Analisis Layer System Bambu Laminasi Berdasarkan Penyebaran Kerapatan Ikatan Pembuluhnya

Effendi Tri Bahtiar, Naresworo Nugroho, Surjono Surjokusumo, Lina Karlinasari, Atmawi Darwis

Abstract


Anatomically, bamboo is constructed from many types of cells. Vascular bundles are the cells which give the highest contribution to the bamboo strength, thus the density distribution of vascular bundles could be used as the main variable for analyzing the layer system of bamboo strip and laminated bamboo. The density of vascular bundles distribution decreases gradually from the outer to inner part in a regular manner which could be fitted by linear or nonlinear function. Ratio of modulus of elasticity (E) which widely used in transformed cross section (TCC) method for analyzing the layer system are substituted by ratio of density distribution of vascular bundles with asumption that both are highly correlated. The data in this study proved that there are high Pearson’s corellation between the theoretical and the empirical result, and the paired t-student test also showed both are not significantly different; thus, this new method could be applied in very good result. There are 3 models applied in this study, namely linear, logarithm, and power. Power model is the best among others since its theoretical gives the nearest estimation to the empirical measurement.


Keywords


bamboo and laminated bamboo; mechanical properties; model; transformed cross section; vascular bundles

Full Text:

PDF

References


Andre JP. 1998. A Study of te Vascolar Organization of Bamboos (Poaceae-bambusae) Using Microcasting Method. IAWA J. 19(3): 265-278.

Li HB, Shen SP. 2011. The mechanical properties of bamboo and vascular bundles. J Mater Res. 26(21): 2749-2756.

Mustafa MT, Wahab R, Sudin M, Sulaiman O, Kamal NAM, Khalid I. 2011. Anatomical and microstructures features of tropical bamboo Gigantochloa brang, G. levis, G. scotechinii and G. wrayi, International J For, Soil Eros. 1(1): 25-35.

Ray AK, Mondal S, Das SK, Ramanchandrararo P. 2005. Bamboo - A functionally graded composite-correlation between microstructure and mechanical strength. J. Mater Sci. 40 (19): 5249-5253.




View JIPI Stats

 

   Creative Commons License

This journal is published under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License.

Editorial Office: Institute for Research and Community Services (LPPM), Andi Hakim Nasoetion Building, 5th Floor, Jl. Raya Darmaga, IPB Darmaga Campus, Bogor, West Java, Indonesia 16680, Telp/Fax: +62251-8622323, email: jipi-lppm@apps.ipb.ac.id; jipi-lppm@ipb.ac.id