Sökning: "wrinkles"

Visar resultat 1 - 5 av 16 avhandlingar innehållade ordet wrinkles.

  1. 1. Waves and instabilities through the lens of asymptotic analysis

    Författare :Anthony Bonfils; John Wettlaufer; Dhrubaditya Mitra; Woosok Moon; Jerome Neufeld; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; waves; wrinkles; instabilities; Theoretical Physics; teoretisk fysik;

    Sammanfattning : Understanding the interaction of water waves with winds and marine currents is a fundamental problem in geophysical fluid dynamics. From the point of view of hydrodynamic stability, surface waves are regarded as perturbations of an inviscid parallel shear flow modeling the wind in the air and the current in the water. LÄS MER

  3. 2. Towards defect free forming of multi-stacked composite aerospace components using tailored interlayer properties

    Författare :Per Hallander; Malin Åkermo; Pascal Hubert; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carbon Fibre; Composites; Prepreg; Forming; Flyg- och rymdteknik; Aerospace Engineering;

    Sammanfattning : Use of lightweight materials is an important part of reduction of fuel consumption by commercial aircraft. A considerable number of structural aircraft parts are therefore built of thin layers of epoxy pre-impregnated carbon fibres stacked to laminates. LÄS MER

  4. 3. Improving Forming of Aerospace Composite Components through Process Modelling

    Författare :Jens Sjölander; Malin Åkermo; Per Hallander; Tonny Nyman; Göran Fernlund; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : In the aerospace industry there is a constant effort to reduce the weight of aircraft. Since weight reduction has a direct impact on fuel consumption. Reducing the fuel consumption leads to botheconomical benefits through less money spent on fuel and environmental benefits through reduced CO2 emissions. LÄS MER

  5. 4. Forming of stacked unidirectional prepreg materials

    Författare :Ylva Larberg; Malin Åkermo; Dan Zenkert; Kevin Potter; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SRA - Production; SRA - Produktion;

    Sammanfattning : To reduce cost of structural composites, the development of more efficient manufacturing methods is of great interest. An automatic tape layer (ATL) can be used to perform the layup in an efficient way for flat sheets and the second step is by pressure forming the prepreg stack onto a given mould. LÄS MER

  7. 5. Flexible and Stretchable Biointerfacing for Healthcare Diagnostics

    Författare :Mina Rajabi; Niclas Roxhed; Pelle Rangsten; KTH; []
    Nyckelord :Wearable biointerfacing sensor; flexible and stretchable microneedles patch; wearable microneedles device; health and fitness monitoring; minimally invasive ICP monitoring; bioelectronics; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Flexible and stretchable wearable biomedical devices provide a platform for continues long-term monitoring of biological signals during neutral body movements thus enabling early intervention and diagnostics of various diseases. This thesis evaluates novel flexible and stretchable bio interfacing medical devices based on microneedle patches and split ring resonator for healthcare diagnostics. LÄS MER