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All Journal Mekanika: Majalah Ilmiah Mekanika V-MAC (Virtual of Mechanical Engineering Article) IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) eProceedings of Engineering Jurnal Pengabdian Masyarakat dan Riset Pendidikan
Siswantoro, Dwi Heru
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Other

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Procurement and Operation Technical For Meniran (Phyllanthus Niruri) Extraction Equipment Budi Santoso; Fitrian Imaduddin; Heru Sukanto; Joko Triyono; Raymundus Lullus Lambang; Purwadi Joko Widodo; Dwi Heru Siswantoro
Mekanika: Majalah Ilmiah Mekanika Vol 20, No 1 (2021): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v20i1.45487

Abstract

At this time the government prohibits the use of antibiotics in animal feed as a growth promoter (AGP) or antibiotic, so an effective and safe immunomodulator and herbal growth stimulant product are needed through Meniran extract products (Phyllantus niruri) and chemicals in the market are not yet optimal as immunomodulators and growth stimulants. CV. Maxipro Agrosatwa which is engaged in veterinary medicine, wholesale trade of agricultural products, and other live animals will produce feed using Meniran extract products. Extraction equipment that is needed is a Rotary vacuum evaporator. This equipment is needed to separate the solvent from the solute without high heating which will damage the solute content. The vacuum condition in the flask is to make the separation more efficient as well as accelerate the separation of the solvent from a solution by reducing the boiling point. The rotation of the flask is to increase evaporation. The complexity of this equipment is what makes CV. Maxipro Agrosatwa cannot handle it alone and requires technical assistance from the Department of Mechanical Engineering (JTM) FT UNS. Technical assistance provided by JTM FT UNS is in the form of procurement, delivery, installation, operation, and maintenance of the rotary vacuum evaporator.
Instalasi Teknologi Hidroponik sebagai Upaya Pemberdayaan Masyarakat Desa Sukodono dalam Meningkatkan Kemandirian Pangan : Pengabdian Pradiza, Revvan Rifada; Siswantoro, Dwi Heru; Apriandy, Kevin Ilham; Asrofi, Mochamad; Dwilaksana, Dedi; Sutjahjono, Hary; Yani, Luluk Fitri
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.v4i2.3996

Abstract

This community service activity aims to improve the understanding and skills of residents of RT 07, Sukodono Village, Sidoarjo, in applying hydroponic technology as a solution for managing limited land and supporting food security. This activity consists of lectures and discussions, as well as the installation of a hydroponic system. During the lectures and discussions, residents were given an understanding of the basic principles of hydroponics, its benefits, and how to apply it in limited land. Discussions were held to explore more deeply the challenges and potential of applying hydroponics in a household environment. The final stage, the installation of the hydroponic system, involved residents directly in the creation and installation of a simple but effective hydroponic system. Although there was no harvest to report at the time of the activity, residents successfully understood and installed the hydroponic system correctly. This success shows that residents of RT 07, Sukodono Village have the potential to manage hydroponic gardens independently. This activity made a significant contribution to increasing food self-sufficiency at the local level, even though challenges in terms of maintenance and limited resources remain.
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.
Analisis Perbandingan Konsumsi Energi Gedung Delta Plaza Dengan Metode (LCOE) Levelized Cost Of Energy Emanoell Dave Keshan Sinanu; Silvi Istiqomah; Dwi Heru Siswantoro
eProceedings of Engineering Vol. 12 No. 6 (2025): Desember 2025
Publisher : eProceedings of Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstrak — Kebutuhan energi listrik yang tinggi pada bangunan komersial seperti pusat perbelanjaan menyebabkan biaya operasional yang besar dan ketergantungan penuh pada sumber energi konvensional. Gedung Delta Plaza Surabaya, sebagai salah satu pusat perbelanjaan besar hingga saat ini masih sepenuhnya bergantung pada pasokan listrik dari PLN. Penelitian ini bertujuan untuk menganalisis potensi penghematan energi dan biaya melalui penerapan sistem Pembangkit Listrik Tenaga Surya (PLTS), serta mengevaluasi kelayakannya dengan pendekatan Levelized Cost of Energy (LCOE). Metode yang digunakan melibatkan konversi konsumsi energi tahunan menjadi kapasitas PLTS, perhitungan investasi, produksi energi, hingga proyeksi ekonomi jangka panjang. Hasil menunjukkan bahwa sistem PLTS dengan kapasitas 4.622,102 kWp mampu menghasilkan 7 juta kWh per tahun dengan LCOE sebesar Rp 425,82/kWh, lebih rendah dibandingkan tarif PLN Rp 1.035,78/kWh. Potensi penghematan mencapai 58,9% atau sekitar Rp 4,69 miliar per tahun dengan waktu pengembalian modal sekitar 11 tahun 7 bulan. Kesimpulan pada penelitian ini sistem PLTS dinilai layak secara teknis dan ekonomis untuk diterapkan sebagai strategi efisiensi energi jangka panjang. Kata kunci— Delta Plaza, Energi terbarukan, Efisiensi energi, Levelized Cost of Energy (LCOE), PLTS.
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.
Kekuatan Tarik dan Biodegradabilitas Biokomposit PVA berpengisi Serbuk Kulit Kacang Tanah sebagai Separator Baterai Revvan Rifada Pradiza; Juniar Maulana Soliwi Putra; Silvi Istiqomah; Dwi Heru Siswantoro; Alfi Hasan; Mochamad Asrofi; Yayang Permadi; Deny Tomy Andrianto; Ananda Yuman Hardiansyah
Virtual of Mechanical Engineering Article Vol 11 No 1 (2026): V-MAC
Publisher : Prodi Teknik Mesin Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/v-mac.v11i1.7628

Abstract

Penelitian ini bertujuan untuk mengkaji pengaruh penambahan serbuk kulit kacang tanah terhadap sifat mekanik dan biodegradabilitas biokomposit berbasis Polyvinyl Alcohol (PVA) yang memiliki potensi aplikasi sebagai separator baterai. Biokomposit dibuat dengan penambahan pengisi serbuk kulit kacang tanah sebesar 0%, 2%, 4%, dan 6%, yang dicampurkan dengan matriks PVA menggunakan metode solution casting. Pengujian kekuatan tarik dilakukan sesuai dengan standar ASTM D882, sementara pengujian biodegradabilitas menggunakan ASTM D6003-96. Hasil penelitian menunjukkan bahwa penambahan serbuk kulit kacang tanah meningkatkan kekuatan tarik biokomposit seiring bertambahnya fraksi pengisi. Biokomposit dengan 6% serbuk kulit kacang tanah menghasilkan kekuatan tarik maksimum sebesar 5,67 MPa. Hasil ini dibuktikan dengan hasil penyerapan kelembaban pada penambahan 6% serbuk kulit kacang tanah yang memiliki hasil terendah, sehingga gugus O-H yang terbebas berkurang. Selain itu, hasil uji biodegradasi menunjukkan bahwa semakin tinggi serbuk kulit kacang tanah, semakin besar pula laju degradasi biokomposit, dengan penurunan berat tertinggi sebesar 62,70% pada sampel dengan 6% pengisi setelah 15 hari penguburan. Temuan ini menunjukkan bahwa serbuk kulit kacang tanah berpotensi meningkatkan sifat mekanik dan biodegradabilitas biokomposit, menjadikannya alternatif ramah lingkungan untuk bahan separator baterai
Co-Authors Alfi Hasan Ananda Yuman Hardiansyah Andrianto, Deny Tomy APRIANDY, KEVIN ILHAM Budi Santoso Dedi Dwilaksana Deny Tomy Andrianto Emanoell Dave Keshan Sinanu Fitrian Imaduddin Hary Sutjahjono Hasan, Alfi Heru Sukanto Joko Triyono Juniar Maulana Soliwi Putra Mochamad Asrofi Muhammad Yusuf Permadi, Yayang Pradiza, Revvan Rifada Purwadi Joko Widodo Ramadhana, Firnanda Risky Raymundus Lullus Lambang Sari, Sekar Silvi Istiqomah Silvi Istiqomah Yani, Luluk Fitri Yayang Permadi Yusvida, Rizka