoustic emission signals during the fracture process of 304 stainless steel and 16Mn steel, it is found that the specific values of various parameters for the acoustic emission of different materials are different, which are caused by the difference in the properties of the material itself. The experimental results show that the fracture change of tube during the cutting process of eccentric rotation low cycle fatigue cutting is detected by the acoustic emission signal and clearly featured by some characteristic parameters, and the acoustic emission is used to monitor in the process of the eccentric rotation low cycle fatigue cutting.

Funds：

国家重点研发计划“智能农机装备”重点专项（2017 YFD0700200）；国家自然科学基金面上项目（51675414）；陕西省科学技术研究发展计划工业攻关计划（2015GY125）

金东（1996-），男，硕士研究生 E-mail：525053923@qq.com 通讯作者：李靖祥（1984-），男，博士，副教授 E-mail：jxli.xjtu@xjtu.edu.cn

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