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Analysis of Railway Track Type Selection on the Lahat-Lubuklinggau Line Windi Nopriyanto; Septiana Widi Asuti; Puspita Dewi; Sapto Priyanto
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 10 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i10.6678

Abstract

Currently, the railway line from Lahat to Lubuklinggau uses the R.42 rail type with a crossing power capacity of 2,106 > 5,106 tons/year. An increase in road class is needed to increase crossing capacity. This research aims to determine the feasibility and impact of upgrading the rail type from R.42 to R.54 to improve the operational efficiency and safety of the Lahat-Lubuklinggau railway line. In this study, the author uses the railway loading method using the beam on the elastic foundation (BoEF) concept to calculate rail permit voltage to ensure that the capacity of the railroad can accommodate the load of railway traffic. The study results in show that with the upgrade of the railroad class to class III with the R.54 rail type, this line can transport a load of 5,924,001.60 tons/year, an increase from 1,838,390.40 tons/year. In addition, the track with the R.54 rail type also meets the requirements for trains with the largest load, considering that the allowable voltage (1,097.18 kg/cm²) is smaller than the previous rail allowable voltage (1,738.14 kg/cm²). It is estimated that the R.54 rail type has a life resistance of 16-17 years against crossing power without the Babaranjang train and for 9-10 years against crossing power with the Babaranjang train for the coming year.
Pelatihan Penggunaan Flowchart untuk Meningkatkan Kemampuan Algoritma Pemrograman di SMK Negeri 1 Ngawi Teguh Arifianto; Sunaryo Sunaryo; M Afif Amalul Arifidin; Andri Pradipta; Puspita Dewi; Alfian Yuda Prasetiyo; Agil Pranutianingrum; Ajeng Sabhina Putri Sahara; Eko Yunianto Adi Cahyono; Lamijan Lamijan
Jurnal Pemberdayaan Masyarakat dan Komunitas Vol 3, No 1: 2026
Publisher : STAI Nurul Islam Mojokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52620/jpmk.v3i1.275

Abstract

Pesatnya perkembangan teknologi informasi menuntut lulusan Sekolah Menengah Kejuruan (SMK) memiliki kemampuan algoritma dan logika pemrograman yang baik, khususnya di bidang jaringan komputer dan telekomunikasi. Berdasarkan kondisi tersebut, kegiatan pengabdian kepada masyarakat dilaksanakan di SMK Negeri 1 Ngawi pada 29 Oktober 2024 dengan tujuan meningkatkan kompetensi siswa dalam memahami dan menerapkan konsep dasar algoritma dan logika melalui pendekatan visual berbasis flowchart. Kegiatan ini terdiri atas beberapa tahapan yaitu persiapan materi, koordinasi dengan sekolah, pelaksanaan pelatihan berupa teori, demonstrasi interaktif, praktik langsung, dan evaluasi. Hasil pelaksanaan menunjukkan adanya peningkatan signifikan dalam kemampuan siswa menyusun flowchart dan memecahkan persoalan pemrograman sederhana. Selain itu, umpan balik dari peserta dan pihak sekolah sangat positif sehingga direncanakan pengembangan kegiatan pelatihan lanjutan dengan materi yang lebih kompleks. Kegiatan ini diharapkan menjadi model pelatihan vokasi berbasis visualisasi algoritma yang dapat diterapkan di sekolah kejuruan lainnya.
Innovation In Renewable Energy Systems: Utilization Of Piezoelectric Sensors On Railway Tracks To Harvest Vibration Energy FIRJATULLAH AKBAR PUTRA BUDIMAN; Bagas Pandya; Anung Kusuma; Hasna Fadhilah; Puspita Dewi; Alfian Yuda Prasetiyo; Muhamad Nurhadi
Journal of Railway Transportation and Technology Vol. 4 No. 2 (2025): November
Publisher : Politeknik Perkeretaapian Indonesia Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37367/jrtt.v4i2.57

Abstract

Green energy development prioritizes sustainable sources like solar, wind, biomass, and geothermal to combat climate change and resource depletion. In this context, piezoelectric technology offers a promising solution for energy harvesting from vibrations and mechanical stresses, such as those generated by vehicles or trains. This technology converts mechanical pressure into electrical energy via polarization changes within piezoelectric materials. This system has proven effective in powering electronic devices and signaling systems at railway level crossings, especially in remote areas lacking grid access. This study employs a descriptive method with a quantitative approach, utilizing experimental data. Data acquired from experiments conducted with the device positioned at a railway level crossing, observing passing trains and various motor vehicles including cars, trucks, and buses, indicated a generated power of 18,185 watts. With the series installation of ten such devices, a total power output of 165.44 Watts per day can be achieved, which is sufficient to meet the energy demands of the signaling system. The harvested energy powers signaling systems, lighting, and other electronic equipment at level crossings. Implementing this technology not only enhances sustainability through renewable energy use but also reduces reliance on external electricity supplies. Consequently, piezoelectric technology significantly improves operational efficiency and railway safety, particularly at level crossings.
Co-Authors Aghastya, Adya Agil Pranutianingrum Ajeng Sabhina Putri Sahara Ajeng Tyas Damayanti Alfian Yuda Prasetiyo Andri Pradipta Anung Kusuma Armyta Puspitasari Astuti, Septiana Widi Bagas Pandya Boriana Boradjieva Dimas Adi Perwira Eko Yunianto Adi Cahyono Ependi, Ahmad Fadillah, Kevin Yunan FIRJATULLAH AKBAR PUTRA BUDIMAN Hana Wardani Puruhita Hasna Fadhilah Ilham Satrio Utomo Kurniawan, Muhammad Adib Lamijan Lamijan M Afif Amalul Arifidin Muhamad Nurhadi Nurul Fitria Nurzukhrufa, Antusias Prativi, Ayu Rusman Prihatanto, Rusman Sapto Priyanto Septiana Widi Astuti Septiana Widi Asuti Sunaryo Teguh Arifianto Wahyu Tamtomo Adi Wawan Riyanta Windi Nopriyanto Yuwono Wiarco Yuwono  Wiarco