Sökning: "composites"

Visar resultat 1 - 5 av 446 avhandlingar innehållade ordet composites.

  1. 1. Resin composites Sandwich restorations and curing techniques

    Detta är en avhandling från Umeå : Odontologi

    Författare :Anders Lindberg; Umeå universitet.; [2005]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicine; Adaption; Clinical; Degree of conversion; Depth of cure; Flowable; Resin composite; Restorations; SEM; Medicin;

    Sammanfattning : Since the mid-1990s resin composite has been used for Class II restorations in stress-bearing areas as an alternative to amalgam. Reasons for this were the patients’ fear of mercury in dental amalgam and a growing demand for aesthetic restorations. LÄS MER

  2. 2. Cellulose–Assisted Dispersion of Carbon Nanotubes : From Colloids to Composites

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :Alireza Hajian; KTH.; KTH.; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanocelluloses; Carbon nanotubes; Composites; Colloids; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : It is a challenge to disperse nanoparticles to obtain a nanostructured composite. This thesis aims at providing a new route to fabricate carbon nanotube (CNT) composites and suggests mechanisms for nanocellulose–CNT interactions. This route is based on unmodified CNT dispersed in water with the help of nanocellulose. LÄS MER

  3. 3. Composites for commercial ships

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :Måns Håkansson; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; design; ship; composites; commercial vessels; optimization; weight reduction; cost-efficient design;

    Sammanfattning : Composite materials have been used in marine applications for more than 50 years, and benefits such as low weight, low maintenance requirements and freedom of design are well known. A wider use of composites in larger, commercial vessels has been limited by initial costs and fire regulations, but both of these obstacles are diminishing. LÄS MER

  4. 4. Renewable composites prepared from biobased thermoset resins

    Detta är en avhandling från Göteborg : Chalmers tekniska högskola

    Författare :Dan Åkesson; Högskolan i Borås.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; natural fibres; composites; Energi och material; Renewable; natural fibre; composite; biobased thermoset resin;

    Sammanfattning : In our efforts to create a more sustainable society, several researchers have tried to prepare composites from renewable materials in recent years. The use of natural fibres for reinforcement of composites has been relatively well studied. LÄS MER

  5. 5. Processing and Properties of zirconia-CNT composites

    Detta är en avhandling från Luleå tekniska universitet

    Författare :Latifa Melk; Luleå tekniska universitet.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ceramics; Carbon Nanotubes; composites; Mechancial properties; Tribological properties; thermal properties; Materials science - Other material science; Teknisk materialvetenskap - Övrig teknisk materialvetenskap; Materialteknik; Engineering Materials; Smart machines and materials AERI ; Smarta maskiner och material FOI ;

    Sammanfattning : In the last decades there has been growing interest in developing ceramic materials with high fracture toughness (KIc) and strength for structural applications. In the specific case of 3 mol % yttria-doped tetragonal zirconia (3Y-TZP), K_Ic can be increased by promoting phase transformation from tetragonal (t) to monoclinic (m) phase in front of a propagating crack tip referred to as transformation toughening. LÄS MER