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Response of Wood Bars to Non-Destructive Impact
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SYSNO ASEP 0463421 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Response of Wood Bars to Non-Destructive Impact Author(s) Trnka, Jan (UT-L) RID
Buchar, J. (CZ)
Stoklasová, Pavla (UT-L) RID, ORCID
Nedomová, Š. (CZ)Number of authors 4 Source Title Experimental Techniques. - : Springer - ISSN 0732-8818
Roč. 40, č. 5 (2016), s. 1387-1395Number of pages 9 s. Publication form Print - P Language eng - English Country US - United States Keywords fourier transform ; impact force ; laser vibrometer ; surface wave velocity Subject RIV BI - Acoustics Institutional support UT-L - RVO:61388998 UT WOS 000388818400004 EID SCOPUS 84987850982 DOI 10.1007/s40799-016-0139-0 Annotation The wood bars with rectangular cross section (25 × 25 mm, 300 mm in length) were impacted by an aluminum cylindrical bar in R and T directions. The wood response to this loading was characterized by the displacement of the surface of the bar. The time history of this response has been measured by a double channel laser vibrometer. The analysis of response functions was performed both in the time and frequency domain. The bar response to the impact is described using the transfer function. The knowledge of this function enables to predict the surface displacement at the given point for various forces. It is shown that the history of the surface displacement in direction of its propagation exhibits the same qualitative features independently of the kind of wood in the direction of impact and of the position of wave detection. Experiments were performed on bars made from five tree species: Pinus sylvestris L., Picea abies (L.) Karst., Fagus sylvatica, Quercus robur and Populus nigra. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2017
Number of the records: 1