Development of a Field Repair Technique for 'Mini-Sandwich' Kevlar/Epoxy Aircraft Skin.
Abstract
An experimental analysis was performed on Kevlar/epoxy cloth mini-sandwich panels with cellular foam core. Three undamaged panels and twenty-three other panels with damage and repairs were subjected to static shear loading. Four parameters were varied in the types of repairs, hole size, hole plug filler material, patch material, and patch overlap distance. All twenty-six panels were tested to failure. A repair technique employing a cellular foam plug and fiber-glass patches overlapping the original hole by 0.50 inches, symmetrically applied with structural adhesive, was found to be suitable for repair of up to three inch diameter circular holes at field repair level. Additionally, postbuckling energy absorption was qualitatively examined for undamaged panels and for hole sizes ranging from 1 to 5 inches diameter. Originator-supplied keywords included: Mini-Sandwich, Composite Material, Shear Loading, Repair, Kevlar/Epoxy, Aircraft panels, Theses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1984
- Accession Number
- ADA151369
Entities
People
- D. B. Cripps
Organizations
- Naval Postgraduate School