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All Journal Prosiding Seminar Nasional Hasil Penelitian Sains, Teknik dan Aplikasi Industri Fakultas Teknik Universitas Lampung Journal of Automotive and Mechanical Applied Technology
Muhammad Syahrul Akmal
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Perancangan bodi kapal patroli lepas pantai: analisis numerik hidrodinamika bodi deep v-hull, bulbous hull, dan catamaran melalui simulasi software maxsurf Yosef Budiman; Formuji Romansyah; Mukhamad Nur Rochim; Muhammad Syahrul Akmal; Moch Solikin; Aan Yudianto
Prosiding Seminar Nasional Ilmu Teknik Dan Aplikasi Industri Fakultas Teknik Universitas Lampung Vol. 5 (2022): SINTA
Publisher : Fakultas Teknik Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (218.13 KB) | DOI: 10.23960/prosidingsinta.v5i.72

Abstract

Kapal Republik Indonesia (KRI) merupakan kapal perang milik Angkatan Laut RI yang digunakan untuk melindungi kedaulatan NKRI dari aksi liar kapal asing yang memasuki wilayah perairan Indonesia tanpa izin. Dalam kasusnya, seringkali terjadi kegagalan dalam penangkapan kapal asing yang disebabkan oleh kurangnya teknologi serta bodi kapal yang kurang optimum dalam beroperasi. Adanya hal tersebut diperlukan analisis mendalam mengenai pemilihan jenis lambung kapal yang paling baik dalam performa dan manouver. Analisis dilakukan secara numeris menggunakan bantuan software Maxsurf. Secara umum, tahapan analisis dilakukan mulai dari studi literatur, penentuan batas pengujian, desain model lambung kapal, simulasi numerik, pengumpulan data, analisis hasil simulasi, hingga pembuatan laporan. Simulasi numerik dilakukan memperhatikan parameter resistansi, stabilitas, serta seakeeping. Hasil yang didapatkan, model lambung kapal jenis katamaran memiliki optimasi yang lebih baik dibandingkan model lambung kapal lainnya. Dibuktikan dengan nilai resistansi holtrop sebesar 170,5 kN pada kecepatan 20 knot, nilai stabilitas yang paling unggul pada kriteria 3.1.2.1: Area 0 to 30, 3.1.2.1: Area 0 to 40, serta 3.1.2.4: Initial GMt berdasarkan standar IMO, serta seakeeping pada pengujian MSI yang baik dengan adanya garis Remote location1 yang tidak bersinggungan dengan garis Severe discomfort boundary for 8 hours, sehingga dapat menambah kenyamanan penumpang kapal selama berlayar dengan waktu yang sangat panjang.
Optimization of Production Process Activities in an Effort to Increase the Production Capacity of BZ 020 Cover Housing Muhammad Syahrul Akmal; Orlanda Arya Hidayat; Moch Solikin
Journal of Automotive and Mechanical Applied Technology Vol. 2 No. 2 (2025): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamat.v2i2.2464

Abstract

The objectives of this study are: (1) To optimize the production process activities of Cover Housing BZ 020 production by implementing an 8-step improvement to increase production capacity. (2) To determine the comparison of the production capacity value of Cover Housing BZ 020 before and after the improvement. (3) To determine the activities that can be optimized to increase the production capacity of Cover Housing BZ 020 production. The method used in this research is the 8-step improvement research method approach. The data collection techniques used are (1) Observation and (2) Documentation. Meanwhile, the research instruments used are (1) Logbook, (2) Observation Sheet, and (3) Cellphone. The data analysis used is descriptive, comparing production capacity and operator activities. The results of this study indicate that: (1) Implementation of the 8-step improvement can be done at PT. Gemala Kempa Daya and is in accordance with the applicable standard SOP. (2) The results obtained after the improvement of production capacity are from 360 units/hour to 468 units/hour, or an increase of 30%. As a result of this improvement, the company also recorded a profit of IDR 55,800,000.00 per year. (3) By adding an extension conveyor, it can shorten the duration of two of the four operator work activities. The decrease in cycle time from 10 seconds to 8 seconds is due to optimizing work activities.
Co-Authors Aan Yudianto Formuji Romansyah Moch. Solikin, Moch. Mukhamad Nur Rochim Orlanda Arya Hidayat Yosef Budiman