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Visar resultat 1 - 5 av 6 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Local variation in bending stiffness in structural timber of Norway spruce : for the purpose of strength grading

   Författare :Min Hu; Marie Johansson; Linnéuniversitetet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; digital image correlation; fibre angle; high resolution; laser scanning; local stiffness; MOE profile; mode shape curvature; strain field; strength grading; structural timber; tracheid effect; Digital image correlation; fibervinkel; laserskanning; lokal styvhet; MOE-profil; töjningsfält; hållfasthetssortering; konstruktionsvirke; trakeideffekt; Forestry and Wood Technology; Skog och träteknik;

   Sammanfattning : Most strength grading machines on the European market use an averagemodulus of elasticity (MOE), estimated on a relatively large distance along awood member, as the indicating property (IP) to bending strength. Theaccuracy of such grading machines in terms of coefficient of determination israther low at R2 ≈ 0.5. LÄS MER

3. 2. Strength grading of structural timber and EWP laminations of Norway spruce : Development potentials

   Författare :Jan Oscarsson; Anders Olsson; Marie Johansson; Mikael Perstorper; SP Sveriges Tekniska Forskningsinstitut; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; bending strength; fibre angle; grain angle; knots; laser scanning; machine strength grading; modulus of elasticity; strain measurement; structural timber; tensile strength; wood; böjhållfasthet; draghållfasthet; elasticitetsmodul; fibervinkel; konstruktionsvirke; kvistar; laserskanning; maskinell hållfasthetssortering; trä; töjningsmätning; Byggteknik; Civil engineering;

   Sammanfattning : Strength grading of structural timber is a process by which value is added to sawn products. It is to the greater part carried out using machine grading based on statistical relationships between so called indicating properties and bending strength. LÄS MER

4. 3. Förvandlingar i vikingatidens djurornamentik : Del 1 : En multiperspektivisk studie om figurknoppspännen av Birkatyp

   Författare :Michael Neiß; Christoph Kilger; Frands Herschend; Ingmar Jansson; Elna Siv Kristoffersen; Uppsala universitet; []
   Nyckelord :3D laser scanning and modeling. Animal Art. Birka type brooches. Cognitive archaeology. Dynamic typology. Iconology. Informed grounded theory. Metalworking. Multimodal semiotics. Scaldic ekphrasis. Viking Studies; 3D laserskanning och -modellering. Djurornamentik. Dynamisk typologi. Ikonologi. Informerad grundad teori. Kognitiv arkeologi. Metallhantverk. Multimodal semiotik. Skaldisk ekfras. Spännen av Birkatyp. Vikingatidsstudier.; Archaeology; Arkeologi; Konstvetenskap HGO ; Art History HGO ; Konstvetenskap; History of Art; Religionshistoria; History of Religions; Scandinavian Languages; Nordiska språk;

   Sammanfattning : During the past 150 years, different generations of scholars have been approaching Scandinavian Animal Art with queries that were as multifaceted as the materials that they studied. The focal point of this study are Birka type brooches, which are best likened to interactive sculptures that change shape as the viewer changes perspec­tive. LÄS MER

5. 4. The Integration of 3D Geodata and BIM Data in 3D City Models and 3D Cadastre

   Författare :Jing Sun; Kent Eriksson; Anders Östman; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 3D geodata; BIM; city models; 3D cadastre; geometric quality; CityGML; LADM; laser scanning; Geodesy and Geoinformatics; Geodesi och geoinformatik; Geodesi; Geodesy;

   Sammanfattning : The initial geographic information system (GIS) and building information modelling (BIM) are designed and developed independently in order to serve different purposes and use. Within the prolific increase and growing maturity of three-dimensional (3D) technology, both 3D geodata and BIM data can specify semantic data and model 3D buildings that are prominent for the 3D city models and 3D cadastre. LÄS MER

7. 5. Model and Reality : Connecting BIM and the Built Environment

   Författare :Gustaf Uggla; Milan Horemuz; Patric Jansson; Väino Tarandi; Alojz Kopáčik; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geodesi; Geodesy;

   Sammanfattning : The adoption of building information modeling (BIM) in the architecture, engineering, and construction (AEC) industry is changing the way informa-tion regarding the built environment is created, stored, and exchanged. In short, documents are replaced with databases, processes are automated, and timelines become more circular with an emphasis on managing the life cycles of all manufactured objects. LÄS MER