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Mechanical performance and contact zone of timber joint with oblique faces
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SYSNO ASEP 0446321 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve SCOPUS Title Mechanical performance and contact zone of timber joint with oblique faces Author(s) Kunecký, Jiří (UTAM-F) RID, SAI, ORCID
Sebera, V. (CZ)
Tippner, J. (CZ)
Hasníková, Hana (UTAM-F) RID, SAI, ORCID
Kloiber, Michal (UTAM-F) RID, ORCID, SAI
Arciszewska-Kędzior, Anna (UTAM-F)
Milch, J. (CZ)Number of authors 7 Source Title Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis. - : Mendelova univerzita - ISSN 1211-8516
Roč. 63, č. 4 (2015), s. 1153-1159Number of pages 7 s. Publication form Print - P Language eng - English Country CZ - Czech Republic Keywords bending ; contact zone ; digital image correlation ; dowel ; non-destructive testing ; timber joint Subject RIV AL - Art, Architecture, Cultural Heritage R&D Projects DF12P01OVV004 GA MK - Ministry of Culture (MK) EID SCOPUS 84943236425 DOI 10.11118/actaun201563041153 Annotation The goal of the work was to evaluate mechanical performance of full-scale timber beams containing scarf joint with a dowel. Work focused on standard testing using modular system to obtain eff ective stiff ness and strength of the beams with and without the joint. The work further researched a contact zone between two timber parts of the joint – at the scarf face. This was carried out using non-destructive optical technique – digital image correlation (DIC) and newly developed algorithm. The joint was made of Norway spruce, dims. 6×0.2×0.24 m and was loaded by two modes: a) 3-point bending and b) 4-point bending. During the loading, a sequence of images was acquired for further investigation of contact zone using the proposed algorithm. The joint with scarf and dowel provided enough eff ective stiff ness, ie. 73–93% for 3-point bending test and 71% for 4-point bending with respect to MOE measured on reference solid beams. Eff ective strength of the joint was also relatively high and in a range of 55% and 60% with respect to reference solid beams in both 3-point and 4-point bending tests. Contact length diff ered for loading modes. Mean contact length in symmetrical 4-point bending was about 40%, for asymmetrical 3-point bending test, it was approx. 20% on face closer to support and 44% on a face closer to loads. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2016 Electronic address http://dx.doi.org/10.11118/actaun201563041153
Number of the records: 1