Bamboo fiber is a natural fiber that is easily degraded by microbes and potentially becomes an alternative fiber in the future due to its availability, which is abundantly cheap, and grows throughout the year and also isn't affected by the season. The application of bamboo fiber is a solution for environmental issues and a business prospect of synthetic fibers that are expected to decrease in line with petroleum. This study presents result of the studies of various types of bamboo, fiber extraction process both mechanically and chemically, composite fabrication based on various matrices, characterization carried out to reveal performance related to the requirements of various applications, weaknesses and improvements. Based on the result of this study, the researchers obtain information related to development and research status of bamboo fiber along with the application and weakness, as well as opportunity to make some improvements.
Pengelasan merupakan teknologi yang banyak digunakan untuk penyambungan logam. Namun hasil pengelasan yang diterapkan pada paduan aluminium tidak selalu menghasilkan sambungan dengan kualitas yang baik, hal ini dapat disebabkan salah satu faktornya adalah dalam menentukan jenis logam pengisi. Penentuan jenis logam pengisi ini akan menentukan kekuatan hasil las dari paduan aluminium. Untuk melihat sejauh mana pengaruh jenis logam pengisi tersebut, maka pada penelitian ini penulis menentukan tiga jenis logam pengisi yaitu ER 4043, ER 2319, ER 5056 pada proses pengelasan GTAW untuk paduan Aluminium 6061-T4. Dari hasil pengujian tarik diperoleh nilai kekuatan tarik terbesar pada paduan Aluminium 6061-T4 yang menggunakan jenis logam pengisi ER 4043 yaitu sebesar 19,694 kgf/mm2. Hasil distribusi kekerasan untuk ketiga jenis logam pengisi nilai kekerasan paling rendah terletak pada daerah HAZ sehingga pada pengujian tarik spesimen patah rata-rata di daerah HAZ karena pada daerah tersebut terjadi overagedregion.
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