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All Journal Bulletin of Electrical Engineering and Informatics Jurnal Teknik Mesin Explore: Jurnal Sistem Informasi dan Telematika (Telekomunikasi, Multimedia dan Informatika) Bulletin of Electrical Engineering and Informatics Bulletin of Electrical Engineering and Informatics Jurnal Teknik Mesin Indonesia Nusantara: Jurnal Pendidikan Indonesia Journal of Applied Science and Advanced Engineering
Riza, Muhammad
Universitas Bandar Lampung
Aerospace Engineering Automotive Engineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Physics Other

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Analisis Kuat Tekan Paving Block Berbahan Plastik LDPE Daur Ulang sebagai Substitusi Agregat Halus Bambang Pratowo; Riza Muhida; Muhammad Riza; Indra Surya; Kunarto Kunarto; Zein Muhamad; Harjono Saputro; Mulyana Mulyana; Dewi Fitria
JURNAL TEKNIK MESIN Vol 15, No 1 (2026): APRIL 2026
Publisher : Universitas Bandar Lampung

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Abstract

Abstrak. Penggunaan plastik jenis Low Density Polyethylene (LDPE) dalam kehidupan sehari-hari berkontribusi besar terhadap peningkatan limbah padat di Indonesia. LDPE sulit terurai secara alami sehingga berpotensi menimbulkan pencemaran lingkungan. Penelitian ini bertujuan menganalisis pemanfaatan limbah plastik LDPE sebagai bahan substitusi pasir dalam pembuatan paving block, serta mengetahui pengaruhnya terhadap kuat tekan. Dua sampel paving block dibuat dengan komposisi berbeda, yaitu: (1) plastik dan oli (85%:15%) dan (2) plastik, pasir, dan oli (50%:35%:15%). Metode pengujian mengacu pada SNI 03-0691-1996 mengenai bata beton. Hasil pengujian menunjukkan bahwa kuat tekan paving block sampel 1 adalah 2,07 MPa, sedangkan sampel 2 mencapai 2,37 MPa. Peningkatan kuat tekan pada sampel 2 dipengaruhi oleh densitas pasir yang lebih tinggi (1400 kg/m³) dibandingkan plastik (0,91 g/cm³) dan oli (870 kg/m³). Walaupun nilai kuat tekan belum memenuhi standar mutu D (8,5 MPa), penelitian ini membuktikan bahwa penambahan pasir pada komposisi paving block plastik dapat meningkatkan performa mekanis produk.
Analisis Pengaruh Difusi Karbon melalui Metode Pack Carburizing terhadap Peningkatan Kekerasan Aluminium 1100 Indra Surya; Riza Muhida; Muhammad Riza; Erry Yulian Triblas Adesta; Bambang Pratowo; Kunarto Kunarto; Zein Muhamad; Harjono Saputro; Mulyana Mulyana; Julleo Caecar Onasis Pangihutan
JURNAL TEKNIK MESIN Vol 15, No 1 (2026): APRIL 2026
Publisher : Universitas Bandar Lampung

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Abstract

Abstrak. Aluminium 1100 memiliki ketahanan korosi dan konduktivitas tinggi, namun kekerasan permukaannya relatif rendah (±22 HB). Penelitian ini bertujuan menganalisis pengaruh proses pack carburizing menggunakan arang kayu pada suhu 600°C dengan variasi waktu tahan 2 dan 3 jam terhadap kekerasan Aluminium 1100. Spesimen didinginkan menggunakan oli ISO VG 32 dan diuji dengan metode Brinell (500 kgf, Ø10 mm). Hasil menunjukkan bahwa pemanasan tanpa karbon menurunkan kekerasan hingga ±15 HB akibat rekristalisasi dan pertumbuhan butir. Sebaliknya, perlakuan dengan karbon meningkatkan kekerasan menjadi ±23,33 HB (2 jam) dan ±25 HB (3 jam). Waktu tahan 3 jam menghasilkan nilai kekerasan tertinggi. Proses pack carburizing pada suhu 600°C terbukti mampu meningkatkan kekerasan permukaan Aluminium 1100 secara moderat dibandingkan perlakuan panas tanpa karbon
Experimental Development of a PIC-Based Intelligent Energy Management Controller for Voltage Regulation and Load Prioritization in Standalone Photovoltaic Home Systems Rifki Muhida; Ari Legowo; Muhammad Riza; Erry Y. T. Adesta; Riza Muhida
Journal of Applied Science and Advanced Engineering Vol. 4 No. 2 (2026): JASAE: September 2026
Publisher : Master Program in Mechanical Engineering, Gunadarma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59097/jasae.v4i2.88

Abstract

This paper presents the experimental development and evaluation of a PIC16F877A-based intelligent controller for voltage regulation and load prioritization in standalone photovoltaic (PV) home energy systems. The proposed system integrates a photovoltaic panel, battery storage, inverter, and embedded controller into a unified platform for efficient energy management. The controller continuously monitors battery voltage using an analog-to-digital converter and implements a threshold-based control strategy to disconnect non-critical loads when the voltage drops below 11.7 V. Experimental results show that the PV system maintains stable voltage characteristics within approximately ±3%, while the output current varies significantly with solar irradiance, exhibiting fluctuations of more than 60% under varying environmental conditions. The proposed controller effectively regulates system operation by dynamically managing load distribution, thereby preventing deep battery discharge and improving overall system reliability. In addition, the integration of auxiliary subsystems, such as automatic lighting and motion detection, enhances energy efficiency by reducing unnecessary power consumption. The findings demonstrate that the proposed low-cost PIC-based controller provides a practical and effective solution for intelligent energy management in standalone PV systems, particularly in off-grid residential applications.
Co-Authors Anwar, Muhammad Adam Permana Apriansah, Muhammad Agung Aqshal Roihan Muhammad Irham Ari Legowo Ari Legowo Arizon, Muhammad Aryana, Rifqi Dwi Avicenna Avicenna Azmi, Vio Al Bambang Pratowo Dewi Fitria Erry Y. T. Adesta Erry Yulian T. Adesta Erry Yulian Triblas Adesta Febriyansyah, Rio Handoko Riyanto Harjono Saputro Haryanto, Gedeon Risky Ilhamsyah, Sofyan Indra Surya Intan Nurina Seftiniara Julleo Caecar Onasis Pangihutan Kunarto Muhammad Ilham Miranto Mulyana Mulyana Mulyana Mulyana, Mulyana Pamungkas, Readyn Tri Prasetyo, M Rembagus Prayoga, Gilang Prayoga, Made Ngurah Arya Nanda Priatama, M Restu Rifki Muhida Rifki Muhida Riyanto, Handoko Riza Muhida Satriadi, Satriadi Suherman, Andrian Teng jaya, Roy Harmapa Tia Tanjung Wahid, Firman Nur Wicaksono, Bagus Wijayandi, Afriunus Yanuar Dwi Prastyo Zainab Ompu Jainah Zakaria, Rahmat Zein Muhamad