caa a22 4500 463216547 CHVBK 20180405153158.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s00226-007-0136-7 doi (NATIONALLICENCE)springer-10.1007/s00226-007-0136-7 Effect of grain angle on shear strength of glued end grain to flat grain joints of defect-free softwood timber [Elektronische Daten] [Jürgen Follrich, Alfred Teischinger, Wolfgang Gindl, Ulrich Müller] To evaluate the effect of grain orientation on the adhesive bond strength, three-layered Norway spruce wood specimens were tested in shear. The two axial-oriented outer layers were jointed with the middle layer using three typical glues for load bearing constructions, i.e. one-component polyurethane (PUR), melamine-urea-formaldehyde (MUF) and phenol-resorcinol-formaldehyde (PRF). The grain orientation of the middle layers was varied from 0° (parallel to grain of the surface layer) to 90° (perpendicular to grain of the surface layer) in incremental steps of 10°. Samples with middle layers oriented parallel to the outer layers showed shear values in the range of solid spruce wood. Decreased shear strength values were expected for increased grain angles of the middle layer. However, no explicit tendency was observed for the shear strength in dependence of the grain direction. In general, MUF-bonded samples showed slightly higher shear strength values compared with PUR- and PRF-bonded specimens. Springer-Verlag, 2007 Follrich Jürgen Wood Kplus - Competence Center for Wood Composites and Wood Chemistry, Linz Austria, Peter Jordan Strasse 82, 1190, Vienna, Austria aut Teischinger Alfred Wood Kplus - Competence Center for Wood Composites and Wood Chemistry, Linz Austria, Peter Jordan Strasse 82, 1190, Vienna, Austria aut Gindl Wolfgang Department of Material Sciences and Process Engineering, Institute of Wood Science and Technology, BOKU - University of Natural Resources and Applied Life Sciences, Vienna, Austria aut Müller Ulrich Wood Kplus - Competence Center for Wood Composites and Wood Chemistry, Linz Austria, Peter Jordan Strasse 82, 1190, Vienna, Austria aut Wood Science and Technology Springer-Verlag 41/6(2007-08-01), 501-509 0043-7719 41:6<501 2007 41 226 https://doi.org/10.1007/s00226-007-0136-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00226-007-0136-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Follrich Jürgen Wood Kplus - Competence Center for Wood Composites and Wood Chemistry, Linz Austria, Peter Jordan Strasse 82, 1190, Vienna, Austria aut NATIONALLICENCE 700 1- Teischinger Alfred Wood Kplus - Competence Center for Wood Composites and Wood Chemistry, Linz Austria, Peter Jordan Strasse 82, 1190, Vienna, Austria aut NATIONALLICENCE 700 1- Gindl Wolfgang Department of Material Sciences and Process Engineering, Institute of Wood Science and Technology, BOKU - University of Natural Resources and Applied Life Sciences, Vienna, Austria aut NATIONALLICENCE 700 1- Müller Ulrich Wood Kplus - Competence Center for Wood Composites and Wood Chemistry, Linz Austria, Peter Jordan Strasse 82, 1190, Vienna, Austria aut NATIONALLICENCE 773 0- Wood Science and Technology Springer-Verlag 41/6(2007-08-01), 501-509 0043-7719 41:6<501 2007 41 226 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer