Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/8747

TitleChestnut wood in compression perpendicular to the grain : non-destructive correlations for test results in new and old wood
Author(s)Lourenço, Paulo B.
Feio, A. O.
Machado, J. S.
KeywordsChestnut wood
Compression perpendicular to the grain
Non-destructive methods
Ultrasonic testing
Resistograph
Pilodyn
Ancient structures
Issue dateAug-2007
PublisherElsevier
JournalConstruction and Building Materials
Citation"Construction and Building Materials." ISSN 0950-0618. 21:8 (Aug. 2007) 1617-1627.
Abstract(s)This paper addresses the evaluation of the compressive properties of chestnut wood under compression perpendicular to the grain, using destructive and non-destructive methods. Three non-destructive methods (ultrasonic testing, Resistograph and Pilodyn) are proposed and the possibility of their application is discussed based on the application of simple linear regression models. Timber specimens were tested up to failure, divided in two different groups for assessing a possible load history related degradation, namely New Chestnut Wood (NCW), never been used structurally, and Old Chestnut Wood (OCW), obtained from structural elements belonging to ancient buildings. The specimens were also divided into four groups according to the orientation of annual growth rings towards load and wave propagation direction. The results show, in general, good correlations between compression strength and stiffness with non-destructive techniques via ultrasonic testing, Resistograph and Pilodyn. However, the orientation of the loading direction with respect to the annual growth rings must be taken into account. This conclusion, and the observation that NCW and OCW shows correlations and regression models usually different, add additional complexity to the quantitative use of non-destructive evaluation techniques for the assessment of the mechanical behaviour of timber elements.
TypeArticle
URIhttp://hdl.handle.net/1822/8747
DOI10.1016/j.conbuildmat.2006.07.011
ISSN0950-0618
Publisher versionwww.sciencedirect.com
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEC-EST - Artigos em Revistas Internacionais

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