IMECE2011-63725 INTERMEDIATE SCALE COMPOSITE MATERIAL FIRE TESTING

Abstract

ABSTRACT Composite materials are increasingly being used in aviation applications. As the quantity of composite material increases, there is a corresponding need to develop a better understanding of composite material response in fire environments. We have recently developed a program to examine this problem experimentally and computationally. Although Sandia National Laboratories and Air Force Research Laboratories at Tyndall have slightly different focuses, we are collaborating to focus on understanding duration, intensity, and the underlying physics during composite fires, as well as the technology and procedures to safely manage composite fire events. In the past year, we have been performing both small and intermediate scale testing to understand the behavior of composite materials used in aviation applications. The current focus is on a set of intermediate scale tests to generate data useful for understanding the behavior of carbon fiber epoxy composites in adverse thermal environments. A series of tests has been performed in a 90 cm cubic enclosure with 25-40 kg of composite materials to generate a severe fire environment fueled mostly by the composites. Preliminary results of these tests will be reported to provide data on the severity of the environment in terms of thermal intensity, duration, and chemical products. DETAILS The increased amounts of composites used in aircraft results in an increasing likelihood of a fire where the composites burn in the fire environment. Thus we are motivated by a need to understand the composite fire environment. To better understand the dynamics of aircraft fire events, we are developing models and conducting experiments. Modeling is aimed at developing a simulation tool that can reproduce with accuracy accident environments