Search for dissertations about: "fatigue crack growth"

Showing result 6 - 10 of 96 swedish dissertations containing the words fatigue crack growth.

  2. 6. Very high cycle fatigue of high performance steels

    Author : Vitaliy Kazymyrovych; Karlstads universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fatigue; tool steels; ultrasonic testing; fatigue life; crack growth rate; fatigue mechanisms; Materialteknik; Materials Engineering;

    Abstract : Many engineering components reach a finite fatigue life well above 109 load cycles. Some examples of such components are found in airplanes, automobiles or high speed trains. For some materials the fatigue failures have lately been found to occur well after 107 load cycles, namely in the Very High Cycle Fatigue (VHCF) range. READ MORE

  4. 7. Crack growth in single crystal gas turbine blade alloys under service-like conditions

    Author : Frans Palmert; Johan Moverare; David Gustafsson; Mikael Segersäll; Philippa A.S. Reed; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Single crystal superalloy; TMF; Crack growth; Crystallographic crack growth; Aging; Hold time; Creep crack growth;

    Abstract : This work concerns the fatigue crack growth behaviour of nickel base single crystal superalloys. The main industrial application of this class of materials is in gas turbine blades, where the ability to withstand severe mechanical loading in combination with high temperatures is required. READ MORE

  5. 8. Fatigue of Spot Welded Joints: Experiments and Life Predictions

    Author : Hans-Fredrik Henrysson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; crack closure; crack propagation; crack initiation; finite element method; damage accumulation; variable amplitude; fracture mechanics; fatigue; spot welds;

    Abstract : Methods to assess the fatigue strength of spot welds in built-up structures are used on a daily basis in the automotive industry. Efficient and reliable numerical methods make it possible to achieve designs with low weight, low manufacturing costs and good durability within short development cycles, since the number of prototypes built can be reduced. READ MORE

  6. 9. Engineering aspects of fatigue crack growth in metal

    Author : Tomas Månsson; KTH; []
    Keywords : Crack closure; FE-metod; Variable amplitude loading; Fatigue crack propagation.;

    Abstract : .... READ MORE

  7. 10. Modelling of surface initiated rolling contact fatigue crack growth using the asperity point load mechanism

    Author : Dave Hannes; Bo Alfredsson; Anders Ekberg; KTH; []
    Keywords : rolling contact fatigue; spalling; asperity; fatigue crack path; fatigue crack growth; mode I; plane mixed-mode; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : .... READ MORE