Crack lenghts calculation from COD measurement for cement based composites

0385833 - ÚFM 2013 RIV CZ eng K - Konferenční příspěvek (tuzemská konf.)
Seitl, Stanislav - Hanzlovský, Radovan - Knésl, Zdeněk
Crack lenghts calculation from COD measurement for cement based composites.
14th International conference Applied Mechanics 2012 - Conference proceedings. Plzeň: Západočeská univerzita v Plzni, 2012 - (Lukeš, V.; Hajžman, M.; Byrtus, M.), s. 137-140. ISBN 978-80-261-0097-3.
[Applied Mechanics 2012. Plzeň (CZ), 16.04.2012-18.04.2012]
Grant CEP: GA ČR(CZ) GAP104/11/0833
Institucionální podpora: RVO:68081723
Klíčová slova: COD * fatigue * crack propagation * Paris’ law * composites
Kód oboru RIV: JL - Únava materiálu a lomová mechanika

The fatigue of cement based composites is now one of the progressive branches in research. To describe fatigue crack growth quantitatively it is necessary to know the values of materials parameters for Paris’ law. In cement based composites it is difficult to measure crack lengths directly. Therefore the crack open displacement (COD) is measured and then recalculated to crack length. The purpose of the present article is to find the relation between COD and the corresponding crack length for three point bend specimen.
Trvalý link: http://hdl.handle.net/11104/0215249