Improved technique for attaching aluminum flange to aramid/epoxy duct prevents subsequent development of cracks in joint during thermal stress. Flange butted against cylindrical mold on which duct is fabricated. Flange has tapered neck so will nest in duct opening. Epoxy-impregnated aramid tape wrapped around mold so tape overlaps flange. While tape is wrapped, pressure applied to it and inside of flange as heated uniformly to maximum expected operating temperature. Heat and pressure maintained until aramid/epoxy laminations have cured.
Eliminating Thermal Cracks in Flange/Duct Joints
NASA Tech Briefs ; 10 , 3
1986-05-01
Miscellaneous
No indication
English
Pneumatic Permeability of Flange Joints
British Library Online Contents | 2006
|Laser welding of hem flange joints
Tema Archive | 2000
|Design approach for composite flange attachment joints
AIAA | 1987
|Reinforcement Repairs Cracks, Joints
British Library Online Contents | 1999