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All Journal Equilibrium Journal of Chemical Engineering Jurnal Manajemen dan Teknologi Rekayasa
Karimah, Armitha Lisanul
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Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Kegagalan Material Pada Sayap Pesawat Terbang (Review) Karimah, Armitha Lisanul; Mawarda, Mei Iftita; Pauru', Wilson; Ramadhan, Yanuar; Amalia, Yasmina
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 1, No 1 (2022): Juli
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (706.501 KB) | DOI: 10.28989/jumantara.v1i1.1266

Abstract

Penelitian ini bertujuan untuk mengetahui mekanisme analisis kegagalan material yang dilakukan pada sayap pesawat terbang. Analisis dilakukan dalam bentuk inspeksi visual, fraktografi makro, dan fraktografi SEM. Analisis tersebut menggunakan uji komposisi dengan spektroskopi X-ray fluorescence (XRF) dan Oxford Instruments X-MET 5100, analisis makroskopik dengan kamera digital Nikon SMZ 1500 dan mikroskop stereo, dan analisis fraktografi pembesaran yang lebih tinggi dilakukan dengan menggunakan FEI XL40 SFEG SEM. Berdasarkan analisis yang dilakukan, ditemukan bahwa kegagalan terjadi pada komponen sayap pesawat,  retakan intergranular karena kelemahan struktur mikro, adalah penyebab kegagalan material. Analisis kegagalan material sangat penting untuk mengetahui dan mengungkapkan penyebab dan penanggulangan komponen yang gagal. Bentuk kegagalannya bisa berupa retakan, patah tulang, korosi, dan lain-lain.
Study on the Effect of Cyanide Concentration on Gold Leaching Recovery in Ore at PT Indo Muro Kencana Putri GF, Frideni Yushandiana; Karimah, Armitha Lisanul; ., Sulaeman
Equilibrium Journal of Chemical Engineering Vol 7, No 2 (2023): Volume 7, No 2 December 2023
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v7i2.77833

Abstract

ABSTRACT. Indonesia is a country that has abundant natural resources, including non-renewable natural resources such as various types of metals, natural gas, petroleum and others. Besides that, Indonesia also has an important role in supplying the world's gold raw materials. Therefore, it is necessary to develop technology and science in the mining industry, especially gold to increase process optimization and increase the added value of the mining products themselves. One of the gold extraction processes can be carried out hydrometallurgically using the cyanidation method using agitator leach, as was done at PT Indo Muro Kencana. Process optimization is carried out with various test work, such as leaching tests, by varying the operating parameters of the leaching. The variations of parameters used in this study are the cyanide concentrations at 600 ppm, 700 ppm, and 800 ppm. The results of the analysis show that the optimal cyanide concentration for leaching of PT Indo Muro Kencana's gold ore is 600 ppm by controlling the Rate rate control.Keywords:Cyanidation, Gold, Leaching, Extraction.
Co-Authors Mawarda, Mei Iftita Pauru', Wilson Putri GF, Frideni Yushandiana Sulaeman . Yanuar Ramadhan Yasmina Amalia, Yasmina