Sökning: "viscoelasticity"

Visar resultat 16 - 20 av 79 avhandlingar innehållade ordet viscoelasticity.

1. 16. Thermally Induced Fracture Performance of Asphalt Mixtures

   Författare :Prabir Kumar Das; Björn Birgisson; Dallas Little; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Low temperature cracking; asphalt concrete fracture mechanics; viscoelasticity; non-linear thermal contraction coefficient; atomic force microscopy; wax; wax crystallization; SRA - Transport; SRA - Transport;

   Sammanfattning : A major distress mode in asphalt pavements is low temperature cracking, which results from the contraction and expansion of the asphalt pavement under extreme temperature changes. The potential for low temperature cracking is an interplay between the environment, the road structure and importantly the properties of the asphalt mixture. LÄS MER

3. 17. Moisture-Induced Strains and Stresses in Wood

   Författare :Sabina Huč; Staffan Svensson; E. Kristofer Gamstedt; Sigurdur Ormarsson; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mechanosorption; multi-Fickian moisture transport model; orthotropy; rheology; three-dimensional mechanical model; viscoelasticity; wood; Engineering science with specialization in Applied Mechanics; Teknisk fysik med inriktning mot tillämpad mekanik;

   Sammanfattning : To design safe, reliable and durable timber structures subjected to varying natural outdoor or indoor climates, understanding the long-term behavior of wood when mechanically loaded or restrained to deform is crucial. The present thesis focuses on the numerical modeling of the long-term mechanical behavior of wood. LÄS MER

4. 18. Soft Intelligence : Liquids Matter in Compliant Microsystems

   Författare :Seung Hee Jeong; Zhigang Wu; Zhi-Bin Zhang; Michael D. Dickey; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Liquid; Elastomer; Cross-linking; Liquid alloy; PDMS; Adaptability; Compliance; Interface; Patterning; Printing; Surface energy; Wetting; Composite; Modulus; Stretchability; Viscoelasticity; Thermal conductivity; Contact resistance; Adhesion; Packaging; Integration; Microsystems; Microfluidics; Strain sensor; Thermoelectrics; Inductive coupling; Wireless communication; Stretchable electron-ics; Epidermal electronics; Skin electronics; Soft robotics; Wearable electronics; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology; Engineering Science with specialization in Materials Science; Teknisk fysik med inriktning mot materialvetenskap;

   Sammanfattning : Soft matter, here, liquids and polymers, have adaptability to a surrounding geometry. They intrinsically have advantageous characteristics from a mechanical perspective, such as flowing and wetting on surrounding surfaces, giving compliant, conformal and deformable behavior. LÄS MER

5. 19. Decellularized liver extracellular matrix as a 3D scaffold for bioengineering applications

   Författare :Vamakshi Khati; Aman Russom; Håkan Jönsson; Giulia Gaudenzi; Ana Teixeira; KTH; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; liver decellularization; decellularized liver matrix bioink; bioprinting; sacrificial scaffold; viscoelasticity; bioengineering; tumor modeling; stem cell differentiation; bioreactor; Biotechnology; Bioteknologi;

   Sammanfattning : The increasing global burden of end-stage liver disease has increased the need for liver transplantation, the definitive cure. However, there is a huge discrepancy between the number of available organ donors and the number of patients waiting for transplantation, resulting in the deaths of a significant number of patients on the waiting list as only 10% of the global need for transplantation is met. LÄS MER

7. 20. Vehicle-Pavement Interaction

   Författare :Parisa Khavassefat; Björn Birgisson; Denis Jelagin; David Cebon; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Finite element; Viscoelasticity; Moving load; Dynamic axle loads; Road roughness; Flexible pavement; Stochastic;

   Sammanfattning : Several aspects of vehicle-pavement interaction have been studied and discussed in this thesis. Initially the pavement response is studied through a quasi-static and a dynamic computationally efficient framework under moving traffic loads. LÄS MER