Firefighting and Emergency Response Study of Advanced Composites Aircraft; Objective 1: Composite Material Damage in Minor Aircraft Fires
Final rept. 2 Oct 2009-24 Sep 2012
AIR FORCE RESEARCH LAB TYNDALL AFB FL MATERIALS AND MANUFACTURING DIRECTORATE/AIRBASE TECHNOLOGIES DIV
Pagination or Media Count:
Three aerospace composite materials with quasi-isotropic layup were exposed to varied uniform radiant heating to evaluate the delamination damage caused by the thermal environment. Three classes of matrix resins were evaluated with IM7 carbon fibers epoxy 977-3, modified bismaleimide RM3002 and condensation polyimide AFR-PE-4. Thermal exposure was mild and indicative of a hydrocarbon pool fire at a standoff from the material. After exposure, the plates were machined into four-point bend and tensile samples and mechanically tested. Mechanical degradation in terms of tensile and flexural modulus and strength were documented as a function of exposure level. Microscopy of the machined sections was performed to document the observed damage.
- Commercial and General Aviation
- Laminates and Composite Materials