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Gewählte Doctoral Thesis:

Thomas Krenke (2017): Analyse von Zerspanungsmethoden bei Vollholz.
Doctoral Thesis - Institut für Holztechnologie und Nachwachsende Rohstoffe, BOKU-Universität für Bodenkultur, pp 189. UB BOKU obvsg FullText

Data Source: ZID Abstracts

Abstract:: Mechanical disintegration techniques are one of the key processes within the wood industry. Until today cutting processes were optimized by trial and error due to the modified process conditions. As costs for Energy and raw material are rising, the development of a knowledge-based optimization strategy is required. Basement for the optimization of cutting processes is an applicable description of the cutting process. A new developed test set up was focused on the investigation of low dynamic (7 m∙s-1) and nearly orthogonal cutting processes. The dynamic characterization of the developed test setup was accomplished by the application of the so called system function approach, which allowed the correction and elimination of all influences induced by the test setup itself. Own cutting examinations show in comparison to the literature, that the measured values show different influences of cutting force depending on the cutting direction. Regarding the influences of the moisture content and the material density on the cutting force, measured values are comparable to literature. Due to the high importance of disintegration processes and machining in the wood industry, established processes were investigated using function analyses. As a consequence, these functions enable the generation of abstracted search terms, usable for literature and patent research in the field of alternative cutting and disintegration processes. The application of the generated abstracted search terms in literature and patent research delivered a huge number of possible applicable processes. In a further step, the huge amount of information was reduced to 15 fundamental principles by expert interviews and an additional literature research. This approach of function analysis and the cross industry innovation process provided an excellent overview of alternative disintegration Processes of wood, as well as the necessity of optimization for already existing and established disintegration processes.; Betreuer: Müller Ulrich; 1. Berater: Teischinger Alfred; 2. Berater: Frömel-Frybort Stephan