Blar i NTNU Open på forfatter "Echtermeyer, Andreas"
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3D Printable Filaments Made of Biobased Polyethylene Biocomposites
Filgueira, Daniel; Holmen, Solveig; Melbø, Johnny K; Moldes, Diego; Echtermeyer, Andreas; Chinga-Carrasco, Gary (Journal article; Peer reviewed, 2018)Two different series of biobased polyethylene (BioPE) were used for the manufacturing of biocomposites, complemented with thermomechanical pulp (TMP) fibers. The intrinsic hydrophilic character of the TMP fibers was ... -
A Practical Approach for Data Gathering for Polymer Cure Simulations
Heinze, Søren; Echtermeyer, Andreas (Journal article; Peer reviewed, 2018)Producing precision parts requires good control of the production parameters. When casting thermoset polymers an understanding of the curing process, with its heat release and associated temperature changes, is important. ... -
A Running Reference Analysis Method to Greatly Improve Optical Backscatter Reflectometry Strain Data from the Inside of Hardening and Shrinking Materials
Heinze, Søren; Echtermeyer, Andreas (Journal article; Peer reviewed, 2018)Due to the increasing ease of use and the superiority of the results, distributed strain measurements, utilizing Optical Backscatter Reflectometry (OBR), have become more important and widespread over the last few years. ... -
Adhesion, Friction and Leakage in Contacts with Elastomers
Tiwari, Avinash (Doctoral theses at NTNU;2018:277, Doctoral thesis, 2018)Adhesion, friction and leakage in contacts with elastomers is central to many technologically demanding applications such as tires, seals, wiper blades and syringes to just name a few. These tribological systems are very ... -
Anisotropic fluid diffusion in carbon fiber reinforced composite rods: Experimental, analytical and numerical study
Gagani, Abedin; Krauklis, Andrejs; Echtermeyer, Andreas (Journal article; Peer reviewed, 2018)Carbon fiber composite plastic (CFRP) rods immersed in water present a pronounced anisotropic diffusion behavior. Understanding and predicting this behavior is important as the mechanical properties of the material are ... -
Buckling due to external pressure of a composite tube measured by Rayleigh optical backscatter reflectometry and analyzed by finite elements
Hugaas, Eivind; Vedvik, Nils Petter; Echtermeyer, Andreas (Journal article; Peer reviewed, 2018)There is a growing interest in replacing steel tubes that operate in high pressure and high temperature environments with composite tubes. Such applications can include drilling risers and drill strings for the offshore ... -
Change of strain field due to damage development in adhesive joints
Midtbø, Carl-Magnus (Master thesis, 2013)In this thesis six metal I-beams with a crack repaired by a composite patch been tested in four point bending. The patches used to repair the beams had three different patch thicknesses. The different thicknesses were ... -
Closed Mould Net Shape Processing of Prepregs with Resin Injection
Johnsen, Simen (Master thesis, 2013)High performance composite parts require strict tolerances in all directions before the parts are ready to be used. Numerous of machining and assembly operations are often required to obtain the desired geometry and ... -
Compression stress relaxation in carbon black reinforced HNBR at low temperatures
Akulichev, Anton; Alcock, Benjamin; Echtermeyer, Andreas (Journal article; Peer reviewed, 2017)Findings of a study of stress relaxation behaviour of hydrogenated nitrile butadiene rubber (HNBR) at nominal compressive strains up to 0.4 and temperatures above and below the glass transition temperature Tg are reported. ... -
Cure Modeling of Large Casted Thermoset Polymer Parts
Heinze, Søren (Doctoral theses at NTNU;2018:407, Doctoral thesis, 2018) -
Design and Fabrication of a Passively Adaptive Carbon Fiber Propeller
Mark, Lukas (Master thesis, 2020)The overall goal of this project was to produce an adaptively flexible fixed pitch propeller using polymer composites. Polymer composites are generally used for their high weight to strength ratio, however they can also ... -
Design Modeling and Production of a Passive Adaptive Composite Marine Propeller Blade
Ølnes, Jon Schawlann (Master thesis, 2020)Denne oppgåva undersøker moglegheiter for å designe og produsere eitpassivt tilpassande, marint propellblad ved å bruke dei anisotropiske eigen-skapane til fiberforsterka plast. Oppgåva viser korleis ein kan skreddarsy ... -
Development of a Modular Polyethylene Pipe Hull and GFRP Rudder System for an Autonomus Surface Vessel
Brandal, Almar Vreim (Master thesis, 2021)Det akademiske fagfeltet rundt autonome overflatefartøy er snart klare til å produsere fartøy kapable til lange oppdrag langt til havs. Disse fartøyene kan fungere som data insamlere for en rekke forskjellige industrier. ... -
Development of Pressure Vessel Using Steel Fiber
Juell, Thomas (Master thesis, 2019)Denne oppgaven har undersøkt muligheten for bruk av ende-trukket rustfritt stålfiber med diameter på 8 $\mu$m for å produsere fiberforsterket polymerkompositt produsert gjennom filamentviklingsmetode. Hovedformålet med ... -
Development, Design and Production of a Wingsail for an Autonomous Surface Vessel
Dyrseth, Maria Brudeseth (Master thesis, 2020)I løpet av de siste årene har det vært en økende interesse i å undersøke det marine økosystemets helse. Klimaendringer der økte havnivåer, en økende marin industri og shipping, plastikkavfall i havet og forurensing fra ... -
Digital Twin for composite materials
Ekerhovd, Peder Lange (Master thesis, 2020)En Digital Tvilling (Digital Twin) ble utviklet for å kalkulere skade fra kryp og utmatting på grunn av en-akset belastning i plastkomponenter. Den Digitale Tvillingen gjorde en kvantitativ analyse av skaden som oppstår ... -
Digital Twin of Composite Pipe with Liner
Wangsholm, Endre (Master thesis, 2021)Et fleksibelt stigerør består av flere lag og blir utsatt for utmatting og krypbrudd. For å kunne estimere skade som blir påført på det indre laget av polymer i stigerøret ble det utviklet en modell og et program basert ... -
Dissolution kinetics of R-glass fibres: Influence of water acidity, temperature, and stress corrosion
Krauklis, Andrey; Gagani, Abedin; Vegere, Kristine; Kalnina, Ilze; Klavins, Maris; Echtermeyer, Andreas (Journal article; Peer reviewed, 2019)Glass fibres slowly degrade due to dissolution when exposed to water. Such environmental aging results in the deterioration of the mechanical properties. In structural offshore and marine applications, as well as in the ... -
Dissolving Cylinder Zero-Order Kinetic Model for Predicting Hygrothermal Aging of Glass Fiber Bundles and Fiber-Reinforced Composites
Krauklis, Andrey; Echtermeyer, Andreas (Chapter, 2018)Glass fibers and fiber-reinforced composites degrade when exposed to water. Understanding the dissolution behaviour of glass in fiber-reinforced composites is necessary to predict the changes in physical and mechanical ... -
The effects of the van der Waals potential energy on the Young’s modulus of a polymer: comparison between molecular dynamics simulation and experiment
Sahputra, Iwan Halim; Echtermeyer, Andreas (Journal article, 2021)Molecular dynamics simulation were employed to investigate the effect of changing the potential energies describing primary and secondary bonds on the Young’s modulus of a polymer. The energies were changed by arbitrarily ...