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All Journal Journal of Engineering and Management in Industrial System POROS TEKNIK Pendas : Jurnah Ilmiah Pendidikan Dasar Majamecha Jurnal Pendidikan Teknik Mesin Undiksha Eksergi: Jurnal Teknik Energi Jurnal Pengabdian Masyarakat Bangsa GEMBIRA (Pengabdian Kepada Masyarakat) PEDAMAS (Pengabdian Kepada Masyarakat)
Astuti, Fina Andika Frida
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ANALISIS KINERJA TURBIN ANGIN DARRIEUS-H NACA 3412 DENGAN VARIASI JUMLAH BILAH DAN DIAMETER SUMBU PUTAR Astuti, Fina Andika Frida; Fachrudin, Arif Rochman; Su'udy, Ahmad Hamim
Eksergi Vol. 17 No. 1 (2021): JANUARI 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1069.932 KB) | DOI: 10.32497/eksergi.v17i1.2179

Abstract

Wind energy is a renewable energy source that can be utilized by utilizing wind turbines which can convert wind energy into a form of mechanical energy and with a generator electrical energy can be generated. The purpose of this study was to analyze the performance of the Darrieus-H naca 3412 vertical axis wind turbine with variations in the number of blades, wind speed and diameter of the rotary axis. The method used in this research is to use an experimental method, namely by varying the diameter of the rotating axis, the number of blades and wind speed. The number of blades varied were 2, 3 and 4. The wind speeds that were varied were 3.2 m / s, 3.6 m / s, 4 m / s and 4.4 m / s. The diameter of the rotary axis used is 150 mm, 200 mm, 250 mm, 300mm and 350 mm. From the research, it is found that in all values of the diameter of the vertical axis wind turbine at a speed of 4 m / s, the more the number of blades will increase the output power of the wind turbine. The largest output power is on blade 4 with the largest diameter of the rotary axis, which is 3.52 WattsFor all wind speed values on a wind turbine with a number of blades of 4, the larger the diameter of the rotary axis will cause the greater the output power generated. The largest output power is 3.52, which is at the highest wind speed of 4 m / s, the largest diameter of the rotary axis, which is 350 mm. The greater the wind speed of all rotating axis diameters, the greater the output power produced, which is 3.5 W on the diameter of the rotary axis 4 with a wind speed of 4 m/s
PELATIHAN PEMBUATAN KERAJINAN TANGAN DARI BAHAN RESIN UNTUK MEMBUKA PELUANG USAHA PADA WARGA DESA ORO-ORO OMBO RT. 02/RW. 04 KECAMATAN BATU Astuti, Fina Andika Frida; Fachrudin, Arif Rochman; Martawati, Mira Esculenta
Jurnal Gembira: Pengabdian Kepada Masyarakat Vol 3 No 06 (2025): DESEMBER 2025
Publisher : Media Inovasi Pendidikan dan Publikasi

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Abstract

Pengabdian kepada masyarakat ini dilakukan pada Warga RT. 2/RW. 4 Desa Oro-Ombo Kecamatan Batu Kota Batu. Permasalahan yang dialami oleh warga kurangnya kegiatan pelatihan untuk membuka peluang berwirausaha. Selain untuk membuka peluang membuka usaha dengan berbagai kegiatan pelatihan maka para pemuda memiliki banyak keterampilan untuk digunakan membantu masyarakat sekitar yang membutuhkan. Prioritas solusi yang akan dipecahkan untuk menyelesaikan permasalahan Warga RT. 2/RW. 4 Desa Oro-Ombo yaitu melalui beberapa kegiatan, antara lain pelatihan pembuatan kerajinan tangan berupa gantungan kunci dari bahan resin. Program Pengabdian kepada Masyarakat ini mempunyai tujuan untuk meningkatkan kemampuan dan ketrampilan dalam pembuatan gantungan kunci sehingga dapat meningkatkan keterampilan berwirausaha bagi Warga RT. 2/RW. 4 Desa Oro-Ombo. Pelatihan yang diberikan meliputi pengetahuan dan ketrampilan tentang keselamatan pada pembuatan gantungan kunci, dasar teori bahan resin, praktek pembuatan gantungan kunci dari bahan resin. Metode pelaksanaan dalam pengabdian ini adalah dengan memberikan pelatihan secara teori dan praktek secara langsung pembuatan gantungan kunci. Harapan kegiatan ini adalah meningkatnya ketrampilan berwirausaha dengan meningkatnya ketrampilan dalam pembuatan produk dari resin.
PENGEMBANGAN KETERAMPILAN DAN KOMPETENSI PEMUDA KARANG TARUNA MELALUI PELATIHAN PENGECATAN KERAJINAN TANGAN Fachrudin, Arif Rochman; Astuti, Fina Andika Frida; Firdaus, Ahmad Hanif; Martawati, Mira Esculenta
Jurnal Gembira: Pengabdian Kepada Masyarakat Vol 3 No 06 (2025): DESEMBER 2025
Publisher : Media Inovasi Pendidikan dan Publikasi

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Abstract

Kegiatan pengabdian masyarakat ini bertujuan untuk memberikan pelatihan keterampilan pengecatan menggunakan spray gun kepada anggota remaja karang taruna. Pelatihan ini dirancang untuk meningkatkan keterampilan peserta dalam bidang pengecatan untuk membuka peluang usaha baru di bidang kerajinan tangan. Metode yang digunakan meliputi pemberian materi teori dasar pengecatan, praktik langsung, diskusi, serta evaluasi dan umpan balik terhadap hasil kerja peserta. Hasil pelatihan menunjukkan bahwa peserta berhasil menguasai teknik dasar penggunaan spray gun pada produk kerajinan tangan. Secara keseluruhan kegiatan pelatihan ini berhasil meningkatkan keterampilan peserta dan memberikan peluang ekonomi baru. Evaluasi yang dilakukan menunjukkan adanya peningkatan signifikan dalam kualitas hasil pengecatan dan kepercayaan diri peserta untuk membuka usaha berbasis keterampilan tersebut. Pelatihan ini diharapkan dapat terus dilanjutkan dengan program lanjutan untuk memperdalam keterampilan dan memperluas manfaatnya bagi masyarakat setempat.
PENGARUH FRAKSI VOLUME DAN ARAH SERAT RAMI TERHADAP KEKUATAN IMPAK MATERIAL KOMPOSIT UNTUK APLIKASI BUMPER Astuti, Fina Andika Frida; Arif Rochman Fachrudin; Mira Esculenta Martawati
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 04 (2025): Volume 10 No. 04 Desember 2025 Press
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i04.36488

Abstract

The rapid growth of the automotive industry demands ongoing innovation in material engineering to improve vehicle performance and safety. The bumper, as a key structural component, must provide collision protection while supporting fuel efficiency and reducing environmental impact. A major challenge is producing bumpers that are both strong and lightweight, prompting exploration of composite materials. Among natural fibers suitable for composite reinforcement, ramie fiber is a promising candidate. Ramie fiber offers several advantages, including high mechanical strength and relatively low density. The objective of this study is to develop a composite material with high impact strength as an alternative bumper material. An experimental research method was employed, with composite fabrication carried out using the hand lay-up technique. The variables in this study included fiber orientation vertical, horizontal, and random. Volume fraction with variations of 30% fiber and 70% matrix; 45% fiber and 55% matrix; and 60% fiber and 40% matrix. The results indicate that both fiber orientation and volume fraction significantly affect impact strength. The lowest impact strength was observed in specimens with horizontal fiber orientation and a 30% fiber volume fraction, yielding 0.00719 J/mm². The highest impact strength was obtained from specimens with vertical fiber orientation and a 60% fiber volume fraction, reaching 0.05578 J/mm². Based on these findings, ramie fiber composites meeting the minimum impact strength standard for Toyota bumpers are those with a 60% fiber and 40% matrix composition, particularly with random or vertical fiber orientations.
STRATEGIES OF MAINTENANCE MODEL FOR EXERCISE BOOK MANUFACTURING MACHINE ON PAPER INDUSTRY BY IMPLEMENTING MONTE CARLO SIMULATION APPROACH Astuti, Fina Andika Frida; Sugiono, Sugiono; Choiron, Moch Agus
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 5 No. 1 (2017)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2017.005.01.1

Abstract

PT. XYZ is one of many paper manufacturing companies in East Java which produces Exercise Book. The company implements corrective engine maintenance system where new components replacement is done when the engine is damaged. This treatment system resulted in frequent engine sudden stopping. With so many breakdown frequencies resulting from the fact that the engine stops abruptly, the broken raw materials increases in number and causes losses for the company. To overcome that problem we need appropriate treatment strategies to minimize the frequency of breakdown. Another aim is to minimize downtime and maintenance costs incurred because of engine maintenance activity. There are 3 maintenance scenarios implemented to solve such problem, i.e. scenario based on the existing condition of the company, scenario of component replacement in accordance with Mean Time to Failure (MTTF) value, and scenario of component replacement when the reliability of the component has reached 70%. From those three scenarios we will manually carry out an interval maintenance planning and Monte Carlo simulation. The result of data processing shows that in order to minimize the number of Exercise Book engine breakdown we can apply the 3rd scenario namely the replacement of component when the reliability of component has reached 70%. To minimize the amount of downtime and maintenance costs appropriately we shall use scenario 2, namely the replacement of component based on the Mean Time To Failure (MTTF) value.  
USULAN PERAWATAN AREA CUTTING UNIT MESIN TUBER T-645M KAPASITAS 5000 KANTONG/HARI DENGAN PENDEKATAN FMEA Astuti, Fina Andika Frida; Arif Rochman Fachrudin
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 02 (2026): Volume 11 No. 02 Juni 2026 Press
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i02.57781

Abstract

The Tuber T-645M machine is utilized in the production of cement bags made from kraft paper (pasted bags), converting paper rolls into semi-finished tubular forms (tubes). The Tuber machine consists of several operational sections, one of which is the Cutting Unit area. The Cutting Unit is responsible for cutting the continuously formed tubes produced by the Tube Forming Unit into predetermined lengths. Currently, the Cutting Unit does not have a scheduled component replacement program; therefore, components are replaced only after failure occurs. This condition leads to excessive machine downtime and disrupts the production process. This study aims to identify critical components and propose an appropriate maintenance strategy for the Tuber machine. The research employs the Failure Mode and Effects Analysis (FMEA) method to evaluate potential failure modes and their impacts. Based on the Risk Priority Number (RPN) analysis, four critical components were identified as the primary contributors to machine downtime, namely the differential gear, bearing, tear-off mechanism, and cam roller. The proposed maintenance strategy for the Cutting Unit of the Tuber T-645M machine is preventive maintenance, consisting of 28 scheduled component replacements and 38 maintenance activities to improve machine reliability and reduce downtime.
ANALISIS KEKUATAN IMPAK KOMPOSIT SERAT SISAL DENGAN VARIASI WAKTU PERENDAMAN DAN FRAKSI VOLUME SERAT Astuti, Fina Andika Frida; Arif Rochman Fachrudin; Faradilla Fauziyah
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 02 (2026): Volume 11 No. 02 Juni 2026
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i02.57981

Abstract

Natural fiber-reinforced composites have emerged as promising alternative materials due to their low density, environmental friendliness, and favorable mechanical properties. Sisal fiber (Agave sisalana) is one of the most widely used natural fibers as a composite reinforcement because of its excellent mechanical performance. However, its hydrophilic nature results in poor interfacial bonding with polymer matrices, which adversely affects the mechanical performance of the composite. Alkali treatment using a 5% sodium hydroxide (NaOH) solution can improve the fiber surface characteristics, while the fiber volume fraction plays a significant role in determining load transfer efficiency and the composite's ability to absorb impact energy. This study aims to investigate the effects of sisal fiber soaking time in a 5% NaOH solution (120, 180, and 240 minutes) and fiber volume fractions of 35%, 50%, and 65% on the impact strength of polyester-based composites. The composites were fabricated using the hand lay-up method with a vertical fiber orientation. The results showed that the highest impact strength of 0.22409 J/mm² was obtained for the composite treated with a 240-minute soaking time and a 35% sisal fiber volume fraction with 65% polyester matrix. This improvement in impact strength indicates that the selected combination of immersion time and fiber volume fraction enhanced the interfacial bonding between the fiber and the matrix, thereby improving load transfer efficiency and impact energy absorption.
Co-Authors Ahmad Hamim Su’udy Ahmad Hanif Firdaus Arif Rochman Fachrudin Arif Rochman Fachrudin, Arif Rochman Choiron, Moch Agus Fachrudin, Arif Rochman Fachrudin Faradilla Fauziyah Martawati, Mira Esculenta Mira Esculenta Martawati Monasari, Ratna Nanang Qosim Sugiono Sugiono Wicaksana, Galih