A Method for Preventing Catastrophic Failure in Aluminum Stressed Skin Panels

Abstract

Crack arrest and residual strength tests were conducted on 12-inch- wide bare and clad T6 aluminum alloy specimens to determine the effects of thin straps of fiberglass tape bonded to the specimens. The tests indicated that running cracks can be arrested by the fiberglass straps. Significant increases in the crack arrest behavior of up to 48 percent were obtained with two 0.75- inch by 0.010-inch straps spaces 2.75 inches apart on the front and back sides of the specimen. Residual static strength values for a specimen with a 2-4 inch-long crack) approaching the ultimate tensile strength of the material were achieved by this method.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1969
Accession Number
AD0866206

Entities

People

  • Charles D. Roach
  • I. E. Figge Sr.

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alloys
  • Aluminum Alloys
  • Army Aviation
  • Cameras
  • Composite Materials
  • Diameters
  • Fiberglass
  • Fibers
  • Hydraulic Tests
  • Impact Tests
  • Materials
  • Mechanics
  • Military Aircraft
  • Photographic Materials
  • Photography
  • Tensile Properties
  • Tensile Strength

Readers

  • Materials Science and Engineering.
  • Reinforced Composite Materials
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Space