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Inverse analysis of the tool life in laser-assisted milling

  • Yixuan FengEmail author
  • Tsung-Pin Hung
  • Yu-Ting Lu
  • Yu-Fu Lin
  • Fu-Chuan Hsu
  • Chiu-Feng Lin
  • Ying-Cheng Lu
  • Steven Y. Liang
ORIGINAL ARTICLE
  • 15 Downloads

Abstract

In current study, an inverse analysis is conducted on tool life based on five process parameters, by predicting tool life based on guessed process parameters, which is defined as the forward problem, and applying iterative gradient search to find process parameters for next iteration, which is defined as the inverse problem. For forward problem, the effect of laser beam is included by treating it as a heat source on top surface. Next, the milling configuration is simplified as orthogonal cutting followed by angular-dependent coordinate transformation at each rotation angle. The effective force due to flank wear is predicted by integrating the stress components along the chip cross section and wear land, and the average stress on tool-workpiece interface is then derived based on the effective force and contact area. The average temperature along the interface is derived by considering secondary and rubbing heat sources. The stress and temperature affects the abrasion, adhesion, and diffusion which determine the flank wear rate. The tool life is then decided as the cutting time when the flank wear limit of the tool is reached. The iterative gradient search or variance-based recursive method is applied to solve inverse problem and update process parameters to match the tool life. Three cutting parameters including depth of cut, feed per tooth, and cutting speed, and two laser parameters including laser-tool distance and laser power are updated in each iteration. The proposed model is validated through experimental measurements on the laser-assisted milling of K24 nickel-based superalloy. The proposed predictive model is able to match the measured tool life with high computation efficiency less than 540 s and high accuracy of less than 7% difference.

Keywords

Tool life Iterative gradient search Inverse analysis Laser-assisted milling 

Notes

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  • Yixuan Feng
    • 1
    Email author
  • Tsung-Pin Hung
    • 2
  • Yu-Ting Lu
    • 3
  • Yu-Fu Lin
    • 3
  • Fu-Chuan Hsu
    • 3
  • Chiu-Feng Lin
    • 3
  • Ying-Cheng Lu
    • 3
  • Steven Y. Liang
    • 1
  1. 1.Woodruff School of Mechanical EngineeringGeorgia Institute of TechnologyAtlantaUSA
  2. 2.Department of Mechanical EngineeringCheng Shiu UniversityKaohsiungTaiwan
  3. 3.Metal Industries Research and Development Centre (MIRDC)KaohsiungTaiwan

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