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Tekat Dwi Cahyono
Universitas Darussalam Ambon
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Other

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Journal : PERENNIAL

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STABILISASI DIMENSI KAYU DENGAN APLIKASI PARAFIN CAIR . Syahidah; Tekat Dwi Cahyono
PERENNIAL Vol. 4 No. 1 (2008)
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v4i1.178

Abstract

Wood is a special material which can swell and shrink with the change of environmental humidity. The aim of this research was to enhance the dimensional stability of wood. Clear specimens of jackfruit wood (Artocarpus heterophyllus) ) measuring 15 cm (L) x 2 cm (R) x 2 cm (T) and mangium wood (Acacia mangium Wild.) measuring 5 cm (L) x 5 cm (R) x 5 cm (T) were prepared for treatment. The samples were firstly soaked in a liquid paraffin with 0% concentration (100% kerosene soluble), 33.3 %, 66,6% and 100%. All samples were then vacuumed for 1 hour and soaked in water for 24 hours. Results indicated that the best response for dimensional stability was performed by mangium with 33% paraffin and jackfruit wood with 66% paraffine. In addition, moisture content of all treated samples decreased after treatment. This research also showed that the treatment had no significant effect to MOE, MOR and hardness of the wood. Key words: Dimensional stability of wood, liquid parafin, mangium, jackfruit wood References
PENDUGAAN KEKAKUAN KAYU BORNEO DENGAN METODE GELOMBANG ULTRASONIK . Syahidah; Tekat Dwi Cahyono
PERENNIAL Vol. 6 No. 1 (2010)
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v6i1.193

Abstract

Borneo wood is a name for various species commercial wood. The aimed of this study are measured stifness (MOE) of borneo wood using non destructive method i.e. ultrasonic wave. Fiveteen beam sample were produced from borneo wood about 8 cm thick and 12 cm width with 400 cm, 250 cm and 150 cm length. Beam with 250 cm and 150 cm length produced from beam with 400 cm length after stifness test have done using ultrasonic (dynamic test) and UTM (static test). Result showed that dynamic MOE of borneo wood for 400 cm, 250 cm and 150 cm length, are 19.10 G.Pa, 18.48 G.Pa and 15.90 G.Pa, respectively. Wood about 400 cm and 150 cm length were different significantly. Result also showed that dynamic MOE of borneo wood 30% higher than static MOE at vertical position test for beam with 400 cm length and 20% higher for horisontal position at the same testing method. Key words : Borneo wood, stifness, ultrasonic, MOE, MOR
Co-Authors . Syahidah A.A. Ketut Agung Cahyawan W Dedy Sofyan Dedy Sofyan Farida Bahalwan Fauzi Febrianto Fitriyanti Kaliky Imam Wahyudi Indrawan, Imam Wahyudi Jumadil Thepu Juni La Djumat Kamaruddin Kamaruddin Kapitanhitu, Rusli La Djumat, Juni M Nasir Benunur Muhammad Bula Muhammad Nasir Benunur Narti Kawarnidi Noviyanti, Eka Nurhaya Yusuf Putra, Guruh Sukarno Samin Botanri Sedek Karepesina Sudiono Wali Syarif Ohorella Trisna PRIADI Wardhani, Miranti Kusuma