Use of lower tolerance limits for designing chair frames with round-end mortise and tenon joints

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dc.authorid0000-0001-6657-139X
dc.authorid0000-0002-4632-0072
dc.authorid0000-0001-9101-0981
dc.authorid0000-0003-0114-3030
dc.contributor.authorUysal, Mesut
dc.contributor.authorKuskun, Tolga
dc.contributor.authorSmardzewski, Jerzy
dc.contributor.authorKasal, Ali
dc.contributor.authorHaviarova, Eva
dc.date.accessioned2026-02-08T15:15:36Z
dc.date.available2026-02-08T15:15:36Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractIn this study, the reliability of the mortise-tenon (MT) joints was examined experimentally and numerically. The joint strength has been determined empirically and numerically, but the reliability of the joint does not rely on a single asset - mean and standard deviation. The prediction of its strength also refers to a single value in the future population, but tolerance limits are related to a portion of the future population. Therefore, ensuring joint reliability comes into prominence not only for empirical data but also for theoretical and numerical analysis. For this purpose, the moment capacity of the T-shaped MT joints constructed of white oak was determined, and the lower tolerance limits (LTLs) approach was used to construct confidence/proportion (gamma/beta) levels for reliability. According to the results, the moment capacity of the MT joints was 341 Nm. The LTL values at 0.95/0.95, 0.99/0.95, 0.95/0.99, and 0.99/0.99 gamma/beta levels were 231, 226, 187 and 181 Nm, respectively. The normal stresses at each gamma/beta level were calculated based on the moment capacity and tenon sizes and were compared with the finite element method (FEM). Experimental and numerical results varied from 0.3% to 13.4%. Furthermore, a side frame was imposed to a vertical load of 1000 N on the front leg, and the moment of the joint on the side rail to the back post was measured (196 Nm). The side frame was modeled on ABAQUS - FEM software - and subjected to a moment of 196 Nm on the side rail. The theoretical and numerical results of stresses on joints differed from - 4.3% to 5.8%. The study showed that the reliability value is known, and; the joints could be designed by using FEM.
dc.description.sponsorshipMinistry of National Education of the Republic of Turkey; Wood Research Laboratory at Purdue University
dc.description.sponsorshipThis study was supported by the Ministry of National Education of the Republic of Turkey, the Wood Research Laboratory at Purdue University, the Woodworking Industrial Engineering Mechanical Laboratory at Mugla Sitki Kocman University, and the Laboratory of Furniture Design at Poznan University of Life Sciences.
dc.identifier.doi10.1080/17480272.2024.2352801
dc.identifier.endpage438
dc.identifier.issn1748-0272
dc.identifier.issn1748-0280
dc.identifier.issue2
dc.identifier.scopus2-s2.0-105001794858
dc.identifier.scopusqualityQ2
dc.identifier.startpage427
dc.identifier.urihttps://doi.org/10.1080/17480272.2024.2352801
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5868
dc.identifier.volume20
dc.identifier.wosWOS:001223929800001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Ltd
dc.relation.ispartofWood Material Science & Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectTolerance analysis
dc.subjectfinite element method
dc.subjectchair design
dc.subjectfurniture joint
dc.subjectreliability
dc.titleUse of lower tolerance limits for designing chair frames with round-end mortise and tenon joints
dc.typeArticle

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