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  • Core Material

    • Aluminum Honeycomb

    • Nomex Honeycomb

  • Face sheet materials

    • 4 ply either side, should we use Kevlar or Fiberglass for inner layer (galvanic)

    • In areas 500mm from driver, do we want to add more layers when adding the Kevlar or remove some layers

  • Adhesive

    • Co-bond using West Systems

    • Co-bond using Lam 127

    • Secondary bond using West Systems

    • Secondary bond using Lam 127

    • Secondary bond using Araldite

    • Secondary bond using paste epoxy

  • Filler materials

    • This would be for secondary bond epoxies, especially paste epoxies, in order to get ideal bond thickness (4-8 thou)

    • This has the potential to strengthen our panels but I have no data research to back this up (it just makes sense kinda… right?) and it would have to be completely empirical

  • Kevlar fiber interfacial toughening (Kevlar Fiber interfacial toughening)

First test plans

Test all with fiber glass as inner layer first, then kevlar

Volume fraction around 55%(will test)

For now, all tests will be 3 ply cf, Kevlar/fiber glass, core, kevlar/fiberglass, 3 ply cf

  • Orientation will be 0, 45, -45, 90

Nomex core test group:

Control: co-bond w/ West Systems or Lam 127

Config 2: secondary bond w/ West Systems or Lam 127

Config 3: secondary bond w/ araldite

Config 4: secondary bond w/ paste epoxy

Honeycomb properties

  • cell size: 3/16 inch

  • density: 6 lb/ft^3

  • thickness: 20 mm

Aluminum test group:

Control: co-bond w/ West Systems or Lam 127

Config 2: secondary bond w/ West Systems or Lam 127

Config 3: secondary bond w/ araldite

Config 4: secondary bond w/ paste epoxy

Honeycomb properties

  • cell size: 1/2 inch

  • density: 0.000752 - 0.0994 lb/in³

  • thickness: 3/4 inch