Sökning: "elastomers"

Visar resultat 1 - 5 av 31 avhandlingar innehållade ordet elastomers.

1. 1. Degreable elastomers

   Författare :Ronnie Palmgren; KTH; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

3. 2. Tribology of elastomers

   Författare :Mohammad Mofidi; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

   Sammanfattning : In this work, the tribological behaviour of different sealing elastomers has been studied. The influence of aging of a sealing elastomer in different lubricants on its tribological behaviour has been investigated. Tribological behaviour of sealing elastomers in dry condition and the mechanisms occurring in run-in period have been studied. LÄS MER

4. 3. Biodegradable Thermoplastic Elastomers

   Författare :Basse Asplund; Jöns Hilborn; Tim Bowden; Iskender Yilgör; Uppsala universitet; []
   Nyckelord :Chemistry; poly urethane ; poly urethane urea ; biomaterial; biodegradable; polymer; thermoplastic elastomer; haemocomatible; tissue engineering; biocompatible; Kemi;

   Sammanfattning : A novel strategy for synthesising segmented poly(urethane urea) (PUU) without using a chain extender but nevertheless with the opportunity to vary the hard segment content has been developed. The strategy is based on amine formation from isocyanate upon reaction with water. LÄS MER

5. 4. Structural-acoustic vibrations in wooden assemblies : Experimental modal analysis and finite element modelling

   Författare :Åsa Bolmsvik; Torbjörn Ekevik; Andreas Linderholt; Anders Brandt; Anders Ågren; Linnéuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wooden framed structure; light weight buildings; multi-storey; flanking transmission; junction; vibration distribution; impact noise; damping; elastomers; finite element analysis; experimental modal analysis; FRF; trästomme; träkonstruktion; träbyggnad; flervåningshus; EMA; FEM; flanktransmission; koppling; knutpunkt; vibrationsspridning; stomljud; stegljud; dämpning; elastomerer; finit elementmetod; experimentell modalanalys; accelerationsmätning; frekvensresponsfunktion; modalanalys;

   Sammanfattning : This doctoral thesis concerns flanking transmission in light weight, wooden multi-storey buildings within the low frequency, primarily 20-120 Hz. The overall aim is to investigate how the finite element method can contribute in the design phase to evaluate different junctions regarding flanking transmission. LÄS MER

7. 5. Vibroacoustic performance of wooden buildings : Prediction and Perception

   Författare :Juan Negreira; Teknisk akustik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Prediction tools; Low frequency vibrations; Vibroacoustics; Wooden buildings; Impact sound insulation; Finite element method; Vibration measurements; Flanking transmission; Elastomers; Design indicators; Vibration acceptability; Vibration annoyance; MEMS accelerometers;

   Sammanfattning : When the Swedish building regulations in 1994 allowed wooden multi-storey buildings to be built, this type of lightweight construction became popular due to its low cost and ease of construction, as well as wood being a plentiful resource in Sweden. However, complaints amid inhabitants are often reported due to nuisances caused by disturbing vibrations and noise propagating in the building. LÄS MER