Sökning: "Porosity"

Visar resultat 11 - 15 av 386 avhandlingar innehållade ordet Porosity.

1. 11. The mechanisms controlling heat and mass transfer on frying of beefburgers

   Författare :Bea Kovácsné Oroszvári; Livsmedelsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Livsmedelsteknik; Food and drink technology; permeability; porosity; contraction; frying; beefburger; heat and mass transfer;

   Sammanfattning : The aim of the present work was to gain better understanding of the mechanisms controlling heat and mass transfer during thermal processing of beefburgers. The effects of different factors such as the chemical composition and comminution of the meat raw material, the pan temperature and the meat patty diameter on the characteristics of heat and mass transfer were studied. LÄS MER

3. 12. Microstructure and mechanical properties of Ti-6Al-4V welds produced with different processes

   Författare :Sakari Tolvanen; Chalmers University of Technology; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fatigue; welding; porosity; microstructure; defects; Ti-6Al-4V;

   Sammanfattning : Titanium alloys are widely used for components in the fan and compressor sections of aeroengines mainly because of their superior strength-to-weight ratio. Large static compressor components can be manufactured by welding together smaller subcomponents, which has potential to provide benefits such as higher buy-to-fly ratio and improved performance of the components. LÄS MER

4. 13. Nanocellulose and Polypyrrole Composites for Electrical Energy Storage

   Författare :Gustav Nyström; Maria Strömme; Leif Nyholm; Petr Novák; Uppsala universitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; conducting polymer; polypyrrole; cellulose; nanocellulose; porosity; composite; energy storage; battery; supercapacitor; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

   Sammanfattning : To meet the predicted increase in demand for energy storage in tomorrow's society, the development of inexpensive, flexible, lightweight and sustainable energy-storage materials is essential. In this respect, devices based on electroactive organic molecules, such as conducting polymers, are highly interesting. LÄS MER

5. 14. Processing and Properties of Expanded Starch Materials

   Författare :Mia Sjöqvist; Chalmers University of Technology; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; amylopectin; extrusion; starch; porosity; foams; moisture content; amylose; microwave treatment; absorption;

   Sammanfattning : The need to strive towards a more sustainable development of the society is becoming increasingly urgent. As the population of the world is growing so is society´s impact on the environment. This is causing environmental problems with growing amounts of waste. LÄS MER

7. 15. On the processing of starch consolidated high speed steel - Microstructure and tribological properties

   Författare :Peter Harlin; Chalmers University of Technology; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tribological properties; green body; microstructure; porosity; high speed steel; Starch consolidation; super solidus liquid phase sintering; mechanical properties;

   Sammanfattning : This thesis focuses on processing of high speed steel (HSS) powder into components using starch consolidation (SC) and supersolidus liquid phase sintering (SLPS). The work consists of four parts. First, the possibilities and constrains of the SC process are investigated and the role of starch in the green body fabrication clarified. LÄS MER