Mini-jack based direct determination of wood mechanical characteristics in situ

0460647 - ÚTAM 2018 RIV GR eng A - Abstrakt
Kloiber, Michal - Drdácký, Miloš - Kunecký, Jiří - Tippner, J. - Sebera, V.
Mini-jack based direct determination of wood mechanical characteristics in situ.
17th International Conference on Experimental Mechanics (ICEM 17). Rhodes, 2016.
[International Conference on Experimental Mechanics (ICEM 17) /17./. 03.07.2016-07.07.2016, Rhodos]
Grant CEP: GA MŠMT(CZ) LO1219
Klíčová slova: determination of strength * modulus of deformability * in situ * mechanical characteristic of wood
Obor OECD: Paper and wood

The paper presents a new diagnostic technique allowing the determination of strength (CSC (L)) and modulus of deformability (MODC (L)) by pushing grips apart in a bored hole. There is no other technique that allows the same in situ. Experimental measurements were carried out using 30 spruce boards at moisture contents of 12, 18 and 24%. The results of the tests prove a very good correlation of the strength determined by the proposed technique and wood density and strength determined using standard samples in compression parallel to the grain. The effect of the wood moisture on the measurement by pushing grips apart in a borehole was confirmed too.
Trvalý link: http://hdl.handle.net/11104/0260657