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All Journal Turbo : Jurnal Program Studi Teknik Mesin Sebatik Jurnal Mesin Nusantara Indonesian Journal of Innovation Studies PELS (Procedia of Engineering and Life Science) Procedia of Social Sciences and Humanities Innovative Technologica: Methodical Research Journal Indonesian Journal of Microbiology Journal of Aerospace Systems and Engineering Innovations
Fahruddin, A’rasy
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Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Analysis of Anaerobic Digestion Installation Testing for Tofu Liquid Waste Utilization into Biogas with the Addition of Cow Manure Variations Purboyo, Prido Dwi; Fahruddin, A’rasy
Indonesian Journal of Microbiology Vol. 1 No. 1 (2024): April
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/ijm.v1i1.2472

Abstract

The purpose of this study is to convert tofu wastewater into biogas using an anaerobic digester with varying cow dung mixtures (10%, 15%, and 20%). The study method entails creating digesters including independent, dependent, and controlled variables. Variations in pH, temperature, biogas pressure, and biogas volume were detected throughout the course of a 15-day fermentation. The data show that in the 10% fluctuation, the greatest pH was on day 7 (7), whereas the highest temperature was 32°C on days 6 and 7. Biogas pressure emerged on day 6 (89.2 cmHg), resulting in a volume of 90 liters by day 15. In the 15% variation, the highest pH (7.2) occurred on day 8, with the highest temperature (34°C) on days 9 and 10. Biogas pressure began on day 5 (89.9 cmHg), with a biogas volume of 95 liters on day 15. The 20% variance resulted in the highest pH (7.4) on day 8 and the highest temperature of 35°C from days 9-11. Biogas pressure began on day 5 (90.7 cmHg), resulting in a biogas volume of 100 liters on day 15. This study sheds light on how to manage tofu waste into biogas with varying degrees of effectiveness and efficiency.
Pengaruh Proses Underwater Friction Stir Welding Terhadap Kekerasan dan Kekasaran pada Paduan Aluminium AA6005-T6: Investigasi Eksperimental Yulianto, Mochammad; Mulyadi; Fahruddin, A’rasy
Journal of Aerospace Systems and Engineering Innovations Vol. 1 No. 1 (2025): October
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jasei.v1i1.4949

Abstract

Underwater Friction Stir Welding Terhadap Kekerasan dan Kekasaran pada Paduan Aluminium Seri AA6005:T6 Underwater Friction Stir Welding (UFSW) adalah metode pengelasan inovatif yang menawarkan keunggulan potensial dalam produksi dan kualitas sambungan paduan aluminium. Tujuan penelitian ini adalah menganalisis dampak feeding dalam proses end milling surface terhadap tingkat kekasaran, dengan tujuan menentukan parameter feeding yang dapat menghasilkan kekasaran optimal. Metode yang diterapkan adalah eksperimental. Variabel bebas dalam penelitian ini melibatkan variasi feeding dengan nilai 10 mm/min, serta tiga variasi material yang memiliki tingkat kekerasan yang berbeda. Variabel yang diamati adalah tingkat kekasaran sebagai variabel terikat, sementara variabel kontrol yang diatur adalah depth of cut sebesar 0,5 mm dan kecepatan spindle sebesar 2200 RPM. Hasil penelitian menunjukkan bahwa kecepatan rotasi, kecepatan pengelasan dan tekanan pemadatan memiliki pengaruh segnifikan terhadap kekerasan dan kekasaran sambungan. ari hasil penelitian ini mendapatkan nilai kekerasan 51,6HV dan hasil dari uji kekasaran mendapatkan nilai 2374 RA.
Pengaruh Kecepatan Putaran Rotor terhadap Variasi Saw Blade Type D dan Td pada Cutting Machine Jenis P160 terhadap Hasil Potongan Pipa PVC Nurrochman, Mochammad; Fahruddin, A’rasy
Journal of Aerospace Systems and Engineering Innovations Vol. 1 No. 1 (2025): October
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jasei.v1i1.4951

Abstract

Saw blade merupakan alat yang digunakan sebagai alat potong, untuk kasus ini diaplikasikan pada material pipa pvc. Diaplikasikan pada mesin potong type SICA P160. Untuk mendapatkan hasil potongan serta pemotongan yang efisien maka dianalisa pengaruh kecepatan rotor dan variasi saw blade untuk mendapatkan hasil yang optimal untuk memenuhi harapan pelanggan dan mitra usaha. Untuk mendapatkan hasil yang optimal maka dibuatlah simulasi dengan penelitian mengenai saw blade terkait. Untuk mendukung penelitian ini maka dibuktikan dengan alat ukur kekasaran (Roughness taster).
Analisis Pengaruh Variasi Bentuk Sudden Enlargement terhadap Head Loss pada Aliran Udara Laminar Wibisono, Satria Agung; Akbar, Ali; Fahruddin, A’rasy; Firdaus, Rachmat; Syahril, Muhammad
Jurnal Mesin Nusantara Vol 8 No 2 (2025): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v8i2.24788

Abstract

Fenomena sudden enlargement pada sistem perpipaan merupakan salah satu penyebab utama terjadinya head loss yang dapat menurunkan efisiensi aliran fluida. Penelitian ini bertujuan untuk menganalisis pengaruh variasi bentuk sudden enlargement terhadap kehilangan energi pada aliran fluida laminar dengan menggunakan tiga variasi geometri, yaitu Square Edge, Rounded Edge, dan Projecting Edge. Pengujian dilakukan pada pipa berbahan akrilik menggunakan manometer U sebagai alat ukur tekanan dengan dua titik pengukuran, masing-masing pada diameter 12,7 mm dan 50 mm. Dua tingkat laju aliran udara diuji, yaitu 6 L/menit dan 4 L/menit. Data tekanan yang diperoleh diolah untuk menghitung kecepatan aliran dan head loss menggunakan persamaan dasar fluida. Hasil penelitian menunjukkan bahwa bentuk geometri memiliki pengaruh signifikan terhadap besarnya head loss. Pada laju aliran tinggi (6 L/menit), geometri Square Edge menghasilkan head loss terendah, sedangkan Rounded Edge memberikan performa optimal pada laju aliran rendah (4 L/menit). Geometri Projecting Edge secara konsisten menghasilkan head loss tertinggi pada kedua kondisi. Temuan ini menunjukkan bahwa pemilihan geometri sudden enlargement harus disesuaikan dengan kondisi operasi sistem. Penelitian ini diharapkan dapat menjadi referensi dalam perancangan instalasi perpipaan yang lebih efisien dan mendukung optimasi energi pada sistem transportasi fluida.
Analisis Distribusi Kecepatan Fluida pada Daerah Boundary Layer di dalam Pipa Lurus Secara Eksperimental Barafi, Keigant Abdullah; Akbar, Ali; Fahruddin, A’rasy; Firdaus, Rachmat
Jurnal Mesin Nusantara Vol 8 No 2 (2025): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v8i2.24789

Abstract

Boundary layer adalah lapisan batas yang terbentuk akibat gesekan antara permukaan penampang dan fluida, sehingga terjadi gradiensi kecepatan. Penelitian ini mengamati gradiensi kecepatan fluida pada boundary layer dalam pipa lurus menggunakan metode eksperimental. Distribusi kecepatan fluida diukur menggunakan pipa akrilik berdiameter 1” dan jarum tumpul berdiameter 1,5 mm yang menyerupai tabung pitot dengan sistem perbedaan tekanan stagnasi dan tekanan statis. Fluida dengan berbagai viskositas dan laju aliran diuji untuk memahami pengaruhnya terhadap karakteristik lapisan batas. Dengan flowrate 10 liter/menit menunjukkan hasil pengukuran kecepatan fluida meningkat seiring bertambahnya jarak radial pada dinding pipa mulai dari =2 mm (0,334 m/s), =5,5 mm (0,341 m/s), =7,5 mm (0,425 m/s), =10,5 mm (0,438 m/s), dan pada =12,7mm (0,443 m/s). Kecepatan tertinggi tercatat di titik tengah pipa yang membuktikkan bahwa hasilnya sesuai dengan karakteristik boundary layer, di mana gaya gesekan dan viskositas berkurang.
Innovation of Automatic Anti-Freezing Batik Wax Filtering Technology for the Revitalization of Sustainable Batik Entrepreneurship Based on Intellectual Property IDD000075738 Widiana, Muslichah Erma; Adityo, R Dimas; Fahruddin, A’rasy; Sugianto, Herman
Sebatik Vol. 29 No. 2 (2025): December 2025
Publisher : STMIK Widya Cipta Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46984/sebatik.v29i2.2684

Abstract

Traditional batik enterprises in Indonesia face major challenges in sustaining productivity, efficiency, and global competitiveness. One key issue is the manual filtering of batik wax (malam), which often causes clogging and solidification, disrupting production and reducing batik quality. This research introduces an Automatic Anti-Clog Batik Wax Filtering Technology as an innovative solution for revitalizing sustainable batik entrepreneurship, registered under Industrial Design Intellectual Property IDD000075738. The study aims to develop a practical technology that automatically filters batik wax, maintains an ideal temperature, and prevents freezing during the production process. This innovation is expected to improve production efficiency, maintain motif quality, and enhance the resilience of small and micro batik enterprises. The research adopts a Research and Development (R&D) approach through applied experimentation, engineering design, and co-creation with local batik artisans. The two-year project includes wax characterization, temperature analysis, prototype design, and field testing with Keyna Gallery, a natural dye batik producer in Jombang. The outcomes include a simple patent, a functional prototype, and international journal publications. With a targeted Technology Readiness Level (TRL) of 7–9, this innovation supports SDG 8 (Decent Work and Economic Growth) and SDG 12 (Responsible Consumption and Production), promoting a sustainable, efficient, and globally competitive batik industry.
Evaluasi Pemilihan Material pada Pemotong Kertas Manual Kapasitas Besar untuk Optimalisasi Desain Produk Lokal pada Komponen Pisau dan Rangka Iswanto, Iswanto; Wijoyo, Agung Budy; Mulyadi, Mulyadi; Fahruddin, A’rasy
TURBO [Tulisan Riset Berbasis Online] Vol 14, No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i2.4424

Abstract

Penelitian ini mengkaji pemilihan material pada pemotong kertas manual kapasitas besar melalui pendekatan berbasis literatur dan data sekunder, dengan mengacu pada konfigurasi umum produk yang telah tersedia di pasaran. Fokus diarahkan pada analisis karakteristik teknis material dua komponen utama—pisau dan rangka—guna merumuskan rekomendasi desain produk lokal yang efisien, andal, dan tetap ekonomis. Analisis difokuskan pada perbandingan teknis material secara komparatif dan evaluasi multi-kriteria melalui weighted decision matrix. Hasil menunjukkan bahwa material seperti baja perkakas D2 dan SKD11, serta baja paduan rendah solid, memberikan performa unggul pada produk profesional, namun tidak efisien secara biaya untuk skala UMKM. Alternatif material seperti SK5 untuk pisau dan AISI 1020 untuk rangka dinilai mampu memberikan kompromi optimal antara performa teknis dan efisiensi biaya, dengan tetap mempertimbangkan ketersediaan lokal dan kemudahan manufaktur. Kajian ini memberikan kontribusi terhadap perancangan ulang pemotong kertas berbasis prinsip rekayasa material yang adaptif terhadap kebutuhan industri nasional skala kecil dan menengah.
Bearing Life Evaluation in Between Bearing Centrifugal Pumps: Evaluasi Umur Bantalan pada Pompa Sentrifugal dengan Bantalan Dewanto, Dodik Hari; Fahruddin, A’rasy
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2037

Abstract

General Background: Centrifugal pumps are widely applied in industrial cooling systems where bearing reliability determines operational continuity. Specific Background: At PT Java Pacific, a between bearing centrifugal pump using type 6311 deep groove ball bearing operates for gearbox cooling and frequently experiences premature failure. Knowledge Gap: A discrepancy exists between theoretical bearing life estimation and actual service life in field operation, yet quantitative comparison in this specific configuration remains limited. Aims: This study aims to calculate the theoretical L10h bearing life, compare it with actual operational data, and formulate an appropriate preventive maintenance strategy. Results: Based on a basic dynamic load rating of 74.1 kN, equivalent load of 5.45 kN, and shaft speed of 5000 rpm, the calculated bearing life is 8,378.07 hours (0.96 years). However, field data show replacement intervals of only 5–8 months, indicating earlier degradation primarily associated with lubrication and operational factors. Novelty: This study provides a direct quantitative comparison between theoretical bearing life and real industrial data for a 6311 bearing in a between bearing centrifugal pump configuration. Implications: The findings support structured lubrication scheduling and condition monitoring to reduce premature bearing failure and optimize maintenance planning in industrial pump systems. Keywords: Centrifugal Pump, Bearing Life, Preventive Maintenance, Equivalent Load, Industrial Reliability Key Findings Highlights Theoretical L10h calculation produced 8,378.07 operating hours under specified load and speed conditions. Field replacement records indicate shorter service intervals of 5–8 months. Lubrication management and operational load control are critical factors in reducing premature failure.
Pressure Variation and Heat Transfer in Pokka 5001 Condenser: Perubahan Tekanan dan Perpindahan Panas pada Kondensor Pokka 5001 Fakhrizi, Rendy Rakhmad; Fahruddin, A’rasy; Mulyadi; Widodo , Edi
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2100

Abstract

General Background Condensers play a crucial role in thermal systems by converting steam into liquid through heat transfer processes. Specific Background The performance of condensers is influenced by key parameters such as pressure, temperature, and fluid flow rate, particularly in finned tube systems. Knowledge Gap Previous studies have examined general condenser performance, but limited research has focused on Pokka 5001 type condensers with louvered fins under varying pressure conditions. Aims This study aims to analyze the efficiency and heat transfer rate of a Pokka 5001 condenser using pressure variations as the primary variable. Results Experimental results show that increasing pressure from 20 to 40 Psi leads to higher efficiency values, ranging from 73.17% to 89.68%, and improves heat transfer rate and fluid work. Additionally, higher flow rates contribute to increased heat transfer performance. Novelty This study provides experimental evaluation of a Pokka 5001 finned tube condenser with controlled pressure variation and airflow conditions. Implications The findings support better operational control of pressure and flow rate to maintain optimal condenser performance in thermal systems. Keywords: Condenser Pressure, Heat Transfer, Efficiency Analysis, Finned Tube, Thermal System Key Findings Highlights Efficiency increases consistently with rising operating pressure Flow rate growth correlates with higher thermal transfer performance Experimental data identify optimal operating conditions
Dough Mixer Machine Design Increases Cracker Production Capacity: Desain Mesin Pengaduk Adonan Meningkatkan Kapasitas Produksi Kerupuk Saputra, Muhammad Anggie Cahya; Mulyadi; Fahruddin, A’rasy; Widodo, Edi
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2126

Abstract

General Background: Productivity and consistency are essential factors in food processing industries, particularly in small and medium enterprises. Specific Background: Manual dough mixing in cracker production often results in low efficiency and inconsistent product quality. Knowledge Gap: Limited studies focus on practical machine design that addresses both productivity and consistency in small-scale cracker production. Aims: This study aims to design and develop a dough mixer machine to improve production capacity and mixing consistency. Results: The developed machine demonstrates improved mixing performance, increased production capacity, and more uniform dough compared to manual processes. Novelty: The study presents a practical machine design tailored for small-scale industries with specific capacity considerations. Implications: The results provide a reference for implementing appropriate technology to support productivity improvement in small-scale food production. Keywords: Dough Mixer, Machine Design, Productivity, Small Industry, Food Processing Key Findings Highlights Mechanical system enables higher output compared to manual mixing Process uniformity improves through controlled rotation mechanism Design supports small-scale production requirements
Co-Authors Abdullah Barafi, Keigen Al Amien, Mochammad Sandi Alamsyah, Candra Firman Ali Akbar Anom Isti , As’ad Barafi, Keigant Abdullah Dewanto, Dodik Hari Edi Widodo, Edi Fakhrizi, Rendy Rakhmad Hanani, Nabil Azka Herman Sugianto Iswanto Iswanto Izza Anshory Mahendra, Arif Wisnu Isha Muhammad Syahril MULYADI Mulyadi Mulyadi Muslichah Erma Widiana Nugroho, Wistyo Nugroho Nurrochman, Mochammad Prantasi Harmi Tjahjanti Purboyo, Prido Dwi Puspawarna, Rangga Bayu R Dimas Adityo Rachmat Firdaus Saputra, Muhammad Anggie Cahya Wibisono , Satria Agung Wibisono, Satria Agung Widodo , Edi Wijoyo, Agung Budy Yudistira, Muhammad Dwi Andika Yulianto, Mochammad Yunus, Moh