Browsing by Author "Olsen, Torbjørn"
Now showing items 1-8 of 8
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Bond strength and performance of optical fibre Bragg gratings sensors embedded in composite patch repairs for military aircraft
Jones, Tyler Paul; Thorvaldsen, Tom; Sagvolden, Geir; Pran, Karianne; Olsen, Torbjørn (2016)Structural health monitoring (SHM) systems are recognized as a key element in a modern and efficient approach to structural lifecycle management. With novel applications of advanced materials, such as extensive use of ... -
COMPACT project - hydro burst testing of impact damaged four-inch pressure vessels
Thorvaldsen, Tom; Larsen, Helge Roar; Olsen, Torbjørn (2013-09-20)Twelve four-inch pressure vessels made of carbon fibre reinforced plastic (CFRP) have been produced at FFI. The applied material system is a carbon fibre reinforced prepreg system, TCR UF3325-95/M30SC. The vessels have ... -
Investigation of Theoretical Models for the Elastic Stiffness of Nanoparticle-Modified Polymer Composites
Thorvaldsen, Tom; Johnsen, Bernt Brønmo; Olsen, Torbjørn; Hansen, Finn Knut (2015)Mathematical models are investigated and suggested for the calculation of the elastic stiffness of polymer nanocomposites. Particular emphasis is placed on the effect on the elastic stiffness from agglomerates and the ... -
Material properties of silica/epoxy nanocomposites
Johnsen, Bernt Brønmo; Bourgeaux-Goget, Marie; Olsen, Torbjørn (2015-06-29)The use of composite materials in a variety of applications has increased considerably in the last couple of decades. The main reason for this is that composite materials are lightweight materials with high strength and ... -
Micro indentation hardness testing of commercial-grade RDX crystals
Moxnes, John Fredrik; Frøyland, Øyvind; Olsen, Torbjørn; Jensen, Tomas Lunde; Unneberg, Erik (2016)This paper describes the continuous micro indentation hardness testing of two commercial grades of RDX with differing shock sensitivities using three (3) different loads on a Berkovich indenter to obtain values of elastic ... -
The Optimum Dispersion of Carbon Nanotubes for Epoxy Nanocomposites: Evolution of the Particle Size Distribution by Ultrasonic Treatment
Frømyr, Tomas Roll; Hansen, Finn Knut; Olsen, Torbjørn (2012)The ultrasonic dispersion of multiwalled carbon nanotube (MWCNT) suspensions was assessed by studying the differential sedimentation of the particles in an acid anhydride often employed as a curing agent for epoxy resins. ... -
Overflatemodifisering av silikongummi for å oppnå bedre adhesjon mot polare forbindelser
Aardal, Joakim; Grorud, Mette; Hansen, Finn Knut; Olsen, Torbjørn; Grythe, Kai Frode (2009)I dette arbeidet er ulike typer silikongummi overflatemodifisert på fem forskjellige måter; varmebehandling, plasmabehandling, syrebehandling, laserbehandling, og behandling med oksidasjonsmiddelet hydrogenperoksid. ... -
Preparation and characterisation of epoxy/alumina polymer nanocomposites
Johnsen, Bernt Brønmo; Frømyr, Tomas Roll; Thorvaldsen, Tom; Olsen, Torbjørn (2013)The effect of adding nanosized alumina fillers of both fibre-like and spherical shapes to an epoxy polymer has been investigated. The alumina was dispersed in the epoxy hardener using two different sonication techniques. ...