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A platform for research: civil engineering, architecture and urbanism
Experimental studies of composite laminates damaged by fire
The response of advanced composite structures to fire is investigated. An analytical technique originally developed for ablative materials is adapted to this problem, and the analysis is used to guide an experimental program. A series of tests quantifies the damage induced in graphite/ epoxy laminates of three different thicknesses exposed to flame from a calibrated propane burner for times ranging from 3 seconds to 60 seconds. Visual observation, optical microscopy, and planimetric measurements of the area of matrix loss on the exposed face of the laminates show how the extent of the damage varies with the time of exposure. The specimens are weighed before and after burning to determine mass loss. The damaged specimens are also examined using a microhardness tester and a scanning electron microscope (SEM). The microhardness tests quantify the degradation of matrix hardness at various points in the cross-section of the burned specimen. The SEM provides detailed photographs of damage and indicates the depth of damage and the extent to which the specimens self-insulate. These results help to quantify the advantages and disadvantages of graphite/epoxy structures involved in aircraft fires.
Experimental studies of composite laminates damaged by fire
The response of advanced composite structures to fire is investigated. An analytical technique originally developed for ablative materials is adapted to this problem, and the analysis is used to guide an experimental program. A series of tests quantifies the damage induced in graphite/ epoxy laminates of three different thicknesses exposed to flame from a calibrated propane burner for times ranging from 3 seconds to 60 seconds. Visual observation, optical microscopy, and planimetric measurements of the area of matrix loss on the exposed face of the laminates show how the extent of the damage varies with the time of exposure. The specimens are weighed before and after burning to determine mass loss. The damaged specimens are also examined using a microhardness tester and a scanning electron microscope (SEM). The microhardness tests quantify the degradation of matrix hardness at various points in the cross-section of the burned specimen. The SEM provides detailed photographs of damage and indicates the depth of damage and the extent to which the specimens self-insulate. These results help to quantify the advantages and disadvantages of graphite/epoxy structures involved in aircraft fires.
Experimental studies of composite laminates damaged by fire
Experimentelle Untersuchungen an feuergeschädigten Verbundwerkstofflaminaten
Kucner, L.K. (author) / MaManus, H.L. (author)
1994
13 Seiten, 15 Bilder, 2 Tabellen, 4 Quellen
Conference paper
English
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