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81	Assessment of fatigue for laser-scanned weld surfaces : Correlation between weld geometry and fatigue initiation Hultgren, Gustav January 2019 (has links) The work conducted in this project proposes a method to determine the location of fracture initiation for non-load carrying fillet welds based on continuous geometry measurements. Measurements were carried out on welded specimens using a laser line triangluator together with the weld quality evaluation software qWeld from Winteria®. The 119 specimens produced were after scanning fatigue tested until failure. The fracture surfaces have been investigated in order to find the most probable location(s) of fracture initiation. This data was then used to fit the proposed model parameters used to analytically predict the point(s) of fracture initiation. Local weld geometry measurements were extracted from the predicted fracture initiation location(s) in an effort to analyse the correlation between local weld geometry and fatigue life. This showed that fatigue life and leg length were positively correlated and that strong correlations exists between the individual geometrical parameters. New specimens were produced to test the fitted data of the proposed model, this data was however inconclusive as the new specimens had a high ratio of weld defects. / Arbetet i detta projekt föreslår en metod för att bestämma punkten/punkterna för sprickinitiering för icke-lastbärande kälsvetsar baserat på kontinuerliga mätmetoder. Mätningar utfördes på svetsade prover med hjälp av en laserlinjetriangluator tillsammans med utvärderingsprogrammet qWeld från Winteria®. De 119 provstavar som producerades testades efter mätningarna med en cyklisk belastning till de gick till brott. Brottytorna undersöktes sedan för att hitta platsen/platserna för de mest sannolika startpunkterna. Dessa punkter användes sedan för att passa de föreslagna modellparametrarna som användes för att förutsäga startpunkten. Lokal svetsgeometri extraherades från de förutsagda sprickinitieringsplatserna i ett försök att analysera korrelationen mellan lokal svetsgeometri och antalet cykler till brott. Detta visade att antalet cykler och katetlängden var positivt korrelerade och att det finns starka korrelationer mellan de enskilda geometriska parametrarna. Nya provbitar framställdes för att testa de anpassade parametrarna i den framtagna metoden, dessa gav dock inga tydliga resultat då en hög andel svetsdefekter upptäcktes efter att de provats. Applied Mechanics Teknisk mekanik
82	Konstruktion av tiltmekanism : Tiltmekanism för slaga / Construction of tiltmechanism : Tiltmechanism for bushcutter Enfros, Filip January 2018 (has links) No description available. Applied Mechanics Teknisk mekanik
83	Prediction of stresses in granular media by an integral method Fekete, N. January 1990 (has links) No description available. Applied Mechanics. Engineering, Civil.
84	Seismic response of steel beams coupling concrete walls Harries, Kent A. (Kent Alexander) January 1992 (has links) No description available. Engineering, Civil. Applied Mechanics.
85	The role of marl components and ettringite on the stability of stabilized marl / Ouhadi, Vahid Reza. January 1997 (has links) No description available. Applied Mechanics. Engineering, Civil.
86	A combined approach for analysis of single crystal nickel base superalloys / Bande, Gilbert. January 2001 (has links) No description available. Applied Mechanics. Engineering, Mechanical.
87	The geometry of Gaussian rotation space random fields / Shafie H., Khalil. January 1998 (has links) No description available. Applied Mechanics. Statistics.
88	Seismic site effects for the Island of Montreal Talukder, Mohammad January 2018 (has links) No description available. Civil Engineering and Applied Mechanics
89	The kinematics and workspace analysis of platform mechanisms / Bulca, Ferhan. January 1998 (has links) No description available. Applied Mechanics. Engineering, Mechanical.
90	The development of bond between a steel beam and a superimposed concrete slab Kirk, William Douglas January 1936 (has links) No description available. Civil engineering and applied mechanics.

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