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Jurnal Universal Technic
Published by Universitas Maritim AMNI Semarang
ISSN : 29626900     EISSN : 29626897     DOI : https://doi.org/10.58192/unitech
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Transportation
Jurnal yang menjadi wadah publikasi tentang wawasan terkini dan utama yang berhubungan dengan ilmu teknik baik teknik mesin, teknik industri, teknik, lingkungan, teknik transportasi, dan teknik lainnya.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 56 Documents
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Analisis Simulasi Penetrasi Material Proyektil WC-6Co dan Baja Standar Pindad terhadap Pelat Baja Armox 500T dalam Aplikasi Pertahanan Menggunakan ANSYS Triwahyu, Mohamad; Ahmad Syafiq Rofi'i; Sitanggang, Rivilyo Mangolat Rizky; Khoirul Fajri; Aritonang, Sovian
Jurnal Universal Technic Vol. 3 No. 2 (2024): Oktober: Jurnal Universal Technic
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/unitech.v4i1.2968

Abstract

Penelitian ini bertujuan untuk menganalisis kemampuan penetrasi dua jenis proyektil, yaitu WC-6Co dan baja standar Pindad, terhadap pelat baja Armox 500T, yang dikenal memiliki ketahanan tinggi dan digunakan dalam aplikasi pertahanan. Simulasi dilakukan menggunakan perangkat lunak ANSYS Student dengan pendekatan eksplisit dinamik untuk mengevaluasi total kecepatan dan deformasi selama tumbukan proyektil pada pelat. Proyektil WC-6Co menunjukkan kemampuan penetrasi yang signifikan, menembus pelat Armox 500T dengan kecepatan maksimum mencapai 1063,4 m/s, serta menghasilkan deformasi maksimum 3,1779 meter. Sebaliknya, proyektil baja standar Pindad hanya menghasilkan deformasi lokal tanpa penetrasi, dengan kecepatan maksimum 1347,7 m/s dan deformasi maksimum 4,0253 meter. Hasil ini menunjukkan bahwa proyektil berbasis WC-6Co lebih efektif dalam menembus pelat baja Armox 500T dibandingkan dengan proyektil baja Pindad, memberikan wawasan penting bagi pengembangan sistem pertahanan dan pilihan material pelindung.
Sistem Kontrol Kendali Mesin Roll Forming Baja Ringan di PT. Primaland Pandeglang Anggito Wito Utomo; Desmira Desmira
Jurnal Universal Technic Vol. 4 No. 1 (2025): Jurnal Universal Technic
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/unitech.v4i1.3091

Abstract

The light steel roll forming machine is a tool used in the manufacturing industry to continuously shape steel sheets into specific profiles. Efficiency and accuracy in production heavily depend on the control system employed. This article discusses the implementation of an automatic control system in a light steel roll forming machine, focusing on the use of sensors, actuators, and a microcontroller-based control system. Additionally, the system is equipped with a digital printing machine to directly print product branding and light steel specifications. The research results indicate that the application of an automatic control system enhances product precision, improves production efficiency, and reduces the defect rate.
Analisis Kesulitan Belajar Siswa pada Mata Pelajaran Kelistrikan Otomotif Siswa Kelas XI Jurusan Teknik Kendaraan Ringan di SMK N 4 Lhokseumawe Heri Fahmi Ramadhan; Abubakar Abubakar; Siraj Siraj; Jumadi Jumadi; Nuraina Nuraina
Jurnal Universal Technic Vol. 4 No. 1 (2025): Jurnal Universal Technic
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/unitech.v4i1.3096

Abstract

This research aims (1) to determine the internal and external factors that cause learning difficulties for students majoring in TKRO at SMK N 4 Lhokseumawe, (2) to find out learning strategies that can help class XI students majoring in TKRO at SMK N 4 Lhokseumawe. This research is descriptive qualitative research. Data was obtained through observation, interviews, documentation. The research subjects were class XI students majoring in light vehicle engineering at SMK N 4 Lhokseumawe. Research data was analyzed using data reduction analysis methods, data presentation, and drawing conclusions. Based on the results of interviews with class Factors that cause learning difficulties include the classroom atmosphere, the way the teacher teaches, and students' internal factors such as physiology and psychology. So this research was conducted with the aim of analyzing and finding strategies to overcome students' learning difficulties. The results of the study with an average acquisition of student learning difficulties of 2.648 are included in the High category. With the qualification of learning difficulties for automotive electrical material is "High" at SMK Negeri 4 Lhokseumawe. In order to overcome this problem, teachers need to change their teaching style and encourage interaction with students, while students need to be more focused and conducive during learning. It is hoped that collaboration between teachers and students can help reduce the level of learning difficulty in automotive electrical subjects for class XI students majoring in light vehicle engineering at SMK N 4 Lhokseumawe.
Analisis Pengaturan Ulang Waktu Siklus Pada Alat Pemberi Isyarat Lalu Lintas Untuk Meningkatkan Keselamatan: Studi Kasus pada Simpang Empat Hangtuah Kota Tegal Ali, Zahdan Ferdian; Mulatsih, Retno; Amalia, Listiati
Jurnal Universal Technic Vol. 3 No. 2 (2024): Oktober: Jurnal Universal Technic
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/unitech.v3i2.3102

Abstract

Persimpangan merupakan simpul dalam jaringan transportasi dimana duaatau lebih ruas jalan bertemu dan pada simpang inilah terdapat potensi konflik lalulintas yang mungkin akan terjadi. Terutama pada simpang empat bersinyal Hangtuah kota Tegal, dimana salah satu upaya untuk mengurangi konflik lalu lintas dengan melakukan pengaturan ulang waktu siklus dan fase pada simpang. Simpang diberi pengaturan APILL bertujuan untuk menghindari terjadinya konflik lalu lintas sehingga dapat meningkatkan keselamatan, dan sebagai upaya untuk mempertahankan kapasitas jalan. Metode yang digunakan dalam analisis kinerja simpang adalah menggunakan perhitungan menggunakan MKJI dan software PTV VISSIM.Sedangkan untuk analisis konflik lalu lintas dengan melakukan pengamatan langsung dan dibandingkan dengan software SSAM untuk mengetahui jumlah konflik yang terjadi. Langkah selanjutnya yaitu dengan memberikan rekomendasi penanganan dari permasalahan konflik lalu lintas dengan menggunakan softwarePTV VISSIM.
Prototype Biodigester Biogas dengan Sistem Monitoring Berbasis Internet of Things (IoT) Muhammad Zhaky; Dinda Asyifa; Eko Supriadi; Oktrison Oktrison
Jurnal Universal Technic Vol. 4 No. 1 (2025): Jurnal Universal Technic
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/unitech.v4i1.3112

Abstract

Biogas is a renewable energy source with significant potential to reduce dependence on fossil fuels. However, conventional biodigester systems still face several challenges in monitoring methane gas production. Therefore, this research aims to design and develop a biogas digester prototype equipped with a stirrer and an Internet of Things (IoT)-based sensor to detect methane (CH4) gas levels. The research methodology involves designing a biodigester with an automatic stirrer and an MQ-2 sensor that can detect methane gas levels in real time. The data obtained is transmitted via ESP32 and displayed on the Blynk application. The research results show that the designed system can increase methane gas production and allow remote monitoring. The conclusion of this study is that the integration of IoT technology in the biodigester system can improve production efficiency and safety in biogas utilization.
Analisa Pengaruh Variasi Bevel Dan Penggunaan Backing Ceramic Terhadap Kekuatan dan Defect Material Baja Grade A Pengelasan Shield Metal Arc Welding (SMAW) Muflih, Abdullah; Sangadji, Ramli; Hamid, Abdul; Sutrisno, Sutrisno; Wa’addulloh, Mu’izzaddin
Jurnal Universal Technic Vol. 4 No. 1 (2025): Jurnal Universal Technic
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/unitech.v4i1.3701

Abstract

Grade A steel plates are commonly used in marine and offshore structures due to their high corrosion resistance. This study investigates the effect of bevel angle variations (30°, 40°, and 50°) and the use of ceramic backing on the mechanical properties and welding defects of Grade A steel using the Shielded Metal Arc Welding (SMAW) method. Welding was conducted with four-pass multipass welding. An experimental approach was employed, including macro visual inspection, dye penetrant, tensile, and impact testing. Results showed that specimens without ceramic backing (P1) had more defects such as incomplete penetration and spatter compared to those with backing (P2). All specimens met ASTM E23 impact standards (average 23.9–24.1 J/mm²). Tensile tests revealed that ceramic backing improved strength, with the highest UTS (576.1 MPa) and elongation (25%) found.

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