Objetivo This research project aims at delaying the onset of interfibre/matrix cracking in multilayer CFRP composites by applying design/manufacturing means, which are in analogy to the concept of prestressed concrete. Two major routes are being studied: Controlled expansion of a composite structure by using an expandable mandrel. Expansion is either done after filament winding, but prior to completion of gelling/curing or on a finished standard wound structure at a temperature above the glass transition point with final release of the expansion loads after cooling down. Stress relief of standard wound structures by submission at elevated temperatures to stresses similar to those experienced in later operation followed by cooling down to ambient temperature prior to unloading. For certain CFRP structures, precompression of the matrix can be achieved using an expandable mandrel. This leads to an increase in the tolerance stress/strain range as the threshold for interfibre/matrix cracking and thus first ply failure moves toward higher strain values. Ámbito científico engineering and technologymaterials engineeringcompositescarbon fibers Programa(s) FP1-EURAM - Research programme (EEC) on materials (raw materials and advanced materials) - Advanced materials (EURAM) -, 1986-1989 Tema(s) Data not available Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador Urenco Ltd Aportación de la UE Sin datos Dirección 18 Oxford Road SL7 2NL Marlow Reino Unido Ver en el mapa Coste total Sin datos Participantes (2) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo MAN Technologie AG Alemania Aportación de la UE Sin datos Dirección Bauschinger Straße 20 80997 München Ver en el mapa Coste total Sin datos RISO NATIONAL LABORATORY Dinamarca Aportación de la UE Sin datos Dirección Frederiksborgvej 399 Ver en el mapa Coste total Sin datos