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Young’s modulus and internal friction in porous biocarbon white pine wood precursors

Kardashev, B. K. and Orlova, T. S. and Smirnov, B. I. and Wilkes, T. E. and Faber, K. T. (2009) Young’s modulus and internal friction in porous biocarbon white pine wood precursors. Physics of the Solid State, 51 (12). pp. 2463-2468. ISSN 1063-7834.

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This paper reports on a study performed in the temperature range 100–293 K, in air and in vacuum, for the amplitude and time dependences of the Young’s modulus and the internal friction (ultrasound damping) of biocarbon precursors prepared from white pine wood at two pyrolysis (carbonization) temperatures of 1000 and 2400°C. The measurements have been conducted by the resonance technique with a composite vibrator on samples cut along and across the tree growth direction. The desorption of molecules of the external medium at low amplitudes of ultrasonic vibrations has been found to produce the pronounced influence on the effective elastic modulus and elastic vibration decrement. The data obtained from acoustic measurements of the amplitude dependences of the elastic modulus have been used to estimate the microplastic properties of the samples. It has been shown that increasing the carbonization temperature gives rise to noticeable changes in the Young’s modulus and internal friction, as well as to reduction of the microplastic stress σ y of the biomaterial studied. The stress σ_y of the samples cut across the growth direction has been found to be substantially smaller than that of the “longitudinal” samples. The elastic and microplastic properties of precursors prepared from white pine wood have been compared with those of the white eucalyptus wood.

Item Type:Article
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Faber, K. T.0000-0001-6585-2536
Additional Information:© 2009 Pleiades Publishing, Ltd. Original Russian Text © B.K. Kardashev, T.S. Orlova, B.I. Smirnov, T.E. Wilkes, K.T. Faber, 2009, published in Fizika Tverdogo Tela, 2009, Vol. 51, No. 12, pp. 2320–2325. Received April 2, 2009. Translated by G. Skrebtsov. This study was supported by the Russian Foundation for Basic Research (project no. 07-03-91353 NNF_a) and the Presidium of the Russian Academy of Sciences (program P-03). The financial support for T.E.W. and K.T.F. from the US National Science Foundation under grant DMR-0710630 is gratefully acknowledged.
Funding AgencyGrant Number
Russian Foundation for Basic Research07-03-91353NNF_a
Presidium of the Russian Academy of SciencesP-03
Issue or Number:12
Classification Code:PACS: 62.20.Fe, 62.20.Dc, 81.40.Jj
Record Number:CaltechAUTHORS:20140716-082758115
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47253
Deposited By: Tony Diaz
Deposited On:16 Jul 2014 17:06
Last Modified:03 Mar 2020 13:01

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