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All Journal Jurnal Teknoin Jurnal Teknik ITS IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Rekayasa Mesin Journal of Innovation and Applied Technology Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan Specta Journal of Technology International Journal of Industrial Research and Applied Engineering Jurnal Abdi: Media Pengabdian Kepada Masyarakat Jurnal Kedaymas Prosiding Seminar Nasional Program Pengabdian Masyarakat Penamas: Journal of Community Service PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Journal of Materials Exploration and Findings (JMEF) Makara Journal of Technology Tintamas: Jurnal Pengabdian Indonesia Emas
Sulistijono Sulistijono
Departemen Teknik Material Dan Metalurgi, Institut Teknologi Sepuluh Nopember
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ANALISIS PENGARUH VARIASI HOLDING TIME ANNEALING TERHADAP LAJU KOROSI TITANIUM PADA LARUTAN CAIRAN TUBUH SINTETIS Rohmannudin, Tubagus Noor; Noerochim, Lukman; Sulistijono, Sulistijono; Luthfiansyah, Candra Rizki; Tanjung, Rifqi Aulia
Jurnal Rekayasa Mesin Vol. 14 No. 3 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i3.1654

Abstract

Biomaterials are crucial for bone implants due to their biocompatible and inert nature, ensuring no adverse effects within the human body. Titanium is renowned for its exceptional corrosion resistance. This research aims to analyze the impact of annealing holding time and pH of synthetic body fluid on the hardness and corrosion rate of titanium. The annealing process was performed at 700°C, with holding times of 30, 60, and 90 minutes. As an electrolyte medium, a Hanks' solution with pH variations of 4, 6, and 8 was used and maintained at 37°C. Potentiodynamic corrosion testing demonstrated the lowest corrosion rate in specimens treated with 30 minutes of annealing at pH 8, measuring 0.32 x 10-2 mmpy. The 30-minute annealing exhibited the lowest corrosion rate, which was confirmed by Electrochemical Impedance Spectroscopy (EIS) results showing a higher Rp value, indicating a lower corrosion rate. This is attributed to the presence of a passive Rutile TiO2 layer formed during the annealing process, as confirmed by X-ray Diffraction (XRD) analysis. Metallography observations indicated that the microstructure of untreated specimens consisted of α and β phases. Scanning Electron Microscopy (SEM) analysis of specimens annealed for 30 minutes revealed an oxide layer on the surface without any visible pores. However, an increase in annealing holding time led to the formation of pores, particularly noticeable after 90 minutes of annealing. The presence of pores in the oxide layer resulted in an increased corrosion rate with longer annealing holding times. Conversely, hardness testing demonstrated that longer annealing holding times resulted in higher hardness values.
Pelayanan Pengujian Polyurethane Di Laboratorium Korosi dan Baterai Material Departemen Teknik Material dan Metalurgi FTIRS-ITS Rohmannudin, Tubagus Noor; Sulistijono, Sulistijono; Amrulloh, M. Farian; Fachri, Muhammad
Jurnal KeDayMas: Kemitraan dan Pemberdayaan Masyarakat Vol. 4 No. 2 (2024): Juli 2024
Publisher : Research Center and Community Services (PPPM) Universitas Hayam Wuruk "Perbanas" Surabaya

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Abstract

Polyurethane is a versatile polymeric material widely used as a substitute for rubber, metal, wood, and plastic due to its flexibility and multifunctional properties. To ensure the quality and reliability of polyurethane produced by the industry, the Corrosion and Battery Laboratory of the Department of Materials and Metallurgical Engineering at FTIRS-ITS conducted comprehensive testing. The tests included compression, shear, density, closed cell content (porosity), and thermal conductivity evaluations. The results showed that the polyurethane tested performed satisfactorily, exceeding the standard in several parameters. Compression testing yielded 2.46 kg/cm² compared to the standard of 2 kg/cm². Shear testing showed 6.63 kg/cm² against the standard of 4 kg/cm². Density testing recorded 49 kg/m³ with a standard of 45 kg/m³. The closed cell content test indicated 91.01% versus the standard of 90%. However, thermal conductivity testing showed 0.2 W/mK at 25°C, differing from the standard of 0.02 W/mK at 20°C. Overall, these results suggest that the tested polyurethane meets and exceeds most quality standards, demonstrating its reliability for various industrial applications. Through these tests, the Materials Chemistry Laboratory contributes to ensuring locally produced industrial products are competitive and reliable, as part of its community service efforts.
Pelayanan pengujian kekuatan pipa HDPE di Laboratorium Kimia Material Departemen Teknik Material dan Metalurgi FTIRS-ITS Rohmannudin, Tubagus Noor; Sulistijono, Sulistijono; Amrulloh, M. Farian; Nafi’, Dian; Fachri, Muhammad
Penamas: Journal of Community Service Vol. 4 No. 1 (2024): Penamas: Journal of Community Service
Publisher : Nur Science Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53088/penamas.v4i1.869

Abstract

HDPE pipes are widely used in various industries, such as drinking water and sewage infrastructure, petroleum, agriculture, and construction. The advantages of HDPE pipes include corrosion resistance, light weight, easy installation, and low maintenance costs. Checking the quality of HDPE pipes, spesifically from industry that we tested, is important to ensure infrastructure safety, prevent system failure, improve operational efficiency, obtain user satisfaction, and conserve resources. We evaluated HDPE pipes with type PN 12.5 SDR 13.6 from industry in terms of resistance to hydrostatic pressure, tensile strength, and expansion capability. The evaluation was carried out at the Material Chemistry Laboratory of the Department of Material Engineering and Metallurgy FTIRS-ITS ITS in accordance with the standards of SNI 4829.2: 2015, ASTM D 638 M, and SNI 2553: 1999. The results show that HDPE pipes can withstand hydrostatic pressure up to 12 bar without leakage. The average tensile strength is 43.34 MPa with an average elongation of 354%, indicating ductile pipe properties with necking. Pipe expansion was observed to be 0.195%, indicating a good ability of the pipe to undergo expansion.
Pendampingan pembuatan alat pengering ikan untuk nelayan di Kawasan Pantai Gresik Rohmannudin, Tubagus Noor; Sulistijono, Sulistijono; Satrianugraha, Rifqi Fernady
Tintamas: Jurnal Pengabdian Indonesia Emas Vol. 2 No. 2 (2025): Tintamas: Jurnal Pengabdian Indonesia Emas
Publisher : Nur Science Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53088/tintamas.v2i2.2167

Abstract

The objective of this community engagement activity is to support the improvement of the economic well-being of coastal fishermen in the Gresik area. This initiative is based on the need to preserve fish by reducing its moisture content, thereby inhibiting the growth and proliferation of bacteria (microorganisms) and extending the shelf life of the fish. One of the most common preservation methods is drying. Traditionally, fish drying is conducted using direct solar exposure. However, this method is unhygienic, as the fish is exposed to contamination from insects, birds, and other animals. Additionally, it is prone to dust and cannot be carried out during rainy conditions, which delays the drying process and affects productivity. These challenges have led to the idea of designing and developing a fish drying device using an indirect active solar drying method. Therefore, the Corrosion and Battery Laboratory of the Department of Materials and Metallurgical Engineering, Faculty of Industrial Technology and Systems Engineering (DTMM FTIRS – ITS), took the initiative to carry out a community service program focused on the development of a fish drying device through a participatory-collaborative mentoring approach with fishermen in the coastal area of Gresik. As a result of this program, a functional fish drying device was produced, and the local fishermen are now able to utilize it effectively.
Co-Authors Achly, Fariza Hafizh Adiyaksa, Muhammad Adrinanda, Noval Agung Budi Kurniawan Agung Purniawan Amrulloh, M. Farian Andiana, Rocky Andini, Risa Areliano, Samuel Ashari, Rahmat Asih, Wentika Putri Kusuma Awali, Jatmoko Azmi Mahiri Bintang Ayu Nuraeni Chusururi, Mochamad Alvan Mifta Devy Setiorini Sa’adiyah Dharma, Faridz Wira Diah Susanti Diego Pramanta Harvianto Fakhreza Abdul Faris Hizrian Maulana Faris Putra Ardiansyah Faris Putra Ardiansyah H Purwaningsih Handis Zuniandra Haniffudin Nurdiansyah Haniffudin Nurdiansyah Haniffudin Nurdiansyah Hariyati P Hariyati Purwaningsih Irbabulluba Ismail, Ika J.A. Hakim Jatmoko, Awali Jayawarsa, A.A. Ketut Jr., Teodoro A. Amatosa, Kikin Hermanto L. Noerochim Laisa, Muhammad Ikbal Laksono, Andromeda Dwi Lukman Noerochim Luthfiansyah, Candra Rizki M Rizal Pambudi M. Rizal Pambudi Mas Irfan Purbawanto Hidayat Mavindra Ramadhani Mega Ulimaz Menasita Mayantasari Menasita Menasita Mirnawati Mirnawati Moamar Al Qathafi Moh. Farid Muhammad Fachri Nafi’, Dian Naufal Gati Furqon Pambudi, M Rizal R. Fajarain Rahmah, Linta Atina Ridhotullah, Aji Rinda, Sari Shaimah Rizky, Yoel Rohmannudin, Tubagus N Rohmannudin, Tubagus Noor Satrianugraha, Rifqi Fernady Sidiq, Firman Sitorus, Hilda Pebrianti Octaviana Tanjung, Rifqi Aulia Trendy Leo Pratama Tubagus N Rohmannudin Tubagus Noor R Tubagus Noor Rohmannudin, Tubagus Noor Tubagus Noor Rohmanuddin Vania Mitha Pratiwi Yunita Triana, Yunita Zaid Sulaiman Zaid Sulaiman