Sökning: "Contact free analysis"

Visar resultat 11 - 15 av 82 avhandlingar innehållade orden Contact free analysis.

1. 11. Advanced measurement and modelling methods for noise source analysis

   Författare :Matti Rantatalo; Mats Åbom; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk akustik; Engineering Acoustics;

   Sammanfattning : In daily life sound is a vital dimension for the perception of the world around us but can in some cases be considered as annoying, irritating, or even harmful. In these cases the sound is labelled as noise and can be addressed in two ways, either by insulating the noise problem from the receiver (person) or by altering the source. LÄS MER

3. 12. Inflation Mechanics of Hyperelastic Membranes

   Författare :Amit Patil; Anders Eriksson; Arne Nordmark; Reijo Kouhia; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Membrane Mechanics; Inflation; Adhesive Contact; Instabilities; Bifurcation; Limit Point; Teknisk mekanik; Engineering Mechanics;

   Sammanfattning : The applications of inflatable membrane structures are increasing rapidly in the various fields of engineering and science. The geometric, material, force and contact non-linearities complicate this subject further, which in turn increases the demand for computationally efficient methods and interpretations of counter-intuitive behaviors noted by the  scientific community. LÄS MER

4. 13. Modeling of Elasticity and Damping for Filled Elastomers

   Författare :Per Erik Austrell; Byggnadsmekanik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rheological models; contact-free strain measurement; modified hardness test; solid dumbbell test specimen; mechanical conditioning; strain energy plot; hyperelasticity; carbon-black-filled rubbers; amplitude dependence; multiaxial viscoplastic model; Building construction; Byggnadsteknik;

   Sammanfattning : Elasticity and damping are significant properties of rubber, taken advantage of in engineering applications. It is therefore important that the constitutive model accurately captures these aspects of the mechanical behavior. LÄS MER

5. 14. Non-contact measurements and modelling of milling machine tool vibrations

   Författare :Matti Rantatalo; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk akustik; Engineering Acoustics;

   Sammanfattning : This thesis concerns the development of non-contact measurement methods and analysis of rotors. The methods have been verified and applied to milling machine spindles in order to investigate the speed dependency in the milling machine spindle dynamic. The research was financed by the Swedish Agency for Innovation Systems (Vinnova). LÄS MER

7. 15. Unga i normalitetens gränsland : Undervisning och behandling i särskilda undervisningsgrupper och hem för vård eller boende

   Författare :Susanne Severinsson; Elisabet Cedersund; Maria Simonsson; Linköpings universitet; []
   Nyckelord :Troubled youth; special education; treatment; discourse analysis; categorization; identity; interpretative repertoire; accountability; Problemungdomar; särskild undervisningsgrupp; hem för vård eller boende; specialpedagogik; stödundervisning; behandling; diskursanalys; kategorisering; identitet; tolkningsrepertoar; accountability; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP;

   Sammanfattning : I denna studie riktas fokus mot hur samhället ordnar för barns välfärd när de generellt inriktade insatserna inte räcker till. Studien baseras på observationer och intervjuer i tre olika verksamheter för unga i åldern 12-16 år: 1) ett hem för vård eller boende, HVB, med egen skola, 2) en kommunal särskild undervisningsgrupp, f d skoldaghem, och 3) ett HVB för utredning och behandling utan egen skola. LÄS MER