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Nurman Pamungkas
Politeknik Negeri Batam
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Journal : JURNAL INTEGRASI

 1 
ALTERNATIF PENGGANTI PASTA ALUMINA SEBAGAI BAHAN POLISHER UNTUK METALOGRAFI Ari Wibowo; Hanifah Widiastuti; Nurman Pamungkas; Cahyo Budi Nugroho
JURNAL INTEGRASI Vol 12 No 2 (2020): Jurnal Integrasi - Oktober 2020
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/ji.v12i2.2022

Abstract

Polishing have played an important role in the preparation of metallography testing. Poor polishing produce in an unflat and rough surface of the material, resulting an unclear metallography image that is difficult to identified. In general, the material commonly used for polishing is alumina paste. Alumina paste is expensive and takes a few minutes to produce a smooth and flat surface. In this research, polishing was done by using several metal polisher other than alumina paste, these were magic***, auto***, bras**, ki*, menze*** and pri** which are sold cheaply at supermarkets or online stores. Analysis was carried out on the surface of the polishing by these materials and the etching surface. The test results showed that the material that is polished with magic *** has the smoothest surface or has the least residual scratches compared to other materials even compared to alumina paste, but has the disadvantage of corrosion forming on some parts of the surface. The best polishing time was obtained on polishing for 3 minutes
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 Pembuatan Procedure Qualification Record untuk Repair through Thickness pada S355 KT0 Stefani, Windy; Leksonowati, Nur Fitria Pujo; Pamungkas, Nurman; Nugroho, Cahyo Budi
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.v16i2.8530

Abstract

This research aims to develop a Procedure Qualification Record (PQR) for Repair Through Thickness on S355 KT0 material using the GTAW method for the root, SAW for filler and capping. The welds were repaired using gouging and grinding before undergoing repair welding with the SMAW method. The study employed experimental methods with Non-Destructive and Destructive tests following AWS D1.1 and Client Specification MHK-COMP-SPE standards. The test results indicate defect-free welds that meet AWS D1.1 standards in terms of mechanical properties such as tensile strength, bending, impact, and hardness. The tensile strength values reached 609 MPa (longitudinal specimen) and 539 MPa and 540 MPa for transverse specimens. The lowest impact test value was 139J in the fusion line +2 mm repair to original welds area. The peak hardness test value was 240 VHN in the HAZ (repair to original weld) region. The test results were also used to formulate a PQR that aligns with specific requirements. This research is expected to provide guidance for performing repair welding on S355 KT0 material.
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 Abda Abda Abulija Maskarai Adhe Aryswan Adi Syahputra Purba Adimas, Adimas Agung Saputra Ali, Sulaiman Ari Wibowo Ari Wibowo Ari Wibowo Arif, Zainal Asrafi Asrafi Aulia Fajrin Baharudin, Budi Batubara, Ninda Batubara, Ninda Hardina Budi Baharudin Budiman Budiman Butar, Hendra Butar Cahyo Budi Nugroho Danang Cahyagi Dimas Prasetyo Domi Kamsyah Dupan, Pandi Dzulfikar, Mohamad Alif Fajrin, Aulia Fedia Restu Fyona, Annisa Gianluca Fenta, Sandro Giat Juangsa Putra, Lalu Hanifah Widiastuti Hendra Saputra Hendra Saputra Hendra Saputra Hendra Saputra Husen Ihsan Saputra Irawan, Benny Haddli Ita Wijayanti James Siregar Jayawarsa, A.A. Ketut Juangsa Putra, Lalu Giat Khollilurrahman, Kholillurrahman Leksonowati, Nur Fitria Leo Van Gunawan Lisa Novianty Manurung, Meilani Manurung, Meilani Mandalena Mega Gemala Meida Perwira Antartika Meilani Mandhalena Manurung Mohamad Alif Dzulfiqar Mufariz, Mufti Fathonah Mufti Fathonah M Mufti Fathonah Muvariz Mufti Fathonah Muvariz Mufti Fathonah Muvariz Muhammad Ismail Mutiarani Mutiarani MUTIARANI MUTIARANI Muvariz, Mufti Fathonah Naufal A Prasetyo Naufal Abdurrahman Naufal Abdurrahman Prasetyo Nidia Yuniarsih Nidia Yuninarsih Nugroho Pratomo Ariyanto Nur Fitria Pujo Leksonowati Nurul Fadhilah Nurul Laili Arifin Nurul Ulfah Nurul Ulfah Pujo, Nur Fitri Purba, Adi Rahman Hakim Restu, Fedia Reynaldi, Muhammad Ryan Rosbandrio, Wowo Roza Puspita Saiful Akhyar Lubis Salman Al Faris Sapto Wiratno Satoto Siregar, James Sriyanto Sriyanto Suheri Suheri Sulistyo Wibowo Surawan, Surawan Syafii, Muhamad Widodo Widodo Widodo Widodo Widodo, Syamsul Bahri Windy Stefani Yogantara Yogantara