Essays about: "Thermal cracking model"
Showing result 1 - 5 of 15 essays containing the words Thermal cracking model.
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1. Modelling of Laser Welding of Aluminium using COMSOL Multiphysics
University essay from KTH/MaterialvetenskapAbstract : This thesis presents a modelling approach of laser welding process of aluminium alloy from the thermo-mechanical point of view to evaluate the occurrence of hot cracking based on simulation results and relevant criteria. The model was created stepwise in COMSOL Multiphysics, starting with the thermal model where heat conduction of solid and liquid phase was computed. READ MORE
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2. Cracking in a slender concrete slab due to thermal variation
University essay from KTH/BetongbyggnadAbstract : Concrete slabs used in thepulp and paper industries are often situated outdoors, which means that theslabs are exposed to temperature variations due to different weatherconditions. These temperature variations together with operational temperaturesassociated with the manufacturing process, may introduce high temperaturegradients in the concrete. READ MORE
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3. Basic Creep of Young Concrete - Sensitivity in the Evaluation Method
University essay from KTH/BetongbyggnadAbstract : Creep is defined as deformation that takes place under constant load after an initial elastic response. This thesis focuses on a material property problem area that concerns stress analysis. Focus is on stress development considering creep deformations occurring when a concrete structure is under load, i.e. READ MORE
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4. Simulation of Hardening of the MahanaKhon Tower Mat Foundation
University essay from KTH/BetongbyggnadAbstract : Cement hydration is the result of a series of simultaneous chemical reactions occurring during the production of concrete. An excessive amount of heat is generated, which consequently may give rise to thermal stresses and cause early age cracks in concrete that may affect its structural integrity, and load bearing capacity. READ MORE
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5. Crack propagation calculations in non-elastic metals
University essay from Luleå tekniska universitet/Material- och solidmekanikAbstract : It is important to know the lifespan of a component, thus services can be planed. At Siemens Industrial Turbomachinery AB (SIT AB) develop and produce gas and steam turbines, the turbines are heavily strained by thermal and centrifugal forces during their life span which lead to cracking. READ MORE