Finite Element Analysis of Laser Peening of Thin Aluminum Structures

Kristina Langer, T. Spradlin, Michael Fitzpatrick

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
12 Downloads (Pure)

Abstract

Laser shock peening has become a commonly applied industrial surface treatment, particularly for high-strength steel and titanium components. Effective application to aluminum alloys, especially in the thin sections common in aerospace structures, has proved more challenging. Previous work has shown that some peening conditions can introduce at-surface tensile residual stress in thin Al sections. In this study, we employ finite element modeling to identify the conditions that cause this to occur, and show how these adverse effects can be mitigated through selection of peen parameters and patterning.
Original languageEnglish
Article number93
Number of pages16
JournalMetals
Volume10
Issue number1
DOIs
Publication statusPublished - 6 Jan 2020

Bibliographical note

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Funder

This research study was sponsored by the Air Force Office of Scientific Research, Air Force Material Command, USAF, under grant number FA8655-12-1-2084, and the Air Force Research Laboratory’s Aerospace Systems Directorate.

Keywords

  • Aluminum alloys
  • Laser peening
  • Residual stress

ASJC Scopus subject areas

  • Materials Science(all)

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