Essays about: "Crack growth rate"

Showing result 6 - 10 of 11 essays containing the words Crack growth rate.

  1. 6. Thermo-Mechanical Fatigue Assessment of Marine Boiler : Using linear Finite Element Analyses

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Adefemi Samuel Alagbada; [2020]
    Keywords : Marine Boiler; FEA; Thermo-mechanical Loading; LEFM; Paris law; Flaws; RAO.;

    Abstract : This thesis is on fatigue crack growth assessments of a thermomechanical loaded Marine Boiler- Sunrod CPDB12. The installation position of the marine boiler in the ship in relation to its fatigue life under mode 1 loading is investigated. READ MORE

  3. 7. Convergence properties of a continuum damage mechanics model for fatigue of adhesive joints

    University essay from Högskolan i Skövde/Institutionen för ingenjörsvetenskap

    Author : Axel Josefsson; Johan Wedin; [2014]
    Keywords : Adhesive joints; Cohesive elements; Convergence; Crack growth rate; Damage Mechanics; DCB; Element Size; Fatigue;

    Abstract : The effect of the element length is examined in modelling crack growth in fatigue loading of an adhesive joint. This is done for a cohesive element using an expression for the damage evolution developed at the University of Skövde which is implemented using the UMAT subroutine in the FE-solver Abaqus. READ MORE

  4. 8. Relations between the performance of a coated cutting tool and the composition and properties of the wear resistant coating : A study including first principles modeling, mechanical properties and technological testing

    University essay from Materialteori; Institutionen för kemi - Ångström

    Author : Maria Bryngelsson; [2013]
    Keywords : Thin film; coating; wear; density functional theory; first principles; ab initio; turning;

    Abstract : This thesis work was performed at AB Sandvik Coromant and aimed to enhance the knowledge about the relationships between the performance of TiN and TiAlN-coated cutting tools in metal turning and their mechanical and chemical properties. Measurements of coating material properties and turning wear tests in annealed tool steel Sverker 21, stainless steel 316L, grey cast iron V314 and nodular cast iron SS0727 were performed. READ MORE

  5. 9. Overload effects on the fatigue crack propagation behaviour in Inconel 718

    University essay from Hållfasthetslära; Tekniska högskolan

    Author : Erik Lundström; [2012]
    Keywords : Nickel-based superalloys; Inconel 718; fatigue crack propagation; high temperature hold times; overload effects;

    Abstract : In this master thesis, work done in the TURBO POWER project High temperature fatigue crack propagation in nickel-based superalloys during spring 2012 will be presented. The overall objective of this project is to develop and evaluate tools for designing against fatigue in gas turbine applications, with special focus on the crack propagation in the nickel-based superalloy Inconel 718. READ MORE

  6. 10. Optimering av sotningsfrekvens i biobränsleeldad CFB-panna : panna 5, Mälarenergi AB, Västerås

    University essay from SLU/Dept. of Energy and Technology

    Author : Anna Pettersson; [2008]
    Keywords : sotningsintervall; värmeöverföring; överhettare; ekonomiser; luftförvärmare; sotblåsare; sotningsmetod; sotning; CFB-panna;

    Abstract : During the past 30 years the fuels for energy production in heating and power plants have changed. Fossil fuels have decreased in usage whereas bio fuels in Sweden have increased with 60% since the 1970's. Different fuels affects combustion and the release of various substances and particles into the flue gas. READ MORE