Search for dissertations about: "Crack closure"

Showing result 1 - 5 of 28 swedish dissertations containing the words Crack closure.

  1. 1. High Strain Fatigue Crack Growth and Crack Closure

    University dissertation from Department of Mechanical Engineering, Lund University

    Author : Michael Andersson; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; materialteknik; Materiallära; Material technology; crack closure; high strain fatigue; crack grotwh;

    Abstract : Understanding of the growth of fatigue cracks is of utmost importance since such growth often has a profound influence on the life of components subjected to cyclic loading. Thus, reliable fatigue life models enable a more efficient use of materials and improve the performance and efficiency in many applications. READ MORE

  2. 2. Thermo-mechanical Fatigue Crack Propagation in Inconel 718

    University dissertation from Materials Engineering

    Author : Lars Jacobsson; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; crack closure; image analysis; potential drop; in-situ scanning elecron microscopy; crack propagation experiments; Thermo-mechanical fatigue; Inconel 718;

    Abstract : Thermo-mechanical fatigue crack propagation in Inconel 718 has been studied with different methods. In-situ observations with a scanning electron microscope (SEM) were performed, the crack propagation process was followed cycle by cycle and the influences from load, temperature, and microstructure on the crack growth were analyzed. READ MORE

  3. 3. Engineering aspects of fatigue crack growth in metal

    University dissertation from Stockholm : Hållfasthetslära

    Author : Tomas Månsson; KTH.; [2002]
    Keywords : Crack closure; FE-metod; Variable amplitude loading; Fatigue crack propagation.;

    Abstract : .... READ MORE

  4. 4. Fatigue crack growth experiments and analyses - from small scale to large scale yielding at constant and variable amplitude loading

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Pär Ljustell; KTH.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fracture mechanics; fatigue crack growth; finite elements analysis; small scale yielding SSY ; large scale yielding LSY ; low cycle fatigue LCF ; crack tip opening displacement CTOD ; crack closure; potential drop method; constant amplitude load; variable amplitude load; inconel 718; stainless steel 316L;

    Abstract : This thesis is on fatigue crack growth experiments and assessments of fatigue crack growth rates. Both constant and variable amplitude loads in two different materials are considered; a nickel based super-alloy Inconel 718 and a stainless steel 316L. READ MORE

  5. 5. Growth of fatigue cracks subjected to non-proportional Mode I and II

    University dissertation from Stockholm : KTH

    Author : Peter Dahlin; KTH.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fatigue crack growth; Mode II overloading; Crack closure; Sequential mixed mode loading; TECHNOLOGY Engineering mechanics Other engineering mechanics; TEKNIKVETENSKAP Teknisk mekanik Övrig teknisk mekanik;

    Abstract : This thesis deals with some aspects of crack growth in the presence of cyclic loading, i.e. fatigue. The cyclic load cases studied here are primary of non-proportional mixed mode type. READ MORE