Materials Literature
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This work is done to prepare multifunctional fabric by coating with nano composite made of reduced graphene oxide and TiO2 on polyester fabric. The influence of the RGO coatings on polyester fabrics imparts properties such as light absorption, conductivity, electroactivity and photocatalytic properties. With the incre…
At the outset, the primary focus of this Ph.D. project has been directed towards the synthesis of new 2,2’-dipyridylamino(dpa)- and 1,2,4-triazole(trz)- based ligands to be incorporated into spin crossover (SCO) iron(II) complexes. Initial aims sought the synthesis of a wide and diverse range of SCO compounds containi…
The demand for a clean, sustainable energy future has motivated the scientific community to research alternative sources of power. Energy is vital to the growth and quality of our civilization and is the origin of the nexus of major issues facing the world today. Issues such as clean water, adequate food, spread of di…
To improve the plastic instability of a thermoplastic polymer composite under cold forming, a copper mesh was filled into the polypropylene (PP). PP-Cu mesh composite plate specimens with the Cu mesh inclined in various directions were formed by the compression molding of the PP pellet and Cu mesh. First, the tensile…
Based on the discrete element software PFC2D, building background grid model of concrete under simulated different projectile penetration rate, in the process of penetration of concrete target, the expansion of the crack damage, and compared with the cement mortar model. In crushing zone near the projectile formation,…
Self-assembly is a key tool in the design of smart materials.The research of lowmolecular-weight gels research as smart materials has largely focused on the final assembly and its resulting properties.One major problem in this field is the lack of understanding of the relation between the initial gelator molecule and…
Ausgehend von den politischen und gesellschaftlichen Randbedingungen werden die Forschungs- und Entwicklungsarbeiten zur sicheren Endlagerung radioaktiver Abfälle, wie sie im Kernforschungszentrum Karlsruhe im Institut für Nukleare Entsorgung durchgeführt wurden, zusammengestellt. Die Organisationformen und die jeweil…
Analysis of the plane stress state of an elastic circular cylinder under coating pressure yields approximate dependences of the maximum shear stress (over the depth) on the cylinder radius. The applicability of classical Hertz–Belyaev solutions in the contact of elastic cylinders is investigated (in terms of the small…
Conical aluminium projectiles of apex angle 34 degrees were made to impact thin aluminium targets inclined at an angle of 60 degrees at low subordnance velocities where material strength effects are still valid. Thin targets of thickness 1.5mm and 2mm underwent failure by reverse petalling as the projectiles penetrate…
Various experimental attempts have been made to obtain a uniform magnetic field in the space between face-to-face HTS bulk magnets that could possibly be utilized as NMR magnets. In general, the magnetic fields emitted from the magnetic pole surfaces containing HTS bulk magnets are characterized as non-uniform field d…
There is a lot of interest in complex 3D woven fabrics for composites because they can lead to special mechanical properties and applications.The two main advantages are the improved resistance against delamination and the reduction of manual labour.Since the fabrics are produced in one single run, a stacking sequence…
The formation of a polymer coating from Ultra polytetrafluorethylene (PTFE) in frictional systems is analyzed, for the example of Forum antifrictional additive. Self-organization of the system is observed. The best frequency of additive introduction in the lubrication system of an automobile is determined.
A structure study of epoxidized trans -1,4-polyisoprene (ETPI) synthesized by heterogeneous method is carried out using 13 C-NMR. In this paper, we present a new analytical method for assigning overlapping 13 C-NMR signals of ETPI in terms of the triad of trans -1,4-isoprene and epoxidized units. The monomer unit sequ…
Thrombolytic drugs are used in medicine to dissolve blood clots in a procedure termed thrombolysis. To prevent occlusion, patients are treated with an antiplatelet or antithrombotic drug, or a combination of both. However, the traditional thrombolytic therapies have often been associated with the risk of severe bleedi…
It is a well known fact that linear elastic fracture mechanics (LEFM) predicts stress singularities at the tips of sharp cracks, at sharp edges, at corners and at the surface of material transitions. However, from the viewpoint of the strengths of atomic bonds it is clear that only finite forces may be present at the…
The thermocapillary convection is induced along a liquid-vapor interface due to surface tension gradient which is temperature dependent. Due to the large increase in surface area relative to volume, surface tension has a dominant effect on the fluid behavior in a capillary structure. Evaporation of a thin film induces…
This thesis deals with proof of concept experiments made at cryogenic temperatures on carbon nanotubes, graphene, and nanomechanical resonators. The work also addresses self assembly of molecules on graphene. The main emphasis of the thesis is on charge detection with carbon nanotube devices. \nSingle electron transis…
Monitoring the gap between the pressure tube (PT) and the calandria tube (CT) in CANDU® fuel channels is essential, as contact between the two tubes can lead to delayed hydride cracking of the pressure tube. Multifrequency transmit-receive eddy current non-destructive evaluation is used to determine this gap, as this…
The composition, crystal structure and phase relationship of the main intermetallics of the Mg-Zn-La system on the low La side have been studied. The results show that there exists a binary solid solutions of Mg 12 La as (Mg,Zn)La 12 and a linear ternary compound (Mg,Zn) 11.5 La. Though the composition formula of the…
Paper is made from fibres and other components where its properties are controlled by the properties of these components, as well as their structural arrangement in the fibres network and the papermaking conditions. The lack of understanding in the role of fibre-fibre bond strength in paper mechanical properties has l…