Search for dissertations about: "toughness"

Showing result 6 - 10 of 239 swedish dissertations containing the word toughness.

  2. 6. The fracture mechanisms in duplex stainless steels at sub-zero temperatures

    Author : Johan Pilhagen; Pavel Korzhavy; Rolf Sandström; Kim Wallin; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Duplex stainless steel; Weldments; Delamination; Fracture toughness; Impact toughness; Cleavage fracture; Nickel;

    Abstract : The aim of the thesis was to study the susceptibility for brittle failures and the fracture process of duplex stainless steels at sub-zero temperatures (°C). In the first part of the thesis plates of hot-rolled duplex stainless steel with various thicknesses were used to study the influence of delamination (also known as splits) on the fracture toughness. READ MORE

  4. 7. Mechanical Recycling of Engineering Thermoplastics using Alloying Techniques

    Author : Xiaodong Liu; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sandwich injection moulding; recycling; compatibilizer; in-situ compatibilization; engineering thermoplastics; J-integral; toughness; impact modifier;

    Abstract : The aim of this thesis is to indicate routes by which recycled engineering thermoplastics (ETP) can be upgraded using alloying techniques. Recycled ETP have often been subjected to long-term service-induced degradation, so that the residual properties of recycled ETP need to be improved. READ MORE

  5. 8. Utilization of Wild Fruit in Mozambique – Drying of Vangueria infausta (African medlar)

    Author : Eulália Chiau; Livsmedelsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vangueria infausta; drying; maltodextrin; sucrose; softener; toughness; solar-assisted pervaporation; aroma; crystallization; water activity;

    Abstract : Vangueria infausta (African medlar) is a wild fruit found in southern and central Mozambique. The ripe fruit has a leathery skin enclosing three to five seeds embedded in a soft pulp that tastes like apple. It plays an important role in the diet of the rural population and has the potential for commercial use. READ MORE

  6. 9. Toughness of short fiber composites : an approach based on crack-bridging

    Author : Patrik Fernberg; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Abstract : The presented work considers how to properly characterize fracture properties of short fiber composites (SFC). Associated with fracture of SFC is the creation of a comparably widespread fracture process zone. This zone develops since a number of inelastic failure mechanisms (e.g. READ MORE

  7. 10. Microstructure and mechanical properties of chromium steel weld metals

    Author : Guang-Jun Cai; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; CrMo steel; phase transformation; weld metal; toughness; microstructure; precipitate; strength;

    Abstract : .... READ MORE