Kekuatan Tekan Sejajar Serat dan Tegak Lurus Serat Kayu Ulin (Eusideroxylon Zwageri)
DOI:
https://doi.org/10.5614/jts.2014.21.1.2Keywords:
Tekan sejajar serat, Tekan tegak lurus serat, Ulin, Beban proporsional, Beban ultimit.Abstract
Abstrak. Kayu Ulin (Eusideroxylon Zwageri) termasuk salah satu kayu dengan kekuatan tinggi. Penelitian ini bertujuan untuk mendapatkan kekuatan tekan sejajar serat dan tegak lurus serat kayu Ulin dengan pengujian eksperimental. Hasil yang diperoleh adalah kekuatan tekan sejajar serat pada beban proporsional sebesar 50,53 MPa (deviasi standar 11,35 MPa dan koefisien variasi 22,47%), kekuatan tekan sejajar serat pada beban ultimit 55,64 MPa (deviasi standar 11,17 MPa dan koefisien variasi 20,07%), kekuatan tekan tegak lurus serat pada beban proporsional sebesar 20,26 MPa (deviasi standar 2,10 MPa dan koefisien variasi 10,31%), dan kekuatan tekan tegak lurus serat pada beban ultimit 29,74 MPa (deviasi standar 4,62 MPa dan koefisien variasi 15,52%). Modulus elastisitas tekan sejajar serat yang diperoleh sebesar 10155,05 MPa, dan modulus plastisitas tekan sejajar serat sebesar 1317,83 MPa. Modulus Elastisitas tekan sejajar serat yang diperoleh sebesar 1381,84 MPa, dan modulus plastisitas tekan tegak lurus serat sebesar 195,77 MPa. Hasil penelitian ini diharapkan dapat memberikan sumbangan ilmiah untuk basis data sifat mekanika kayu Indonesia dan khususnya untuk perencanaan komponen struktur tekan dan lentur.Abstract. Ulin (Eusideroxylon Zwageri) is one of wood species with high strength. This study aims to obtain the compressive strength parallel and perpendicular to the grain carry by experimental tests. The result obtained are the compressive strength parallel to the grain at proportional load 50.53 MPa (standard deviation 11.35 and coefficient of variation 22,47%), the compressive strength parallel to the grain at ultimate load 55.64 MPa (standard deviation 11.17 and cov 20,07%), the compressive strength perpendicular to the grain at proportional load 20.36 MPa (standard deviation 2.10 MPa and cov 10,31%), and the compressive strength perpendicular to the grain at ultimate load 29.74 MPa (standard deviation 4.62 MPa and cov 15,52%). Modulus of elasticity compression parallel to the grain obtained from this research is 10155.05 MPa, and modulus of plasticity compression parallel to the grain 1317,83 MPa. Modulus of elasticity compression perpendicular to the grain is 1381,84 MPa, and modulus of plasticity compression perpendicular to the grain is 195,77 MPa. The result is expected to contribute to general scientific databases mechanical properties of wood in Indonesia and particularly in the design of the compressive and flexural structural components.
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