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  • 51. Ekevad, Mats
    et al.
    Lundgren, Nils
    Flodin, Jens
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Choosing green sawing dimensions for best value yield of Norway spruce-Industrial measurements and physical modelling2010Konferensbidrag (Övrigt vetenskapligt)
  • 52. Ekevad, Mats
    et al.
    Lundgren, Nils
    Flodin, Jens
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Drying shrinkage of sawn timber of Norway spruce (Picea abies): Industrial measurements and finite element simulations2011Ingår i: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 6, nr 1-2, s. 41-48Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Industrial measurements of green and dry cross-section dimensions were performed for 189 Norway spruce (Picea abies) centre-yield boards with dry dimensions 51 × 149 mm. Two, three or four boards were sawn from each log, depending on log size. Different approaches were used for simulations of cross-section shrinkage during drying. An analytical model, an elastic, an elastic– mechanosorptive and an elastic– plastic finite element simulation model were tested. Thickness and width shrinkage and deformation were simulated. Shrinkage results were compared with each other and with the experimental results. All simulation models gave roughly the same degree of agreement with experimental results except for the centre board from the three-board sawing pattern. For the other boards, the analytical model was not generally better or worse than the results from the finite element models. Shrinkage deformations in finite element models that included mechanosorption or plasticity were nearly the same as for the elastic finite element model except for the centre board of the three-board sawing pattern. The mechanosorptive model was the best model for the shrinkage of the centre board of this sawing pattern except for mid-thickness shrinkage. Comparison between the different finite element simulation models of stresses in the centre board revealed large differences.

  • 53.
    Ekstedt, Jan
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Rosenkilde, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Hameury, Stéphane
    Sterley, Magdalena
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP - Sveriges Tekniska Forskningsinstitut, SP Trä.
    Berglind, Henrik
    Measurement of moisture content profiles in coated and uncoated Scots Pine using Magnetic Resonance Imaging2007Ingår i: Quality Control for Wood and Wood Products - COST E53 The First Conferenc, Warsaw University of Life Sciences , 2007, , s. 27-32Konferensbidrag (Refereegranskat)
    Ladda ner fulltext (pdf)
    fulltext
  • 54. Ekstedt, Jan
    et al.
    Sterley, Magdalena
    Konstfack, Institutionen för design, inredningsarkitektur och visuell kommunikation (DIV), Grafisk design & illustration.
    Rosenkilde, Anders
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Spinnande väte ger bilder av vatten2007Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 55.
    Englund, Finn
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Inomhusluften påverkas av byggmaterialen2007Ingår i: Husbyggaren, nr 1, s. 46-51Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 56.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Bryne, Lars Elof
    Ernstsson, Marie
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor.
    Lausmaa, Jukka
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Funktionella material (KMf).
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Some aspects on the determination of surface chemical composition and wettability of modified wood2009Ingår i: Proceedings of The Fourth European Conference on Wood Modification., SP Technical Research Institute of Sweden , 2009, , s. 553-560Konferensbidrag (Övrigt vetenskapligt)
  • 57.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Bryne, Lars Elof
    Ernstsson, Marie
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor.
    Lausmaa, Jukka
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Funktionella material (KMf).
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Some aspects on the determination of surface chemical composition and wettability of modified wood2009Ingår i: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 4, nr 1-2, s. 80-85Artikel i tidskrift (Refereegranskat)
  • 58.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Bryne, Lars Elof
    Ernstsson, Marie
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor.
    Lausmaa, Jukka
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Funktionella material (KMf).
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP - Sveriges Tekniska Forskningsinstitut, SP Trä.
    Spectroscopic studies of surface chemical composition and wettability of modified wood2009Ingår i: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 4, nr 1-2, s. 80–85-Artikel i tidskrift (Refereegranskat)
  • 59.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Fjaestad, Monika
    Ferm, Martin
    Neutral materials in museum environments: Corrosivity of the air and the influence of building and furnishing materials in museums2011Ingår i: Indoor Air 2011 Proceedings, Int'l Conference of Indoor Air Quality and Climate , 2011Konferensbidrag (Refereegranskat)
  • 60.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Newsletter No 1, 20072007Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 61.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Newsletter no 1, 20082008Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 62.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Newsletter No 1, 20092009Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 63.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Trä.
    EcoBuild Newsletter No 1, 20102010Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 64.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Newsletter No 1, 20112011Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 65.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Newsletter No 2, 20072007Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 66.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Newsletter No 2, 20092009Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 67.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Newsletter No 2, 20102010Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 68.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Newsletter No 2, 20112011Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 69.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Newsletter no 3, 20082008Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 70.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Newsletter No 3, 20092009Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 71.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Nyhetsbrev nr 1, 20072007Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 72.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Nyhetsbrev nr 1, 20082008Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 73.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Nyhetsbrev nr 1, 20092009Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 74.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Nyhetsbrev nr 1, 20102010Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 75.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Nyhetsbrev nr 1, 20112011Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 76.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Nyhetsbrev nr 2, 20072007Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 77.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Nyhetsbrev nr 2, 20092009Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 78.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Nyhetsbrev nr 2, 20102010Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 79.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Nyhetsbrev nr 2, 20112011Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 80.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Nyhetsbrev nr 3, 20082008Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 81.
    Englund, Finn
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Wålinder, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    EcoBuild Nyhetsbrev nr 3, 20092009Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 82. Epmeier, Hanna
    et al.
    Bengtsson, Charlotte
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Westin, Mats
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Change of properties of small wood samples due to chemical modification2010Konferensbidrag (Övrigt vetenskapligt)
  • 83. Epmeier, Hanna
    et al.
    Johansson, Marie
    Kliger, Robert
    Westin, Mats
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Material properties and their interrelation in chemically modified clear wood of Scots pine2007Ingår i: Holzforschung, ISSN 0018-3830, E-ISSN 1437-434X, Vol. 61, nr 1, s. 34-42Artikel i tidskrift (Refereegranskat)
  • 84. Epmeier, Hanna
    et al.
    Johansson, Marie
    Kliger, Robert
    Westin, Mats
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Matertial properties and their interrelation in chemically modified clear wood of Scots pine2007Ingår i: Holzforschung, ISSN 0018-3830, E-ISSN 1437-434X, Vol. 61, nr 1, s. 34-42Artikel i tidskrift (Refereegranskat)
  • 85.
    Eriksson, Magnus
    et al.
    KTH Royal Institute of Technology, Sweden.
    Boyer, Antoine
    KTH Royal Institute of Technology, Sweden; Politecnico di Torino, Italy.
    Sinigoi, Loris
    KTH Royal Institute of Technology, Sweden; University of Trieste, Italy.
    Trey, Stacy
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Johansson, Mats
    KTH Royal Institute of Technology, Sweden.
    Malmström, Eva
    KTH Royal Institute of Technology, Sweden.
    Hult, Karl
    KTH Royal Institute of Technology, Sweden.
    Martinelle, Mats
    KTH Royal Institute of Technology, Sweden.
    One-pot enzymatic route to tetraallyl ether functional oligoesters: Synthesis, UV curing, and characterization2010Ingår i: Journal of Polymer Science Part A: Polymer Chemistry, ISSN 0887-624X, E-ISSN 1099-0518, Vol. 48, nr 23, s. 5289-5297Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    An enzymatic one-pot route in bulk was used to synthesize tetraallyl ether (tAE) functional oligomers based on divinyl adipate, 1,4-butanediol and trimethylolpropane diallyl ether. By using lipase B from Candida antarctica as catalyst and varying the stoichiometric ratio of monomers, it was possible to reach targeted molecular weights (from 1300 to 3300 g mol-1) of allyl-ether functional polyesters. The enzyme catalyzed reaction reached completion (>98% conversion based on all monomers) within 24 h at 60 °C, under reduced pressure (72 mbar) resulting in ~90% yield after filtration. The tAE-functional oligoesters were photopolymerized, without any purification other than removal of the enzyme by filtration, with thiol functional monomers (dithiol, tetrathiol) in a 1:1 ratio thiol-ene reaction. The photo-initiator, 2,2-dimethoxy-2-phenylacetophenone, was used to improve the rate of reaction under UV light. High conversions (96–99% within detection limits) were found for all thiol-ene films as determined by FT-Raman spectroscopy. The tAE-functional oligoesters were characterized by NMR, MALDI, and SEC. The UV-cured homopolymerized films and the thiol-ene films properties were characterized utilizing DSC and DMTA.

  • 86.
    Eriksson, Magnus
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Hult, Karl
    KTH Royal Institute of Technology, Sweden.
    Malmström, Eva
    KTH Royal Institute of Technology, Sweden.
    Johansson, Mats
    KTH Royal Institute of Technology, Sweden.
    Trey, Stacy
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Martinelle, Mats
    KTH Royal Institute of Technology, Sweden.
    One-pot enzymatic polycondensation to telechelic methacrylate-functional oligoesters used for film formation2011Ingår i: Polymer Chemistry, ISSN 1759-9954, E-ISSN 1759-9962, Vol. 2, nr 3, s. 714-719Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Based on largely renewable monomers, an enzymatic one-pot polycondensation route towards functional oligomers with targeted molecular weights and end-groups was developed. This one-pot synthesis was performed by combining Candida antarctica lipase B (CALB), 2-hydroxyethyl methacrylate (HEMA), ethylene glycol, and divinyl adipate under reduced pressure (72 mbar) at 60 °C. The polymerization went to completion (>95% conversion for all monomers) within 24 h and the fraction of methacrylate end-groups was >90%. Three targeted dimethacrylate functional oligomers with molecular weights of 920, 1700 and 2500 g mol-1 (degrees of polymerization 4, 8, and 13 respectively) were synthesized. The oligomer products were characterized by NMR, MALDI-TOF MS and SEC. The dimethacrylate functional oligomers were further UV homopolymerized or combined with a tetrathiol crosslinker to demonstrate the potential to produce novel networks with tunable thermal properties dependent on chain length of the telechelic building blocks. This research is the first to demonstrate methacrylate functionalization and condensation polymerization in a one step process, which expands the growing toolbox for polymer/material chemists towards an increased throughput in available macromonomers used in material design.

  • 87. Fechter, J-O.
    et al.
    Englund, Finn
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Emission of glycol ethers from medium-density fibreboard surfaces coated by a waterborne lacquer under different drying conditions2008Ingår i: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 3, nr 1-2, s. 21-28Artikel i tidskrift (Refereegranskat)
  • 88.
    Flodin, Jens
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Oja, Johan
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Grönlund, Anders
    Fingerprint traceability of logs using the outer shape and the tracheid effect2008Ingår i: Forest products journal, ISSN 0015-7473, Vol. 58, nr 4, s. 21-27Artikel i tidskrift (Refereegranskat)
  • 89.
    Flodin, Jens
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Oja, Johan
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Grönlund, Anders
    Fingerprint Traceability of Sawn Products Using Connected Sawn Timber2009Ingår i: Proceedings of 16th International Symposium on Nondestructive Testing and Evaluation of Wood., Beijing Forestry University. Beijing Forestry University & US Forest Service Forest Products Laboratory , 2009, , s. 91-95Konferensbidrag (Refereegranskat)
  • 90.
    Flodin, Jens
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Oja, Johan
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Grönlund, Anders
    Fingerprint traceability of sawn products using industrial measurement systems for x-ray log scanning and sawn timber surface scanning2008Ingår i: Forest products journal, ISSN 0015-7473, Vol. 58, nr 11, s. 100-105Artikel i tidskrift (Refereegranskat)
  • 91. Frangi, Andrea
    et al.
    König, Jürgen
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Effect of increased charring on the narrow side of rectangular timber cross-sections exposed to fire on three or four sides2011Ingår i: Fire and Materials, ISSN 0308-0501, E-ISSN 1099-1018, Vol. 35, nr 8, s. 593-605Artikel i tidskrift (Refereegranskat)
  • 92. Girhammar, Ulf A
    et al.
    Källsner, Bo
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Effect of transverse walls on capacity of wood-framed wall diaphragms - Part 22009Konferensbidrag (Övrigt vetenskapligt)
  • 93. Girhammar, Ulf A
    et al.
    Källsner, Bo
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Effect of transverse walls on capacity of wood-framed wall diaphragms without tie-downs2008Konferensbidrag (Refereegranskat)
  • 94. Girhammar, Ulf Arne
    et al.
    Gustafsson, P.J.
    Källsner, Bo
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Finite element modelling of shear walls using connector shear elements based on continuum plasticity2010Konferensbidrag (Refereegranskat)
  • 95. Girhammar, Ulf Arne
    et al.
    Källsner, Bo
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Analysis of influence of imperfections on stiffness of fully anchored light-frame timber shear walls—elastic model2009Ingår i: Materials and Structures, ISSN 1359-5997, E-ISSN 1871-6873, Vol. 42, nr 3, s. 321-337Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In order to stabilize light-frame timber buildings against horizontal loads, the diaphragm or in-plane action of roofs, floors and walls is often used. This paper deals with the influence of imperfections such as gaps and uplift on the horizontal displacement of fully anchored shear walls. The significance of analyzing the effects of imperfections is evident when evaluating the stiffness of shear walls; tests of walls show that the horizontal displacement is underestimated in calculations using the stiffness of sheathing-to-framing joints as obtained from experiments. Also, in real structures where hold-downs are used according to the elastic design method, the influence of gaps and uplift should be included in order to obtain realistic displacements in the serviceability limit state. A new elastic model for the analysis, based on linear elastic behaviour of the mechanical sheathing-to-framing joints, is presented and the equations for the stiffness and the deflection versus the number of segments in the wall are derived. The fully anchored condition for the shear walls are modelled by applying a diagonal load to the wall. Three types of imperfections are evaluated: gaps at all studs, a gap only at the trailing stud, and gaps at all studs, except at the trailing stud. It is shown that the effect of imperfections on the stiffness of the wall in the initial stage is considerable. Depending on the distribution of the gaps and the number of segments included in the shear wall, the displacement of the shear wall is increased several times compared to that of a fully anchored shear wall with no gaps; e.g. for a single segment wall more than three times. However, for walls with more than six to ten segments, the effect of imperfections can be neglected. Finally, the theoretical model is experimentally verified.

  • 96. Girhammar, Ulf Arne
    et al.
    Källsner, Bo
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Design aspects on anchoring the bottom rail in partially anchored wood-framed shear walls2009Ingår i: Proceedings of Timber Structures: CIB-W18, 2009, , s. 13Konferensbidrag (Övrigt vetenskapligt)
  • 97. Girhammar, Ulf Arne
    et al.
    Källsner, Bo
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Elasto-plastic model for analysis of influence of imperfections on stiffness of fully anchored light-frame timber shear walls2009Ingår i: Engineering structures, ISSN 0141-0296, E-ISSN 1873-7323, Vol. 31, nr 9, s. 2182-2193Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In order to stabilize timber-framed buildings against lateral loads, the diaphragm action of roofs, floors and walls is often used. This paper deals with the influence of imperfections such as gaps and uplift on the stiffness and the horizontal displacement of fully anchored shear walls. The significance of analyzing the effects of imperfections is evident when evaluating the stiffness of shear walls; tests of walls show that the horizontal displacement is underestimated in calculations using the stiffness of sheathing-to-framing joints as obtained from experiments. Also, in real structures where hold-downs are used, the influence of gaps and uplift should be included in order to obtain realistic displacements in the serviceability limit state. The analytical model is based on ideal plastic behavior of the mechanical sheathing-to-timber joints with stresses parallel to the perimeter of the frame and on linear elastic behavior for stresses perpendicular to the bottom rail. Using this elasto-plastic model, the equations for the stiffness and the deflection versus the number of segments in the wall are derived. The fully anchored condition for the shear walls is simulated by applying a diagonal load to the shear wall. Three types of imperfections are evaluated: Walls with gaps at all studs, a gap only at the trailing stud, and gaps at all studs, except at the trailing stud. It is shown that the effect of imperfections on the stiffness of the wall in the initial stage is considerable. Depending on the distribution of the gaps and the number of segments included in the shear wall, the displacement of the shear wall is increased several times compared to that of a fully anchored wall diaphragm with no gaps; e.g. for a single segment wall more than four times. However, for walls with more than six segments the effect of imperfections can be neglected. Finally, the theoretical model is experimentally verified.

  • 98. Girhammar, Ulf Arne
    et al.
    Källsner, Bo
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Andreasson, Sverker
    Plastisk dimensionering av horisontalbelastade skiv-regelstommar i trä2010Ingår i: Samhällsbyggaren, nr 5, s. 45-48Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 99. Girhammar, Ulf Arne
    et al.
    Källsner, Bo
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Daerga, Per-Anders
    Recommendations for design of anchoring devices for bottom rails in partially anchored timber frame shear walls2010Ingår i: Proceedings of World Conference on Timber Engineering - WCTE 2010, World Conference on Timber Engineering , 2010, , s. 1218-1227Konferensbidrag (Refereegranskat)
  • 100. Girhammar, Ulf Arne
    et al.
    Källsner, Bo
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Gustafsson, P.J.
    Johnsson, Helena
    Luleå University of Technology, Sweden.
    Stabilisering och bjälklag kritiska för höghus i trä2011Ingår i: Husbyggaren, Vol. 53, nr 1, s. 16-21Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
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