Research Article
BibTex RIS Cite

Yuvarlak ve kare kesitli mobilya bağlantı elemanlarının eğilme direncinin karşılaştırılması

Year 2018, Volume: 18 Issue: 2, 164 - 170, 15.09.2018
https://doi.org/10.17475/kastorman.342070

Abstract

Çalışmanın amacı: Bu çalışma, dairesel ve kare kesitli mobilya bağlantı elemanlarının maksimum eğilme mukavemetinin değerlendirilmesi ve küçük test örneklerine uygulanan şekil faktörünün büyük test örneklerine uygulandığında uygulanabilirliğinin değerlendirilmesi ve kullanılan ağaç türlerine ilişkin maksimum eğilme mukavemeti ve özgül ağırlık değerlerinin referans kitaplarda verilen değerler ile karşılaştırılması amaçlanmıştır.

Materyal ve Metot: Test örneklerinin hazırlanmasında kızıl meşe (Quercus rubra), sarı kavak (Liriodendron tulipifera), çam (Pinus sp.), caobilla (Carapa guianensis), and gmelina (Gmelina arborea) ağaç türleri kullanılmıştır. Beş ağaç türü ve beş tekrardan oluşan toplam 25 kare kesitli (25x25 mm) ve 19 mm çapında yuvarlak zıvana bağlantısı uygulanan diğer 25 test örneği olmak üzere toplam 50 test örneği ilgili standartlara göre statik yük altında test edilmiştir.

Sonuçlar: Sonuçlar göstermiştir ki köşeli kesitten yuvarlak kesite 1.18 katsayısı kullanılarak küçük test örneklerine uygulama yapılabilir ancak belirtmek gerekir ki kesin sonuçlar için daha geniş kapsamlı çalışmalara ihtiyaç duyulmaktadır.

Önemli vurgular: Bu çalışmanın bir sonucu olan 1.18 katsayısının ve ayrıca özgül ağırlık ve eğilme direnci değerlerinin referans kitap değerleri ile karşılaştırma sonuçlarının, mobilya mühendisleri ve tasarımcıları tarafından tasarım süreçlerinde kullanılabileceği söylenebilir.

References

  • Markwardt L. J. and Wilson, T.R.C., 1935. Strength and Related Properties of Woods Grown in The United States: Technical Bulletin No: 479, U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 99 pp.
  • Wolfe, R.; Bodig, J., Lebow P., 2001. Derivation of Nominal Strength for Wood Utility Poles, Gen. Tech. Rep. FPL-GTR-128, Madison WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 11 pp.
  • Newlin, J., Trayer, G., 1924. Form Factors of Beams Subjected to Transverse Loading, Rep. 181 to Nat. Advisory Committee for Aeronautics, Reprinted 1941 as Rep. 1310, Madison, WI: U. S. Department of Agriculture, Forest service Forest Products Laboratory.
  • Erdil, Y.Z., Kasal, A., 2005. Bending Moment Capacity of Rectangular Mortise and Tenon Furniture Joints: Forest Products Journal, 55(12): 209-213.
  • Eckelman, C.A., Erdil, Y.Z., Haviarova, E., 2002. Effect of Cross Holes on the Strength of Chair and Table Legs: Forest Product journals, 52 (5): 67-70.
  • Efe, H., Zhang, J., Erdil, Y.Z., Kasal, A., 2005. Moment Capacity of Traditional and Alternative T-Type End-to-Side-Grain Furniture Joints: Forest Products Journal, 55(5): 69-73.
  • American Society for Testing and Materials, 1983. Standart Methods of Testing Small Clear Specimens, Standard D 143 - 229, ASTM, West Conshohocken, Philadelphia.
  • Chudnoff, M., 1984. Tropical Timbers of the World, Agricultural Handbook No.607, Madison WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 464 pp.

Effects of cross-sectional shape on the bending strength in furniture joints

Year 2018, Volume: 18 Issue: 2, 164 - 170, 15.09.2018
https://doi.org/10.17475/kastorman.342070

Abstract

Aim of the study: Tests were carried out to evaluate the ultimate bending strength of the circular and square cross sectioned furniture joint members and find out whether the form factor is applicable to the small specimens as they are applied to large specimens and compare the maximum bending strength and specific gravity values of these wood species to those that are specified in reference books.

Material and methods: The specimens were prepared from Red oak (Quercus rubra), Yellow poplar (Liriodendron tulipifera), Southern pine (Pinus sp.), Caobilla (Carapa guianensis), and Gmelina (Gmelina arborea). Based on five wood species by five replications, 25 square cross sectional (25 x 25 mm) specimens and 25 specimens which included 19 mm diameter circular mortise and tenon joints, a total of 50 specimens were prepared and tested under the static bending test according to related standards.

Main results: Results gave the primary indication that the form factor of 1.18 from square to circular cross section is applicable to small clear specimens; however, it should be noted that absolute conclusions require studies in much wider spectrum.

Research highlights: The results of this study indicate that designers and furniture engineers may obtain good estimates from 1.18 form factor and comparison of MOR values and specific gravity of the wood species with the book values.

References

  • Markwardt L. J. and Wilson, T.R.C., 1935. Strength and Related Properties of Woods Grown in The United States: Technical Bulletin No: 479, U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 99 pp.
  • Wolfe, R.; Bodig, J., Lebow P., 2001. Derivation of Nominal Strength for Wood Utility Poles, Gen. Tech. Rep. FPL-GTR-128, Madison WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 11 pp.
  • Newlin, J., Trayer, G., 1924. Form Factors of Beams Subjected to Transverse Loading, Rep. 181 to Nat. Advisory Committee for Aeronautics, Reprinted 1941 as Rep. 1310, Madison, WI: U. S. Department of Agriculture, Forest service Forest Products Laboratory.
  • Erdil, Y.Z., Kasal, A., 2005. Bending Moment Capacity of Rectangular Mortise and Tenon Furniture Joints: Forest Products Journal, 55(12): 209-213.
  • Eckelman, C.A., Erdil, Y.Z., Haviarova, E., 2002. Effect of Cross Holes on the Strength of Chair and Table Legs: Forest Product journals, 52 (5): 67-70.
  • Efe, H., Zhang, J., Erdil, Y.Z., Kasal, A., 2005. Moment Capacity of Traditional and Alternative T-Type End-to-Side-Grain Furniture Joints: Forest Products Journal, 55(5): 69-73.
  • American Society for Testing and Materials, 1983. Standart Methods of Testing Small Clear Specimens, Standard D 143 - 229, ASTM, West Conshohocken, Philadelphia.
  • Chudnoff, M., 1984. Tropical Timbers of the World, Agricultural Handbook No.607, Madison WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 464 pp.
There are 8 citations in total.

Details

Primary Language English
Journal Section Articles
Authors

Mehmet Acar

Harun Diler

Yusuf Ziya Erdil

Publication Date September 15, 2018
Published in Issue Year 2018 Volume: 18 Issue: 2

Cite

APA Acar, M., Diler, H., & Erdil, Y. Z. (2018). Effects of cross-sectional shape on the bending strength in furniture joints. Kastamonu University Journal of Forestry Faculty, 18(2), 164-170. https://doi.org/10.17475/kastorman.342070
AMA Acar M, Diler H, Erdil YZ. Effects of cross-sectional shape on the bending strength in furniture joints. Kastamonu University Journal of Forestry Faculty. September 2018;18(2):164-170. doi:10.17475/kastorman.342070
Chicago Acar, Mehmet, Harun Diler, and Yusuf Ziya Erdil. “Effects of Cross-Sectional Shape on the Bending Strength in Furniture Joints”. Kastamonu University Journal of Forestry Faculty 18, no. 2 (September 2018): 164-70. https://doi.org/10.17475/kastorman.342070.
EndNote Acar M, Diler H, Erdil YZ (September 1, 2018) Effects of cross-sectional shape on the bending strength in furniture joints. Kastamonu University Journal of Forestry Faculty 18 2 164–170.
IEEE M. Acar, H. Diler, and Y. Z. Erdil, “Effects of cross-sectional shape on the bending strength in furniture joints”, Kastamonu University Journal of Forestry Faculty, vol. 18, no. 2, pp. 164–170, 2018, doi: 10.17475/kastorman.342070.
ISNAD Acar, Mehmet et al. “Effects of Cross-Sectional Shape on the Bending Strength in Furniture Joints”. Kastamonu University Journal of Forestry Faculty 18/2 (September 2018), 164-170. https://doi.org/10.17475/kastorman.342070.
JAMA Acar M, Diler H, Erdil YZ. Effects of cross-sectional shape on the bending strength in furniture joints. Kastamonu University Journal of Forestry Faculty. 2018;18:164–170.
MLA Acar, Mehmet et al. “Effects of Cross-Sectional Shape on the Bending Strength in Furniture Joints”. Kastamonu University Journal of Forestry Faculty, vol. 18, no. 2, 2018, pp. 164-70, doi:10.17475/kastorman.342070.
Vancouver Acar M, Diler H, Erdil YZ. Effects of cross-sectional shape on the bending strength in furniture joints. Kastamonu University Journal of Forestry Faculty. 2018;18(2):164-70.

14178  14179       14165           14166           14167            14168