Sökning: "viscoelastic measurements"

Visar resultat 36 - 40 av 58 avhandlingar innehållade orden viscoelastic measurements.

  1. 36. Continuum modeling of paperboard for the mechanical response of converting processes

    Författare :Kristofer Robertsson; Hållfasthetslära; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Paperboard; Continuum modeling; Converting processes; FEM simulations; Finite strain theory; Damage modeling; Rate-dependent; Creasing and folding; Out-of-plane experiments;

    Sammanfattning : Paperboard is a thin and lightweight material made of cellulose fibers and it is an important component in packaging material where it provides stiffness and rigidity. The scope of this work is the development of continuum models, and its numerical treatments, for simulating the processes of converting paperboard into packages. LÄS MER

  3. 37. Evaluation of Low Temperature Damage in Asphalt Mixtures with Non-Contact Resonance Testing

    Författare :Abiy Bekele; Denis Jelagin; William Buttlar; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Asphalt concrete; dynamic modulus; non-contact excitation; resonance testing; thermally induced damage; viscoelasticity; Asfaltbetong; beröringsfri excitation; resonansfrekvens; resonansprovning; styvhetsmodul; Building Materials; Byggnadsmaterial;

    Sammanfattning : Thetemperature induceddamage in asphalt mixtureshas always been a major distress that requires a substantialconsiderationin the asphalt industry. One of the most important aspects of studying temperature induceddamage is developing a practical test method for evaluation of the material’s resistanceto it. LÄS MER

  4. 38. Filtration of Microcrystalline and Microfibrillated Cellulose: The impact of ions and electric field

    Författare :Anna Hjorth; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microfibrillated cellulose; microcrystalline cellulose; ions; filtration; electro-assisted;

    Sammanfattning : Dewatering plays an essential role in the processing of microcrystalline cellulose (MCC) and microfibrillated cellulose (MFC), as their commercial attractiveness in many applications is limited by the high water content of the products. Filtration is the most common mechanical dewatering technique, but the filtration of these materials results in filter cakes with high filtration resistance. LÄS MER

  5. 39. Graphene Oxide Network Formation and Crosslinking in Polybenzoxazines and Poly[(R)-3-hydroxybutyrate]

    Författare :Carlos Rodriguez Arza; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The search for improvement of the physical properties of two very dissimilar polymeric materials is the aim of this doctoral thesis. The high performance properties of polybenzoxazines are tackled via the preparation of novel amino-functional benzoxazine monomers, as well as by the addition of graphene oxide (GO) for the preparation of polybenzoxazine nanocomposites. LÄS MER

  7. 40. Bioparticle Manipulation using Acoustophoresis and Inertial Microfluidics

    Författare :Muhammad Asim Faridi; Aman Russom; Martin Wiklund; Jonas Tegenfeldt; KTH; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biotechnology; Bioteknologi;

    Sammanfattning : Despite the many promising advances made in microfluidics, sample preparation remains the single largest challenge and bottleneck in the field of miniaturised diagnostics. This thesis is focused on the development of sample preparation methods using active and passive particle manipulation techniques for point of care diagnostic applications. LÄS MER