Finite Element Analysis of Laser Peening of Thin Aluminum Structures
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 06, 2020
- Source ID
- 10.3390/met10010093
Entities
People
- Kristina Langer
- Michael Fitzpatrick
- Thomas J. Spradlin
Organizations
- Air Force Office of Scientific Research
- Lloyd's Register Foundation