Student projects at Risø

By investigating the wetting/surface/interface properties of various solutions on different surfaces, a better understanding on how to optimize the infiltration solutions and backbone structures will be gained.

The aim of this study will be to synthesize some proton conductor materials with different doping and to study the effect of the doping on their conductivity.

In the RelHy European project a large amount of electrolysis cell testing raw data is collected. This data requires pre-processing in order to understand the performance and durability of the tested electrolysis cells, which is also important in order to ensure comparability with the other European partners in the project.

The project will involve deposition and characterisation of interlayers on metal supports and the optimisation of the microstructure by modifying the; interlayer material, solution chemistry, and heat treatment time and temperature

By modifying and/or controlling the properties of various surfaces/interfaces one can achieve better performance and durability of SOC applications (both fuel cells (SOFC), and electrolysis cells (SOEC)).

A gradient furnace is an efficient tool for optimizing the sintering procedure. A gradient furnace designated to optimize the sintering of metal supported SOFC will be used to improve the cell quality and the cell fabrication route.

Risø kan tilbyde en række projekter inden for området magnetisk køling, herunder fremstilling og karakterisering af magnetokaloriske materialer og deltagelse i opbygningen og afprøvningen af et magnetisk kølesystem.

The project will cover a systematic study on cathode ink manufacturing to order learn more about the properties, benefits and interactions of its different organic and inorganic additives.

The production of a layer of YSZ by tape casting requires the optimization of many parameters involved in the processing: from the solid load of the ceramic material, to the type and amount of different organic additives (dispersants, binders, plasticizers, wetting agent, and defoamers), to the conditions of the actual casting.

The project will involve fabrication and characterisation of extruded porous metal supports and the optimisation of the microstructure by modifying the; solids loading in the polymer melt, polymer type, and sintering time and temperature.

Forbindelser af typen K2NiF4 ønskes undersøgt som katode materialer for direkte reduktion af NOx i en faststofoxid baseret elektrokemisk celle.

Powders will be synthesised and characterised with powder XRD

Investigations of properties of natural fibres and their composites

The project involves nonlinear finite element modeling using the commercial finite element code ABAQUS. The project involves using a newly developed user element subroutine to study structural response at small scale.

Der skal udføres målinger af udmattelses- og dæmpningsegenskaberne af forskellige typer af fiberforstærket termoplast med kontinuerte fibre.

Der skal fremstilles fiberforstærket termoplast med kontinuerte fibre med forskellige procesparametre, og den opnåede materialekvalitet skal karakteriseres.

Vekselvirkningerne mellem superledning, magnetisme og struktur i stærkt korrelerede elektronsystemer, såkaldte kvantekeramikker, er tilsyneladende de afgørende mekanismer bag disse materialers usædvanlige egenskaber, deriblandt høj temperatur superledning.

Fremstilling af materialer, herunder énkrystaller, og studier med bulk måleteknikker, elektronmikroskopi, neutron og synkrotron røntgenspredning af CMR effekt i dopet Ln2-xAxMnO4.

We propose a variety of projects relating to the manufacture of superconducting wires in view of power applications. The projects are mostly experimental in nature and are performed within a tight collaboration between Risø and DTU’s Physics Institute.

Projektet omfatter teoretisk og eksperimentelt arbejde i forbindelse med modellering af den kvantitative sammenhæng mellem fiber-, matrix- og porøsitetsindhold i kompositmaterialer (dvs. den volumetriske interaktion).

Single point incremental forming is a new forming process to obtain parts with a complex shape out of a metal sheet. Although the process itself is relatively simple, the locally induced deformation is rather complex. This will affect the microstructure and therefore the properties of the used material. Some unresolved questions about the deformation process might be clarified by a thorough look at the inner structure of the material.

Ortopæd Ingeniørene har udviklet og produceret en dropfodsskinne ved navn Flexbrace®, som har været på marked i 8 år. Der ønskes en FEM af en dropfodsskinne i simplificeret form med henblik på at undersøge samspillet mellem geometri, materialer, belastninger og produktion. Med udgangspunkt i dropfodsskinnens funktion og geometriske begrænsninger skal der foretages en parameter undersøgelse af dropfodsskinnen. Parameterundersøgelsen vil omfatte en vurdering af anvendte materialer samt geometri i forhold til de mekaniske belastninger skinnen bliver udsat for af patienten

99% of all engineering metallic materials are polycrystalline, thus are made up of grains with different orientations. Grain maps showing how the grains and some of their properties are distributed in space are very important in the study of microstructural changes in this type of materials. However, to study how the individual grains behave during the course of the structure change, the different grain maps must be aligned, and this is not necessarily an easy task because the grains may rotate, move, disappear, grow or even break up.

The project involves nonlinear finite element modeling using the commercial finite element code ABAQUS. The project involves using a newly developed user material subroutine and can ether include application of the model on specific problems or improvement of the implemented model.

Natural fibre composites have found increased international interest during the last decade. Traditionally, new materials have been developed in order to solve technological problems within the aerospace, military, sport or medicine fields, whereas natural fibre composites are also developed in another perspective; they must meet the demands in society of being sustainable materials.

Based on finite element models of specific suspicious skull fracture cases, a dynamic finite element simulation of the fracture process will be performed. The finite element model will be extracted from a CT-scan of the specific case and the simulation can e.g. focused on the influence on the spongius layer in the skull and the influence of a detailed dynamic cohesive element model on the subsequently crack predictions.

Arbejdet indebærer indsamling af luft-prøver i felten med henblik på at bestemme emissionen af drivhusgasserne lattergas og metan. Der arbejdes på arealer dyrket med henblik på produktion af biomasse til energi formål.

The project studies the effects of multifactor climate change to plants. Effects are studied at different levels of the organism from genome over transcriptome to physiology, phenotype and lastly species interactions. Selected crop and model species are analysed.
Interactions between plants and fungal leaf diseases are also studied in different climate scenarios.

Pretreated (wet oxidized) manure (sterile and odourless) will be tested and characterized as growth medium for the macroalgae Saccharina Latissima, which will following be converted to bioethanol

Besides cellulose and lignin, hemicelluloses (the second most abundant natural polymers in nature) are the main structural polysaccharides in the plant cell walls. The hemicellulose (xylan and β-glucan) polymers, extracted from grain crops have significant application potential both in the food and non-food area e.g. for film production.

The purpose is to prepare BIO’s biogas pilot plant for operation, in order to enable it to carry out pilot scale experiments.

The project is about the production of 2nd generation bioethanol that are emerging on the world markets as a new transport fuels. 2nd generation bioethanol is a so-called renewable fuel since it is made from abundant cellulosic and lignocellulosic biomaterials e.g. wheat straw, rice straw, wood chips etc.. Lignocellulosic materials are protected by lignin to prevent microbial attack and sugar degradation. In order to make use of those sugars for the production of bio ethanol we need to establish efficient pretreatment technologies to break down lignin. In Risø a plasma based processes for the pretreatment of lignocellulosic biomass was established.

Plant materials are primarily made up of three main types of biopolymer: cellulose, lignin and hemicellulose. In the ongoing biofuels research at Risø-DTU hemicelluloses are generated as by-products from bioethanol production. This project involves studies of these compounds as well as commercial hemicelluloses in the design of new composite materials.

In this project we will prepare virtual PLACN models with different modifier architectures by using computational techniques such as Density Functional Theory and/or ab initio studies.

The project will involve the use of advanced computational techniques such as molecular dynamics (MD) simulation.

Projektet sætter fokus på polymere som skal øge effektiviteten og levetiden af organiske solceller. Udover syntesen af denne type polymere vil der også udføres test af polymererne i solceller.

Zephyr/Prediktor is the oldest commercial tool for the short-term prediction of wind power world-wide. It uses WAsP theory to downscale the wind fields from Numerical Weather Prediction input to the actual wind farm site in question. In order to remove the last remaining errors, a Model Output Statistics (MOS) module is used.

Kite types such as the ones known from for instance kite surfing, can be used for generating mechanical power by “winding out” the kite wire while the kite is doing maneuvers (for instance circles directly downwind of the ground attachment) in the air.