Dynamic and Static Evaluation of Experimental Integral Fuel Tank Sealant Materials
Final rept. 1 May 1970-1 Apr 1973
DOW CORNING CORP MIDLAND MI
Pagination or Media Count:
A dynamic test apparatus has been designed and fabricated for purpose of testing experimental aircraft integral fuel tank sealants. The apparatus is capable of closely simulating the conditions encountered by a sealant during a typical aircraft flight. In addition, the apparatus has the flexibility of simulating a virtually unlimited number of stress, temperature, fuel, and pressure conditions, and will automatically repeat the desired test cycle until sealant failure, occurs. A fillet sealed test joint has been used in the testing to date and with proper joint designs the apparatus will accommodate other types of seals found in aircraft fuel tank construction. Dynamic testing to date has been performed on Dow Corning 77-028, 77-085, 95-526, 77-108, 3M Polyester, a fiber reinforced polyester, and a Viton sealant formulated by the Air Force Materials Laboratory. These materials were all tested in a fillet seal configuration. High temperature aging in JP-7 fuel vapor was performed on the above materials, and physical properties were determined on the aged specimens both at room temperature and selected high temperatures representative of possible aircraft conditions.
- Adhesives, Seals and Binders