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Bistolen, Boy
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Pengaruh Nickel-Chrome Plating Terhadap Kekerasan Mikro, Kekasaran Permukaan Dan Keausan Pada Hasil Produk Pengecoran Aluminium Bekas (Scrap) Rohi, Jemssy Ronald; Bistolen, Boy; Lopo, Elkana B; Pinto, Gaspar M P; Hanmina, Marsianus M F
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v19i02.695

Abstract

In the aluminum casting process, the resulting cast product still has defects that affect the quality of mechanical properties, so it is necessary to perform the final processing by electrolysis with nickel-chromium. The aim of this research is to determine the effect of nickel-chromium coating on the results of used aluminum casting products with electrical voltages of 5, 7.5, 9 volts and times of 5, 10, 15 seconds. From the test results, it is shown that at electrical voltage of 5 and 7.5 volts with time of 5, 10, 15 seconds and at electrical voltage of 9 volts with time of 5 seconds, the hardness value is still in the nickel hardness range, while at electrical voltage of 9 volts with time of 10 and 15 seconds, it is already in the chromium hardness range. When testing the surface roughness, a decrease of 39.36% was observed after 5 seconds, a decrease of 49.70% after 10 seconds and a decrease of 63.90% after 15 seconds. These results show that the roughness level of the nickel-chromium coating is already in the surface roughness range of the finishing or final machining. The highest wear value was at 5 seconds at a voltage of 5 volts, namely 9.86E-07 mm2/kg. The lowest wear value was at 15 seconds at a voltage of 9 volts, namely 2.213E-07 mm2/kg. Therefore, nickel-chromium coating is known to increase the wear resistance of the coated material.
Sosialisasi Dan Penanaman Mangrove Di Pantai Dusun Susuk Kab. Belu Mubaroq, Zakky Al; Manesi, Damianus; Ismail, Abdi; Bistolen, Boy; Tnunay, Imanuel; Lopo, Elkana; Ruhma, Zakka; Rohi, Jemsy R.
Abdi Masyarakat Vol 3, No 2 (2021)
Publisher : Lembaga Penelitian dan Pendidikan (LPP) Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/abdi.v3i2.2778

Abstract

Magrove merupakan salah satu tanaman khas di daerah tropis yang mampu tumbuh didarat dan di laut, serta sangat baik untuk menjaga keseimbangan ekosistem pantai. Saat ini banyak lokasi pantai yang sudah rusak ekosistem mangrovenya, sehingga perlu rehabilitasi mangrove. Peran dan fungsi mangrove bagi lingkungan perlu disoaialisasikan kepada masyarakat sekitar. Kegiatan pengabdian ini ditujukan untuk mensosialisasikan peran dan fungsi mangrove di masyarakat sekitar dusun Susuk Kec. Kakuluk Mesak Kabupaten belu. Metode yang digunakan adalah sosialisasi, diskusi dan demonstrasi. Hasil Pengabdian menunjukkan bahwa masyarakat menjadi peduli dan mengetahui tentang arti pentingnya ekosistem mangrove bagi kehidupan manusia, disamping itu kesadaran dan peran serta tanggung jawab masyarakat sekitar untuk ikut menjaga lingkungan juga ikut meningkat dan terciptanya kerjasama yang baik anatara prodi permesinan kapal dengan masyarakat.
Pelatihan Perbaikan Dan Perawatan Perahu Fiber Nelayan Pospera Kletek Kabupaten Malaka Ansori, Ansori; Manesi, Damianus; Lopo, Elkana; Ruhma, Zakka; Ismail, Abdi; Tnunay, Imanuel; Bistolen, Boy; Rohi, Jemsy R.
Abdi Masyarakat Vol 3, No 2 (2021)
Publisher : Lembaga Penelitian dan Pendidikan (LPP) Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/abdi.v3i2.2780

Abstract

Kelompok Nelayan Desa Kletek, merupakan salah satu kelompok nelayan potensial, karena kelompok mereka merupakan salah satu penyuplai hasil ikan terbesar di kab Malaka provinsi Nusa tenggara timur. Karena keberhasilan tersebut mereka di hibahi beberapa perahu fiberglas dengan tujuan untuk lebih mengotimlkan hasil tangkapan mereka. Namun sayang beberapa perahu trsebut mengalami cacat operasi sehingga dibiarkan begitu saja. Pengabdian ini bertujuan untuk memgoptimlkan kembali fungsi kapal dengan cara melatih nelayan desa keletek untuk memperbaiki dan merawat perahu fiber tersebut. Metode yang digunakan adalah metode sosialisasi dan praktik. Hasil yang diperoleh dari kegiatan pengabdian ini yaitu mampu meningkatkan keterampilan nelayan dalam hal mengidentifikasikan jenis cacat pada bodi perahu fiber, mengenal karakter material dan mampu menggunakan peralatan perbaikan bodi perahu fiber, mampu memetakan area kerja, membuat campuran gelcoat dan melakukan proses perbaikan bodi dengan benar. 
Analisis Uji Tarik Pada Hasil Pengelasan Busur Listrik Menggunakan Elektrroda Berdiameter 2.6 mm Pada Plat St 40 Dengan Ketebalan 4 mm Tnunay, Imanuel Adam; Manesi, Damianus; Hanmina, Marsianus M F; Bistolen, Boy; Lopo, Elkanan Bilak
Propeller Jurnal Permesinan Vol. 1 No. 2 (2023)
Publisher : Universitas Pertahanan RI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33172/pjp.v1i2.14590

Abstract

Pengelasan merupakan proses penyambungan peralatan material benda logam yang digunakan dalm konstruksi bangunan maupun konstruksi peralatan mesin dimana pengunan elektroda las san berpengaruh pad material yg disambungkan. Dengan penerapan pada material Baja St 40 dan elektroda berdiameter Ø 2,6 mm maka dari hasil penelitian ini menunjukan analisa bahwa pnggunaan bahan pengelasan Elektroda Ø 26 mm memiliki kekuatan tarik yang lebih baik (96,7 kg/mm). Tegangan Nominal yang dihasilkan dari hail pengelasan menggunkan elektroda Ø 26 mm adalah sebesar 90,72 kg/mm², Regangan yang dihasilkan apabilai bandingkan dengan pengelasan dasar maka didapat hasil sebesar 0,75 kg/mm², Sedangkan reduksi yang dihasilkan sebesar 6,2 kg/mm². hal ini menunjukan bahwa pengunaan elektroda Ø 26 mm masih menjadi rekomendasi dalam penggunaannya
Pemeriksaan Pengujian Dan Penerapan Keselamatan Dan Kesehatan Kerja Pada Bejana Tekan Pereira Maia Pinto, Gaspar; Lopo, Elkana Bilak; Rohi, Jemssy R; Bistolen, Boy
Propeller Jurnal Permesinan Vol. 2 No. 1 (2024)
Publisher : Universitas Pertahanan RI

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to analyze the methods of inspection, testing, and application of occupational safety and health (OHS) to pressure vessels in industry. occupational safety and health (K3) on pressure vessels in industry. Inspection and testing are closely related to ensuring the structural integrity and operational safety of pressure vessels. Occupational safety and health is a primary focus to prevent workplace accidents and protect employees. Methods This research involved a survey of current inspection and testing inspection and testing practices, as well as analyzing data from incidents of work-related accidents and illnesses. incidents. In addition, the Air Compressor Tank Pressure Vessel Test Inspection was conducted at the PT X location is a periodic test check. Based on Minister of Manpower Regulation No. 37 Year 2016, the periodic test inspection stage consists of work activities, namely Document Inspection, Visual Inspection and NDT Testing. Documents, Visual Examination and NDT Testing, the results showed that Physical/Visual Inspection of the weld area found no weld defects, NDT (Non Destructive Test) Inspection of the weld. NDT (Non Destructive Test) Ultra sonic Wallthickness Testing on the plate was not found. found a difference in thickness (even thickness), Inspection of operating pressure in the weld area - Nozzle weld, Valve no indication of leaking was found. Research This study concludes that the Safety valve and pressure gauge are checked internally and calibrated periodically. internal inspection and periodic calibration, operating pressure should not exceed the permitted pressure. operating pressure should not exceed the allowable pressure of 6 Bar, daily internal checks and maintenance are carried out periodically. periodically., Manual book and Hystory Manual book and Hystory card must always be maintained, When making repairs or replacing damaged components When repairing or replacing damaged components, it must be in accordance with the manufacturer's recommendations. on the Air Receiver Tank unit and document the maintenance activities (Maintenance record must be done internally). maintenance activities (Maintenance records must be carried out internally periodically according to the manufacture), Comply with and implement all safety and health requirements. and occupational health. is fully responsible for the safe operation of the Air Receiver Tank Pressure Vessel. Tank.
Co-Authors Aldri Frinaldi Hanmina, Marsianus M F Ismail, Abdi Lopo, Elkana Lopo, Elkana B Lopo, Elkana Bilak Lopo, Elkanan Bilak Manesi, Damianus Mubaroq, Zakky Al Pereira Maia Pinto, Gaspar Pinto, Gaspar M P Rohi, Jemssy R Rohi, Jemssy Ronald Rohi, Jemsy R. Ruhma, Zakka Tnunay, Imanuel Tnunay, Imanuel Adam