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All Journal Jurnal Bahan Alam Terbarukan Rekayasa Mesin Jurnal Teknik Mesin Masyarakat: Jurnal Pengabdian Jurnal Pengabdian Kepada Masyarakat Jurnal Bahan Alam Terbarukan
Moch Wisnu Arif Sektiono
Politeknik Negeri Malang
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Surface Evaluation of Tricalcium Phosphate Bioceramic Coating on SS-316L by Electrophoretic Deposition Hermana, Gita Novian; Nugraha, Dhion Khairul; Nadi, Muhammad Rizki Gorbyandi; Sektiono, Moch. Wisnu Arif; Mayello, Randy Mediawan; Farhan, Miftah; Kusuma, Nirmala Cahya; Alfayed, Naufal Alden; Rizqi, Fauzi Muhamad
Jurnal Bahan Alam Terbarukan Vol 13, No 1 (2024): June 2024 [Nationally Accredited Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v13i1.49639

Abstract

The development of orthopedic implant materials has become an important topic of discussion lately. The SS-316L alloy is widely used as an implant material due to its relatively low cost, corrosion resistance, and ease of production. However, metal alloys, especially SS-316L, are prone to ion release into the blood over time. Therefore, TCP or tricalcium phosphate [Ca3(PO4)2] is needed to coat the surface of SS-316L, preventing ion release into the blood and enhancing the biocompatibility of the implant material. In this study, TCP coating was applied to the SS-316L substrate using the electrophoretic deposition technique. The influence of deposition time on changes in microstructure and mechanical properties is the main focus of this study. The results of the coating technique indicate that the deposition yield increases with the deposition time. Morphological testing results show that increasing deposition time improves coating quality by increasing the thickness of the coating layer and preventing layer peeling. The coating process also reveals the accumulation of layers in certain areas and the formation of thin layers in other regions. A deposition time of 30 minutes results in a coating thickness ranging from 48.7 to 57.9 µm. Hardness testing, conducted with indentation loads of 50, 100, and 300 gf, indicates that longer deposition times and higher indentation loads during hardness testing result in reduced material hardness.
DESIGN OPTIMIZATION OF BREAD-BAKING OVEN CHAMBER: A COMPUTATIONAL FLUID DYNAMICS (CFD) APPROACH TO THE TEMPERATURE DISTRIBUTION Sektiono, Moch. Wisnu Arif; Wahyu, Mujahid; Halimi, Ahmad Dzulfikri; Hendarti , Devina Rosa; Cahyono, Hiding
Jurnal Rekayasa Mesin Vol. 16 No. 3 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

This paper presents a Computational Fluid Dynamics (CFD) simulation of a bread oven under steady-state conditions. An experimental measurement methodology was performed to determine the temperature distribution characteristics in the oven chamber. The CFD model simulation of the bread oven shows a homogeneous temperature distribution. Using a numerical model validated against experimental measurements, it is possible to highlight the temperature distribution pattern in the oven chamber and understand how the temperature spreads in a conductive air medium. Using data from experimental tests and CFD simulations, observations were made on temperature variations for 100, 110 and 120 in the oven chamber. The temperature for the oven chamber is distributed for a homogeneous distribution, with the temperature being 120 °C in both measurement and simulation. The lowest flow velocity is ~ 1.1 m/s, which is indicated by the light blue colour on the oven rack, and the highest velocity is ~ 4 m/s.
ANALISIS KARAKTER MIKROSTRUKTUR PERMUKAAN DAN TENSILE SS304 PADA PENGELASAN SMAW DENGAN ARUS 85 AMPERE: ANALYSIS OF MICROSTRUCTURE AND TENSILE PROPERTIES OF SS304 UNDER SMAW WELDING AT 85 AMPERE Hanif Ridhwanul Majid; Moch Wisnu Arif Sektiono,S.Si., M.Si.; Setiyo Rojikin, S.T., M.T.
Jurnal Teknik Mesin Vol. 5 No. 1 (2026): JURNAL TEKNIK MESIN
Publisher : Mechanical Engineering Department Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v5i1.8600

Abstract

This study aims to analyze the crystal structure changes on Stainless Steel 304 (SS304) metal surface welded using Shielded Metal Arc Welding (SMAW) method at 85 Ampere current. SS304 material with specific thickness was welded using Nikko Steel NSN-308 electrode with 2.6 mm diameter. Tensile test specimens were prepared according to ASTM E8 standard with single V groove joint design (60° angle, 2 mm gap). Tensile testing results showed average Ultimate Tensile Strength (UTS) of 589.35 MPa, and Yield Strength (YS) of 354.48 MPa. Metallographic analysis using optical microscope identified three distinct zones: base metal with uniform polygonal δ-ferrite and γ-austenitee grain structure, Heat Affected Zone (HAZ) with grain enlargement and partial recrystallization, and weld metal with dendritic structure due to cooling. process. The research results indicate that SMAW welding process at 85 Ampere causes significant microstructural changes, where γ-austenitee crystal structure stability and grain size and shape variations become the main factors affecting material mechanical properties.
EFISIENSI PENGERINGAN DAUN TEMBAKAU DENGAN OVEN PENGERING PADA KELOMPOK TANI KENDALBULUR TULUNGAGUNG Mujahid Wahyu; Deni Setiawan; Ahsin Fahmi Mubarok; Muhammad Yunus; Ahmad Dzulfikri Halimi; Moch Wisnu Arif Sektiono
Masyarakat: Jurnal Pengabdian Vol. 3 No. 1 (2026)
Publisher : Yayasan Pendidikan Dan Pengembangan Harapan Ananda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58740/m-jp.v3i1.629

Abstract

Tembakau merupakan komoditas agriculture global yang dibudidayakan di kawasan tropis, serta memiliki peran penting dalam mendukung perekonomian masyarakat. Kelompok Tani “Tani Makmur” Kendalbulur, Tulungagung, Jawa Timur yang memproduksi sekitar 2 ton daun tembakau setiap kali panen mengalami penyusutan harga jual mencapai  30% yang disebabkan oleh sistem pengeringan tembakau yang masih konvensional dengan sistem sun curing. Cuaca yang tidak menentu mengakibatkan waktu pengeringan menjadi lebih dari 3 hari dan hasilnya banyak yang busuk. Tujuan dari  program pengabdian masyarakat ini untuk menerapkan teknologi oven pengering dalam proses pengeringan daun tembakau. Metode pelaksanaan meliputi pembuatan teknologi oven pengering, pendampingan penggunaan oven pengering dan evaluasi hasil proses pengeringan dengan teknologi yang dirancang. Teknologi oven pengering daun tembakau menggunakan pemanas coil heater listrik berkapasitas 300 watt dengan 4 rak susun yang berdimensi 1100 x 600 mm. Sirkulasi udara di dalam oven dibantu dengan sirkulasi paksa dari blower axial 12V/220. Penggunaan oven pengering mengingkatkan efisiensi karena mampu mengeringkan daun tembakau dalam waktu 4 jam di kisaran suhu 40°C dengan hasil yang tidak jauh berbeda dengan metode pengeringan sun curing.
STRATEGI PENGEMBANGAN WISATA SUMBER SIRAH DENGAN PEMBUATAN SPOT FOTO PADA BUMDES KERKEP MANDIRI Ahmad Dony Mutiara Bahtiar; Fitria Nur Hamidah; Saiful Arif; Ahmad Dzulfikri Halimi; Moch. Wisnu Arif Sektiono; Zulfa Khalida
JURNAL PENGABDIAN KEPADA MASYARAKAT Vol. 6 No. 2 (2026): Jurnal Pengabdian kepada Masyarakat
Publisher : LPPM Universitas Kahuripan Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51158/736czp80

Abstract

Sektor pariwisata memegang peranan krusial dalam menggerakkan perekonomian perdesaan. BUMDES Kerkep Mandiri selaku pengelola Wisata Air Sumber Sirah di Kabupaten Kediri menghadapi kendala penurunan jumlah pengunjung sebesar 25% pada tahun 2024 akibat ketatnya persaingan pariwisata alam dan minimnya diferensiasi produk. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk mengimplementasikan strategi diversifikasi produk dan pemasaran pariwisata melalui optimalisasi lahan pasif menjadi wahana spot foto sebagai instrumen promosi visual. Metode pelaksanaan kegiatan menerapkan pendekatan pemberdayaan partisipatif (Participatory Community Development) yang terdiri dari tiga tahapan sistematis: persiapan melalui Focus Group Discussion (FGD), pelaksanaan pembangunan infrastruktur komplementer berbasis transfer teknologi, serta evaluasi dampak (before-after analysis). Hasil intervensi menunjukkan keberhasilan pengadaan wahana spot foto terintegrasi yang berfungsi ganda sebagai fasilitas rekreasi dan pemicu promosi digital. Secara kuantitatif, evaluasi komparatif mencatat dampak positif berupa lonjakan volume kunjungan wisatawan rata-rata sebesar 81,43%, yaitu dari rata-rata 350 pengunjung menjadi 635 pengunjung per bulan. Selain itu, tingkat kepuasan pengelola BUMDES (skor 4,75 dari 5,00) dan kepuasan pengunjung (skor 4,47 dari 5,00) membuktikan efektivitas program secara menyeluruh. Implikasi kegiatan ini menegaskan bahwa strategi inovasi fasilitas visual ramah lingkungan mampu memicu promosi organik secara masif dan meningkatkan keberdayaan ekonomi kelembagaan desa.   Abstract  The tourism sector plays a crucial role in driving rural economies. BUMDES Kerkep Mandiri, as the manager of Sumber Sirah Water Tourism in Kediri Regency, faced a 25% decline in visitor numbers in 2024 due to intense competition in nature-based tourism and a lack of product differentiation. This community service activity aims to implement product diversification and tourism marketing strategies by optimizing passive land into a photo spot destination that serves as a visual promotion instrument. The method applied a participatory community development approach consisting of three systematic stages: preparation through Focus Group Discussions (FGD), implementation of complementary infrastructure construction based on technology transfer, and impact evaluation (before-after analysis). The intervention results demonstrated the successful provision of an integrated photo spot that serves a dual purpose as a recreational facility and a digital promotion trigger. Quantitatively, the comparative evaluation recorded a positive impact with an 81.43% surge in tourist volume, increasing from an average of 350 to 635 visitors per month. Furthermore, high satisfaction index scores from both the BUMDES management (4.75 out of 5.00) and visitors (4.47 out of 5.00) confirm the comprehensive effectiveness of the program. The implication of this activity underscores that eco-friendly visual facility innovation strategies can effectively trigger massive organic promotion and enhance the economic empowerment of village institutions.  
Transformation of Biogenic Calcium Carbonate from Waste Eggshells into Hydroxyapatite: A Comparative Study on Crystallographic Characteristics Agus Jatmiko; Rani Nopriyanti; Dewi Idamayanti; Moch. Wisnu Arif Sektiono; Gita Novian Hermana
Jurnal Bahan Alam Terbarukan Vol. 15 No. 1 (2026): June 2026 [Nationally Accredited Sinta 3]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v15i1.39698

Abstract

Hydroxyapatite (HAp) is a calcium phosphate–based biomaterial that has been widely applied in biomedical fields due to its excellent bioactivity and biocompatibility. In this study, HAp was synthesized using a wet chemical precipitation method by utilizing eggshell waste as a calcium source, aiming to develop a sustainable and cost-effective synthesis route. The synthesized products were investigated under two different conditions, namely without calcination and with calcination at 900 °C, in order to evaluate the effect of thermal treatment on the structural and microstructural characteristics of HAp. Phase formation and crystal structure were analyzed using X-ray diffraction (XRD), while surface morphology and elemental composition were examined using scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS). XRD results confirmed the formation of hydroxyapatite with a hexagonal crystal structure, and calcination treatment led to sharper diffraction peaks, indicating an improvement in crystallinity. SEM observations revealed that the synthesized HAp particles exhibited irregular shapes with a tendency to agglomerate, which is commonly observed in HAp produced via wet chemical precipitation. EDS analysis verified the presence of the main constituent elements, Ca, P, and O, with a Ca/P atomic ratio of 1.67, which is in good agreement with the theoretical stoichiometric value of hydroxyapatite. Crystallite size was evaluated using several XRD-based methods, including the Scherrer, Monshi-Scherrer, Williamson-Hall, Size-Strain Plot, and Halder-Wagner approaches. The calculated crystallite sizes were found to be within the nanometer scale, with variations depending on the assumptions and principles of each method. Overall, the results demonstrate that wet chemical precipitation using eggshell-derived calcium is an effective approach for producing hydroxyapatite with favorable structural and microstructural properties.
Co-Authors Agus Jatmiko Ahmad Dony Mutiara Bahtiar Ahmad Dzulfikri Halimi Ahsin Fahmi Mubarok Alfayed, Naufal Alden Deni Setiawan Devina Rosa Hendarti Dhion Khairul Nugraha Farhan, Miftah fitria nur hamidah Gita Novian Hermana Hanif Ridhwanul Majid Hiding Cahyono Idamayanti, Dewi Kusuma, Nirmala Cahya Mayello, Randy Mediawan Muhammad Yunus Mujahid Wahyu Nadi, Muhammad Rizki Gorbyandi Rani Nopriyanti Rizqi, Fauzi Muhamad Saiful Arif Setiyo Rojikin Zulfa Khalida