Studi Pengaruh Variasi Kedalaman Air Laut Tropis Terhadap Penempelan Biofouling Pada Material Bambu Laminasi

Ramadhani, Hendra Marta (2015) Studi Pengaruh Variasi Kedalaman Air Laut Tropis Terhadap Penempelan Biofouling Pada Material Bambu Laminasi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Biofouling menjadi permasalahan manusia dalam operasional perahu. Bioufouling yang tertempel menyebabkan peningkatan kekasaran pada lambung kapal dan propeller. Permasalahan ini berdampak pada nilai hambatan kapal dan total biaya bahan bakar. Permasalahan lain yang sering terjadi yaitu ketersediaan kayu sebagai bahan baku pembuatan kapal ikan sulit diperoleh di Indonesia. Tujuan dari tugas akhir ini adalah untuk mendapatkan bahan alternatif sebagai material konstruksi kapal ikan. Pertama, dibuat spesimen uji dari material bambu laminasi dan kayu jati. Spesimen uji berjumlah 36 buah untuk masing-masing material. Kedua, material uji dikondisikan dalam air laut. Kedalamam air laut bervariasi dengan interval 1 m dengan sarat terdalam 3 m. Pengkondisian dilakukan selama 8 minggu dan di periksa setiap 2 minggu sekali. Ketiga, dilakukan analisa terhadap hasil pengujian. Analisa berkaitan dengan berat dan jumlah biofouling yang menempel pada masing-masing spesimen secara periodik dalam dua minggu sekali. Berdasarkan analisa yang dilakukan terhadap hasil rekapitulasi pengujian ratarata setiap periode diketahui bahwa jumlah penempelan biofouling terendah terdapat pada spesimen bambu laminasi (bambu laminasi 35 ind/m2 dan kayu jati 57 ind/m2 ). Hasil perbandingan biaya operasional akibat biomassa penempelan biofouling pada material bambu laminasi lebih ekonomis 0.02% (bambu laminasi seharga Rp 28,888,723.90 dan kayu jati seharga Rp 28,967,511.57). Sehingga dapat disimpulkan bahwa bambu laminasi adalah material yang lebih efektif daripada material kayu jati. =============================================================================================== Biofouling is a problem during ship become ship service. The biofouling attached increased friction between sea water and hull or propeller. The friction would increase ship resistence value and overall fuel cost. The other problem that often occus is difficulties in obtaining wood as raw material in fishing vassel production in Indonesia. The objective of this final project is to give recommendation of alternative material in fishing vessel production. Firstly, the spesiment test from wood and laminated bamboo is created. The specimen number is 36 items for each material with same dimension. Secondly, specimen test is treated in sea water. The sea water depth varied with interval of in and the deepest point is 3 m. the treatment is executed in 8 weeks. And the examination is carried on each 2 weeks. Thirdly, the test result is analyzed. The analysis is related to weight and number of biofouling that attach to each speciment in accordance to the result of test carrion in each period. The results recapitulation of the average value of each period was known that the lowest amount attachment of biofouling contained spesimens of bamboo lamination spesimens (bamboo laminated was 35 ind/m2 dan wood was 57 ind/m2). The comparison of operational costs due to biomass attachment of biofouling on laminated bamboo material more economical 0.02% (laminated bamboo was Rp 28,888,723.90 dan wood was Rp 28,967,511.57). It can be concluded the bamboo lamination as an alternative material that is more effective than wood material.

Item Type: Thesis (Undergraduate)
Additional Information: RSPe 623.848 Ram s
Uncontrolled Keywords: Biofouling, Kedalaman Laut, Kapal Ikan, Biomassa
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions: Faculty of Marine Technology > Marine Engineering > (S1) Undergraduate Theses
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 15 Aug 2017 07:20
Last Modified: 15 Aug 2017 07:20
URI: http://repository.its.ac.id/id/eprint/48589

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