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Author:

Ren, Chong-Gang (Ren, Chong-Gang.) | Shang, De-Guang (Shang, De-Guang.) (Scholars:尚德广) | Wang, Lu (Wang, Lu.) | Guo, Yu-Bo (Guo, Yu-Bo.)

Indexed by:

EI Scopus SCIE

Abstract:

In this study, the optimum laser process parameter was determined by fatigue experiment for the treated copper film specimens with thickness of 25 mu m. The mechanism of healing fatigue damage was analyzed by the numerical simulation of temperature field induced by laser irradiation and the microstructure changes on the surface of specimens. The results showed that the fatigue damage of copper film specimens can be healed when the applied energy density is in the range from 4x10(3) J/m(2) to 14x10(3) J/m(2), and the fatigue life can increase by about 5 times when the applied energy density is 7x10(3) J/m(2). The process hardening and grain refinement in the surface layer are mainly responsible for extending fatigue life.

Keyword:

Copper film Healing fatigue damage Laser-induced temperature field Laser surface irradiation

Author Community:

  • [ 1 ] [Ren, Chong-Gang]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 2 ] [Shang, De-Guang]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, Lu]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 4 ] [Guo, Yu-Bo]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China

Reprint Author's Address:

  • 尚德广

    [Shang, De-Guang]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China

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Source :

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY

ISSN: 1738-494X

Year: 2014

Issue: 4

Volume: 28

Page: 1257-1264

1 . 6 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:176

JCR Journal Grade:3

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 5

SCOPUS Cited Count: 4

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 10

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