Sökning: "Lightweight structure"

Visar resultat 21 - 25 av 68 avhandlingar innehållade orden Lightweight structure.

  1. 21. Mechanical Properties of Resistance Spot Welds in Lightweight Applications

    Författare :Davood Afshari; Zuheir Barsoum; Arne Melander; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Spot Weld; Aluminum alloy; Mechanical Properties; Finite Element; SRA - Production; SRA - Produktion;

    Sammanfattning : This licentiate thesis is concerned with residual stresses in aluminum alloy 6061-T6 resistance spot welded joint. Several topics related to mechanical strength of welded structures are treated such as; nugget size and microhardness and microstructures of weld zone and their influence on mechanical strength of welded structure, failure load measurement using tensile-shear test, resistance spot welding simulation, residual stress measurement by X-ray diffraction method and analysis effect of welding parameters on the mechanical strength and the residual stresses. LÄS MER

  3. 22. Textile architecture informed by wind

    Författare :Erica Hörteborn; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; Textiles; Research by design; Textile architecture; Kinetic architecture; Lightweight structures; Wind; Geometric expression; Knitted textiles;

    Sammanfattning : Textiles in architecture is a field of great potential, which are worth to explore further. This thesis aims to show that the flexibility of the textile material could be better included in the architectural design, allowing it to adapt to forces, such as the wind, and viewing motion as a positive design feature. LÄS MER

  4. 23. Recyclable self-reinforced ductile fiber composite materials for structural applications

    Författare :Christof Schneider; Dan Zenkert; Sohrab Kazemahvazi; Malin Åkermo; Ignace Verpoest; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Self-reinforced polymer; Composite; sandwich structure; mechanical properties; impact behaviour; finite element; Farkostteknik; Vehicle and Maritime Engineering;

    Sammanfattning : Lightweight structures in vehicles are a proven way to reduce fuel consumption and the environmental impact during the use. Lower structural weight can be achieved by using high performance materials such as composites or using the material efficiently as a sandwich structure. LÄS MER

  5. 24. Opportunities for Weight Reduction in Composite Marine Structures

    Författare :Luis Felipe Sanchez Heres; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; material characterization; ultimate limit state; composites; lightweight design; non-crimp fabrics;

    Sammanfattning : Composite marine structures are desirable for a variety of reasons. Compared to traditional steel structures, they enable the construction of vessels with lower fuel consumption, higher top speed, better stability, lower maintenance, higher cargo capacity, or combinations thereof. LÄS MER

  7. 25. Lightweight consistency checking for advancing continuous model-based development in industry

    Författare :Robbert Jongeling; Jan Carlson; Antonio Vallecillo; Mälardalens universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer Science; datavetenskap;

    Sammanfattning : For the development of modern software-intensive systems, a large number of development artifacts are created and maintained to design and implement their intended structure and behavior. In this thesis, we consider continuous model-based development settings in which models and other development artifacts are developed incrementally, in short development cycles. LÄS MER