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Showing result 1 - 5 of 15 essays matching the above criteria.

1. 1. 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. 2. Mapping and characterisation of surface damage and wear mechanisms in gun barrels : Gun barrels exposed to cyclic thermo-mechanical loading

   University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

   Author : Martin Perkovic; [2020]
   Keywords : Wear; erosion; sliding wear; gun barrel; characterisation;

   Abstract : Gun barrels are an important component in advanced defence systems. The gun barrels are used for direct and indirect fire and the material of the gun barrel is exposed to great strains and high temperatures. This sets high demands on the material of the gun barrel. During firing the gun barrel can be damaged. READ MORE

4. 3. Influence of nitrocarburization on the thermomechanical fatigue properties of ductile iron for exhaust components : Analysis and comparisons of TMF-properties

   University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

   Author : Karl Larsson; [2019]
   Keywords : Thermo-mechanical fatigue; low cycle fatigue; thermal strain; ductile cast iron; nitrocarburizing;

   Abstract : New stricter environmental legislation requires lower emissions and fuel consumption of automotive engines. Therefore the fuel efficiency must be increased but this leads to higher loads in the engine. As for the exhaust system it is affected by higher thermomechanical loads. READ MORE

5. 4. Material parameter study for aheavy-vehicle exhaust manifoldusing the finite element method : to increase component lifetime and decrease its environmental impact

   University essay from Linköpings universitet/Konstruktionsmaterial

   Author : David Ek; [2019]
   Keywords : Thermomechanical fatigue; TMF; material parameter study; finite element method; FEM;

   Abstract : The thesis originates from a need to meet stricter environmental regulations for Scania, to reduce fuel consumption and emission from heavy-vehicles. Scania aims to fulfil these requirements by increasing combustion pressure and temperature. These conditions are tougher for the engine components and they shorten their lifetime. READ MORE

6. 5. Effect of dwell time on stress intensity factor of ferritic steel for steam turbine applications

   University essay from Linköpings universitet/Mekanik och hållfasthetslära

   Author : Ahmed Azeez; [2018]
   Keywords : ;

   Abstract : In the transition from conventional to green energy production resources, steam turbines are used to satisfy the lack of energy during peaks in the demand times and the limited access of renewable resources. This type of usage for steam turbines makes them operate on a flexible schedule, which leads to unpredictable issues related to shorter component life and faster crack propagation. READ MORE