Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2011
Abstract
This study examined the difference in workload brought about by exchanging a 3.5mm steel rope with a 4.0 mm synthetic fiber rope when dragging a strawline up a 300 m corridor in setting up a new cable-yarding line. Physiological workload was monitored through heart rate measurement, while the physical forces acting on the subject (rope mass and friction) were quantified using a dynamometer attached to a belt. While there was a substantial difference in force between rope types at full extent (140 N vs. 40 N), the result was less significant when seen against the total work required in moving the subjects own body mass up the slope. The direction of the resultant force vector appears to play an important role in the way that strain is experienced. It was discovered that 300 m was the maximum hauling distance for a single person using this rigging method with a steel wire strawline, whereas for the synthetic rope, the same tensile force would only be reached at 1200 m. This alone has important implications for labor saving amongst small cable logging teams.
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2010
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Authors
Filipa Cox Nadia Barsoum Martin I. Bidartondo Isabella Børja Erik Lilleskov Lars Ola Nilsson Pasi Rautio Kath Tubby Lars VesterdalAbstract
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Gunnhild Riise Tore Krogstad Inggard Blakar Elin L. Gjengedal Ståle Haaland Johnny Kristiansen Kristine Naas Torgeir Reierstad Aleksandra Trnic Romarheim Johnson Rutsinda Sara ZambonAbstract
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Authors
Liv Østrem Mats Höglind åsbjørn karlsen Petter Marum Anne-Marte Tronsmo Odd Arne RognliAbstract
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Tore SkrøppaAbstract
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