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All Journal Multitek Indonesia : Jurnal Ilmiah IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Jurnal Pengabdian Masyarakat dan Riset Pendidikan
Permadi, Yayang
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Other

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Desain dan Evaluasi Struktur Sasis Kendaraan Listrik Roda Tiga Menggunakan Metode Elemen Hingga: Penelitian Permadi, Yayang; Siswantoro, Dwi Heru
Jurnal Pengabdian Masyarakat dan Riset Pendidikan Vol. 4 No. 2 (2025): Jurnal Pengabdian Masyarakat dan Riset Pendidikan Volume 4 Nomor 2 (October 202
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jerkin.v4i2.4113

Abstract

The chassis is the main structure that supports the entire load of a vehicle, making static strength evaluation essential in the development of three-wheeled electric vehicles. This study aims to design and analyze a chassis structure made of aluminum alloy 6061-T6 using the Finite Element Method (FEM) in ANSYS Workbench software. The simulation was carried out under vertical loads ranging from 0 – 600 kg, equivalent to forces of 0 – 5884 N. The analyzed parameters included equivalent stress (Von-Mises), total deformation, and safety factor (FoS). The simulation results show that maximum stress increased from 20.96 MPa under no load to 285.71 MPa under an overloading condition of 600 kg. Maximum deformation reached 7.25 mm, while the FoS decreased from 3.95 at no load to 0.29 at 600 kg. The FoS values of less than 1, even under the normal load of 200 kg, indicate that the initial chassis design does not meet safety criteria. This study highlights the necessity of design modification, particularly in the front cross members, to ensure that the chassis structure can safely withstand operational loads.
DESAIN DAN MODIFIKASI STRUKTUR SASIS KENDARAAN LISTRIK RODA TIGA UNTUK PENINGKATAN FAKTOR KEAMANAN MENGGUNAKAN METODE ELEMEN HINGGA permadi, yayang; Pradiza, Revvan Rifada; Juliarsyah, Moh. Rizanto
MULTITEK INDONESIA Vol 19 No 2 (2025): Desember
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/mtkind.v19i2.12439

Abstract

This study aims to design and evaluate the chassis structure of a three-wheeled electric vehicle with a focus on improving the factor of safety (FoS) through geometric and material modifications. A three-dimensional model was developed using SolidWorks, while numerical analysis was conducted with the finite element method in ANSYS Workbench. Static loading scenarios were applied in the range of 0–600 kg, with load points positioned at the driver and cargo sections. The initial design showed an FoS value of less than 1 under a 200 kg load, indicating that it did not meet the safety criteria. The first modification, involving the addition of a base plate and reinforcements to the front cross members, increased the FoS to 1.02. A second modification, which included material adjustments and reinforcement of the cargo base, further improved the FoS to 1.29 while reducing the maximum stress by up to 33% compared to the initial design. These findings highlight that a combination of structural reinforcement strategies and appropriate material selection can significantly enhance chassis performance and achieve an acceptable safety level.
Sifat Mekanik dan Biodegradabilitas Biokomposit Berbasis Polyvinyl Alcohol dan Pati Kentang dengan Pennisi Serbuk Kulit Lemon Pradiza, Revvan Rifada; Ramadhana, Firnanda Risky; Yusuf, Muhammad; Asrofi, Mochamad; Permadi, Yayang; Siswantoro, Dwi Heru; Andrianto, Deny Tomy; Hasan, Alfi
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.335

Abstract

This study aims to examine the mechanical properties, surface morphology, and biodegradability of polyvinyl alcohol-potato starch biocomposites with lemon peel powder as a filler. The biocomposites were produced by solution casting with 1%, 2%, and 3% fillers of lemon peel powder. Mechanical properties were tested to determine tensile strength in accordance with ASTM D882. The addition of lemon peel powder increased tensile strength as the percentage content increased. The highest tensile strength was 4.82 MPa in polyvinyl alcohol-potato starch biocomposites containing 3% lemon peel powder. This indicates that lemon peel powder effectively improves bonding with the matrix and produces stronger interfacial bonds. However, the flexibility of the biocomposites decreased with increasing lemon peel powder content, as indicated by a decrease in elongation. Furthermore, the biodegradation of the biocomposites showed that the biocomposite with the highest lemon peel powder content (3%) exhibited the fastest degradation rate, reaching 65.22% after 15 days of testing. These results indicate that the presence of lemon peel powder improves the mechanical properties of the biocomposite without reducing its biodegradability. These findings indicate that biocomposites made from polyvinyl alcohol and potato starch with lemon peel powder are a promising sustainable plastic alternative, combining strength, flexibility, and degradability.
Pengaruh Variasi Suhu Kondensor terhadap Kinerja Rotary Vacuum Evaporator pada Ekstraksi Meniran (Phyllanthus Niruri) Siswantoro, Dwi Heru; Permadi, Yayang; Pradiza, Revvan Rifada; Sari, Sekar; Yusvida, Rizka
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.336

Abstract

This study analyzes the effect of condenser temperature variation on the performance of a rotary vacuum evaporator (RVE) in extracting Phyllanthus niruri solution. Three condenser conditions, 23 °C, 30 °C, and without cooling, were tested, each with five replications. Observed parameters included evaporation time, mass reduction rate, energy consumption, and flavonoid content, which were analyzed statistically using Analysis of Variance (ANOVA). Results showed that the 23 °C condenser achieved the highest mass reduction rate (3.78 g/min) and the lowest energy consumption (0.14 kWh). At 30 °C and without cooling, mass reduction rates decreased to 3.02 g/min and 2.24 g/min, while energy consumption rose to 0.19 kWh and 0.20 kWh. The 23 °C condenser also produced the highest flavonoid content (11.9 mg/mL), confirming optimal thermal efficiency. This work fills the research gap on the effect of condenser temperature on energy efficiency and extract quality in RVE systems and provides a basis for developing energy-efficient evaporators for small-scale herbal industries.
Co-Authors Andrianto, Deny Tomy Hasan, Alfi Juliarsyah, Mohammad Rizanto Mochamad Asrofi Muhammad Yusuf Pradiza, Revvan Rifada Ramadhana, Firnanda Risky Sari, Sekar Siswantoro, Dwi Heru Yusvida, Rizka