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All Journal SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN International Journal of Artificial Intelligence Research Maqasid: Jurnal Studi Hukum Islam Muaddib : Studi Kependidikan dan Keislaman Jurnal Rekayasa Material, Manufaktur & Energi Misykat al-Anwar Jurnal Kajian Islam dan Masyarakat Martabe : Jurnal Pengabdian Kepada Masyarakat Ensiklopedia of Journal JURNAL CRANKSHAFT Al Maal: Journal of Islamic Economics and Banking Jurnal Vokasi Rayah Al Islam : Jurnal Ilmu Islam Piwulang : Jurnal Pendidikan Bahasa Jawa Jurnal Abdi Insani Rausyan Fikr : Jurnal Pemikiran dan Pencerahan Tadarus Tarbawy : Jurnal Kajian Islam dan Pendidikan JTTM: Jurnal Terapan Teknik Mesin El-kahfi : Journal of Islamic economics Islamika Granada DEVICE MAQASIDI Jurnal Legisia IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) ITQAN: Journal of Islamic Economics, Management, and Finance Darul Hikmah: Jurnal Penelitian Hadits dan Tafsir Jurnal Ekonomika Manajemen Dan Bisnis Enrichment: Journal of Multidisciplinary Research and Development JURUTERA (Jurnal Umum Teknik Terapan) kawanad Jurnal Masyarakat Berdikari dan Berkarya (MARDIKA) Journal of Educational Technology and Instruction Jurnal Polimesin Indonesian Journal of Islamic Economic Law Jurnal Ekonomi, Manajemen, Akuntansi Nemui Nyimah
Arif, Zainal
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Samudra, 24416, Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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Innovative Jominy Test Equipment for Evaluating The Hardening Of AISI 1045 Steel Rahman; Arif, Zainal; Suheri; Bahri Widodo, Syamsul
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.10937

Abstract

The development of heat treatment testing equipment is essential in metallurgical applications, especially for determining the hardenability of steel. This study focuses on designing a portable Jominy test apparatus to evaluate the hardenability of AISI 1045 medium carbon steel, offering a more practical and cost-effective solution. The apparatus was built with an angle iron frame (64 x 82 x 64 cm) and equipped with a 200-liter water drum and a Shimizu water pump (18 L/min flow rate). Hardness testing was performed using the Rockwell B method (150 kgf load, 15-second dwell) on specimens subjected to three conditions: raw, water-quenched, and oil-quenched, after heating at 900 °C for 30 minutes. The results showed hardness increases from 91.00 HRB (raw) to 101.33 HRB (water-quenched) and 100.33 HRB (oil-quenched), with water quenching producing slightly higher values due to its faster cooling rate. The study demonstrates the effectiveness of the portable apparatus for evaluating AISI 1045 steel hardenability with advantages in portability, cost, and reliability.
Fenomena aliran melintasi empat buah silinder sirkular yang tersusun in line square Manuels, Arif; Cut, Banta; Arif, Zainal
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.11828

Abstract

The development and application of circular cylinders are extensively used in various fields of engineering. These applications include the construction of offshore support pipelines, subsea pipeline networks, and shell-and-tube heat exchangers. Previous research has consistently shown that drag force, lift force, and vortex shedding occur when fluid flows past these cylinder arrangements. Consequently, further investigations have been conducted through numerical simulations, primarily aiming to mitigate these undesirable phenomena of drag, lift, and vortex shedding within the circular cylinder arrangements. This particular study focuses on four circular cylinders arranged in an in-line square configuration. The main cylinder diameter (D) is 25 mm, while the diameter of the disturbing body (BP) (d) is 4 mm, resulting in a diameter ratio (d/D) of 0.16. This cylinder arrangement was positioned within a narrow square channel with cross-sectional dimensions of H = 300 mm and L = 1500 mm. The setup had a blockage ratio of 25% and was tested at a Reynolds number (Re) of 5.0×104, based on the cylinder diameter. For the study, three variations of Inlet Disturbance Bodies (IDB) were placed at angles of 0o, 90o, and 270o in front of the two upstream cylinders, maintaining a gap ratio (G/D) of 0.16 relative to the circular cylinders. This numerical simulation research was carried out using 2D Unsteady-RANS via Ansys Fluent Student R2021 software. A structured mesh was employed for meshing, and the k-ω-SST model was selected for turbulence modeling. The findings of this research indicate that both the distance (L/D) and the implementation of three IDBs significantly influence the drag coefficient observed on the four circular cylinders arranged in an in-line square formation. Specifically, the addition of three IDBs around the two upstream cylinders at angles of 0o, 90o, and 270o proved to be highly effective in reducing the drag coefficient (CD) on cylinder 3 (downstream top) and cylinder 4 (downstream bottom).
Machinability of Polymer Foam Composites Reinforced with Oil Palm Empty Fruit Bunch (OPEFB) Fibers for Robot Car Body Applications Rosyadan, Dafa Amrina; Arif Adlie, Taufan; Arif, Zainal
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.12083

Abstract

Oil Palm Empty Fruit Bunches (OPEFB) is one of the solid wastes of the palm oil industry that is used as an alternative material to replace composite products. Composite is a material that is formed from a combination of two or more materials so that a composite material is produced that has different mechanical properties and characteristics from the forming material. This research aims to make the body of a food delivery car robot and obtain the characteristics of being able to machine (Drilling and Sawing), The test material used is a foamed polymer composite material reinforced with OPEFB fiber. The composite manufacturing process is carried out by the hand lay-up method. This test was carried out using 3 variations of drill bits with diameters of 4 mm, 6 mm, and 8 mm and by using cutting speeds of 20 m/min, 40 m/min, and 60 m/min. From the results of the comparison, the use of drill bits with a diameter of 8 mm obtained the most optimal results, where a cutting speed of 20 m/min produced a rotation speed of 796.17 rpm, a cutting speed of 40 m/min produced a rotation speed of 1592.3 rpm, and a cutting speed of 60 m/min produced a rotation speed of 2388.5 rpm. The greater the cutting speed, the greater the spindle rotation produced; the low cutting speed followed by the low spindle rotation does not raise the cutting force enough so that the composite plane will break.
Studi Pemanfaatan Enceng Gondok (Eichhornia Crassipes) sebagai Bio-briket Ramah Lingkungan: Studi Eksperimental Bahri Widodo, Syamsul; Arif, Zainal; Yakob, Iskandar; Suheri, Suheri; Sembiring, Dicky Maranata
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 1 (2025): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i1.193

Abstract

Eichhornia crassipes (water hyacinth) is a fast-growing aquatic plant in tropical regions like Indonesia. Though often considered a weed, it remains underutilized as an alternative energy source. This study explores its potential as a solid fuel in the form of eco-friendly bio-briquettes. The production process includes drying, carbonization, sieving, mixing with binder, molding, and final drying. Laboratory tests involved proximate analysis and calorific value measurement. Results showed that the briquettes contained 9.61% moisture, 3.93% ash, 7.89% volatile matter, 78.57% fixed carbon, and a calorific value of 25.8 kJ/g. Compared to coconut shell briquettes, water hyacinth briquettes burn more slowly but offer cleaner and more stable combustion. These characteristics make them a suitable renewable energy source for households and small industries.
The Impact of Islamic Banking Growth and Development on Public Trust in Indonesia Zulkarnain, Zulkarnain; Arif, Zainal
El-kahfi | Jurnal Ekonomi Islam Vol 6 No 01 (2025): "Islamic Economic Transformation in the Digital Era: Innovation, Inclusivity, an
Publisher : Sekolah Tinggi Ekonomi Syariah Manna Wa Salwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58958/elkahfi.v6i01.391

Abstract

The development of Islamic banking in Indonesia has shown significant progress, yet public trust remains a critical determinant for its sustainable growth. This study investigates the influence of Islamic banking growth and development on public trust, focusing on three key dimensions: digital innovation, asset growth, and financing expansion. The objective is to determine which factors most strongly affect trust and how this trust impacts customer loyalty and preference toward Islamic financial institutions. Using a quantitative survey method, data were collected from 400 respondents across various regions in Indonesia who are users or observers of Islamic banking services. The research employed statistical analysis techniques including descriptive statistics, classical assumption tests, and multiple linear regression analysis to examine relationships among the variables. The findings reveal that digital innovation has the most significant positive impact on public trust, followed by asset growth and financing performance. Trust, in turn, mediates customer loyalty and preference for Islamic banking. The study also finds that consistency in applying Shariah-compliant practices enhances credibility and long-term engagement with customers. This study contributes to the literature on Islamic banking by integrating Islamic ethical perspectives, including references from the Qur'an and Hadith, into the discourse on financial trust. Practically, the results highlight the importance of technological innovation and value-based service delivery in strengthening trust in Islamic banking institutions. The study recommends continuous investment in digital platforms, ethical financing models, and transparent communication strategies to improve trust and institutional sustainability.
Kontribusi Wakaf Produktif Terhadap Infrastruktur Dan Pendidikan Di Era Dinasti Umayyah Rohman, Agus Hidayatul; Arif, Zainal
EKOMA : Jurnal Ekonomi, Manajemen, Akuntansi Vol. 4 No. 4: Mei 2025
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/ekoma.v4i4.10118

Abstract

Penelitian ini bertujuan untuk menganalisis kontribusi wakaf produktif terhadap infrastruktur dan pendidikan di era Dinasti Umayyah. Metode yang digunakan adalah kualitatif dengan pendekatan studi pustaka, yang melibatkan kajian terhadap literatur sejarah dan sumber-sumber tertulis terkait wakaf serta dampaknya terhadap pembangunan infrastruktur dan pendidikan. Dalam bidang infrastruktur, penelitian ini mengungkap bagaimana pemerintah Umayyah mengelola dana wakaf untuk membiayai proyek-proyek besar, seperti pembangunan saluran air, jalan raya, rumah sakit, masjid, dan fasilitas umum lainnya. Proyek-proyek ini tidak hanya mendukung ekonomi dan kesejahteraan sosial, tetapi juga memperkuat struktur sosial-politik melalui integrasi wilayah yang luas. Di bidang pendidikan, wakaf produktif digunakan untuk mendirikan madrasah. Dana wakaf juga digunakan untuk menggaji tenaga pengajar, membiayai perawatan fasilitas pendidikan. Hasil penelitian menunjukkan bahwa wakaf produktif berperan sebagai instrumen penting dalam mendukung perkembangan infrastruktur sosial dan ekonomi serta pendidikan pada masa Dinasti Umayyah.
TESTING THE FLEXURAL PROPERTIES OF POLYMER COMPOSITES FOAMING HYBRID OIL PALM EMPTY FRUIT BUNCHES (OPEFB) AND ZINC OXIDE (ZnO) Adlie, Taufan Arif; Rizal, Samsul; Ali, Nurdin; Huzni, Syifaul; Arif, Zainal; Suheri, Suheri
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 14 No. 2 (2020): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.2.68-73

Abstract

Oil palm empty fruit bunches (OPEFB) is one of the palm oil industry solid wastes that can be used as an alternative material to product composites. This research was conducted to determine the effect of the addition of Zinc Oxide (ZnO) as a filler material hybridized with OPEFB fiber to the flexural strength of polymeric foam composites. The aim of this research is to obtain the strength of the flexural test value of the composite material polymeric foam reinforced OPEFB fiber and Zinc Oxide (ZnO) with reference to the ASTM D790-92 standard. The composition of the specimens are 70% Resin, 15% OPEFB Fiber, 15% Polyurethane with different fiber sizes namely mesh (40, 60, 80, 100) and the addition of Zinc Oxide (ZnO) of (0%, 5%, 10%, 15%, 20%). The test specimen used for each composition is 5 samples, so that the entire test sample is 100 samples. From the test data it can be concluded the value of flexural strength in the 100 mesh OPEFB specimens and the addition of Zinc Oxide (ZnO) 10% is the best composition compared to 40, 60 and 80 mesh OPEFB with the addition of Zinc Oxide (ZnO) 5%, 15%, and 20%, where the voltage value is 10,01141 MPa and the strain value is 0,898456 mm / mm. From the research data it can also be concluded that the smaller the OPEFB fiber size with the addition of zinc oxidation (ZnO) 10%, the flexural strength of the polymeric foam composite material will be better.
Quality Management Of Educator Resources In The Development Of Inclusion Madrassas In Banten Province Setiawan, Agung; Priharta, Andry; Arif, Zainal; Bahri, Saiful
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 4 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v3i4.393

Abstract

This study aims to analyze the quality management process of educator resources, identify supporting and inhibiting factors in the quality management process of educator resources towards the development of inclusive madrasas, and analyze strategies in the development of inclusive madrasas in Banten Province. The research method used in this study is a qualitative research method with a case study approach. Data was excavated through participants, namely: madarsah heads, madrasah deputy heads, inclusion teachers, classroom teachers and madrasah operators. The results of this study show that the quality management of educator resources in madrassas is inclusive through the process: planning, recruitment, selection, placement, and evaluation. Supporting factors through cooperation with various related parties, support and policies from the government, as well as the enthusiasm of educators in educating and building inclusive madrasas. The inhibiting factors come from limited funding and the lack of educators with linear educational backgrounds with inclusion madrasah programs. The strategy is to improve the quality of educators by creating a learning week program. The procedures for learning week activities: identifying learning needs, preparing learning program plans, implementing learning activities, evaluating learning outcomes, reflection and follow-up, as well as reporting learning activities. Furthermore, in building a madrasah ecosystem by: visionary madrasah head leadership, creating a teacher learning community, sustainable professional development, infrastructure and technology support, assessment and feedback systems, collaborative and innovative culture, and parents. The implications of this study indicate the importance of educators to continue to improve pedagogic, professional, social, and personality competencies in the context of inclusive madrasas. The implementation of good educator resource management can improve the accessibility and quality of educational services in inclusion madrasas.
Experimental Study of Heat Absorption in Concrete with Paraffin and Beeswax Encapsulated in Plastic Balls as Phase Change Materials Rejeki Josua Purba, Heri; Amin, Muhammad; Arif, Zainal
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 02 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i02.12058

Abstract

Energy consumption in the building sector, particularly for air conditioning (AC), accounts for approximately 30% of global energy use and one-third of greenhouse gas emissions. In urban areas, the use of conventional materials such as red bricks and concrete blocks contributes to increased indoor temperatures, thereby raising electricity demand. One promising solution is thermal energy storage technology using Phase Change Materials (PCM). This study presents an experimental investigation of heat absorption in 30×30×15 cm concrete specimens with the addition of paraffin and beeswax PCM encapsulated in plastic balls. The PCM content was varied at 0%, 5%, 10%, and 15% of the concrete volume. Heating was applied using three 160-watt incandescent lamps. The results showed that concrete containing PCM absorbed more heat than the control specimens. Heat absorption by paraffin was 8.19%, 9.83%, and 16.39%, while beeswax achieved 4.91%, 8.19%, and 14.75%. These findings suggest that the use of PCM encapsulated in plastic balls can enhance the thermal energy efficiency of concrete and reduce electricity consumption in buildings.
Analisis Pengaruh Besar Sudut Potong & Ketebalan Mata Pisau Pada Mesin Pencacah Daun Kering Terhadap Hasil Cacahan Izhar Amri, Muhammad; Bahri Widodo, Syamsul; Arif, Zainal
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 02 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i02.12077

Abstract

Technology development aims to simplify work and improve equipment efficiency, including modifying the dry leaf chopper to optimize chopping results. This modification focuses on variations in the angle and thickness of the blade to obtain finer shreds that meet the needs. This study aims to determine the most effective cutting angle and blade thickness in producing the best shreds. The research was conducted at the Mechanical Engineering Laboratory of Samudra University in August 2024. The blades used varied in cutting angles of 30°, 20°, and 10° and thicknesses of 3 mm and 5 mm. The quantitative analysis method was applied in this study using the independent sample T-test to evaluate the effectiveness of each variable. The results showed that a blade angle of 10° was the most effective angle for softening the chopped dry leaves. In addition, the most optimal blade thickness to produce fine shreds was 3 mm. This modification shows a significant improvement compared to the previous shredder, which used an angle and blade thickness with less than optimal results. With this research, it is expected that the dry leaf shredder can function more efficiently and produce shreds that meet the standards
Co-Authors A. Abdullah, Nasruddin Abdillah, Tegar Abdul Rahman, Nazaruddin Achmad Jusuf Zulfikar Affan, Mohammad Firza Afiful Ikhwan agung setiawan Agus Rinaldi Ahmad Suryadi, Ahmad Ahmad, Nazli Aidi Sutikno Alfarizi, Mohammad Risko Alfina Trisman Yanti Ali, Masri Ali, Nurdin ALI, NURDIN Ali, Sulaiman Alnanda Hafiez Lagalgarin Amalia Harmin Ami Nur Jihan Andriansah, Febri Anip Dwi Saputro, Anip Dwi Anta Maulana, Riza Arifin, Ja’far Ariyanto, Ayok Atep Hendang Waluya ATIN, SRI - Awang, Abu Ilham Azzahra, Aprodita Baehaqi Bahri, Efri Syamsul Basyit, Abdul Bintang, Adinda Putri Mutiara Chyndi Chelvia Cut Inayah Cut, Banta Devy Suhendar Dwitha Nirmala Fatahillah, Tubagus Abdull Fazri Amir fitria, Zul Habibi, Ananda Handayani, Nurlaila Happy Susanto Harmin, Amelia Hasanuddin, Iskandar Hasmi, Farhan Husaini Husaini Husein, Mohamad Akmal Alwi Husni Ihsan, Ahmad IRMA DEWI Irza Sukmana, Irza ISKANDAR Iskandar Iskandar Itaqlala, Nabilah Izhar Amri, Muhammad Jahan, Rayhan Shah Jayawarsa, A.A. Ketut Joshua Tri Saputra Jufrizal Jufrizal Junaidi Junaidi Kamil, Syahiir Kartika, Fitria likhun, Muf Lola Yustrisia Lubis, Maysaroh Luthfi Furqan Hidayah M. Nizar Machmud M. Reza Prima Mahfiroh, Ririn Maidin, Maidin Maliki, Abd. Manuels, Arif Masri Ibrahim Meitriana, Inggit Menazmi, Teuku Moh. Khoirul Anam Muh. Tajab, Muh. Muhamad Zen Muhammad Amin Muhammad Amin Muhammad Idris Muhammad Idris Muhammad Syafii Muhammad Zulfri Muhammad, Alfan Jawahir Muhammad, Ichwan Arifin Munawar Reza Muqadis Ilhafa Mursyidah Mursyidah Muslich, Ahmad Nadya, Yusri Nafrizal Nanda Saleysia Aziza Nasruddin Nasruddin Nasution, Elvy Sahnur Nasution, Fadly A. Kurniawan Nazaruddin Abdul Rachman Nazaruddin Abdul Rachman Nurafni, Fina Nurbojatmiko Nurbojatmiko, Nurbojatmiko Nurman Pamungkas Patmawati Priharta, Andry Purnaya, Adjy Putra, Alfito Rahman Ramadani Siregar Ramadhan, Muhammad Afin Ramadhani, Rizky Randa Pratama Razaq Hammam Alamsyah Raziqin, Muhammad Khairul Rejeki Josua Purba, Heri Reza, Nursyahril Rifah Nurhidayah Rifaldi, Dwi Rita Syntia Rita Syntia Ritonga, Abriandi Sahputera Ritonga, Din Aswan A. Riyansah Botutihe, Rahmad Rizal Adi Saputra Rohman, Agus Hidayatul Rosyadan, Dafa Amrina Rosyadi , Zidan Nayyiv Rosyadi, Fazlur Rahman Rudiatin, Endang Rustiana, Siti Hamidah Sabri, Faris Ahmad Mizanus Safi'i, Muhamad Saiful Bahri Salamun, Ade Salsabilah Samosir, Reynaldi Samsul Rizal Santika, Murni Sariyusda, Sariyusda Sembiring, Dicky Maranata Septiani, Adinda Dwi Sianti, Diska Amalia Sigit Dwi Laksana, Sigit Dwi Sigit, Sigit Dwi Laksana Sihombing, Bryan Stein Siswo Pranoto Slamet Royadi Sri Cahyani Sri Mulyati Suandhana, Uud Pandu Sudin, Mahmudin SUGIYANTO Suheri Suheri Suheri - Suheri Suheri Suheri Sulaiman Thalib Sumawijaya Supriadi Surawan, Surawan Suri Purnama Febri Syahrizal Syifaul Huzni Syifaul Huzni Taufan Arif Adlie Taufiq Kamil Teuku Azuar Rizal Teuku Kamaruzzaman Ulinnuha, Kamila Utama, Indra Utami S, Wanda Valencia, Marcella Wathoni, Mahbubul Widodo, Syamsul Bahri Yakob Iskandar Yakob, Iskandar Yasin Efendi Zaedi, Muhamad Zahira, Hasna Zakir Husin Zulfiko, Riki Zulfitria Zulfitria, Zulfitria Zulhanif Zulkarnain Zulkarnain Zulkarnain Zulkarnain