Effects of the FLASHJET Paint Removal Process on the Fatigue Properties of Al 7075-T6 and Al 2024-T3

Abstract

The purpose of this study was to determine if the FLASHJET process affects the fatigue properties of two aluminum alloys that are commonly used as skin substrates in Army rotorcraft: (1) Al 2024-T3 and (2) Al 7075-T6. The two aluminum alloys were tested in high-cycle fatigue using thin fatigue coupons that were machined prior to painting and paint removal by the FLASHJET process. The high-cycle fatigue properties of these alloys were not degraded by the FLASHJET paint removal technique. This was true whether the specimens were depainted once to saturation or with five painting-depainting cycles simulating typical lifetime conditions. This finding concurs with other studies using similar testing parameters. Through a statistical analysis, the FLASHJET-processed specimens showed a statistically significant improvement in fatigue lifetimes under several testing conditions.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2005
Accession Number
ADA441234

Entities

People

  • Jim Campbell
  • Scott M. Grendahl
  • Victor K. Champagne

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Army
  • Chlorides
  • Composite Materials
  • Department Of Defense
  • Fatigue Tests (Mechanics)
  • Fixed Wing Aircraft
  • Materials
  • Measurement
  • Military Research
  • Saturation
  • Statistical Analysis
  • Substrates
  • Xenon Lamps

Readers

  • Materials Science and Engineering.
  • Theoretical Analysis.