Search for dissertations about: "fatigue"

Showing result 1 - 5 of 749 swedish dissertations containing the word fatigue.

  1. 1. Very high cycle fatigue of high performance steels

    University dissertation from Karlstad : Karlstad University

    Author : Vitaliy Kazymyrovych; Karlstads universitet.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materialteknik; Materials Engineering; fatigue; tool steels; ultrasonic testing; fatigue life; crack growth rate; fatigue mechanisms;

    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

  2. 2. Fatigue strength of engineering materials the influence of environment and porosity

    University dissertation from Stockholm : KTH

    Author : Jan Linder; KTH.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Stainless steel; cast aluminium; hardened steels; fatigue; corrosion; crack propagation; spot weld; porosity; TECHNOLOGY Materials science Other materials science; TEKNIKVETENSKAP Teknisk materialvetenskap Övrig teknisk materialvetenskap;

    Abstract : The objective of this work was to use LEFM in order to assess the detrimental influence of surrounding chloride-containing environments for stainless steels, hardened steel as well as for a cast aluminium alloy. An additional aim was also to use LEFM to assess the influence of porosity on the fatigue properties for different commercial cast aluminium alloys and manufacturing methods. READ MORE

  3. 3. Fatigue Assessment of Cast Components Influence of Cast Defects

    University dissertation from Stockholm : KTH

    Author : Anders Björkblad; KTH.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cast nodular iron; fatigue; design rules; fracture mechanics; TECHNOLOGY Engineering mechanics Vehicle engineering; TEKNIKVETENSKAP Teknisk mekanik Farkostteknik;

    Abstract :  This thesis is on the fatigue assessment of cast components with special attention to defects. The primary material in view is nodular cast iron, but also cast steel is considered. However, the fatigue behaviour is in principle valid for general use on other cast metals. READ MORE

  4. 4. Direct Calculation of Wave-Induced Loads and Fatigue Damage of Container Vessels

    University dissertation from Chalmers University of Technology

    Author : Zhiyuan Li; Chalmers tekniska högskola.; Chalmers University of Technology.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Matematisk statistik; Mathematical statistics; Farkostteknik; Vehicle engineering; Container ship; direct calculation; extreme loading; fatigue; fatigue routing; nonlinear wave loads; stress concentration factor; wave-induced torsion.;

    Abstract : Container ships and their rules for fatigue design are in several ways different compared with other types of commercial ships such as tankers and bulk carriers. For example, most modern container ships have a pronounced bow flare and an overhang stern. READ MORE

  5. 5. Fatigue in individuals with multiple sclerosis : lived experiences and perceived impact in daily life

    University dissertation from Linköping : Linköping Universitet

    Author : Gullvi Flensner; Högskolan Väst.; Linköpings universitet.; Linköpings universitet.; [2005]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; INTERDISCIPLINARY RESEARCH AREAS Caring sciences Nursing; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN Vårdvetenskap Omvårdnad; Vårdvetenskap; Nursing science; Activities of daily living; multiple sclerosis; fatigue; MEDICINE; MEDICIN; action-theory; cooling; daily life; perceived health; phenomenology; scale testing;

    Abstract : The overall aim of this thesis was to gain knowledge about experiences of fatigue among individuals diagnosed with MS and to compare these experiences with those of individuals in the general population. Individuals' experiences of fatigue have been approached both inductively and deductively and qualitative and quantitative research methods have been combined. READ MORE