[ABSTRAK
Beberapa penelitian telah menunjukkan bahwa bakteri mampu melakukan pemesinan pada logam, salah satunya adalah Acidithiobacillus ferrooxidans. Keuntungan utama menggunakan bakteri untuk proses pemesinan adalah efisiensi energi yang digunakan. Penelitian sebelumnya telah membuktikan kemampuan Acidithiobacillus ferrooxidans dalam melakukan pemesinan termasuk karakterisasi pelepasan material dan hasil akhir pada benda kerja. Namun tidak satupun dari penelitian tersebut yang meneliti kemungkinan dari bakteri tersebutmelakukan pemesinan multi-axis. Dalam penelitian ini akan dibahas mengenai kemungkinan dari Acidithiobacillus ferrooxidans dalam melakukan pemesinanmulti axis dengan menggunakan total 15 buah sampel benda kerja. Beberapa benda kerja tersebut diletakkan dalam cairan medium kultur dengan diberikansudut inklinasi 450 dengan menggunakan inklinator untuk membandingkan hasil pemesinan dengan benda kerja yang tidak diberi inklinasi. Hasil dari mikrografiSEM menunjukkan bahwa benda kerja yang diberi inklinasi memiliki kedalaman pelepasan material dan profil potongan yang berbeda dengan benda kerja yangtidak diberi inklinasi. Benda kerja yang diberi inklinasi memiliki perbedaan kedalaman pelepasan material sebesar 45% lebih banyak pada sisi yang lebihtinggi. Dengan adanya perbedaan karakteritik pemesinan, diharapkan dapat dijadikan acuan untuk pengembangan proses Biomachining multi-axis lebihlanjut.ABSTRAK
Recent studies show that some bacteria have the ability to do machining process, and one of them is Acidithiobacillus ferrooxidans. The main purpose ofusing bacteria to do the machining process is the efficiency of energy used.Previous studies have already investigate the capability of Acidithiobacillusferrooxidans to do the machining including the characterization of the materialremoved and surface finishing of the workpiece. However, none of theminvestigate the possibility for the bacteria to do the multi-axis machining. In thisresearch, the capability of Acidithiobacillus ferrooxidans to do the machiningprocess was investigated. A total of 15 workpieces were used, and placed in thecultured medium with different conditions. Some of the workpieces were placedwithout inclination angle while some of them were placed with 450 of inclinationangle. The SEM micrograph result showed that there were differences in thecutting depth and cutting profile of the workpieces which were inclined and notinclined. The higher sides have 45% more depth of material removed. Accordingto these result, there is a possibility it might led to the further development ofmulti-axis Biomachining., Recent studies show that some bacteria have the ability to do machiningprocess, and one of them is Acidithiobacillus ferrooxidans. The main purpose ofusing bacteria to do the machining process is the efficiency of energy used.Previous studies have already investigate the capability of Acidithiobacillusferrooxidans to do the machining including the characterization of the materialremoved and surface finishing of the workpiece. However, none of theminvestigate the possibility for the bacteria to do the multi-axis machining. In thisresearch, the capability of Acidithiobacillus ferrooxidans to do the machiningprocess was investigated. A total of 15 workpieces were used, and placed in thecultured medium with different conditions. Some of the workpieces were placedwithout inclination angle while some of them were placed with 450 of inclinationangle. The SEM micrograph result showed that there were differences in thecutting depth and cutting profile of the workpieces which were inclined and notinclined. The higher sides have 45% more depth of material removed. Accordingto these result, there is a possibility it might led to the further development ofmulti-axis Biomachining.] |
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