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Putra, Reza
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Analysis of Temperature Variations, Types of Insulation and Coating on Corrosion Under Insulation on ASTM A53 Pipes Putra, Reza; Muhammad, Muhammad; Hafli, T; Islami, Nurul; Apandi S, Arpan
International Journal of Engineering, Science and Information Technology Vol 2, No 1 (2022)
Publisher : Department of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (951.974 KB) | DOI: 10.52088/ijesty.v2i1.220

Abstract

Corrosion Under Insulation (CUI) can be described as localized corrosion that forms as a result of the penetration of water or moisture through an insulating material. The pipe material used is of the ASTM A53 standard and the fluid used in seawater because almost all industries are located on the coast. This type of coating is carried out on the test pipe using Meiji Epoxy Filler. The test method is carried out by flowing seawater fluid in pipes with water temperature variations of 30°C, 50°C, and 70°C. This pipe varies the type of insulation by using glasswool and Rockwool (ASTM G 189-07). This insulation is conditioned in a wet state by giving 2 ml of seawater drops with a pH value of 4 per 6 hours. The test equipment is divided into 3 series according to temperature variations with 4 test specimens and 2 coating variations respectively. The test time was carried out for 336 hours to obtain the corrosion rate results using the ASTM G31-72 weight loss method. The results showed that the type of Glasswool insulation with specimens coated had the lowest corrosion rate value of 0.00483 mmpy at a temperature of 30°C when compared to the same type of treatment on Rockwool insulation of 0.00724 mmpy or an increase of 2.41 times. This study shows that the type of insulation, temperature variation, and coating greatly affect the rate of corrosion and the type of corrosion that occurs is uniform corrosion.
The Effect of Hydrogen Enrichment on The Exhaust Emission Characteristic in A Spark Ignition Engine Fueled by Gasoline-Bioethanol Blends Rahman, Abdul; Asnawi, Asnawi; Putra, Reza; Radian, Hagi; Waluyo, Tri
International Journal of Engineering, Science and Information Technology Vol 2, No 2 (2022)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (506.493 KB) | DOI: 10.52088/ijesty.v2i2.234

Abstract

Bioethanol characteristics can be used as an alternative fuel to spark-ignition (SI) engines to reduce emissions. This experiment evaluates the production of emissions for SI engines using hydrogen enrichment in the gasoline-bioethanol fuel blends. The fraction of bioethanol fuel blend was added to the gasoline fuel of 10% by volume and hydrogen fuel produced by the electrolysis process with a dry cell electrolyzer. The NaOH was used as an electrolyte which is dissolved in water of 5% by a mass fraction. The test is conducted using a single-cylinder 155cc gasoline engine with sensors and an interface connected to a computer to control loading and record all sensor variables in real-time. Hydrogen produced from the electrolysis reactor is injected through the intake manifold using two injectors, hydrogen injected simultaneously at a specific time with a gasoline-bioethanol fuel. The test was conducted with variations of engine speeds. The emission product of ethanol--H2 (BE10+H2) was an excellent candidate as a new alternative of fuel solution in the future. The engasolinerichment of hydrogen increased the flame speed and generated a stable combustion reaction. The hydrogen enrichment produced CO2 emission due to the unavailability of carbon content in hydrogen fuel. As a result, the C/H ratio is lower than for mixed fuels.
Evaluasi Unjuk Kerja Generator HHO Type Dry Cell dengan Variasi Penambahan Karbon Aktif pada Katalis Natrium Hidroksida (NaOH) Simanjuntak, Ochitria Cintia Br; Asnawi, Asnawi; Putra, Reza; Setiawan, Adi; Alchalil, Alchalil
Malikussaleh Journal of Mechanical Science and Technology Vol. 8 No. 2 (2024): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v8i2.17844

Abstract

Gas HHO dapat menjadi energi alternatif dalam transisi energi menuju sistem energi yang lebih efisien, rendah karbon dan berkelanjutan. Gas HHO dihasilkan melalui elektrolisis air menggunakan listrik untuk mengurai air menjadi ion hidrogen. Elektrolisis air membutuhkan energi listrik yang besar sehingga digunakan karbon aktif untuk menghematnya. Penelitian ini bertujuan untuk mengetahui unjuk kerja generator HHO type dry cell dengan penambahan karbon aktif untuk meningkatkan efisiensi dan laju produksi gas HHO. Dalam penelitian ini, data yang dihasilkan berupa daya yang dibutuhkan, laju produksi gas HHO dan efisiensi generator HHO. Metode eksperimen dilakukan dengan memvariasikan karbon aktif 0-10% pada katalis NaOH dengan interval 2.5% tiap variasinya. Hasil penelitian menunjukkan bahwa variasi NaOH dengan penambahan karbon aktif 7.5% mendapatkan laju produksi gas HHO tertinggi dan efisiensi tertinggi sebesar 458.72 ml/min dan 63.04%. Sedangkan variasi yang membutuhkan daya lebih sedikit pada variasi NaOH dengan penambahan karbon aktif 2.5% sebesar 103.01 Watt.  Kata kunci: Transisi energi, elektrolisis air, gas HHO, katalis, karbon aktif
Analisis Uji Tarik dan Bending Komposit Hybrid Serat Nanas dan Glasswool Dengan Matriks Polyester Hidayat, Rizki; Muhammad, Muhammad; Islami, Nurul; Putra, Reza; Rahman, Abdul
Malikussaleh Journal of Mechanical Science and Technology Vol. 8 No. 2 (2024): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v8i2.17436

Abstract

Salah satu serat yang dapat dimaanfaatkan sebagai bahan pengisi pada produk komposit yaitu serat nanas dan glasswool yang sangat mudah didapatkan serta ramah lingkugan. Tujuan penelitian ini adalah untuk menganalisis kekuatan tarik dan bending yang teringgi pada setiap variasinya. Spesimen uji dibuat menggunakan metode hand lay up dengan pengujian tarik menggunakan ASTM D638-02 dan bending ASTM D90. Hasil pengujian kekuatan tarik yang paling optimal terdapat pada fraksi volume (SN 40% : GW 20% ) dengan nilai rata-rata sebesar  = 37,11 MPa untuk kekuatan luluh sebesar 29,87 MPa dan regangan tarik sebesar  6,49 % pada variasi (SN 30% : 30% GW) nilai rata-rata sebesar  = 24,48 MPa untuk kekuatan luluh sebesar 18,38 MPa dan regangan sebesar  6,74%, variasi (SN 10% : GW 50%) rata-rata kekuatan tarik sebesar  =17,05 MPa dengan kekuatan luluh sebesar 13,89 MPa dan regangan meningkat sebesar  829%. Hasil pengujian bending tertinggi terdapat pada variasi (SN 40% : GW 20%) dengan rata-rata kekuatan bending sebesar 115,79 MPa untuk kekuatan luluh didapatkan sebesar 5,23 MPa untuk variasi (SN 30% :GW 30%) didapatkan kekuatan bending sebesar 90,19 MPa dengan kekuatan luluh 5,23 MPa dan variasi (SN 10% : 50% GW ) didapatkan kekuatan bending sebesar 68,13 MPa dengan kekuatan luluh 3,11 MPa. Pencampuran yang terbaik terjadi pada spesimen dengan komposisi 40% serat nanas dan 20% glasswool. Jenis patahan yang terjadi berupa getas.
Analisis Uji Impact dan Uji Bending Balok Laminasi Batang Kelapa (Cocos Nucifera) dan Bambu Duri (Bambusa Blumeana) Sebagai Material Konstruksi Lunas Kapal Kayu Ikramullah, Firza; Safriwardy, Ferri; Suryadi, Suryadi; Putra, Reza; Faisal, Faisal
Malikussaleh Journal of Mechanical Science and Technology Vol. 8 No. 2 (2024): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v8i2.17178

Abstract

Penggunaan material utama konstruksi kapal dibangun dari material kayu yang mengakibatkan biaya operasional dalam pembuatannya menjadi mahal dan tidak ramah untuk lingkungan. Tujuan penelitian ini adalah untuk mengetahui perbandingan kekuatan beban kejut dan kekuatan bending dari balok laminasi batang kelapa dan bambu duri. Metode yang dilakukan adalah pengujian eksperimental dengan pengujian impact dan pengujian bending. Penelitian ini memiliki 3 model variasi lapisan, yaitu 3, 5, dan 7 dengan bentuk susunan lapisan batu bata (carvel).  Pengujian balok laminasi mengacu pada ASTM D6110-10 untuk uji impact dan ASTM D143 untuk uji bending. Balok laminasi yang akan di uji memiliki kadar air di bawah 18% sesuai dengan ketentuan BKI. Balok laminasi dengan pengujian impact variasi 3 lapisan mempunyai energi yang diserap sebesar 23,408 J dan harga impact sebesar  Laminasi variasi 5 lapisan memiliki nilai energi yang diserap sebesar 35,511 J dan harga impact sebesar   Variasi 7 lapisan memiliki energi yang diserap sebesar 40,166 J dan harga impact sebesar . Hasil pengujian bending pada balok laminasi dengan variasi 3 lapisan mempunyai kekuatan bending pada sebesar 14,37 MPa. Laminasi variasi 5 lapisan memilik nilai kekuatan sebesar 28,56 MPa dan variasi 7 lapisan memiliki nilai kekuatan yang sebesar 38,32 MPa. Hasil pengujian impact dan bending untuk balok laminasi batang kelapa dan bambu duri tergolong dalam Kelas Kuat IV-V menurut Badan Klasifikasi Indonesia, sehingga menyebabkan balok laminasi tersebut tidak direkomendasikan sebagai alternatif pengganti kayu solid untuk lunas kapal.
Deteksi Pergerakan Arah Kepala Minim Pencahayaan Menggunakan CLAHE dan YOLOv10N Pada Kursi Roda Pintar Putra, Reza; Utaminingrum, Fitri
Jurnal Pengembangan Teknologi Informasi dan Ilmu Komputer Vol 9 No 3 (2025): Maret 2025
Publisher : Fakultas Ilmu Komputer (FILKOM), Universitas Brawijaya

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

Abstract

Penyandang disabilitas khususnya individu dengan keterbatasan fisik, sering kali menghadapi tantangan dalam melakukan mobilitas sehari-hari. Kursi roda pintar hadir sebagai solusi guna mendukung mobilitas secara mandiri tanpa ketergantungan pada alat bantu konvensional seperti joystick pada kursi roda atau bantuan fisik lainnya. Penelitian yang dilakukan bertujuan untuk mengembangkan sistem deteksi peregrakan arah kepala berbasis YOLOv10N yang diimplementasikan pada kursi roda pintar guna mendukung navigasi secara real-time, terutama dalam kondisi minim pencahayaan. CLAHE (Contrast Limited Adaptive Histogram Equalization) merupakan metode yang diterapkan sebagai metode pre-processing pada dataset pelatihan untuk meningkatkan kualitas citra, sehingga memungkinkan proses pendeteksian pergerakan arah kepala pengguna menjadi lebih akurat, terutama dalam lingkungan dengan kondisi minim pencahayaan. Hasil pengujian yang dilakukan menunjukkan bahwasanya penerapan CLAHE mampu meningkatkan performa model secara signifikan, dengan peningkatan nilai Macro Average F1-Score sebesar 34,72% jika dibandingkan dengan model tanpa penerapan CLAHE. Teknik peningkatan citra seperti CLAHE dirasa penting guna meningkatkan kehandalan sistem deteksi dalam berbagai lingkungan dengan kondisi pencahayaan yang beragam, sehingga mampu memastikan sistem yang dikembangkan dapat berfungsi secara optimal.
Utilization of Waste Paper as Fiber for Motorcycle Fender Manufacturing Raw Materials Aljufri, Aljufri; Riskan, Ardi; Rizki, Muhammad Nuzan; Putra, Reza; Akmal, Syarifah
Jurnal Teknologi Vol 17, No 1 (2025): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.1.23-30

Abstract

The selection of paper as the main material for making composites in this study is driven by several considerations. HVS paper is produced by factories with the main raw material being wood. Besides, the use of HVS paper as a fiber for composites offers the potential to reduce industrial waste and reduce dependence on conventional raw materials. The purpose of this study was to determine the effect of variations in the volume fraction of HVS pulp fiber on the mechanical properties of the specimen surface and hardness test to determine the use of HVS pulp composites as raw material for making motorcycle fenders. The benefits of this research provide information for the manufacturing industry in developing innovative composite materials, offering sustainable alternatives that are environmentally friendly, increasing the use value of HVS paper processing, which has only been used as waste. From the results of the research conducted, the results obtained with the value: the hardness of the specimen with a volume fraction variation of 70% fiber has the highest average hardness value of 11.5 kg/mm2, and the variation of the volume fraction of 50% fiber has the lowest average hardness value of 8.6 kg/mm2, which has a difference of 2.9 kg/mm2 with a volume fraction variation of 70% fiber. The highest impact price value is obtained at a 70% pulp volume fraction with an average impact price of 0.0402 J/mm², while the lowest pulp composite impact price is at the volume fraction of 70% fiber. 50% pulp with an impact price of 0.0263 J/mm². The increase in hardness and impact resistance with increasing pulp volume explains that this composite can be an alternative material for application on motorcycle fenders.
Effect of Hydroxy Gas Enrichment and Higher Biodiesel Concentration on Diesel Engine Performance Asnawi, Asnawi; Muhammad, Muhammad; Putra, Reza; Islami, Nurul
Automotive Experiences Vol 8 No 1 (2025)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.12903

Abstract

The hydroxy gas enrichment as an additive of biodiesel fuel for internal combustion engines affected the combustion characteristics. Hydroxy gas can be produced through water electrolysis to produce hydrogen and oxygen, significantly enhancing the combustion rate. This combined effect increased efficiency, reduced pollution, and improved air quality. This study aims to determine the impact of hydroxy enrichment generated from water electrolysis on engine performance with biodiesel-diesel fuel blends. The experimental work was conducted under diverse operating conditions and tested on a 418 cc single-cylinder engine. Experiments have been performed at a constant hydroxy gas flow rate of 500 mL/min and a constant speed of 2000 rpm under various torques. The result shows that B30 and B40 without hydroxy gas decreased diesel engine performance across various engine torque. The addition of hydroxy has been observed to positively impact the combustion reaction and increase the energy conversion efficiency of diesel engines. Compared to pure diesel fuel, the efficiency of B30 and B40 decreased by 9.26% and 11.59%, respectively. The enrichment of hydroxy gas increases the engine efficiency by an average increase of all torque to 7.95% for B30H (B30 with hydroxy) and 8.68% for B40H (B40 with hydroxy). Therefore, compared to pure diesel fuel, the efficiency slightly decreases by an average of 1.31% for B30H and 2.91% for B40H at all tested torques. This phenomenon indicates that the presence of hydroxy gas in a diesel engine increases the stability of the combustion process, which results in higher cylinder pressure with lower energy input.
Study on Magnetic Properties Characterization of Aceh Iron Sand as Raw Biomedical Application Materials Sayuti, Muhammad; Yusuf, Muhammad; Putra, Reza; Wirawan, Riza
International Journal of Engineering, Science and Information Technology Vol 5, No 3 (2025)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v5i3.975

Abstract

The magnetic properties characterization of Aceh iron sand as the preferred material for biomedical applications was studied. Meanwhile, Aceh's iron sand is used as raw cement-making material. It is hoped that in the future, it can be used in many different biological and medical applications, such as diagnostic tests for early disease detection, to serve as tools for non-invasive imaging and drug development. Samples of the natural resource were prepared using a magnetic separator, and the concentrates were mashed by the ball milling method to achieve 112.7µm (MK), 119.3 µm (MT), 112,4 µm (LP), and 115.1 µm (SK) particle size. These features were evaluated from loop hysteresis using a vibration sample magnetometer (VSM), while x-ray diffraction (XRD) was employed to analyze iron oxide. The results estimated the values of saturation magnetization, remanent magnetization, and coercivity from Mon Klayu, Mantak Tari, Lam Panah, and Syiah Kuala at 67.79 emu/g, 10.36 emu/g and 0.02 T; 83.49 emu/g, 13.22 emu/g and 0.02 T; 62.17 emu/g, 9.32 emu/g and 0.02 T; 73.26 emu/g, 10.34 emu/g and 0.02 T, respectively. However, Fe3O4 (magnetite) occurred predominantly in the selected locations.
Impact and Bending Tests of Coconut Palm and Thorny Bamboo Laminated Beams for Wooden Ship Keel Construction Ikramullah, Firza; Safriwardy, Ferri; Suryadi, Suryadi; Putra, Reza; Faisal, Faisal; Masrullita, Masrullita
Electronic Journal of Education, Social Economics and Technology Vol 6, No 1 (2025)
Publisher : SAINTIS Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33122/ejeset.v6i1.403

Abstract

Impact and bending tests were conducted on laminated beams made from coconut palm and thorny bamboo to evaluate their potential as alternative materials for wooden ship keels. The study compared the shock load and bending strength of laminated beams with three-layer variations (3, 5, and 7), arranged in a carvel pattern. Testing followed ASTM D6110-10 for impact and ASTM D143 for bending, with moisture content kept below 18% per BKI standards. Results showed that impact strength increased with more layers, from 0.144 J/mm² (3 layers) to 0.248 J/mm² (7 layers). Bending strength also improved, from 14.37 MPa (3 layers) to 38.32 MPa (7 layers). However, the materials fell into Strength Class IV-V under Indonesian Classification Board standards, making them unsuitable as solid wood alternatives for ship keels due to insufficient strength.
Co-Authors Abdul Rahman Abdul Rahman Aby, Muhammad Adi Setiawan Akmal, Syarifah Alchalil Alchalil Aljufri Aljufri aljufri aljufri, aljufri Apandi S, Arpan Asnawi Asnawi Asnawi Asnawi, A Azhari, Nur Jannah Azhari, Wafiq Dabet, Abubakar Dailami, D Daniel Happy Putra Delfian Masrura Durmuş, Alpaslan Fachry Abda El Rahman Faisal Faisal Ferri Safriwardy Hafiz, Ridho Hafli, T Hidayat, Rizki Ikramullah, Firza Ilhamda, Risky Imanda, Riska Indra Mawardi Isra, Muhammad Jumadi, J M Sayuti M. Ali Fikri Mardian, Rikki Masrullita, Masrullita Muhammad Muhammad Gazza Muhammad Habibi Muhammad Ihsan Muhammad Muhammad Muhammad Muhammad Muhammad Muhammad Muhammad Yusuf Muhammad, M Munawir Sazali Murdani Murdani, Murdani Nurul Islami, Nurul Radian, Hagi Rianda, Faizar Riskan, Ardi Riza Wirawan, Riza Sakura, Royanna Sayuti, Muhammad Setiawaty, Sri Silalahi, M.Pd, Drs. Juniman Simanjuntak, Ochitria Cintia Br Sofyan Sofyan Suryadi Suryadi Suryadi Syahputra, Rio Mandala Syamsiar, Syamsiar Tri Waluyo Utaminingrum, Fitri Wahyuni, Rita Yusuf, Jafaruddin Zahrani, Amilia Zulkarnaen, Amay Velda Zulmiardi, Zulmiardi Zulnazri, Z