Sökning: "elastic stiffness"

Visar resultat 1 - 5 av 152 avhandlingar innehållade orden elastic stiffness.

1. 1. Tactile sensing of prostate cancer : a resonance sensor method evaluated using human prostate tissue in vitro

   Författare :Ville Jalkanen; Olof Lindahl; Britt Andersson; Tomas Jansson; Umeå universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tactile resonance sensor; prostate tissue; prostate cancer; stiffness; density; elastic; variations; tissue histology; Medical engineering; Medicinsk teknik;

   Sammanfattning : Prostate cancer is the most frequent type of cancer in men in Europe and the USA. The methods presently used to detect and diagnose prostate cancer are inexact, and new techniques are needed. LÄS MER

3. 2. Local variability in chemical and physical properties of spruce wood fibers

   Författare :Anna Bergander; KTH; []
   Nyckelord :cell walls; chemical composition; elastic constants; elastic strength; Fiber properties; Fibril angles; Mathematical models; Microscopy techniques; Picea Abies; Stiffness; Tensile properties; Wood polymers; Wood;

   Sammanfattning : Wood is well known to be a heterogeneous native materialwith large variations in its composite properties, includingvariations whose origins have not yet been completelyidentified. Traditionally, the macroscopic variations in woodhave received the most attention; for example, the variation indensity from the pith to the bark in trees. LÄS MER

4. 3. Structural Design of Laser-Welded Sandwich Panels for Marine Applications

   Författare :Hans Kolsters; KTH; []
   Nyckelord :Sandwich; Laser welding; Web; Core; Stiffness; Elastic Buckling; Ultimate strength; Finite element analysis; Mechanical testing; Optimisation.;

   Sammanfattning : In shipbuilding the replacement of stiffened platestructures by laser-welded sandwich panels offers considerableadvantages for production as well as vessel operation. In viewof reduced weight and space requirements an area of particularinterest is the incorporation of an adhesively bonded core bywhich the stiffness and strength can be substantiallyincreased, and thermal-acoustic insulation can be integrated. LÄS MER

5. 4. Process-induced disorder of pharmaceutical materials : Mechanisms and quantification of disorder

   Författare :Samaneh Pazesh; Göran Alderborn; Jonas Berggren; Niklas Sandler; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Milling; Comminution; Powder flow; Amorphisation; Raman spectroscopy; Atomic force microscopy; Plastic stiffness; Elastic stiffness; Pharmaceutical Science; Farmaceutisk vetenskap;

   Sammanfattning : One of the most important prerequisites in the drug development is to attain a reproducible and robust product in terms of its nature, and its chemical and physical properties. This can be challenging, since the crystalline form of drugs and excipients can be directly transformed into the amorphous one during normal pharmaceutical processing, referred to as process-induced amorphisation or process-induced disorder. LÄS MER

7. 5. Hygro-Mechanics of Wood Fibre Composite Materials

   Författare :Kristian Stålne; Byggnadsmekanik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; homogenisation; Wood composite materials; modelling; stiffness; hygroexpansion; creep; mechanosorption;

   Sammanfattning : The work presented in this thesis deals with modelling and testing of hygro-mechanical properties of wood fibre composite materials. The material studied experimentally is high pressure laminate, HPL, which is a wood fibre network composite, made up of craft paper impregnated with phenolic or melamine resin. LÄS MER