Maximum Tensile Stress of Eucalyptus Sections Finger Jointed with PVA Adhesive
- 1Forest Products Division, Forest Research Institute, New Forest P.O., Dehradun 248006, Uttarakhand, India
- 2Forest Products Division, Forest Research Institute, New Forest P.O., Dehradun 248006, Uttarakhand, India
- 3Forest Products Division, Forest Research Institute, New Forest P.O., Dehradun 248006, Uttarakhand, India
Res. J. Agriculture & Forestry Sci., Volume 4, Issue (8), Pages 10-13, August,8 (2016)
An experiment was conducted to assess the tensile strength of finger jointed sections of Eucalyptus wood. A finger profile of 21 mm length, 7 mm pitch and 1.4 mm tip thickness was used in the study. The sections were joined using PVA adhesive. For comparison, joint-free sections also were tested. The results showed that the joints resulted in poor tensile strength. The jointed samples gave only 23.57% efficiency of maximum tensile stress compared to 99.7 N/mm2 shown by clear wood sections. The study illustrates the necessity of adopting suitable strong adhesives when making finger jointed sections out of eucalyptus species.
- Lakda udyog darshan (2005)., Is finger jointing for you?., Feb-March, 39-43.
- Madsen B. and Little ford T.W. (1962)., Finger joints for structural usage., Forest Product Journal., 12(2), 68-73.
- Selbo M.L. (1963)., Effect of joint geometry on tensile strength of finger joints., Forest Products Journal., 13(9), 390-400.
- Bustos C., Hernandez R.E., Beauregard R. and Mohammad M. (2011)., Effects of end pressure on the finger joint quality of black spruce lumber: A microscopic analysis., Maderas. Ciencia y tecnologia., 13(3), 319-328.
- IPIRTI. (2001)., Indigenous finger jointing machine – IPIRTI BMTPC demonstration facility for finger jointing of plantation timber., IPIRTI NEWS., 3(4).
- Kishan Kumar, V.S. Sharma, C. M. and Gupta S. (2013)., Role of finger tip area on flexural strength properties of finger-jointed sections., International Wood Products Journal., 4(2), 101-106.
- Singh C.P., Gupta S., Sharma C. M. and Kishan Kumar V. S. (2013)., Effect of Solid Content of Adhesive on the Compression Strength of Finger Jointed Sections., Indian Forester., 139(7), 590-593.
- Sekhar A.C. and Rajput S.S. (1968)., A preliminary note on the study of strength properties of Eucalyptus hybrid of Mysore origin., Indian Forester., 94(12), 886-893.
- Jaitly V.P., Pant B.C. and Gupta S.B. (1983)., A Note on the working and finishing qualities of Eucalyptus species., Indian Forester., 109(12), 917-925.
- Luna R.K. (2005)., Eucalyptus tereticornis Sm., Plantation trees, International Book Distributors, Dehradun, India, 354-372.
- Rajput S.S., Shukla N.K., Lal M. and Khanduri A.K. (1992)., Physical and mechanical properties of Eucalyptus Hybrid from Punjab and Haryana., Journal of Indian Academy of Wood Sci., 23(1), 49-60.
- BIS. (1986)., Method of testing of small clear specimens of timber., IS 1708 (part 12), Bureau of Indian Standards, New Delhi.
- Awan A.R., Chughtai M.I., Ashraf M.Y., Mahmood K., Rizwan M., Akhtar M., Siddiqui M.T. and Khan R.A. (2012)., Comparison for physico-mechanical properties of farm-grown eucalyptus camaldulensis dehn, With conventional timbers., Pak. J. Bot., 44(6), 2067-2070.
- Kishan Kumar V.S., Upreti N.K. and Khanduri A.K. (2010)., Effect of finger tip area on the compression strength of finger jointed sections., Journal of Indian Academy of Wood Sci., 7(1-2), 25-29.
- Batista A., Rodrigo M., Calil C. Jr. and Martinez M. (2002)., Tensile strength evaluation on structural timber finger joints., Maderas. Ciencia y tecnologia., 4(2), 168-178.