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Showing result 1 - 5 of 129 swedish dissertations matching the above criteria.
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1. Fatigue and Fracture of High-Strength Steels : Improving Reliability in Strength Assessment
Abstract : Structural steel plays a fundamental role in the heavy industry, serving as a key material for numerous load-bearing products and equipment. Its widespread use is attributed to its robustness, resistance to wear, ease of use in construction, and cost-effectiveness. READ MORE
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2. High strength steel : local buckling and residual stresses
Abstract : High strength steel provide designers with the possibility of creating more slender and weight efficient structures than would be possible if using steels with lower strength. To be able to do this, a structural designer needs updated and validated codes as aid in their work. READ MORE
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3. Very high cycle fatigue of automotive steels : Testing and computation at 20 kHz
Abstract : Mechanical fatigue failure occurs in components subjected to cyclic loading. A crack initiates at critical regions in the component and propagates during repeated loading. The expected fatigue life depends on the level, type and frequency of the loading. READ MORE
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4. Galling of high strength steels and stainless steels in sheet metal forming as evaluated using pin-on-disc testing
Abstract : The thesis focuses on the problem galling in sheet metal forming operations. Galling occurs when sheet metal transfers from the sheet surface onto the tool surface and causes surface damages to following sheets in the forming operation. When this happens the tool must be replaced causing production stops and additional expenses. READ MORE
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5. Very high cycle fatigue of high performance steels
Abstract : Many engineering components reach a finite fatigue life well above 109 load cycles. Some examples of such components are found in airplanes, automobiles or high speed trains. For some materials the fatigue failures have lately been found to occur well after 107 load cycles, namely in the Very High Cycle Fatigue (VHCF) range. READ MORE