Sökning: "Tensile Stress"

Visar resultat 16 - 20 av 163 uppsatser innehållade orden Tensile Stress.

1. 16. Timber pile-supported road embankment : Numerical and analytical analysis of field monitoring project E4 Råneå

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Geoteknologi

   Författare :Kent Nystedt; [2022]
   Nyckelord :Geosynthetic reinforcement; Geosynthetic reinforced pile supported embankment; Pile distance; Embankment height; Finite element method; Pile efficacy;

   Sammanfattning : The previous E4 Råneå road embankment was prone to flooding. Risk of flooding in combination with settlements of the road due to the weak underlying sulphide soil was problematic. The Swedish Transportation Administration improved the length section E4 Råneå by rebuilding the road using the method light embankment piling. LÄS MER

3. 17. Design and evaluation of a shock load resistant dynamic chain plate

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Daniel Olsson; [2022]
   Nyckelord :Dynamic; chain; shock load; Simulink; FEA; conveyor; wear; experimental; Nordic Quick Systems; chain plate; Simulation; FEM;

   Sammanfattning : Conveyor chains are often subject to repetitive shock loads during normal operations. This can cause accelerated wear in the chain leading to premature chain replacementor chain failure (Otoshi, 1997, p. 4). In this thesis a new approach for reducingshock load related wear in conveyor chains is proposed. LÄS MER

4. 18. Effects of plastic pollution on leaf litter decomposition in Swedish freshwater ecosystems : a field study addressing recently and globally emerging pollutants

   Master-uppsats, SLU/Dept. of Aquatic Sciences and Assessment

   Författare :Martina Stangl; [2022]
   Nyckelord :Microplastics; Face masks; Ecosystem functioning; Leaf decomposition; Field study;

   Sammanfattning : Plastic pollution is recognized as an increasing environmental problem, but few studies have addressed impacts on ecosystem functions, and very few have been conducted in the field. This study investigated the effects of polypropylene particles derived from disposable face masks on in-situ leaf litter decomposition processes in freshwater ecosystems. LÄS MER

5. 19. Characterization of Fiber Orientation and Weld Line Effects in Reinforced Plastics with Reduced CO2eq Emissions

   Master-uppsats, Jönköping University/JTH, Material och tillverkning

   Författare :Anders Tolf; Markus Johannesson; [2022]
   Nyckelord :Fiber-reinforced plastics; GFRP; Reduced carbon dioxide equivalent materials; Experimental; Uniaxial tensile test; Uniform fiber orientation plate; Tensile strength; Fiber orientation; Weld line; Fracture analysis; Microscopy;

   Sammanfattning : With increasing emphasis and regulations on the environmental footprint in industries, the integration of reduced carbon dioxide equivalent (CO2eq) plastic materials is desirable. Fiber-reinforced plastic materials mechanical properties differ with varying fiber orientations. LÄS MER

7. 20. Mineral wool : From landfill to a sustaianble polymer composite

   Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

   Författare :Noéll Sjöbeck; [2022]
   Nyckelord :recycling; sustainability; waste management; circular economy; mineral wool; construction and demolition industry; composites; polymers; återvinning; hållbarhet; avfallshantering; cirkulär ekonomi; mineralull; bygg- och rivningsindustri; kompositer; polymerer;

   Sammanfattning : The focus of the project is recycling of the insulation material mineral wool. The aim is to investigate the potential of using post-consumer wool from landfill as fiber reinforcement in a polymer matrix. LÄS MER