Damage resistance is one of the key requirements of advanced composites for use in many high performance applications. This paper discusses manufacturing of damage resistant composite structures. The types of damage addressed include impact, fatigue, and creep. The role of various factors including design, materials, and processing has been discussed for improvement of composite damage resistance. Damage tolerant design approaches discussed include optimization of composite layup (fiber orientation, stacking sequence), damage containment using stitching, interleafing, 3D reinforcements, hybrid concepts, and use of external protection materials. Material factors discussed include effect of strength, modulus, strain to failure, fracture toughness, and environmental (temperature, humidity) resistance. The processing approach for improving damage resistance consists of manufacturing high quality composites with minimal manufacturing defects using optimum cure cycle and cure temperature. Sources of errors originating from the above factors are addressed and recommendations made to minimize the problems and improve the composite damage resistance.
Manufacturing of damage resistant composite structures for aerospace applications
Fertigung bruchbestaendiger Verbundstrukturen fuer die Raumfahrt
1987
4 Seiten, 3 Bilder, 1 Tabelle, 17 Quellen
Conference paper
English
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