Sökning: "Per Hallander"

Hittade 3 avhandlingar innehållade orden Per Hallander.

  1. 1. 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

  3. 2. Tooling and processing for efficient and high tolerance prepreg composite manufacturing

    Författare :Tommy Grankäll; Malin Åkermo; Per Hallander; Simon Bickerton; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tooling; Composite Manufacturing; Mould; Cure tool; Hot-forming; Compensation; Moisture; Shape distortion; Flyg- och rymdteknik; Aerospace Engineering;

    Sammanfattning : Composite use is normally motivated in aircraft design by improved weight-specific mechanical properties as compared to metals. However, fatigue and dielectric properties may also be critical for material selection. 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