Sökning: "Prepreg"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet Prepreg.

  1. 1. Deformability of unidirectional prepreg materials

    Författare :Ylva Larberg; Malin Åkermo; Patrik Fernberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; prepreg; deformability; carbon composite; Vehicle engineering; Farkostteknik;

    Sammanfattning :  To reduce cost of structural composites the development of more efficient manufacturing methods is of great interest. Sheet forming of thermoset prepreg, also known as hot drape forming, has been a promising manufacturing method for decades. An automatic tape layer (ATL) can be used to perform the lay-up in an efficient way. 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. 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

  5. 4. Automated layup and forming of prepreg laminates

    Författare :Andreas Björnsson; Kerstin Johansen; Mats Björkman; Marie Jonsson; Lars Pejryd; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Composite materials like carbon fiber-reinforced polymers (CFRPs) present highly appealing material properties, as they can combine high strength with low weight. In aerospace applications, these properties help to realize lightweight designs that can reduce fuel consumption. LÄS MER

  7. 5. 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