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All Journal JURNAL INTEGRASI Jurnal Teknologi dan Riset Terapan (JATRA) Journal of Engineering and Applied Technology Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam Journal of Applied Mechanical Technology (JAMET)
Batubara, Ninda Hardina
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Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Experimental study: coolant viscosity's impact on Inconel 600's surface roughness measured using a refractometer Pujo Leksonowati, Nur Fitria; Pamungkas, Nurman; Manurung, Meilani Mandalena; Batubara, Ninda Hardina; Widiastuti, Hanifah
Journal of Engineering and Applied Technology Vol. 5 No. 1 (2024): (March)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v5i1.71254

Abstract

This paper presents an experimental study on the impact of coolant viscosity on the surface roughness of Inconel 600 material processed using a lathe. This research employs sequential experimental methods, encompassing a coolant viscosity test, specimen machining with a lathe, and surface roughness test. The standard for the roughness grade number is defined by ISO 1302. The study effectively demonstrates the use of a refractometer as a reliable and practical alternative for determining coolant quality in % Brix units, which strongly correlates with coolant viscosity. The research findings reveal that an increase in coolant viscosity results in a smoother surface roughness of the workpiece, while a decrease leads to an increase in surface roughness. Specifically, the average viscosity of 8%, 10%, and 13% Brix coolant results in an average surface roughness of Ra 11.83 μm, Ra 10.09 μm, and Ra 7.23 μm, respectively. The average roughness grade number based on this study is N9 - N10. However, the study also identifies the need for further mathematical calculations to establish a link between coolant concentration, % Brix, and coolant viscosity. This opens up an intriguing avenue for future research and holds the potential to significantly enhance our understanding of the relationship between these variables.
Studi Keausan Mata Pahat Pada Proses Pembubutan Material ST 37 Manurung, Meilani Mandhalena; Leksonowati, Nur Fitria Pujo; Saputra, Agung; Pamungkas, Nurman; Stefani, Windy; Batubara, Ninda Hardina; Purba, Adi Syahputra; Muvariz, Mufti Fathonah
Jurnal Teknologi dan Riset Terapan (JATRA) Vol. 6 No. 1 (2024): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2024
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v6i1.7418

Abstract

Penelitian ini bertujuan untuk membandingkan tingkat keausan pada tiga jenis pahat insert bubut, yaitu CNMG120408-NM4 WPP20, CNMG432-MS3, dan CNMG 150604r-k 4325, dalam kondisi pemotongan yang identik. Variabel kedalaman potongan dan kecepatan spindle ditetapkan pada 1,0 mm dan 560 rpm, dengan material yang digunakan adalah besi ST 37. Hasil menunjukkan bahwa CNMG 150604r-k 4325 mengalami kehilangan massa paling besar, sedangkan CNMG120408-NM4 WPP20 menunjukkan keausan paling rendah. Faktor-faktor yang mempengaruhi keausan ini meliputi gesekan, temperatur tinggi, kecepatan potong, material yang diproses, dan kondisi pemotongan. Penelitian ini memberikan highlight tentang faktor-faktor yang mempengaruhi keausan pada pahat insert bubut sehingga dapat dijadikan referensi untuk pemilihan pahat yang tepat untuk meningkatkan efisiensi proses permesinan
Studi Kasus Penjadwalan Proyek: Frame Acid Skid dengan Gant Chart dan Critical Path Method Pujo Leksonowati, Nur Fitria; Pamungkas, Nurman; Stefani, Windy; Purba, Adi Syahputra; Manurung, Meilani Mandhalena; Batubara, Ninda Hardina; Gunawan, Leo Van
Journal of Applied Mechanical Technology Vol 3 No 1 (2024): Journal of Applied Mechanical Technology (JAMET)
Publisher : Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/journalofappliedmechanicaltechnology.v3i1.53

Abstract

This study examines the scheduling of the Frame Acid Skid project at the Lombok Steam Power Plant (PLTU) using Gantt Chart and Critical Path Method (CPM). The primary objective is to identify the causes of delays and propose optimization measures for the project duration. Data collected indicates a significant difference between the planned duration (24 days) and the actual project completion time (47 days). The main delays occurred in the welding and painting phases, each requiring an additional 13 days. Contributing factors include the addition of a welding process for materials not covered in the initial contract and specification mismatches in the painting phase. Analysis with Gantt Chart and CPM reveals that enhanced communication, more detailed initial planning, and strict monitoring of project specifications are crucial to minimize the impact of delays on cost and time. The results of this study provide a strong basis for decision-making in similar future projects.
STUDI KOMPARATIF PENGGUNAAN YOKE AC DAN DC UNTUK DETEKSI CACAT SUBSURFACE PADA MATERIAL BERLAPIS CAT Leksonowati, Nur Fitria Pujo; Pamungkas, Nurman; Mufariz, Mufti Fathonah; Purba, Adi Syahputra; Manurung, Meilani Mandhalena; Stefani, Windy; Batubara, Ninda Hardina; Dupan, Pandi
Jurnal Teknologi dan Riset Terapan (JATRA) Vol. 7 No. 1 (2025): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2025
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v7i1.8565

Abstract

Penelitian ini bertujuan untuk mengevaluasi perbandingan efektivitas yoke AC dan yoke DC dalam mendeteksi cacat bawah permukaan (subsurface defect) pada pelat baja karbon A36 yang dilapisi cat dengan ketebalan bervariasi menggunakan metode Magnetic Particle Inspection (MPI). Lima spesimen baja dengan ketebalan lapisan cat 100, 200, 300, 400, dan 500 mikron diuji. Metode visible wet particle diterapkan setelah kalibrasi yoke AC dan DC sesuai standar BS 6072. Hasil penelitian menunjukkan bahwa pada ketebalan cat 100 mikron, yoke AC mendeteksi 93% cacat, sedangkan yoke DC mendeteksi 98%. Seiring dengan meningkatnya ketebalan cat, performa yoke AC menurun drastis, terutama pada ketebalan 500 mikron, di mana yoke AC hanya mampu mendeteksi 38% cacat, sementara yoke DC masih mampu mendeteksi 43%. Dengan demikian, yoke DC lebih efektif dalam mendeteksi cacat bawah permukaan pada spesimen dengan lapisan cat yang lebih tebal dibandingkan yoke AC.
Pelatihan Pendamping Proses Produk Halal Ulfah, Nurul; Widiastuti, Hanifah; Thohari, Ahmad Hamim; Zaenuddin, Muhammad; Fajrin, Aulia; Purba, Adi Syahputra; Batubara, Ninda Hardina; Stefani, Windy; Hidayat, Imam; Wirawan, Adhitomo
Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam Vol. 5 No. 1 (2023): Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/abdimaspolibatam.v5i1.4865

Abstract

Halal products are products that are starting to be looked at by the market today. One of the goals of the Indonesian government, under BPJPH, in 2024 it is hoped that products, especially food and beverages in Indonesia, will already have halal certificates so that they can increase the attractiveness of pariwasata for Muslims around the world if they visit Indonesia. Based on the new legislation in 2014, namely law no. 33 of 2014 concerning Halal Product Guarantee, the halal certification process is carried out in synergy by various parties, one of which is the halal product guarantee organizing body (BPJPH). Halal product process assistance is a process of verifying and validating halal statements by business actors (self-declare). This activity serves to assist micro and small business actors in meeting product halal requirements. The purpose of this community service is to find out the level of understanding of prospective halal product process assistants in Batam City, service activities are carried out with 3 stages, namely surveys, socialization and training activities and the last stage is evaluation and reports. This activity is supported by BPJPH and Bank Indonesia as additional sponsors for activities to be carried out offline and online.
Pemberdayaan Pendidikan Vokasional: Pelatihan Mesin Laser cutting untuk Keterampilan Desain dan Fabrikasi di SMKN 9 Batam Leksonowati, Nur Fitria Pujo; Batubara, Ninda Hardina; Purba, Adi Syahputra; Cahyagi, Danang; Butar, Hendra Butar; Wijayanti, Ita; Manurung, Meilani Mandalena; Dzulfikar, Mohamad Alif; Stefani, Windy; Ulfah, Nurul; Aryswan, Adhe; Pamungkas, Nurman; Khollilurrahman, Kholillurrahman
Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam Vol. 6 No. 2 (2024): Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/abdimaspolibatam.v6i2.7016

Abstract

This community service initiative aims to enhance the skills of vocational school students in utilizing Laser cutting machines, serving as a platform for students in the Design and Visual Communication department of SMKN 9 Batam to fabricate products based on their own designs in preparation for the professional world. The participants involved in this initiative consist of 78 students from the aforementioned department. The community service program is structured through various stages, encompassing initiation, preparation, execution, activity review, and the compilation of a final report. Enthusiastically engaged, the participants, primarily from the Design and Visual Communication department, had previously focused their learning solely on the design phase. However, through this community service project, they actively participated in the fabrication process of designs they had created. Utilizing CAD applications, the designs were transformed into tangible products using acrylic as the raw material, ensuring that the resulting products align with the envisioned design. This initiative provides a valuable avenue for students to bridge the gap between design and fabrication, fostering practical skills crucial for their future endeavors in the workforce.
OPTIMALISASI SUMBER DAYA DAN TEKNOLOGI DALAM PROGRAM PEMBERDAYAAN MASYARAKAT DESA PULAU JEMARE Leksonowati, Nur Fitria Pujo; Pamungkas, Nurman; Butar, Hendra Butar; Aryswan, Adhe; Juangsa Putra, Lalu Giat; Fyona, Annisa; Nugroho, Cahyo Budi; Wibowo, Ari; Gemala, Mega; Ariyanto, Nugroho Pratomo; Arifin, Nurul Laili; Puspita, Roza; Sriyanto, Sriyanto; Dzulfiqar, Mohamad Alif; Stefani, Windy; Batubara, Ninda Hardina; Fajrin, Aulia; Purba, Adi Syahputra; Manurung, Meilani Mandhalena; Budiman, Budiman
Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam Vol. 7 No. 1 (2025): Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/abdimaspolibatam.v7i1.7105

Abstract

This paper discusses in depth the implementation of the Village Community Empowerment Program (P2MD) carried out on Jemare Island. The main focus of this program is the application of appropriate technology, which includes public street lighting and a water pump system, both powered by solar panels. The main objective of this initiative is to improve the quality of lighting and the provision of clean water on the island, two important aspects that are greatly needed by the local residents. Through a series of intensive observations and discussions with the local residents, the community service team was able to identify and solve various problems faced by the residents. As a result of these efforts, four street lights have been successfully installed and operated, and the water pump system has been successfully connected to the water pump machine and water storage tank. It is hoped that this initiative can have a significant positive impact on the quality of life of the residents of Jemare Island, support their business activities and economy, and provide a solution to the uneven distribution of electricity by the state electricity company (PLN). This solution is practical because it utilizes renewable energy in the form of sunlight, which is abundantly available on Jemare Island.
Dampak Jumlah Plasticizer dalam Nilai Kekerasan Plastik PVC Manurung, Meilani Mandhalena; Leksonowati, Nur Fitria Pujo; Pamungkas, Nurman; Stefani, Windy; Batubara, Ninda Hardina; Purba, Adi Syahputra
JURNAL INTEGRASI Vol. 16 No. 2 (2024): Jurnal Integrasi - Oktober 2024
Publisher : Pusat Penelitian dan Pengabdian Masyarakat Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/ji.v16i2.8495

Abstract

This paper provides a detailed investigation into the effects of Trioctyl Trimellitate (TOTM) plasticizer levels on the hardness of Polyvinyl Chloride (PVC) materials. The study reveals an inverse correlation between the level of TOTM plasticizer and the hardness of PVC, with an increase in TOTM levels leading to a decrease in hardness. This trend is consistent across various PVC samples, despite minor variations. The role of plasticizers in determining the physical and mechanical properties of PVC is further explored, emphasizing their function in reducing PVC's crystallinity, thereby producing a clearer and more flexible material. This research contributes to the understanding of how plasticizers can be used to tailor the properties of PVC, leading to the development of two distinct types of PVC: Flexible PVC, which contains a plasticizer, and Rigid PVC, which does not. The findings underscore the importance of plasticizers in material design and engineering, offering valuable insights for future applications.
Studi Pengaruh Nilai Availability Mesin Stamping Terhadap Jumlah Hasil Produksi Purba, Adi Syahputra; Leksonowati, Nur Fitria Pujo; Pamungkas, Nurman; Yuniarsih, Nidia; Batubara, Ninda Hardina; Prasetyo, Dimas
JURNAL INTEGRASI Vol. 16 No. 2 (2024): Jurnal Integrasi - Oktober 2024
Publisher : Pusat Penelitian dan Pengabdian Masyarakat Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/ji.v16i2.8536

Abstract

This study aims to analyze the effect of machine availability on production output at PT XYZ. Data collection was conducted from January to March 2024, focusing on machine downtime, total operational hours, and weekly production output. The method used involves the calculation of Mean Time Between Failure (MTBF), Mean Time To Repair (MTTR), and availability, followed by a correlation analysis between availability and production output. The results show a strong correlation between availability and output, with a correlation value of 0.852. In Week 6 and Week 11, machine downtime caused availability to drop to 98.41% and 97.96%, respectively, which directly impacted production output. Based on these findings, it is recommended that PT XYZ improve preventive maintenance and minimize downtime to maintain optimal machine availability and maximize production output
Co-Authors Adhe Aryswan Agung Saputra Ari Wibowo Ariyanto, Nugroho Pratomo Budiman Budiman Butar, Hendra Butar Cahyagi, Danang Cahyo Budi Nugroho Dimas Prasetyo Dupan, Pandi Dzulfikar, Mohamad Alif Dzulfiqar, Mohamad Alif Fajrin, Aulia Fyona, Annisa Gemala, Mega Imam Hidayat Juangsa Putra, Lalu Giat Khollilurrahman, Kholillurrahman Leksonowati, Nur Fitria Pujo Leo Van Gunawan Manurung, Meilani Mandalena Manurung, Meilani Mandhalena Mufariz, Mufti Fathonah Muhammad Zaenuddin Muvariz, Mufti Fathonah Nidia Yuniarsih Nurul Laili Arifin, Nurul Laili Pamungkas, Nurman Pujo Leksonowati, Nur Fitria Purba, Adi Syahputra Puspita, Roza Sriyanto Sriyanto Stefani, Windy Thohari, Ahmad Hamim Ulfah, Nurul Widiastuti, Hanifah Wijayanti, Ita Wirawan, Adhitomo