Search for dissertations about: "welding of high strength steels"

Showing result 1 - 5 of 23 swedish dissertations containing the words welding of high strength steels.

  2. 1. Challenges in Resistance Welding of Ultra High Strength Steels

    Author : Erik Tolf; Arne Melander; Zuheir Barsoum; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Resistance welding; spot welding; surface cracks; nut welding; UHSS; projection welding; Teknisk materialvetenskap; Materials Science and Engineering;

    Abstract : Increasing the use of Ultra High Strength Steels (UHSS) in vehicle bodystructures is important for reducing weight and cutting CO2 emissions. This thesis investigates challenges in resistance welding that can be a barrier to implementing UHSS as a replacement for low strength steels in vehicle structures. READ MORE

  4. 2. Fatigue and Fracture of High-Strength Steels : Improving Reliability in Strength Assessment

    Author : Gustav Hultgren; Zuheir Barsoum; Rami Mansour; Torbjörn Narström; Gary Marquis; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High-Strength Steel; Quality assurance; Probabilistic modeling; Fatigue; Fracture mechanics; Farkostteknik; Vehicle and Maritime Engineering;

    Abstract : Structural steel plays a fundamental role in the heavy industry, serving as a key material for numerous load-bearing products and equipment. Its widespread use is attributed to its robustness, resistance to wear, ease of use in construction, and cost-effectiveness. READ MORE

  5. 3. Laser welding and laser heat treatment of high strength steels

    Author : Stephanie Robertson; Alexander Kaplan; Jan Frostevarg; Antti Salminen; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Laser welding; heat treatment; high strength steel; Snapshot method; microstructure; Produktionsutveckling; Manufacturing Systems Engineering;

    Abstract : Laser materials processing, including thermal treatment and laser welding has been undergoing continuous growth in the manufacturing industry for decades. A laser beam offers high precision and energy transfer, capable of various processing. READ MORE

  6. 4. High strength steel : local buckling and residual stresses

    Author : Mattias Clarin; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel Structures; Stålbyggnad;

    Abstract : High strength steel provide designers with the possibility of creating more slender and weight efficient structures than would be possible if using steels with lower strength. To be able to do this, a structural designer needs updated and validated codes as aid in their work. READ MORE

  7. 5. Fatigue properties of cut and welded high strength steels : Quality aspects in design and production

    Author : Thomas Stenberg; Zuheir Barsoum; Kenneth Alasdair MacDonald; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Welding; Fatigue assessment; Cutting; Weld quality; Fatigue design; Fracture Mechanics; Vehicle and Maritime Engineering; Farkostteknik;

    Abstract : This doctoral thesis concerns fatigue of welded structures. Welding is one of the world’s most common joining methods and it is frequently used in several structural applications in many fields. Some examples are construction vehicles, loader cranes, trucks, busses, forestry and agricultural machines, bridges and ships. READ MORE