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Research project (§ 26 & § 27)
Duration : 2017-12-01 - 2019-11-30

Growing calamities in Austrian forests lead to temporary peaks in available round wood on the market, which directly cause bottlenecks in terms of transportation and storage capacities from the forest to the mill. Decline in prices and potential economic losses in the following years reinforce searching for possible solutions to counteract this tight situation. An alternative for processing bark beetle affected timber could be debarking in fully mechanized harvesting operations using special constructed and adapted harvesting heads. Debarking is an extra process step at the skid road in the stand. The goal of this interdisciplinary project is to evaluate in detail the potential of debarking in fully mechanized harvesting operations in terms of forest engineering and forest protection including its effect on downstream processes along the supply chain.
Research project (§ 26 & § 27)
Duration : 2017-05-01 - 2019-04-30

A life-cycle-assessment for timber supply from the forest to the plant is the goal of the project. A special focus is on the evaluation of new technologies. The most important environmental impacts (e.g. climate change, acidification, eutrophication) should be analysed for the supply of 1 m³ timber (saw logs, industrial wood, energy wood) for selected case study regions. The performance of existing and new technologies (hybrid propulsion, electric vehicles, rechargeable batteries, transport optimization etc.) will be compared. The environmental impacts will be analysed for different harvesting systems (from motor-manual to fully mechanized) and regions (coniferous and deciduous forest, flat and steep terrain). Processes with a high environmental impact and therefore a lot of room for improvement will be identified. Based on this, individual solutions can be derived for every model forest enterprise. The results of the study should be used by the forest lobby (e.g. chamber of agriculture) to inform the public about environmentally friendly supply of wood products. The transfer of knowledge should also be executed by BOKU and by forest training centers.
Research project (§ 26 & § 27)
Duration : 2016-11-01 - 2018-10-31

According to the EU Directive 2015/719 which is laying down maximum authorised dimension and weights subsection 13 is pointing out to take measures for the detection of infringements of vehicles regarding weight limits until May, 27 2021 to ensure undistorted competition between operators. This is directly affecting the round wood transport in Austria. For weighing respectively estimating the transported load of round wood with truck and trailer from forest to customer different technical solutions are available but not common. Additionally detailed information regarding the performance of crane scales in round wood transport is not available. Using crane scales in round wood transport only an accurate estimation of the load is interesting not an exact weight for sale and contracting. But this can ensure that weight limits are not exceeded and load capacities will be utilized. At the moment there are different technical solutions available on the market. A current product for estimation the load in round wood transport combines the information of hydraulic pressure and acceleration whereby a classical weighing link can be omitted. Both, the latest invention and a classic weighing link with integrated acceleration sensors should be analyzed and tested regarding the following aims: • Carrying out a market overview for current solutions regarding crane scales for round wood transport • Detailed process- and performance analysis of transport activities, accuracy and potential support for drivers and entrepreneurs during their daily business • Economic assessment of acquiring and using crane scales in round wood transport based on detailed process- and performance analysis

Supervised Theses and Dissertations