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Randis Randis
Politeknik Negeri Balikpapan
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PKMS Aplikasi Penerapan Energi Terbarukan Solar Cell untuk Pemenuhan Kebutuhan Air di Panti Asuhan Al-Yaumuddin Randis Baharuddin; Hadiyanto Hadiyanto; Hadi Hermawan
Jurnal Abdimas Mahakam Vol. 4 No. 02 (2020): JURNAL ABDIMAS MAHAKAM
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24903/jam.v4i02.973

Abstract

Penerangan dikompleks Panti asuhan YaumiddinKm.24 Balikpapan masih sangat terbatas yaitu dengan menggunakan penerangan dari PLN yang sangat tidak memadai, Pengurus panti juga menggunakan generator set sebagai sumber energi untuk menggerakkan pompa namun hal ini hanya untuk beberapa saat mengingat kemampuan/daya beli pengurus panti terhadap bahan bakar generator set yang kurang. Program Pengabdian kepada Masyarakat Stimulus (PKMS) yang telah dilaksanakan oleh tim dari Politeknik Negeri Balikpapan telah memberikan dampak signifkan kepada masyarakat mitra dalam hal ini panti asuhan yaumuddin Balikpapan utara. Penerapan pemenuhan sistem energi listrik dengan memanfaatkan energi terbarukan berupa panel solar cell telah memberikan dampak yang sangat signifikan dengan bekerjanya pompa air yang sebelumnya harus dijalankan dengan bantuan genset, kini dapat digerakkan oleh perangkat solar cell yang telah dipasang oleh tim PKMS, sehingga mengurangi biaya tambahan untuk membeli bahan bakar. Terpasangnya instalasi untuk menghidupkan sound system masjid dengan kualitas suara yang cukup baik, guna menunjang pelaksanaan ibadah warga panti asuhan.
Implementation of Fuzzy Logic in Fish Dryer Design Yanti, Nur; Nur, Taufik; Randis, Randis
ILKOM Jurnal Ilmiah Vol 14, No 1 (2022)
Publisher : Prodi Teknik Informatika FIK Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/ilkom.v14i1.1092.39-51

Abstract

The fish drying process aims to preserve fish, so as to reduce losses due to the spoilage process. There is sunlight, the drying process does not experience obstacles, however if it is raining, it will take a longer time, and give a smell effect that disturbs the surrounding environment for a relatively long time. Fish dryer designed to work automatically, aims to speed up drying time using fuzzy logic, thus minimizing rot and air pollution due to the smell of the fish drying process. The design of the tool used experimental methods through literature study as a source of study, planning and manufacturing of fish drying equipment consists of hardware using the Arduino Mega 2560 microcontroller, temperature sensor of DHT 22, load cell sensor, humidity sensor, fan, heating element and LCD and software using the Fuzzy Mamdani method. The results obtained are the weight of the fish that has undergone a drying process using an automatic drying device, namely 500 grams, indicating that the drying process is 50% of the initial weight of 1000 grams, with a drying time of 4.48 hours, while drying time by drying or manually takes 45 hours. Shows the control system using fuzzy logic on fish drying equipment, speed up the drying time about 10 hours faster than the drying time by drying in the sun. So that it can increase the amount of dry fish production, reduce the smell in the environment around the drying, because the fish are in the dryer closed.
Bio-hybrid carbon fibre/OPFF epoxy composites: mechanical, interfacial, and thermal performance Randis, Randis; Hermansyah, Hadi; Syahruddin, Syahruddin; Achmad, Karmila; Yusrina, Yasmin Zulfati; Samosir, Devina Sanchia; Wibowo, Edi; Raharjo, Rudianto
Jurnal Polimesin Vol 24, No 2 (2026): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i2.8587

Abstract

The development of sustainable lightweight composites with reliable structural integrity is important for transportation and construction applications. This study investigates a bio-hybrid sandwich composite comprising carbon fibre skins and Oil Palm Frond Fibre (OPFF) as a natural porous core, with emphasis on improving interfacial integrity through chemical modification. The primary objective is to evaluate the effectiveness of sequential NaOH and H₂O₂ treatment in enhancing mechanical performance, interfacial bonding, and thermal stability of the composite system. Hybrid composites were fabricated using an epoxy matrix, combining carbon fibre reinforcements with untreated and chemically treated OPFF cores in various fibre configurations. Mechanical properties were assessed under tensile, flexural, and impact loading, while interfacial morphology and thermal behaviour were examined using microscopy and thermal analysis. The results demonstrate that NaOH + H₂O₂ treatment improves composite performance, with treated unidirectional hybrids exhibiting the highest tensile and flexural strengths. Microscopic observations reveal a substantial reduction in fibre pull-out, debonding, and skin–core delamination, indicating enhanced interfacial integrity and more efficient load transfer. In addition, treated composites show improved thermal stability. The novelty of this work lies in demonstrating that chemically treated OPFF can function as a sustainable sandwich core, where improved interfacial bonding plays a decisive role in suppressing delamination and enhancing overall composite performance.
Co-Authors Akbar, Syaeful angga wahyu aditya Arwin Arwin Asri Setiarini Basri Basri Darmadi , Djarot B. Darmawan, Rony Edi Wibowo Eelizabeth Milaningrum Emil Azmanajaya Femiana Gapsari MF Gapsari , Femiana Hadi Hermansyah Hadi Hermansyah Hadi Hermansyah, Hadi Hadi Hermawan Hadiyanto Hadiyanto Ida Bagus Dharmawan, Ida Bagus Karmila Achmad Lilik Damayanti M. Sumartono, Yolanda Vivina mahmud mahmud Milaningrum, Eelizabeth Mohamad Amin Mohamad Isram Novita Novita Nur Yanti Nur Yanti, Nur Patria Rahmawaty, Patria Risti Jayanti Rony Darmawan Rudianto Raharjo Rus , Tatag Yufitra Samosir, Devina Sanchia Sarminto Sarminto Sidi Na'ali Sonief , Achmad As’Ad Sri Susilawati Islam Suharlena Suharlena Syaeful Akbar Syaeful Akbar Syahruddin Syahruddin Syahruddin Syahruddin, Syahruddin Syaiful Akbar Syaiful Syaiful Taufik Hidayat Taufik Nur Totok Sulistyo Yudi Kurniawan Yudi Kurniawan Yusrina, Yasmin Zulfati