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Karakteristik Kekuatan Bending Kayu Komposit Polyester Diperkuat Serat Pandan Wangi dengan Filler Serbuk Gergaji Kayu Nasmi Herlina Sari; IGNK Yudhyadi; Emmy dyah S
Jurnal Energi Dan Manufaktur Vol 6 No 2 (2013): Oktober 2013
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (243.734 KB)

Abstract

AbstrakBeberapa kelemahan kayu yang tidak memungkinkan mendapat papan yang lebar dan stabil,maka dimulailah dibuat papan buatan dengan berbagai cara pengerjaan dan jenis papanbuatan. Penelitian ini bertujuan untuk mengetahui karakteristik kayu komposit polyester yangdiperkuat oleh serat pandan wangi dan serbuk kayu gergaji. Pembuatan kayu kompositdilakukan dengan menggunakan teknik hand lay up. Material penyusun kayu komposit adalahserat pandan wangi dengan variasi panjang serat 15 mm, 20 mm, 25 mm, 50 mm dan 100 mm,dan fraksi volume serat 20% dan 30% dan filler serbuk kayu gergaji sengon 5% (fraksivolume). Perekat yang dipakai adalah resin polyester dengan hardener 1% metil etil peroksida.Pengujian bending telah dilakukan dengan metode three point bending dan telah dianalisisstatistik menggunakan Two Way ANOVA. Hasil penelitian menunjukkan bahwa pada fraksivolume 20% serat, menunjukkan terjadinya kecenderungan peningkatan kekuatan bendingpada variasi panjang serat 15, 20, 25, 50 (mm) dengan rata-rata kekuatan bending secaraberurutan masing-masing sebesar 56,7 Mpa, 67 Mpa, 90 Mpa dan 93.33 Mpa. Selanjutnyanilai terendah dimiliki oleh kayu komposit dengan panjang serat 100 mm yaitu sebesar 78.3Mpa. Sedangkan pada fraksi volume serat 30% dengan variasi panjang serat yang samacenderung meningkat pada variasi panjang serat 15 mm, 20 mm dan 25 mm secara berurutanyaitu sebesar 77 Mpa, 86.1 Mpa, dan 93.6 Mpa tetapi kayu komposit dengan panjang 50 mmdan 100 mm cenderung menurun dengan nilai kekuatan bending berurutan yaitu sebesar76.11 Mpa dan 73.6 Mpa.Kata kunci: Kayu komposit, serat pandan wangi, filler, serbuk gergaji kayu, polyesterAbstractSome disadvantages of wood that does not allow the board received a wide and stable, thenbegan the boards made workman ship made in various ways and types of artificial board. Thisstudy aimed to investigate the characteristics of composite wood polyester reinforced bypandannus amaryllilofius fiber and sawdust. Manufacture of wood composites made usinghand lay-up techniques. Constituent materials of the composite wood is fiber length variation offiber 15 mm, 20 mm, 25 mm, 50 mm and 100 mm, and the fiber volume fraction of 20% and30%, while sengon sawing wood dust 5% filler (volume fraction). the matrix is using polyesterresin with 1% hardener from metal etil keton peroxide. And then bending testing was done withthree point bending method. and then statistic analysis was done using two way ANOVA. Theresults showed that at 20% fiber volume fraction, showed an increasing trend in the variation ofbending strength fiber length 15, 20, 25, 50 (mm) with an average bending strengthsequentially respectively 56.7 MPa, 67 MPa, 90 MPa and 93.33 MPa. Furthermore, the lowestvalue is owned by a wood composite with a fiber length of 100 mm is equal to 78.3 Mpa. Whilethe fiber volume fraction of 30% with a variation of the same fiber length is 15 mm, 20 mm, 25mm, 50 mm and 100 mm are also experiencing an increasing trend in the variation of fiberlength of 15 mm, 20 mm and 25 mm respectively amounting to 77 Mpa , 86.1 MPa and 93.6Mpa. But composite wood with a length of 50 mm and 100 mm tends to decline with successivebending strength value that is equal to 76.11 MPa and 73.6 MPa.Key Word: Composites wood, pandanus amaryllifolius of fiber, filler, sawdust wood, polyester
Pemanfaatan Alat Pengupas Kulit Kopi untuk Membantu Kerja Manual Petani Kopi di Dusun Selelos, Kecamatan Gangga Lombok Utara Ida Bagus Alit; I Gede Bawa Susana; Emmy Dyah S; Rudy Sutanto; Maharsa Pradityatama
JURNAL KARYA PENGABDIAN Vol. 6 No. 1 (2024): April, Jurnal Karya Pengabdian
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v6i1.165

Abstract

The use of smallholder plantation land in the North Lombok district is seen from the types of plants carried out by agricultural or plantation groups consisting of coconut plantations with an area of 10,574.62 tons and a production yield of 11,397.08 tons. Coffee plants with a planting area 1,315.57 with a production yield of 780.46 tons. Specifically for coffee plantations, farmers usually only process post-harvest through drying, after which they are immediately sold. To increase the selling value, it is necessary to utilise technological results such as using a coffee skin peeler. This tool helps increase the productivity of coffee farmers. The dedication will be carried out in Selelos Hamlet, Gangga sub-district, North Lombok district. The implementation of this service program includes making a coffee peeler, presentation, and counselling on using the tool, along with demonstrations. As a result, the coffee skin peeler has a production capacity of 100 kg per hour. The quality of the coffee beans produced is clean and free of impurities. The productivity of using a coffee skin peeler machine is greater and shorter when compared to the manual process.