Obiettivo 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. Campo scientifico engineering and technologymaterials engineeringcompositescarbon fibers Programma(i) FP1-EURAM - Research programme (EEC) on materials (raw materials and advanced materials) - Advanced materials (EURAM) -, 1986-1989 Argomento(i) Data not available Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore Urenco Ltd Contributo UE Nessun dato Indirizzo 18 Oxford Road SL7 2NL Marlow Regno Unito Mostra sulla mappa Costo totale Nessun dato Partecipanti (2) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto MAN Technologie AG Germania Contributo UE Nessun dato Indirizzo Bauschinger Straße 20 80997 München Mostra sulla mappa Costo totale Nessun dato RISO NATIONAL LABORATORY Danimarca Contributo UE Nessun dato Indirizzo Frederiksborgvej 399 Mostra sulla mappa Costo totale Nessun dato
