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All Journal PROSIDING SEMINAR NASIONAL Jurnal Energi Dan Manufaktur Rotasi Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Rekayasa Mesin Prosiding Semnastek ROTOR: JURNAL ILMIAH TEKNIK MESIN Semesta Teknika JMPM (Jurnal Material dan Proses Manufaktur) Conference SENATIK STT Adisutjipto Yogyakarta Jurnal Teknik Mesin Indonesia Journal of Engineering and Applied Technology Jurnal Ilmiah Teknik Mesin Poros Proceedings Series on Physical & Formal Sciences Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Journal of Mechanical Design and Testing (JMDT) JURNAL POLI-TEKNOLOGI Makara Journal of Technology Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi)
Priyo Tri Iswanto
Departemen Teknik Mesin Dan Industri, Fakultas Teknik, Universitas Gadjah Mada. Jl. Grafika No. 2, Kompleks UGM, Yogyakarta 55281, Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Transportation

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Analytical and Computational Simulation Approaches to Design Low Energy Glass Block Binarti, Floriberta; Istiadji, Agustinus Djoko; Satwiko, Prasasto; Iswanto, Priyo Tri
Makara Journal of Technology Vol. 15, No. 2
Publisher : UI Scholars Hub

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Abstract

Analytical and Computational Simulation Approaches to Design Low Energy Glass Block. An environmentally friendly process was developed to produce a low embodied energy glass block from waste glasses. The energy efficiency of the glass block is represented by its thermal conductance (U)
Studi komparasi pengaruh penggunaan variasi konsentrasi inhibitor amine oxide terhadap laju korosi pipa baja API 5L grade B di lingkungan fluida drain line Dian Ahmad Sudali; Priyo Tri Iswanto
Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): 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.v17i2.378

Abstract

API 5L Grade B Steel Pipes is one of the most used in pipeline system for oil and gas industry because it has the appropriate strength and characteristics. Nevertheless, API 5L Grade B Steel Pipes potential for corrosion due to working in a corrosive environment. One of the efforts that can be done to prevent corrosion in this piping system is the use of inhibitors. The purpose of this study was to study the effect of using variations in the concentration of amine oxide inhibitors on the corrosion rate of API 5L Grade B steel pipe in the drain line fluid environment. The inhibitors used in this study were organic inhibitors, namely amine oxide with a concentration variation of 0.5% and 0.9%. Corrosion measurement using Potentiodynamic Polarization method. Tests for composition, microstructure, Vickers hardness, and tensile tests were carried out to support the test data. The results showed that the corrosion rate of API 5L Grade steel pipe in a drain line fluid environment without inhibitors was 68.94 mpy. The addition of amine oxide inhibitor was effective in reducing the corrosion rate and the optimum concentration was obtained at a concentration of 0.9% with a corrosion rate of 8.16 mpy.
Effect of cooling distance on DC-LSND treatment on weld defects and weld fractures of A-36 steel Heri Wibowo; Muhammad Noer Ilman; Priyo Tri Iswanto
Journal of Engineering and Applied Technology Vol 1, No 1 (2020): (March)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v1i1.34597

Abstract

Control of weld defects and weld fractures in the welding construction should be done to provide the quality assurance of the welding products and to provide a positive assessment of construction to meet technical and economic requirements. The objective of this study is to investigate the effect of the cooling distance on DC-LSND (dynamic controlled low stress no distortion) treatment on weld defects and weld fractures to obtain the best characteristic of the treatment. In this research, DC-LSND treatment was performed by cooling the both sides near weld line applied in welding process. The cooling media used cryogenic liquid nitrogen sprayed by nozzle. The nozzle was placed at a various distance behind the weld torch. Weld defect was investigated by radiograph test. Tensile strength was tested by servo pulser machine and weld fracture was examined by macro structure and SEM. Results showed that the DC-LSND treatment with a cooling nozzle that is too close to the weld torch has the potential to cause weld imperfections. Porosity and initial welding defect lead to the decrease in the tensile strength of the weld metal and the brittle fracture based on the fracture shape. SEM fractography shows that DC-LSND treatment tends to increase the number of inclusions that have an effect on increasing hardness.
Analisis kegagalan dan evaluasi sisa umur duplex filter tank akibat corrosion under insulation pada sistem heat recovery steam generator kapasitas 300.000 BCWEPD Aidil Dwi Anugerah; Priyo Tri Iswanto; Viktor Malau
Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): 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.v18i1.426

Abstract

A duplex filter tank in a heat recovery steam generator (HRSG) system which has been operating for 18 years experienced an unplanned shutdown due to leakage. Duplex filter tank consists of two tanks which are covered by an insulation to maintain the temperature of the feedwater as the main source of steam production in HRSG. However, along with continuous operation as well as tanks located in a humidity environment, this will affect the degradation of tank thickness due to corrosion under insulation (CUI). Then, it will lead to leaks resulting in unplanned shutdown and loss steam production opportunity (LPO). This study aims to examine the failure model and the root causes of failure in order to increase the reliability of the unit as well as the appropriate recommendations for preventing CUI in tank and piping systems. The object of this research is the existing duplex filter tank sample and the new duplex filter tank sample. The research method used to determine the condition of the two samples was visual observation, microstructure observation, chemical composition test, tensile test, hardness test, and corrosion rate test. The results showed that the corrosion under insulation (CUI) at the bottom of the duplex filter tank was evenly distributed and at one point occurred due to the thickness of the tank that had exceeded the permissible limit. The root cause of the failure is due to a gap between the insulation and the tank which allow the environment and rainwater to enter and be trapped under the insulation.
Analisis Sisa Umur Pakai Tube Heater Pada Heat Recovery Steam Generator (HRSG) Danan Wahyudi; Priyo Tri Iswanto
Journal of Mechanical Design and Testing Vol 5, No 1 (2023): Article in Press
Publisher : Departemen Teknik Mesin dan Industri, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jmdt.70178

Abstract

Penelitian ini bertujuan untuk mengetahui sisa umur pakai material pipa baja karbon SA 106 C yang digunakan sebagai tube heater pada heat recovery steam generator (HRSG) setelah dilakukan major overhaul. Metode yang digunakan dalam penelitian adalah menganalisis stress rupture test sejumlah spesimen yang kemudian diplot pada kurva Larson-Miller parameter (PLM) dan dilakukan ektrapolasi. Dalam ploting kurva PLM menggunakan 2 nilai konstanta yaitu 20 (ASM Handbook, 2000) dan 15,6 (API STANDARD 530, 2015). Hasil analisis didapatkan sisa umur pakai pada tekanan dan temperatur desain menggunkan metode PLM dengan nilai konstanta 20 dan 15,6 adalah 3.253 jam dan 1.425 jam. Perhitungan sisa umur pakai menggunakan metode PLM dengan nilai konstanta berdasarkan API 530 lebih konservatif.
Investigasi Pengaruh Inhibitor Korosi Molibdat Terhadap Laju Korosi Pipa Injeksi Sistem Waterflood (Baja Karbon Api 5l GR B) Dengan Media Air Formasi Sumur Minyak Bumi Jenis Sumatra Light Honawi, Bobbie; Iswanto, Priyo Tri
Prosiding Sains Nasional dan Teknologi Vol 11, No 1 (2021): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 11 2021
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/psnst.v1i1.5417

Abstract

Penyebab terbesar kebocoran sistem perpipaan di industri minyak dan gas bumi adalah karena korosi, hal ini juga tidak terkecuali pada sistem perpipaan injeksi waterflood. Salah satu langkah untuk mencegah korosi adalah dengan cara menambahkan inhibitor korosi ke dalam pipa. Penelitian ini menginvestigasi pengaruh inhibitor molibdat dengan variasi konsentrasi 0 dan 1% terhadap laju korosi pipa API 5L Grade B di lingkungan air formasi. Hasil penelitian menunjukkan laju korosi material di lingkungan air formasi sumur produksi tanpa adanya inhibitor sama sekali adalah 107,7769 mpy atau 2,7375 mm/year. Dari hasil penelitian didapat bahwa laju korosi material pada lingkungan air formasi dengan konsentrasi molibdat 1% adalah sebesar 64,1718 mpy atau 1,6300 mm/year. Penambahan inhibitor molibdat berhasil menurunkan laju korosi pipa dengan efektifitas penghambatan korosi sekitar 40%. Dari data tersebut maka dapat disimpulkan bahwa penambahan inhibitor membuat baja karbon rendah lebih tahan terhadap korosi.
Pengaruh Perlakuan Shot Peening dan Sputtering TiN Terhadap Sifat Mekanik Stainless Steel 316L Rasyadi, Muhammad Hafidh; Iswanto, Priyo Tri
Prosiding Semnastek PROSIDING SEMNASTEK 2024
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Sedikit dari material dalam kelompok metal yang dapat digunakan sebagai perangkat biomaterial implant untuk aplikasi medis. Salah satu material baja tahan karat yang dipertimbangkan untuk penggunaan medis sebagai material implant yaitu Stainless steel 316L. Keunggulan stainless steel 316L yaitu mempunyai sifat tahan terhadap korosi, mudah untuk difabrikasi, dan harganya yang lebih murah dibandingkan dengan biomaterial kelompok metal lainnya. Karakter dari stainless steel 316L tidak dapat diberikan perlakuan panas, sehingga perlu adanya metode lain dalam meningkatkan sifat-sifat mekanisnya. Salah satunya yaitu dengan perlakuan permukaan shot peening dan sputtering. Pada penelitian ini membahas mengenai pengaruh variasi durasi waktu shot peening 10 dan 20 menit menggunakan tekanan konstan 8 bar serta perlakuan sputtering terhadap struktur mikro, kekasaran permukaan dan kekerasan permukaan stainless steel 316L. Kekasaran permukaan stainless steel 316L meningkat akibat perlakuan shot peening, sedangkan perlakuan sputtering menurunkan nilai kekasaran permukaan spesimen yang telah diberi perlakuan shot peening. Nilai kekerasan permukaan meningkat akibat perlakuan shot peening dan sputtering. Peningkatan tertinggi sebesar 661,36 HV pada variasi shot peening 20 menit dan sputtering. Peningkatan nilai kekerasan optimum pada durasi shot peening 10 menit sebesar 148%. Pengamatan struktur mikro diperoleh bahwa semakin lama durasi shot peening yang diberikan, maka semakin kecil dan semakin halus struktur butir pada bagian permukaan spesimen.Kata kunci: shot peening, sputtering, Stainless Steel 316L
PENGARUH SPUTTERING TiN TERHADAP KEKASARAN, KEKERASAN PERMUKAAN MATERIAL AISI316L Jemssy Ronald Rohi; Priyo Tri Iswanto; Tjipto Sujitno; Erich Umbu Kondi
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2412

Abstract

AISI 316L is widely used for implantation in orthopedic surgery due to its good corrosion resistance, mechanical properties and low cost. However, AISI 316L is not well suited for biocompatibility with the body, so implant material with AISI 316L can’t be used for a long time. One way to improve the corrosion resistance and mechanical properties of AISI 316L is to perform a surface treatment such as sputtering. This study discusses the effect of deposition sputtering TiN of 60, 90, 120 and 150 minutes on roughness and surface hardness at a ratio of argon gas and nitrogen to 80% Ar:20% N2. The results of the surface roughness value of the TiN sputtering layer deposited to AISI 316L for 60, 90, 120, and 150 minutes were 0.02 μm, 0.04 μm, 0.06 μm, and 0.04 μm respectively. This shows that the coating time of TiN in AISI 316L has no significant influence on value of surface roughness. Surface hardness results at 60, 90, 120, and 150 minutes were obtained with 268 HVN, 275 HVN, 278 HVN and 282 HVN. Increased hardness value, as the TiN thin layer has a higher hardness value compared to AISI 316L. The longer the deposition time, the more layers are formed and the layer becomes thicker. With the thickness of the layer, the density at the grain boundary increases. Because the higher density leads to grain growth, in which form micropores.
Pengaruh Shot Peening dengan Tekanan Tinggi terhadap Sifat Fisik dan Mekanik Stainless Steel 316L Hasani, Ilham Ali; Iswanto, Priyo Tri
Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi) Vol. 7 No. 1 (2023): PROSIDING NSEMINAR NASIONAL INOVASI TEKNOLOGI TAHUN 2023
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/inotek.v7i1.3408

Abstract

Perkembangan teknologi di bidang biomedis yang pesat mampu menciptakan produk pengganti mahkota gigi. Material yang umum digunakan untuk produk biomaterial adalah stainless steel 316L. Stainlees steel 316L merupakan material dengan sifat mekanik dan ketahanan korosi yang baik. Namun untuk aplikasi di bidang biomedis sifat fisik dan mekanik stainlees steel 316L perlu ditingkatkan. Penelitian ini bertujuan untuk meningkatkan sifat fisis dan mekanik stainlees steel 316L dengan perlakuan permukaan shot peening. Variasi durasi shot peening yang dilakukan adalah 0, 10, dan 20 menit dengan tekanan tetap 14 bar. Setelah diberikan perlakuan permukaan, dilakukan pengujian kekerasan Vickers pada permukaan, pengujian kekasaran permukaan, dan pengamatan struktur mikro. Hasil yang didapatkan dari pengujian adalah kekerasan permukaan meningkat 114% dari 290,4 kgf/mm2 menjadi 630,75 kgf/mm2. Untuk nilai kekasaran permukaan terjadi peningkatan kekasaran tetapi masih memenuhi syarat biomaterial. Kemudian struktur butir yang diamati terlihat mengecil dan semakin halus setelah diberikan perlakuan shot peening.
Co-Authors Agustinus Djoko Istiadji Aidil Dwi Anugerah Andi Wiryawan Ardian Shah Bambang Hari Priyambodo Bambang Hari Priyambodo Danan Wahyudi Dian Ahmad Sudali Dian Sumantri Erich Maliwemu, Erich Erich Umbu Kondi Floriberta Binarti Gaguk Jatisukamto Haris Ardianto Hasani, Ilham Ali Heri Wibowo Himarosa, Rela Adi Hizba Muhammad Sadida Honawi, Bobbie Ilman, M.Noer Jemssy Ronald Rohi Luh Putu Ratna Sundari M Noer Ilman M. Noer Ilman Moch. Noer Ilman Mudjijana Mudjijana Mudjijana Mudjijana Mudjijana, Mudjijana Mudjijana, Mudjijana Muhammad Noer Ilman Nur Amin Prasasto Satwiko, Prasasto Rasyadi, Muhammad Hafidh Restyarno Agung Nugroho Rizqi Ilmal Yaqin Rizqi ilmal yaqin, Rizqi ilmal Saifudin - Sambodo Arif Wibowo Sotya Anggoro Sunardi, Sunardi Sutoyo Sutoyo Tjipto Sujitno Trio Nur Wibowo Triwibowo Triwibowo Viktor Malau Viktor Malau Viktor Malau Widana Dirgantara Putra