Heat transfer and crystallization kinetics during the processing of thermoplastic composite materials are modeled mathematically in order to predict the temperature and degree of crystallinity as a function of position and time. The model can accommodate complex geometries, variable properties as well as a choice of boundary conditions. The model was verified by comparison with experimental results.

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The Tri-Services Thermal Nuclear Flash Test Facility for investigating the effects of thermal radiation on materials hae-. established. e Facility is located at the USAF Wright Aeronautical Labo tories/Materials Laboratory, Wright-Patterson AFB, Ohio. The capability for irradiating specimens to intense thermal radiation, including the effects of aerodynamic loads or mechanical loads is operational. Seven thousand six hundred forty-one (7,641) tests ' conducted for the Tri-Service community at this time. A large number of additional tests are scheduled during the next 12 months; additional improvements to the Facility are planned, with an emphasis on heat flux calibration techniques and on photographing specimen deterioration during the exposure to intense radiation heating./

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