Search for dissertations about: "Fracture Toughness Testing"

Showing result 1 - 5 of 22 swedish dissertations containing the words Fracture Toughness Testing.

  1. 1. Toughness of Tool Steel

    University dissertation from Uppsala : Institutionen för teknikvetenskaper

    Author : Henrik Jesperson; Uppsala universitet.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Toughness; Tool Steel; Heat Treatment; Temperature; Energy absorption; Impact Testing; Fracture Toughness Testing; Non-metallic Inclusions; Carbides; Nitrides; Statistics; TECHNOLOGY; TEKNIKVETENSKAP; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

    Abstract : Toughness is the ability to resist tensile stresses in the presence of a notch or crack. Sometimes gross cracking of industrial tools, mould or dies, occurs due to insufficient toughness. As the economic consequences of the gross cracking are serious, the toughness of industrial tool material, generally tool steel, is of paramount importance. READ MORE

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

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Johan Pilhagen; KTH.; [2013]
    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

  3. 3. Tensile fracture of ice test methods and fracture mechanics analysis

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Lars Stehn; Luleå tekniska universitet.; [1993]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Abstract : This thesis is concerned with several aspects of fracture of both brackish (low salinity) sea ice and freshwater ice. The tests and analyses are confined to tensile, or in fracture mechanics language, Mode I, fracture. READ MORE

  4. 4. Low Frequency Acoustic Excitation and Laser Sensing of Vibration as a Tool for Remote Characterization of Thin Sheets

    University dissertation from Karlskrona : Blekinge Institute of Technology

    Author : Etienne Mfoumou; Blekinge Tekniska Högskola.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nondestructive testing; remote acoustics; slow dynamics; nonequilibrium dynamics; resonance frequency; material characterization; vibration-based technique; fracture toughness;

    Abstract : There is a need to monitor the existence and effects of damage in structural materials. Bulk components provide a much publicized example, but the need exists in a variety of other structures, such as layered materials used in food packaging industries. READ MORE

  5. 5. Delayed Hydride Cracking in Irradiated Zircaloy

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Pål Efsing; KTH.; KTH.; [1998]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solid Mechanics; Hållfasthetslära; Hydrides; hydrogen; embrittlement; delayed cracking; fracture toughness; fracture resistance;

    Abstract : Under some circumstances nuclear fuel cladding tubes made from zirconium based alloys may develop long axial cracks. The formation of these cracks is mainly thought to be connected with the oxiditian and hydriding of the cladding which takes plage after the the formation of a small primary defect. READ MORE