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JURNAL CRANKSHAFT
Published by Universitas Muria Kudus
ISSN : 26230720     EISSN : 26230755     DOI : -
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal ini merupakan sarana publikasi dan ajang berbagi karya riset dan pengembangannya di bidang teknologi. Jurnal Crankshaft terbit 2 kali dalam setahun, yaitu pada bulan Maret dan September.
Arjuna Subject : -
Articles 255 Documents
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PERANCANGAN MESIN EXTRUDER BRIKET BATOK KELAPA DENGAN METODE VDI 2222 Djuhari, Yoel Permana; Mulyono, Julius; Mulyana, Jaka; Santosa, Hadi; Joewono, Andrew
JURNAL CRANKSHAFT Vol. 8 No. 4 (2025): Jurnal Crankshaft Vol. 8 No. 4 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v8i4.16245

Abstract

Desain dan pengembangan mesin extruder briket berbasis metode Verein Deutscher Ingenieure (VDI) 2222 telah berhasil direalisasikan untuk meningkatkan efisiensi dan kualitas produksi briket dari biomassa, khususnya batok kelapa. Peningkatan populasi global dan ketergantungan pada bahan bakar fosil mendorong kebutuhan akan energi terbarukan, dan briket biomassa menawarkan solusi yang ramah lingkungan dan ekonomis. Proses produksi briket manual masih menghadapi tantangan seperti tekanan tidak seragam dan kualitas briket yang bervariasi. Oleh karena itu, penelitian ini berfokus pada perancangan mesin extruder yang optimal. Penerapan metode VDI 2222 yang sistematis mencakup tahap perencanaan, konseptualisasi, perancangan, dan penyelesaian, memastikan desain produk sesuai dengan kebutuhan dan spesifikasi teknis. Mesin yang dirancang memiliki volume hopper 0,005567 m3, tekanan ekstrusi 5 MPa, dan kapasitas produksi 35 kg/jam. Angka ini jauh melampaui produksi manual dan memenuhi standar industri. Komponen utama seperti screw extruder berdiameter 42 mm dengan sudut 3∘, nozzle pencetak berukuran 2,5 cm, serta motor 1 HP dan gearbox telah dianalisis untuk memastikan kinerja optimal dan efisiensi energi. Hasil akhir menunjukkan bahwa mesin extruder ini efektif meningkatkan nilai tambah limbah organik dan mendukung industri skala kecil dan menengah. Kata kunci:  Mesin Extruder, Briket Batok Kelapa, VDI 222, Efisiensi Produk
PERFORMA PEMBAKARAN CAMPURAN BATU BARA DAN BIOMASSA KAYU JATI SEBAGAI ENERGI ALTERNATIF Suhartoyo, Suhartoyo; Sriyanto, Sriyanto; Purwono, Arif Hidayat; Nugroho, Arif Setyo
JURNAL CRANKSHAFT Vol. 8 No. 4 (2025): Jurnal Crankshaft Vol. 8 No. 4 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v8i4.16260

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh pencampuran biomassa kayu jati dengan batu bara terhadap efisiensi termal dan konsumsi bahan bakar pada sistem pembakaran co-firing. Latar belakang penelitian ini didasari oleh meningkatnya ketergantungan sektor energi terhadap bahan bakar fosil serta potensi besar limbah biomassa yang belum termanfaatkan secara optimal. Metode penelitian dilakukan secara eksperimental di Laboratorium Energi STT Warga Surakarta dengan menggunakan variasi rasio campuran batu bara dan biomassa kayu jati sebesar 5%, 10%, 15%, 20%, dan 25% terhadap total massa bahan bakar. Parameter utama yang diamati meliputi waktu pendidihan air 1 liter, konsumsi bahan bakar, dan efisiensi termal. Hasil pengujian menunjukkan bahwa efisiensi tertinggi diperoleh pada campuran 100% batu bara, yaitu sebesar 100% menjadi acuan, sedangkan campuran 90% batu bara + 10% biomassa menghasilkan efisiensi 96,5%, dengan konsumsi bahan bakar hanya sedikit meningkat. Penambahan biomassa di atas 20% menyebabkan penurunan efisiensi yang signifikan akibat kandungan air dan nilai kalor biomassa yang lebih rendah. Secara keseluruhan, penelitian ini membuktikan bahwa co-firing dengan fraksi biomassa hingga 10–15% dapat diterapkan tanpa penurunan performa yang berarti serta berpotensi mengurangi emisi karbon dan biaya operasional.
DESAIN DAN SIMULASI TERMAL INCINERATOR SKALA KECIL UNTUK PENGELOLAAN SAMPAH PADAT DI WILAYAH PEDESAAN Sutisna, Setya Permana; Yusuf, Mega Ayu
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16141

Abstract

Pengelolaan sampah padat di wilayah pedesaan masih menghadapi kendala serius akibat keterbatasan infrastruktur dan rendahnya penerapan teknologi ramah lingkungan. Sebagian besar masyarakat masih membakar sampah secara terbuka, menghasilkan emisi partikulat dan gas berbahaya. Penelitian ini bertujuan untuk merancang dan mensimulasikan incinerator skala kecil sebagai alternatif sistem pembakaran tertutup yang efisien untuk pengelolaan sampah di pedesaan. Desain incinerator dibuat menggunakan SolidWorks 2024 dan dianalisis menggunakan metode Computational Fluid Dynamics (CFD) pada perangkat lunak ANSYS Fluent. Simulasi dilakukan dalam kondisi steady-state dengan model turbulensi Standard k–ε untuk mempelajari distribusi temperatur dan pola aliran udara di ruang bakar. Hasil simulasi menunjukkan bahwa temperatur maksimum mencapai 872–900 °C di zona inti pembakaran dengan distribusi panas vertikal yang stabil dan efisiensi termal sebesar 76,8%. Pola aliran udara membentuk kolom vertikal terpusat dengan kecepatan puncak 3,1 m/s, didukung turbulensi lokal yang memperbaiki pencampuran udara dan stabilitas nyala api. Temuan ini menunjukkan bahwa desain silinder vertikal dengan rasio tinggi terhadap diameter (H/D = 2,8) mampu menghasilkan pembakaran yang stabil, efisien, dan sesuai untuk skala desa. Hasil penelitian ini menegaskan bahwa pendekatan CFD efektif untuk mengoptimalkan desain incinerator sederhana sebagai teknologi tepat guna pengelolaan sampah padat di wilayah pedesaan Indonesia.
ANALISIS KEKUATAN MATERIAL KOMPOSIT POLYESTER BERPENGUAT SERAT SISAL DAN SERBUK KAYU MAHONI DENGAN VARIASI FRAKSI VOLUME MATRIKS DAN REINFORCEMENT Ahdiat Fakhrudi, Yoga; Basuki, Imam; Ulum, Miftahul
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16599

Abstract

The purpose of this study is to examine how changing the volume percentage of sisal fiber and mahogany wood powder composites can improve their mechanical qualities. The hand lay-up method was used to create composites with a set resin volume fraction of 50% and varying volume fractions of sisal fiber and mahogany sawdust (30%:20%, 35%:15%, 40%:10%, 45%:5%, and 50%:0%). The tensile test (ASTM D638), bending test (ASTM D790), and impact test (ISO 179-1) were among the tests. According to the results, the best impact toughness (70.34 KJ/mm²) was achieved with a combination of 45% fiber and 5% powder. The composition with the maximum tensile strength (23.36 MPa), strain (0.041%), and elastic modulus (574.20 Pa) was 40% fiber and 10% powder; the composition with the highest bending strength (124.50 N/mm²) was 50% fiber and 0% powder. The best composition from the impact test—45% fiber and 5% powder—is used in this study's rearview mirror cover product.
DESIGN OF A MINI-SCALE CRYSTAL ICE SHAVING MACHINE AT CV. LEGUSA ICE KRISTAL, FIFTY-CITY DISTRICT USING SOLIDWORKS Fauzan; Muharni, Riza; Muchlisinalahuddin; Kesuma, Dytchia Septi
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16720

Abstract

The crystal ice shaving process is one of the important stages in crystal ice production that affects the quality and efficiency of production, especially on a small scale business. In practice, the ice shaving machines used often have sizes that do not match the production capacity and are less efficient in energy consumption. These problems encourage the need to design a mini-scale crystal ice shaving machine that suits user needs. This study aims to design a mini-scale crystal ice shaving machine with a capacity of 5 kg/hour that has compact dimensions, is energy efficient, and is able to produce consistent ice shavings. The research method used is a machine design based on mechanical engineering calculations, including analysis of power requirements, transmission systems, machine elements, and modeling using SolidWorks software. The design results show that the machine with a 1 HP motor, a 14:1 pulley-belt transmission system, and a 250 mm diameter rotor is capable of producing a working rotation of 100 rpm with adequate torque. The resulting design is considered suitable for development to the manufacturing stage.
ANALYSIS OF THE EFFECT OF NOISE INTENSITY DB(A) IN THE PRODUCTION PROCESS ON HEARING LOSS IN A COMPRESSOR MANUFACTURING PLANT Andara, Nurul Dwi; Akmal, Muhammad; Margana, Ade Suryatman; Yuningsih, Nani; Ayu, Wirenda Sekar; Muliawan, Rizki
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16743

Abstract

Noise is one of the most common physical hazards in industrial environments and may adversely affect both health and workplace comfort. This study aims to analyze noise intensity during production processes and its impact on workers’ comfort perception at compressor manufacturing plant, as well as to estimate the potential risk of permanent hearing loss using the Noise-Induced Permanent Threshold Shift (NIPTS) method based on ISO 1999:2013. A descriptive quantitative approach was employed, consisting of noise measurements at five production points over three working days and the distribution of questionnaires to 31 respondents to assess perceptions regarding comfort, communication disturbance, concentration, and physical complaints. The results indicated that noise intensity in several areas, particularly frame manufacturing and sandblasting, exceeded the threshold limit of 85 dB(A), with the highest level reaching 117.6 dB(A). NIPTS calculations showed that workers in these areas were at high risk of permanent threshold shifts, with values ranging from 31.28 to 69.77. In contrast, the bending machine area presented noise levels closer to the threshold, with relatively low NIPTS values (0.30–0.71), suggesting a lower risk of long-term auditory impairment. Questionnaire results revealed that 50% of workers perceived noise levels as severe, 29.2% as moderate, and 20.8% as mild. The majority also reported that noise slightly interfered with their concentration and comfort, although most were able to adapt to the working conditions. In conclusion, noise exposure in the production environment of compressors manufacturing plant poses both auditory and non-auditory health risks. Therefore, comprehensive noise control strategies, including engineering modifications, administrative measures, and consistent use of personal protective equipment, are required to safeguard workers’ health and support sustainable productivity.
DESAIN DAN RANCANG BANGUN DRONE PENABUR BENIH PERTANIAN Saputro, Harjono; Riyanto, Handoko; Adesta, Erry Yulian Triblas; Muhida, Riza; Mulyana; Riza, Muhammad; Tanjung, Tia
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16785

Abstract

Modern technological progress has inspired numerous innovations that enhance efficiency in human activities, with agriculture remaining one of the most vital sectors for sustaining national economies. Appropriate technologies increase productivity while reducing dependence on traditional practices that demand excessive time and labor. This research presents the design and development of an agricultural drone created for seed spreading. The system employs a 300 Rpm DC motor that drives a propeller to ensure even seed distribution. Performance evaluation compared manual seed spreading and the drone-based method. Results demonstrated that manual spreading required an average of 3.33 hours per kilogram of seeds, whereas the drone accomplished the same task within 1 minute 20 seconds (80 seconds) per kilogram. These findings confirm that drone-assisted seeding offers an efficient and practical approach that supports the advancement of modern agriculture.
ANALISIS SIMULASI PERFORMA TURBIN PROPELLER PEMBANGKIT LISTRIK TENAGA MIKROHIDRO PROFIL AIRFOIL NACA 5310 DAN NACA 6412 Haryadi; Ahmad Zaki Rasyidi; Apri Setiawan; Budi Triyono; Setiawan, Dibyo
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16796

Abstract

Renewable energy, particularly hydropower, has become an important alternative in reducing dependence on fossil fuels. One widely used technology is the propeller turbine, which utilizes airfoil-based blade profiles to enhance the conversion of fluid energy into mechanical energy. This study aims to analyze the simulation performance of a propeller turbine with variations of NACA 5310 and NACA 6412 airfoil profiles under low-head conditions. The methodology employed is a numerical simulation based on Computational Fluid Dynamics (CFD). The observed variables include flow rate, pressure distribution, rotational speed, torque, hydraulic power, mechanical power, and turbine efficiency at head variations of 3 m and 5 m. The simulation results indicate that increasing the head from 3 m to 5 m significantly increases the flow rate, torque, and mechanical power; however, the turbine efficiency decreases drastically from approximately 69–71% at a 3 m head to about 30% at a 5 m head. The NACA 6412 profile demonstrates slightly better performance than the NACA 5310 profile, particularly in terms of efficiency and torque stability. Overall, both airfoil profiles are more suitable for low-head operating conditions and therefore have strong potential for application in micro-hydro power plants.
EVALUASI PENGARUH GEOMETRI SUDUT MATA PISAU MESIN PENCACAH TERHADAP KUALITAS DAN DISTRIBUSI UKURAN HASIL PENCACAHAN Kandolo, Jeyno Raymon; Pranoto, Sigiet Haryo; Nurrohkayati, Anis Siti; Sylvano, Ananda
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16826

Abstract

This study aims to analyze the effect of blade edge angle geometry on the particle size distribution and quality of shredded materials, ranging from plastic to cardboard, using a rotary cutter–type shredding machine. The blade edge angles investigated in this study were 35° and 60°, with test materials consisting of polyethylene terephthalate (PET) plastic, plastic bags, and cardboard. Operating parameters of the machine, including rotational speed, number of blades, and blade thickness, were kept constant throughout the experiments. The analysis focused on shredding capacity, particle size distribution, and the quality of shredded products in terms of shape uniformity and process stability. The results indicate that the 35° blade angle produces higher shredding capacity, smaller and more uniform particle sizes, and better overall shredding quality compared to the 60° blade angle. In contrast, the 60° blade angle tends to produce longer and less uniform particles, particularly for flexible plastic materials, and increases the likelihood of material clogging during the shredding process. Based on these findings, it can be concluded that a blade edge angle of 35° is the optimal configuration for achieving efficient shredding performance and high-quality plastic output, thereby supporting recycling processes.
- KARAKTERISASI METALURGI SAMBUNGAN LAS SMAW PADA BAJA ST 37: ANALISIS STRUKTUR MIKRO DAN KEKERASAN PADA EDGE JOINT: - Sylvano, Ananda; Pranoto, Sigiet Haryo; Nurrohkayati, Anis Siti
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16830

Abstract

This study investigates the relationship between microstructural changes and mechanical properties in an edge joint of ST 37 steel following Shielded Metal Arc Welding (SMAW) at 100 A using an E6013 electrode, without subsequent heat treatment. The analysis focuses on the Weld metal, Heat Affected Zone (HAZ), and Base metal through metallographic examination and Vickers hardness testing. The results indicate that variations in hardness values are strongly influenced by microstructural transformations induced by the thermal cycle during welding. The HAZ exhibits the highest hardness (172 HV), which correlates with an increase in the pearlite fraction to approximately 60% because of a relatively rapid cooling rate. This phase transformation leads to a harder microstructure, although it tends to be more brittle compared to the other regions. Meanwhile, Weld-metal records a hardness of 157 HV, and the Base metal shows 142 HV, reflecting differences in composition and thermal history across each zone. Overall, the average joint hardness of 157.33 HV demonstrates that despite significant microstructural modifications, the mechanical integrity of the welded joint remains acceptable and meets relevant standards.

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