Original title: Porovnání dynamického a statického modulu pružnosti poškozeného dřeva
Translated title: Comparison of the dynamic and static elasticity modules in damaged wood
Authors: Kloiber, Michal ; Kotlínová, M.
Document type: Papers
Conference/Event: Applied mechanics 2006, Srní (CZ), 2006-04-03 / 2006-04-05
Year: 2006
Language: cze
Abstract: [cze] [eng]
Práce je zaměřena na vyhodnocování vlastností dřeva, získaných na základě ultrazvukového testování pomocí defektoskopického přístroje Arborsonic Decay Detektor (ADD). Předností tohoto zařízení je nedestruktivnost, protože pracuje na principu přenosu ultrazvukové vlny s frekvencí 77 kHz mezi dvěma sondami, které se přikládají na protilehlé strany zabudovaného prvku. This work deals with evaluation of wood properties, that are obtained on the base of ultrasound testing with defectoscopic Arborsonic Decay Detector. Ultrasound waves expand with speed, that depends on wood quality. From time of stress wave propagation and wood density dynamic modulus of elasticity was calculated. The same test specimens were statically loaded afterwards, and dynamic and static modulus of elasticity were compared. These characteristics of wood according to damage by biotic factors change rapidly. This work proofs possibility of non-destructive wood properties by constructive-technical research of wood constructions.
Keywords: dynamic modulus of elasticity; nondestructive evaluation; static modulus of elasticity
Project no.: CEZ:AV0Z20710524 (CEP)
Host item entry: Applied mechanics 2006, ISBN 80-7043-441-4

Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0160980

Permalink: http://www.nusl.cz/ntk/nusl-38805


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