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All Journal JURNAL CRANKSHAFT Jambura Journal of Electrical and Electronics Engineering Interdisciplinary Social Studies Sinergi Polmed : Jurnal Ilmiah Teknik Mesin
Afandy, Moh
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Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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RANCANG BANGUN ALAT PENGERING KOPRA SKALA INDUSTRI KECIL MENENGAH DENGAN PENDEKATAN QUALITY FUNCTION DEPLOYMENT Wirakusuma, Kadex Widhy; Kadriadi, Kadriadi; Alfian, Muhammad; Afandy, Moh; Mubarok, Abdul Haris
SINERGI POLMED: Jurnal Ilmiah Teknik Mesin Vol. 5 No. 2 (2024): Edisi Agustus
Publisher : Politeknik Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51510/sinergipolmed.v5i2.1662

Abstract

Proses pengolahan kopra yang dilakukan oleh petani    kelapa dengan cara pengasapan, cara ini tidaklah efektif, karena asap yang ditimbulkan dari proses pengasapan menjadi polusi sehinga proses pengeringan dengan metode pengasapan tidak ramah lingkungan, dan proses relatif tidak optimal karena proses pengeringan memanfaatkan asap pembakaran menggunakan bahan bakar sambuk kelapa menyebabkan suhu dan kelembapan tidak terkontrol sehingga kualitas kopra yang dihasilkan bermutu rendah. Sehingga dibutuhukna proses pengerin kopra yang lebih ramah lingkungan. Tujuan dari metode ini adalah menghasilkan rancangan yang sesuai dengan harapan dari pelaku IKM pengering kopra, sehingga dalam proses mendesain alat pengering kopra penelitian ini menggunakan pendekatan QFD, dengan pendekatan QFD dalam proses mendesain alat pengering kopra memungkinkan para pelaku IKM terlibat langsung dalam prosesnya sehingga hasil rancangan sesuai dengan keinginan pengguna alat. Rancang bangun ini menghasilkan alat yang mempunyai dimensi, panjang 119 cm, lebar 93 cm, dan tinggi 142,8 cm. Dari matriks HoQ diperoleh kebutuhan teknis dari harapan pengguna alat berupa bahan yang berkualitas, bentuk alat tidak membutuhkan space yang banyak, kehandalan alat, dan maintenance alat. Aspek teknis dari matriks HoQ menjadi pertimbangan dalam mendesain alat pengering kopra. Dari hasil uji coba alat diperoleh suhu 75oC dengan lama waktu pengeringan selama 3 jam
Rancang Bangun Alat Vertical Pressure Filter Berbasis Hidrolik untuk Proses Pemisahan Padatan Cairan Hasil Ekstraksi Bijih Nikel Asnawi, Isran; Perdana, Eriek Aristya; WIJAYANTO, HENDI LILIH; Afandy, Moh; Fathurrasuli, Fathurrasuli; Rianto, Muh Ikbal; Heaven, Rama Yasalam Alquran
JURNAL CRANKSHAFT Vol 8, No 2 (2025): Jurnal Crankshaft Vol. 8 No. 2 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v8i2.15018

Abstract

Permintaan terhadap bahan baku nikel terus meningkat seiring dengan pertumbuhan industri manufaktur, elektronik, dan baterai. Proses ekstraksi bijih nikel laterit melalui jalur hidrometalurgi, khususnya metode atmospheric leaching (AL), menghasilkan campuran padat-cair yang perlu dipisahkan melalui tahapan filtrasi. Filtrasi yang efisien dibutuhkan untuk memisahkan residu padatan dan filtrat dengan waktu proses yang singkat dan konsumsi energi minimal. Keterbatasan dari alat filtrasi konvensional seperti plate frame filter press mendorong perlunya inovasi dalam perancangan alat filtrasi yang lebih hemat energi dan mudah dioperasikan. Penelitian ini bertujuan untuk merancang dan membangun alat vertical pressure filter berbasis pompa hidrolik dengan kapasitas 600 mL yang digunakan untuk menyaring hasil ekstraksi bijih nikel laterit. Evaluasi performa alat dilakukan melalui pengujian efisiensi pemisahan padat-cair menggunakan pelarut asam sitrat. Metode yang digunakan mencakup tahap perancangan alat menggunakan perangkat lunak CAD, fabrikasi menggunakan material akrilik, besi holo, dan filter cloth 450 mesh, serta uji coba alat terhadap parameter efisiensi filtrat dan residu. Alat yang telah dibuat memiliki spesifikasi kapasitas 600 ml, pompa dengan motor hidrolik DC 12 V, pelat saringan nylon 450 mesh, gaya dorong 1000 N, dan waktu filtrasi 30 – 180 s. Dengan spesifikasi alat tersebut, hasil pengujian menunjukkan bahwa nilai efisiensi filtrat sebesar 3,76% dan efisiensi residu sebesar 76%. Ini mengindikasikan alat mampu menahan padatan dengan baik, namun filtrasi cairan belum optimal. Oleh karena itu, alat perlu disempurnakan, antara lain melalui peningkatan tekanan, pemilihan media filter yang lebih sesuai, dan optimasi waktu filtrasi untuk meningkatkan kinerja alat secara menyeluruh.
Temperature Monitoring System for 3 Phase Electric Arc Furnace (EAF) Transformer Cooling Afandy, Moh; Mubarak, Abdul Haris; Rianto, Muhammad Ikbal
Jambura Journal of Electrical and Electronics Engineering Vol 6, No 2 (2024): Juli - Desember 2024
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v6i2.24570

Abstract

 The Electric Arc Furnace (EAF) transformer is a key component in the steel melting system using a furnace. The transformer functions to convert the electrical voltage from the main electrical network into the electrical voltage needed to form an electric arc in the melting furnace. In this research, the EAF transformer configuration uses a delta-wye configuration with a furnace melting capacity of 10 kg nickel ore. In its working system, this transformer will produce a very high current when the melting system is running. So this process will produce excessive heat on the EAF transformer side. As a result of the significant heat generated in the melting process, this transformer is equipped with a cooling system in the form of transformer oil which is a heat release medium and maintains the correct operating temperature. An appropriate temperature monitoring system will increase the work efficiency of the transformer and prevent excessive damage to the system. The sensor used in the design is the RTD PT 100 sensor which is installed at 7 measurement points. The main controller for data collecting and data processing used is a Siemens PLC. Data that has been processed on the main control device is transmitted to the IoT cloud server using a V-box device. As a human machine interface (HMI) web SCADA is used to read data in real time. From the results of the tests that have been carried out, the highest error presentation value obtained in measurements on the T phase is 0.05%. Meanwhile, when measuring the transformer oil sensor, an error value of 0% was obtained.
The Influence of Situational Leadership and Organizational Culture Moderated by Compensation on Employee Performance Afandy, Moh; Setiawan, Margono; Hapsari, Raditha Dwi Vata
Interdisciplinary Social Studies Vol. 1 No. 9 (2022): Special Issue
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/iss.v1i9.233

Abstract

The development of the retail business is quite rapid and followed by very fierce competition , causing PT Midi Utama Indonesia Tbk. Palu Branch needs to maintain a competitive advantage to remain competitive with other companies. Employees become one of the important resources to maintain a competitive advantage. Therefore, improving employee performance is required at all times, where changes occur so quickly and are difficult to predict. This study aimed at analyzing the influence of  situational leadership and organizational culture moderated by compensation on  employee performance. Respondents in this study were 108 office employees using the saturated sample technique (Census) in determining the sample. The data collection method uses a questionnaire and is analyzed using SEM-PLS. The results of this study show that situational leadership has an insignificant positive direct influence on employee performance. Likewise, the effect of a positive interaction is insignificant between compensation and situational leadership on employee performance. Meanwhile, organizational culture has a positive and significant effect directly on employee performance. The effect of the interaction of compensation and organizational culture proved to be positive and significant in influencing employee performance. The company is expected to maintain a clan culture that prioritizes teamwork and collaborativeity. Furthermore, the application of more flexible leadership according to the conditions and situations faced by the company needs to be optimized. In the end, the provision of indirect financial compensation needs to be improved so that it can strengthen the improvement of employee performance.
Co-Authors Asnawi, Isran Fathurrasuli, Fathurrasuli Heaven, Rama Yasalam Alquran Hendi Lilih Wijayanto Kadriadi, Kadriadi Margono Setiawan Mubarak, Abdul Haris Mubarok, Abdul Haris Muhammad Alfian, Muhammad Perdana, Eriek Aristya Raditha Dwi Vata Hapsari Rianto, Muh Ikbal Rianto, Muhammad Ikbal Wirakusuma, Kadex Widhy