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All Journal Journal of Applied Engineering and Technological Science (JAETS) Buletin Utama Teknik
Junaidi Junaidi
Universitas Harapan
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Industrial & Manufacturing Engineering

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Development of Potato-Derived Carbon Nanofibers as Sustainable Moisture-Regulating Supporting Layers for Photovoltaic Modules Indri Dayana; Habib Satria; Nidya Chitraningrum; Mega Puspita Sari; Tino Hermanto; Yopan Rahmad Aldori; Dadan Ramdan; Syofyan Anwar Syahputra; Dina Maizana; Moranain Mungkin; Junaidi Junaidi; Ade Irma Sagala; Siti Utari Rahayu
Journal of Applied Engineering and Technological Science (JAETS) Vol. 7 No. 2 (2026): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v7i2.9175

Abstract

Moisture-induced degradation remains a critical reliability issue in photovoltaic (PV) modules, particularly in humid tropical climates. While biomass-derived carbon materials have been widely investigated for electrochemical applications, their use as functional supporting layers in PV modules remains limited. This study develops potato-derived carbon nanofibers through moderate-temperature carbonization (700 °C, N₂ atmosphere) followed by electrospinning. Structural and chemical properties were evaluated using XRD, FTIR, Raman spectroscopy, and BET surface area analysis. Morphology and fiber diameter distribution were examined via SEM. Electrical conductivity was measured using a four-point probe method. Water vapor permeability (WVP) and biodegradation behavior were assessed to evaluate durability and moisture regulation capability. The synthesized material exhibits predominantly amorphous turbostratic carbon with characteristic D and G Raman bands (ID/IG ≈ 0.92), specific surface area of 186 ± 12 m²/g, and electrical conductivity of 3.8 ± 0.4 S/m. Nanofiber diameters range from 72–108 nm (mean ± SD). Controlled WVP (3200–4100 mg/day/L) and moderate biodegradability (8–12% mass loss over 14 days) indicate balanced vapor diffusion and structural integrity. The results demonstrate the feasibility of potato-derived carbon nanofibers as sustainable moisture-regulating supporting layers in photovoltaic modules.
PERAWATAN SISTEM PGMFI (PROGRAMED FUEL INJECTION) SEPEDA MOTOR HONDA CBR150R (CITY BIKE RACING) DENGAN MENERAPKAN PERAWATAN PREVENTIVE MAINTENANCE Fadhil Ali Siahaan; Junaidi Junaidi; Din Aswan A Ritonga
Buletin Utama Teknik Vol 21, No 1 (2025): Edisi September
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/but.v21i1.12142

Abstract

Tujuan penelitian ini adalah untuk melihat hasil analisis perawatan sistem pgm fi (programed fuel injection) sepeda motor honda cbr150r (city bike racing) dengan menerapkan perawatan preventive maintenance. Metode yang digunakan adalah dengan eksperimen yang dilakukan pada sepeda motor Honda CBR150R. Dalam eksperimen tersebut ditampilkan beberapa grafik hasil perawatan sistem PGM FI pada sensor sensor yang ada pada sistem tersebut, tekanan pompa dan tegangan baterai . Data yang diambil dalam eksperimen tersebut yaitu di1500rpm,2000rpm,2500rpm,3000rpm,3500rpm, 4000 rpm, 4500 rpm, 5000 rpm, 5500 rpm, 6000 rpm, 6500 rpm dan 7000 rpm. Hasil Pengambilan Data Tekanan Pompa Injeksi sepeda motor Honda CBR150R menunjukkan hasil Tekanan yang standart yaitu 290 kPa, bahkan di rpm tertingginya yaitu 7000 rpm melebihi dari tekanan standart tembus hingga398 kPa.
ANALISA PERFORMA SEPEDA MOTOR PCX 150 INJEKSI STANDARD DENGAN PCX 150 INJEKSI MENGGUNAKAN HYBIRD SYSTEM PARALLEL DAN MOTOR ASSIST BERBAHAN BAKAR PERTAMAX DENGAN MENERAPKAN PERAWATAN PREVENTIVE MAINTENANCE Junaidi Junaidi; Yulfitra Yulfitra; Aditya Agung Pradipta
Buletin Utama Teknik Vol 21, No 1 (2025): Edisi September
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/but.v21i1.12145

Abstract

Tujuan penelitian ini adalah untuk menganalisis Analisa Performa Sepeda Motor Pcx 150 Injeksi Standard Dengan Pcx 150 Injeksi Menggunakan Hybird System Parallel Dan Motor Assist Berbahan Bakar Pertamax Dengan Menerapkan Perawatan Preventive Maintenance, Metode yang digunakan adalah eksperimen yang dilakukan pada Motor Honda PCX 150 FI. Torsi engine yangdihasilkan oleh motor Honda PCX 150 F1 lebih besar dengan menggunakan Hybrid yaitu 18,4 Nm pada putaran engine 6000 rpm, sedangkan Torsi engine terendahyaitu 8,3 Nm pada putaran engine 2000 rpm menggunakan bahan bakar Pertmax. Daya engine yang dihasilkan oleh motor Honda PCX 150 F1 lebih besar dengan menggunakan Hybrid yaitu 11,8 hp pada putaran engine 6000 rpm, sedangkan Daya engine terendah yaitu 1,8 hp pada putaran engine 2000 rpm menggunakan bahan bakar Pertamax.
Co-Authors Ade Irma Sagala Aditya Agung Pradipta Dadan Ramdan Din Aswan A Ritonga Dina Maizana Fadhil Ali Siahaan Habib Satria Indri Dayana Mega Puspita Sari Moranain Mungkin Nidya Chitraningrum Siti Utari Rahayu Syofyan Anwar Syahputra Tino Hermanto Yopan Rahmad Aldori Yulfitra Yulfitra