AMS 3970/2 gives specific information about the qualification program for carbon fiber reinforced epoxy structural repair prepreg systems, applicable for 125 degrees C (250 degrees F) vacuum curing. The prepreg system may include an epoxy film adhesive to be applied in a co-curing process with the prepreg for joint and sandwich bonding. The need for a film adhesive shall be established during screening tests.
SAE AMS3970/2-1999 history
2016SAE AMS3970/2A-2016 Carbon Fiber Fabric Repair Prepreg, 120 °C (250 °F) Vacuum Curing Part 2 - Qualification Program for Fiber, Fabric, Carbon Prepreg, Film Adhesive and Non-Structural Glass Prepreg
2011SAE AMS3970/2A-2011 Carbon Fiber Fabric Repair Prepreg, 120°C (250°F) Vacuum Curing Part 2 - Qualification Program for Fiber, Fabric, Carbon Prepreg, Film Adhesive and Non-Structural Glass Prepreg
1999SAE AMS3970/2-1999 Carbon Fiber Fabric Repair Prepreg, 125 Degrees Celsius (250 Degrees F) Vacuum Curing Part 2 - Qualification Program for Fiber, Fabric, Resin and Film Adhesive