Search for dissertations about: "TEMPERATURE DEPENDENCIES"

Showing result 1 - 5 of 27 swedish dissertations containing the words TEMPERATURE DEPENDENCIES.

  2. 1. Dielectric properties of poly(ethyelene-co-butyl acrylate) filled with Alumina nanoparticles

    Author : Nadejda Jäverberg; Hans Edin; Eva Mårtensson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanocomposites; poly ethylene-co-butyl acrylate ; EBA; alumina; dielectric permittivity; absorbed water; humidity; temperature; dielectric spectroscopy; partial discharge; electrical treeing; Electrical engineering; Elektroteknik;

    Abstract : In this work dielectric properties of the poly(ethylene-co-butyl acrylate)filled with alumina nanoparticles are evaluated. These nanocomposite materialswere manufactured at the department of Fibre and Polymer Technology,KTH.This study is limited to the properties of general importance for the AC applications. READ MORE

  4. 2. Creep modeling and first-principles investigation of high-temperature alloys

    Author : Jing Zhang; Pavel A. Korzhavyi; Rolf Sandström; Gunther Eggeler; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Austenitic stainless steels; Nickel-based superalloys; Fundamental creep models; EMTO-CPA method; Quasi-harmonic Debye model; Thermo-mechanical properties; High temperatures.; Teknisk materialvetenskap; Materials Science and Engineering;

    Abstract : Stainless steels and nickel-based superalloys are materials that have been widely used to manufacture components servicing at high temperatures. Creep strength is one of the most important properties in such conditions. READ MORE

  5. 3. Laser-assisted CVD Fabrication and Characterization of Carbon and Tungsten Microhelices for Microthrusters

    Author : Kirk L. Williams; Johan Köhler; Mats Boman; Joseph Pegna; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; LCVD; Carbon; Tungsten; Microspring; Resistance; Teknisk fysik; Engineering physics; Teknisk fysik;

    Abstract : Laser-induced chemical vapor deposition (LCVD) is a process enabling the deposition of solid material from a gas phase in the form of free-standing microstructures with high aspect ratios. The deposition rate, wire diameter, and material properties are sensitive to changes in temperature and gas pressure. READ MORE

  6. 4. Fabrication of Group IV Semiconductors on Insulator for Monolithic 3D Integration

    Author : Ali Asadollahi; Mikael Östling; Paul R. Berger; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; monolithic three dimensional M3D integration; strained germanium on insulator sGeOI pMOSFETs; silicon silicon-germanium on insulator sSOI sSiGeOI nMOSFETs; Si0.5Ge0.5 strain-relaxed buffer SRB ; direct bonding; chemical mechanical polishing CMP ; compressively strained GeOI; tensile strained Si0.5Ge0.5OI;

    Abstract : The conventional 2D geometrical scaling of transistors is now facing many challenges in order to continue the performance enhancement while decreasing power consumption. The decrease in the device power consumption is related to the scaling of the power supply voltage (Vdd) and interconnects wiring length. READ MORE

  7. 5. Material investigations and simulation tools towards a design strategy for an ultrasonic densitometer

    Author : Jan van Deventer; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell elektronik; Industrial Electronics;

    Abstract : The purpose of the research described in the thesis has been to improve the accuracy, precision and reliability of an ultrasonic densitometer for liquids in general. Its practical application is a stand-alone device or, in combination with an ultrasonic volumetric flow meter, an all-ultrasonic mass flow meter. READ MORE