caa a22 4500 463226615 CHVBK 20180405153229.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s10853-006-1454-0 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1454-0 Prediction of ultrasonic wave velocity in particleboard and fiberboard [Elektronische Daten] [Saeed Kazemi Najafi, Alireza Abbasi Marasht, Ghanbar Ebrahimi] Ultrasonic wave velocities were determined at parallel and perpendicular to manufacturing direction and at the interval angles of 15° in clockwise and counterclockwise directions of particleboard and fiberboard. The experimental results were compared with the predicted values using some empirical formulae such as Hankinson and Jacoby equations. The results showed that the ultrasonic wave velocity were the highest in parallel direction in particleboard and fiberboard and decreases with increase of angle and the lowest values occurred in perpendicular direction. The predicted ultrasonic velocity using Hankinson and Jacoby equations are in close agreement with the measured values. Relationship between ultrasonic wave velocities and particles and fibers angle could be successfully presented by cubic and quadratic regression equations as well. Springer Science+Business Media, LLC, 2007 Kazemi Najafi Saeed Department of Wood and Paper Science & Technology, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran aut Abbasi Marasht Alireza Department of Wood and Paper Science & Technology, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran aut Ebrahimi Ghanbar Department of Wood and Paper Science & Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/3(2007-02-01), 789-793 0022-2461 42:3<789 2007 42 10853 https://doi.org/10.1007/s10853-006-1454-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1454-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kazemi Najafi Saeed Department of Wood and Paper Science & Technology, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran aut NATIONALLICENCE 700 1- Abbasi Marasht Alireza Department of Wood and Paper Science & Technology, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran aut NATIONALLICENCE 700 1- Ebrahimi Ghanbar Department of Wood and Paper Science & Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/3(2007-02-01), 789-793 0022-2461 42:3<789 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer