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Creative Research in Engineering (CERIE)
Published by Universitas Muhammadiyah Purwokerto
ISSN : 27748278     EISSN : 27748006     DOI : 10.30595/cerie.v1i2.10845
Core Subject : Science, Social, Engineering,
Control & Systems Engineering Energy Environmental Science Materials Science & Nanotechnology Mechanical Engineering
CERIE merupakan sarana komunikasi bagi mahasiswa, dosen, dan praktisi profesional di bidang teknik. Ruang lingkup CERIE meliputi Konversi Energi, Desain Teknik dan Tribologi, Material Lanjutan, Otomotif, Proses Produksi CAM CNC/CAD, Sistem Kontrol dan Robotika, Nanoteknologi, Metrologi, dan Komputasi.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 41 Documents
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Penambahan Arang Batok Kelapa ke Zeolit Alam untuk Filter Air Keramik Sri Mulyo Bondan Respati; Helmy Purwanto; Nur Kholis; Ulin Nuha
Creative Research in Engineering (CERIE) Vol 4, No 1 (2024): Creative Reserach in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/cerie.v4i1.17197

Abstract

Campuran zeolit alam dan arang tempurung kelapa ini dapat digunakan sebagai filter karena sifat fisik, kimia dan adsorbennya yang unik untuk cairan. Filter yang ada masih berupa partikel-partikel kecil yang disusun. Susunan partikel dapat berubah yang mebuat tidak maksimal penyaringannya. Perlu adanya inovasi pembuatan filter keramik berbahan baku zeolit alam-arang tempurung kelapa. Filter keramik berbahan dasar zeolit alam dan arang tempurung kelapa telah dibuat dengan cara sinterin pada suhu 900o C. Pada penelitian ini dilakukan perhitungan penyusutan, densitas dan porositas filter keramik. Hasil penyaringan diukur dengan flowabilitily dan nilai TDS (Total Dissolved Solid) air. Hasil penelitian ini menunjukkan bahwa semakin banyak campuran arang tempurung kelapa maka semakin tinggi susutnya, semakin rendah densitasnya, semakin tinggi nilai porositasnya, semakin tinggi debit airnya dan semakin rendah nilai TDS airnya. Penambahan arang batik kelapa terbukti mengurangi kandungan partikel dalam air meskipun memperbesar porositas
Pengaruh Heat Treatment terhadap Mikrostruktur dan Kekerasan pada Material Low Carbon Stell ST-37 Atik Setyani; Hendy Roesma Wardhana; Mansyur Abdul Shaleh; Stephanus Yoshi Kristanta; Firmansyah Ismudian Syahidin; Nixon Carlotta
Creative Research in Engineering (CERIE) Vol 4, No 2 (2024): Creative Research in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/cerie.v4i2.19590

Abstract

Material low carbon steel ST-37 menjadi salah satu material yang prospektif untuk dikembangkan dalam berbagai aplikasi perkapalan diantarannya lambung kapal. Namun disisi lain diperlukan treatment guna meningkatkan ketangguhan serta kekuatannya yang sampai saat ini menjadi salah satu tantangan dalam fabrikasi material kapal. Oleh karena itu, pada penelitian ini telah dilakukan pengkajian tentang perlakuan panas pada material ST-37. Material low carbon steel ST-37 dihomogenisasi pada temperatur 800 ℃ selama 1 jam diikuti dengan pendinginan udara. Selanjutnya material diaustenisasi pada temperatur 850 ℃ dan 870 ℃ selama 15 menit kemudian di lakukan pendinginan cepat menggunakan media air. Sampel dikarakterisasi menggunakan XRD untuk mengidentifikasi fasa, pengujian metalografi dan uji kekerasan menggunakan microvickers. Hasil pengujian mikrsotruktur menunjukkan bahwa setelah perlakuan panas terjadi pembentukan fasa ferit acicular, retained asutenit dan pengecilan ukuran butir. Analisa struktur mikro dilakukan dengan proses metalografi menggunakan esta NaOH.  Selain itu identifikasi fasa juga terkonfirmasi melalui pengujian XRD yang diketahui terdapat puncak dengan hkl fasa ferit α (111), α (200) dan α (220). Sedangkan fasa reatined austenit terkonfirmasi pada hkl γ (220). Hasil pengujian microvicekrs menunjukkan peningkatan kekerasan pada sampel yang telah diberikan perlakuan panas dari 129.53 HVN menjadi 308.2 HVN pada sampel 850 ℃ dan 312.5 HVN pada sampel 870 ℃ . Peningkatan kekerasan pada sampel terjadi melalui mekanisme penguatan batas butir dan presipitasi.
Karakteristik Palm Oil Biodiesel dan Performa Mesin Diesel : A Review Hutomo Jiwo Satrio; Yuliarto Joko Sumbogo; Wibi Pramanda
Creative Research in Engineering (CERIE) Vol 4, No 2 (2024): Creative Research in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/cerie.v4i2.22833

Abstract

This article is a descriptive review study on palm oil biodiesel and its comparison with diesel fuel. Crude Palm Oil (CPO) is the best raw material for biodiesel because it has similar fuel specifications to diesel fuel. Fuel specifications according to American Standard Testing and Material (ASTM) and European Standard (EN) specifications are kinematic viscosity, density, and flash point. Palm oil biodiesel has a higher Brake Specific Fuel Consumption (BSFC) value and a lower Brake Thermal Efficiency (BTE) value compared to diesel. Palm oil biodiesel has higher NOx emissions, but lower HC and CO emissions, than diesel. In addition, palm oil biodiesel can be used in diesel engines with little or no modification. It has higher density, cooler flow problems and lower calorific value. Biodiesel can be blended with diesel and used in various concentration ratios to produce biodiesel blends that have properties that comply with international standards on diesel engine fuel and emissions, resulting in improved diesel engine performance and reduced emissions. The B20 and B30 biodiesel blend compositions are the best blend compositions based on the balance between engine efficiency and emission reduction due to the optimal balance between engine performance and environmental benefits. The B20 and B30 biodiesel blends show significant reductions in CO and HC emissions, achieving reductions of about 10% to 25% compared to diesel. The decrease in BTE and increase in BSFC are still proportional, so they do not compromise overall fuel efficiency too much.
Perancangan dan Fabrikasi Gas Separator untuk Gas Tekanan Tinggi Muhammad Muryanto; Trio Nur Wibowo; Daud Subekti; Cahyo Wibowo
Creative Research in Engineering (CERIE) Vol 4, No 1 (2024): Creative Reserach in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/cerie.v4i1.17712

Abstract

Dalam aliran fluida berupa gas alam untuk bahan bakar terjadi fenomena perubahan fasagas yang yang diakibatkan oleh komposisi gas maupun  peralatan yang digunakan untuk menyalurkan gas dari sumber gas utama sampai ke pengguna akhir. Perubahan fasa tersebut berakibat terhadap komposisi gas bercampur dengan cairan yang harus dihindari agar tidak menyebabkan terganggunya proses pembakaran. Cairan yang terbawa  tersebut dapat berupa kondensat, oli dan air yang terbawa selama proses penyaluran akibat perubahan suhu dan tekanan. Kondensat dapat dibawa dari sumber gas utama dan terjadi akibat perubahan tekanan dan suhu pada saat penyaluran baik dengan kompresor, saat melalui pipa maupun oleh kondisi lingkungan saat penyaluran. Oli terbawa karena pada saat kompresi gas dari tekanan rendah ke tekanan tinggi minyak pelumas akan terbawa ke tabung pengumpul ataupun pipa distribusi. Air terbawa dari dalam tangki penyimpan atau tangki pengangkut akibat terjadinya perubahan suhu yang sangat rendah saat dilakukan penyaluran dari tekanan rendah ke tekanan tinggi. Dari fenomena tersebut maka diperlukan alat pemisah berupa gas separator yang bertujuan memisahkan antara cairan dan gas untuk menghasilkan gas yang benar-benar bersih agar proses pembakaran lebih sempurna. Kata kunci: gas, cairan, tekanan
Studi Eksperimental Karakteristik Redaman Getaran pada Axial Fan dengan Variasi Komposisi Rubber Faizin, Ahmad Khairul; Putero, Gladion Alim; Hasan, Nailul
Creative Research in Engineering (CERIE) Vol. 5 No. 1 (2025): Creative Research in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/cerie.v5i1.26141

Abstract

Penelitian ini bertujuan untuk mengevaluasi karakteristik redaman getaran pada axial fan menggunakan tiga komposisi karet (A, B, dan C) sebagai material peredam. Pengujian dilakukan pada kecepatan konstan 2000 RPM dengan pendekatan eksperimental, menggunakan metode half band power untuk mengukur rasio redaman (ζ). Data getaran diambil dengan akselerometer, dianalisis melalui transformasi Fourier, dan dibandingkan berdasarkan komposisi karet yang berbeda (RTV M4503, RTV 683, dan RTV 48 dengan variasi katalis dan filler). Hasil menunjukkan karet A memiliki rasio redaman tertinggi (ζ = 0,012) dan reduksi amplitudo getaran sebesar 73%, diikuti karet B (ζ = 0,009, reduksi 60%) dan karet C (ζ = 0,007, reduksi 44%). Karet A terbukti paling efektif karena sifat viskoelastiknya yang optimal, menjadikannya pilihan terbaik untuk aplikasi axial fan pada kondisi serupa.
Pengaruh Performa Mesin Diesel Berbahan Bakar Crude Palm Oil (CPO) dan B35 Terhadap Variasi Pembebanan SAPUTRO, WILIANDI
Creative Research in Engineering (CERIE) Vol. 5 No. 1 (2025): Creative Research in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/cerie.v5i1.26190

Abstract

One use of alternative fuel that has the potential to be developed currently is crude palm oil (CPO). However, the use of CPO must go through a series of direct tests before it is widely applied. So the aim of this research is to carry out tests related to the use of CPO fuel and determine the effects in terms of engine performance and exhaust emissions. The fuel used in this research is CPO and B35 as existing fuel. The method used is an experimental method, through direct observation and measurement of phenomena when CPO fuel is tested for performance and exhaust emissions. The research used a diesel engine coupled to a generator and loaded with halogen lamps. The loading varies, namely 0.5; 1; 1.5; 2; 2.5; 3; 3.5; 4; up to 4.5 kW. Based on research results, the use of CPO fuel in general will produce higher power, torque and SFC, namely 2.55% each; 2.55%; and 17%. However, when comparing the thermal efficiency, hydrocarbon (HC) emissions and smoke opacity of CPO fuel, it produces a lower value of 10.54%; 15.4%; and 72% compared to B35 fuel engines. This is generally influenced by CPO fuel which has a lower calorific value, viscosity value and higher density than B35.
HHO Gas Production Rate at Different Electrode Plate Configurations and NaOH and KOH Electrolyte Concentrations Kultsum, Ummi; Mahyunani, Dewi; Anggoro, Cahyo Jawoto; Soumi, Andi Ibrahim
Creative Research in Engineering (CERIE) Vol. 6 No. 1 (2026): Creative Research in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

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Abstract

HHO gas is being developed as an alternative fuel due to its efficiency and clean emissions. Water electrolysis with electrolytes and effective electrodes is one production method. This study assessed the efficacy of the HHO gas generator concerning the quantity of electrode plates and varying electrolyte concentrations, specifically NaOH and KOH. The HHO gas production rate during electrolysis exhibited variations with electrolyte concentrations of 2%, 4%, 6%, 8%, and 10%. The configurations of the electrode plates utilized comprised two, four, and six stainless-steel plates. The experimental findings indicated that the KOH electrolyte continuously surpassed NaOH, particularly at elevated concentrations, where increased electrolyte levels significantly enhanced the HHO gas production rate. Optimal conditions were achieved by employing six electrode plates with a 10% potassium hydroxide solution, equivalent to 66.67 grams per 600 milliliters of distilled water, yielding a maximum gas generation rate of 6.9 ml/s. Moreover, hydrostatic pressure study indicated that elevated electrolyte concentration and an increased number of electrode plates directly correlated with enhanced gas production and pressure.
Optimasi Pengendalian Persediaan Gabah Menggunakan Metode EOQ: Studi Kasus pada PD Karya Manik Abadi Oktaviyanto, Syahrul; Suhara, Ade; Rohmah, Yuni Syifau; Triana, N. Neni
Creative Research in Engineering (CERIE) Vol. 6 No. 1 (2026): Creative Research in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

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Abstract

Pengendalian persediaan bahan baku memiliki peran penting dalam efisiensi proses produksi. Kekurangan bahan baku dapat menghambat produksi, sedangkan kelebihan meningkatkan biaya. Penelitian ini mengevaluasi sistem persediaan PD Karya Manik Abadi dengan pendekatan Economic Order Quantity (EOQ). Metode yang digunakan adalah kuantitatif deskriptif, dengan data diperoleh melalui observasi dan wawancara. EOQ digunakan untuk menentukan jumlah pemesanan optimal. Hasil menunjukkan bahwa metode yang saat ini digunakan perusahaan menghasilkan 240 kali pemesanan/tahun dengan rata-rata 2002,5 kg, dan biaya total sebesar Rp 55.961.991. Dengan rasionalisasi EOQ (jumlah pemesanan 12.000 kg), biaya dapat ditekan menjadi Rp 9.870.211. Safety stock yang dihitung sebesar 1882 kg, dan reorder point sebesar 3217 kg.
Optimization of CPU Heatsink Design, A Simulation-Based Study on Temperature Distribution with Different Fin Number Setiawan, Dona; Priyanto, Agung; Ma'arif, Samsul; Rizkyanto Putra, Okta
Creative Research in Engineering (CERIE) Vol. 6 No. 1 (2026): Creative Research in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

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Abstract

In this era of digitalization, a fast processor (CPU) is needed to meet computing needs, but a fast processor can produce high temperatures. With the water cooling technique, the heatsink can help in cooling the processor with the help of a blower/fan. A numerical study was conducted to review the temperature distribution in the heatsink with perforated fin, the effect of the number of holes, and the effect of inlet speed on the CPU temperature, in this study regular fin and perforated fin with 10, 20, and 30 were used. CPU performance relies heavily on an effective thermal management system, where the heatsink plays an important role in dissipating excess heat. This study aims to optimize the design of the CPU heatsink by analyzing the effect of the number of fins on temperature distribution. Simulations were performed using computational software to evaluate multiple heatsink models with varying numbers of fins under the same thermal load conditions. The observed parameters include maximum temperature, heat flux, and temperature distribution on the surface of the heatsink. The simulation results show that an optimal number of fins can significantly improve heat dissipation performance, while an excessive number of fins can actually inhibit airflow and decrease thermal efficiency. This study provides an overview of the thermal behavior of heatsinks and becomes a reference in designing more efficient cooling systems for electronic devices.
Development of a 13 L Portable Sandblasting System: Design, Fabrication, and Surface Roughness Analysis on Aluminum Rofi Romadhon, Saeful; Sugiarto, Tris; Ismail, Adhan; Priwintoko, Baharudin
Creative Research in Engineering (CERIE) Vol. 6 No. 1 (2026): Creative Research in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

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Abstract

Surface preparation plays a vital role in improving coating adhesion and corrosion resistance of metals. Conventional techniques such as sanding or chemical etching are often inefficient, hazardous, or unsuitable for small-scale workshops. Sandblasting provides a more effective solution; however, existing systems are typically bulky and costly. This study aimed to design and evaluate a portable dry sandblasting prototype with a 13 L pressure vessel and maximum operating pressure of 8 bar, developed using the Systematic Engineering Design Method. Aluminum specimens were blasted using silica sand (80 mesh) under varying air pressures (4, 5, and 6 bar) and nozzle distances (10, 15, and 20 cm), with spraying time fixed at 20 seconds. Surface roughness was measured with a Surfcorder Fowler SE1700 (JIS B 0601 standard), and macroscopic observations were performed to assess surface morphology. Results indicated that roughness increased with air pressure and decreased with nozzle distance. The untreated specimen had an Ra of 0.69 µm, rising to 7.92 µm at 6 bar and 10 cm. Several conditions, particularly ≥5 bar and ≤15 cm, produced Ra values above 5 µm, sufficient to improve coating adhesion. The study confirms the prototype’s effectiveness and novelty in combining design and validation, offering a compact, low-cost solution for SMEs and automotive workshops.

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