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Turbo : Jurnal Program Studi Teknik Mesin
Published by Universitas Muhammadiyah Metro
ISSN : 23016663     EISSN : 2477250X     DOI : https://doi.org/10.24127
Core Subject : Engineering,
Mechanical Engineering
TURBO ISSN (print version) 2301-6663 & ISSN (online version) 2477-250X is a peer-reviewed journal that publishes scientific articles from the disciplines of mechanical engineering, which includes the field of study (peer) material, production and manufacturing, construction and energy conversion. Articles published in the journal Mechanical include results of original scientific research (original), and a scientific review article (review). Mechanical journal published by the Department of Mechanical Engineering, Faculty of Engineering, University Muhammadiyah of Metro for publishing two periods a year, in June and December with the number of articles 14-20 per year . Editors receive manuscripts in mechanical engineering from various academics, researchers and industry practitioners.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 756 Documents
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STUDI TENTANG PENGARUH TEKANAN KOMPAKSI DAN SINTERING PADA CAMPURAN SERBUK Cu, Fe, Si, Ni Muhammad Dermawan
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.v14i2.3712

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh tekanan kompaksi dan suhu sintering terhadap  keausan dan kekerasan green body berbahan dasar campuran logam tembaga (Cu), besi (Fe), silikon (Si), dan  nikel (Ni). Green body dibuat melalui proses metalurgi serbuk dengan tekanan kompaksi 1178 MPa dan suhu sintering 700°C. Pengujian dilakukan untuk mengukur tingkat keausan menggunakan metode Universal Wear  Testing dan kekerasan menggunakan metode Brinell. Hasil penelitian menunjukkan bahwa peningkatan tekanan  kompaksi dan suhu sintering berpengaruh signifikan terhadap sifat mekanik green body. Nilai keausan rata-rata spesimen yang diuji adalah 0,0000318 mm³/kg.m, sementara kekerasan rata-rata mencapai 31,84 BHN. Hal ini  mengindikasikan bahwa material memiliki ketahanan aus yang baik dan kekerasan yang memadai untuk aplikasi  industri. Korelasi antara kekerasan dan keausan juga menunjukkan bahwa material dengan kekerasan yang lebih  tinggi cenderung lebih tahan terhadap keausan. Penelitian ini memberikan kontribusi dalam pengembangan  material green body dengan sifat mekanik yang optimal, yang diharapkan dapat mendukung peningkatan kualitas  produk berbasis logam komposit di industri.
Memformulasikan Rumusan Matematik untuk Nilai Defleksi Pegas Tekan dan Tarik Seiring Penambahan atau Pengurangan Diameter Kawat Baja Irene Budayawaty; Yohanes Benediktus Yokasing; Amiruddin Abdullah
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.v14i2.3780

Abstract

Artikel ini memaparkan pengembangan rumusan matematik untuk menghitung defleksi pegas tekan dan tarik baja seiring perubahan diameter kawat. Penelitian ini bertujuan memberikan model yang akurat dan sederhana untuk memprediksi defleksi pegas berdasarkan variasi diameter kawat, yang merupakan parameter penting dalam desain mekanik. Untuk pegas tekan, digunakan model matematik linear yang menunjukkan penurunan defleksi terhadap peningkatan diameter kawat, dirumuskan sebagai δ(d)=a-b.d. Sebaliknya, untuk pegas tarik, defleksi berbanding terbalik dengan pangkat diameter kawat, dan digambarkan melalui rumus δ = k⋅d^−n, di mana k dan n diperoleh melalui analisis regresi. Metode ini memungkinkan perancangan pegas yang lebih efisien dengan memperkirakan perubahan defleksi secara presisi sesuai kebutuhan beban kerja. Formulasi ini, desainer dapat menyesuaikan dimensi kawat pegas secara optimal untuk mencapai nilai defleksi yang diinginkan. Penelitian ini menyimpulkan bahwa pendekatan matematik yang disesuaikan dengan jenis pegas dan parameter material dapat meningkatkan ketepatan prediksi defleksi, sehingga memperbaiki performa dan efisiensi dalam aplikasi industri.
Analysis of Energy Transportation and Distribution in Indonesia Suganda P Simanjuntak; Rismen Sinambela; Leonard Lisapaly
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.v14i2.3873

Abstract

Energy transportation and distribution are crucial components in the national energy system, serving as the main link between energy sources and consumers. The efficiency of both systems is crucial to maintain the stability of energy supply and minimize energy loss during the distribution process. This study aims to explore the importance of energy transportation and distribution in the context of national energy security and the geographical and energy infrastructure challenges in Indonesia. Using a literature study method, this study collects and analyzes literature from various academic sources and relevant reports. The results show that an efficient energy transportation and distribution system plays a major role in reducing the energy gap between regions, expanding energy access to remote areas, and supporting sustainable economic development. In addition, Indonesia's geographical challenges as an archipelagic country, such as the distance between islands and population inequality, widen the energy infrastructure gap between the western and eastern regions. Investment in energy infrastructure development, especially in disadvantaged areas, and the integration of renewable energy are important steps in strengthening national energy security. This study concludes that in order to achieve better and more equitable energy security, inclusive and sustainable energy infrastructure development policies and strategies are needed.
Reverse Engineering dan Evaluasi Desain pada Komponen V-Plow Conveyor Belt Jenis Bulk Material Handling menggunakan Metode Elemen Hingga Febriyanto Febriyanto; Sally Cahyati
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.v14i2.3890

Abstract

This paper discusses reverse engineering and design evaluation of the V-Plow component in conveyor belt systems used for handling bulk materials in the mineral and coal industry. V-Plow functions as a carryback material cleaning tool that can be carried to the bottom of the tail pulley on the conveyor belt. The absence or non-optimality of this tool can cause extreme damage to the tail pulley due to material carryback from the head pulley. This research aims to evaluate and redesign the V-Plow so that it has a more appropriate safety factor compared to the existing design. Design changes also include the addition of springs to improve V-Plow performance. Tests were carried out using SolidWorkss software, and the stress analysis on the belt was calculated physically. The research results show that the existing design has a safety factor that is too large, namely 22.5, which indicates high production costs and over-specification. The redesign succeeded in reducing the safety factor to 6, which is still within safe limits. In accordance with CEMA standards, the optimum tension on the belt is 5 lb/in belt width. By adding a three spring design, the optimal force F = 355.67 N, twisting moment 𝑀=11.3 𝑁𝑚, torsion spring constant 𝐾 𝑡𝑜𝑟𝑠𝑖𝑜𝑛=28.577 𝑁𝑚/𝑟𝑎𝑑, and working angle of the torsion spring 𝛼= 22.63 degrees. The frame weight has also been reduced from +116 kg to +83 kg (28%) through the new design. This research proves that the V-Plow redesign not only increases efficiency but also reduces production costs, making it a more optimal and economical solution for the mineral and coal industry.
Welding Joint Analysis On Three Wheel Transport Ambulance Frame Auliana Diah Wilujeng; Misbakhul Fatah; Ferly Isnomo Abdi; Achmad Hikam Ulul Sufi
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.v14i2.3991

Abstract

Three-wheels ambulance transport is crucial for the mandangin island community, sampang subdistrict, sampang regency. The construction of a three-wheel ambulance utilizes the frame of a typical three-wheeled vehicle. However, according to technical guidelines for ambulance vehicles, the required length exceeds that of the standard three-wheel vehicle. Therefore, the frame of the three-wheel vehicle is extended using additional materials to increase the vehicle's length. The frame extension method employed is welding. Two welding path variations are used: straight and zig-zag. Testing was conducted using SolidWorks simulation and validated through bending tests. The simulation results indicated a stress value of 248 MPa for both variations. Meanwhile, the validation tests produced stress values of 66.99 MPa for the straight weld path and 69.42 MPa for the zig-zag weld path. This demonstrates a significant difference in stress between the simulation and validation results, attributed to residual stresses and distortion changes after welding. Additionally, the variation in welding paths (which may affect weld length) did not yield significant differences in outcomes
Analisis Perpindahan Panas Pada Alat Desalinasi Surya Pasif Dengan Variasi Tinggi Penutup Lysandra Dimitry Nggadas
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.v14i2.3994

Abstract

Desalinasi surya merupakan salah satu teknologi yang efisien untuk mengatasi kekurangan air bersih di wilayah pesisir. Penelitian ini bertujuan untuk menganalisis Perpindahan Panas Pada Alat Desalinasi Surya Pasif Dengan Variasi Tinggi Penutup. Variasi yang digunakan adalah tinggi penutup 15 cm dan 30 cm, serta material penutup berupa kaca dan plastik UV. Penelitian dilakukan selama 4 hari dengan pengambilan data setiap 5 menit selama 8 jam per hari. Parameter yang diukur meliputi temperatur pada material penyerap, temperatur ruang, temperatur air, intensitas radiasi matahari, dan volume air hasil desalinasi. Hasil penelitian menunjukkan bahwa material UV dengan tinggi 15 cm menghasilkan perpindahan panas tertinggi sebesar 29,04 W/m² pada hari pertama, sedangkan kombinasi kaca dengan tinggi 30 cm memberikan efisiensi desalinasi tertinggi sebesar 17,28% pada hari keempat. Laju evaporasi tertinggi dicapai oleh material UV 15 cm dengan nilai 0,54 W/m². Kombinasi material kaca dengan tinggi 30 cm terbukti memberikan hasil desalinasi yang paling stabil dan efisien. Penelitian ini menunjukkan bahwa pemilihan material dan konfigurasi tinggi penutup sangat berpengaruh terhadap efisiensi sistem desalinasi surya.
Experimental Study of The Effect of Reactor Temperature Variations on The Characteristics of Oil Resulting from The Pyrolysis Method of Crumb Rubber Solid Waste Angky Puspawan; Nurul Iman Supardi; Agustin Gunawan; Abdul Latif Mubarok; Rifki Sulthan
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.v14i2.4045

Abstract

Energy is an important part of human life because almost all human activities always require energy. Therefore, it is necessary to conduct research to overcome the above problems, namely by making alternative energy by utilizing crumb rubber plant waste into alternative oil. The crumb rubber solid waste that we use comes from the micro blending and macro blending milling process from the process there is waste in the form of granulated rubber (Crumb Rubber Waste). Crumb Rubber Plant waste is currently not being utilized optimally. The basic structure of natural rubber is a linear chain of isoprene units (C5H8) natural rubber is a polymer of hydrocarbon compounds, namely 2–methyl-1,3 butadiane (isoprene). The main purpose of this study is to determine the value of the oil combustion rate resulting from the pyrolysis of crumb rubber solid waste and find out the characteristics of the oil resulting from the pyrolysis of crumb rubber solid waste and find out the comparison of the quality of oil from crumb rubber solid waste. From this study will show the optimum amount of pyrolysis and distillation results to produce oil. Operating conditions take place at atmospheric pressure with temperature variations of 200oC, 250oC, 300oC, and 350oC for 180 minutes for the pyrolysis process which will then be distilled with a temperature of 95°C for 20 minutes. The results showed that % of the conversion of raw materials into oil (amendment) was highest for the pyrolysis process at a temperature of 350oC of 51.86% while in the distillation process pyrolysis oil with a temperature of 350oC as much as 82.55%. For the value of the combustion rate in the largest pyrolysis process with a value of 0.975  at a temperature of 350oC and a distillation process of 1,612  at a temperature of 350oC.
Advancing Green Urea Recovery Flow: Enhancing Efficiency Through Flow Conditioning to Control Turbulence and Pressure Drop Albarrobi Nabila Saeful; Jusef Saiful; Ahmad Atif Fikri
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.v14i2.4086

Abstract

Green urea production requires high efficiency, in addition to reducing carbon emissions, high efficiency is needed to prevent waste from being wasted too much. High turbulence results in the creation of biuret that can interfere with the efficiency of urea production, one of the solutions that can be used to overcome this problem using flow conditioners. The analytical method is used to analyze and select the flow conditioner design, with the aim of having the most optimal turbulence and pressure drop values. The numerical method of Computational Fluid Dynamics (CFD) is also used in this study, the purpose of which is to validate the results and visualize the flow. The results show that the difference between the results of the analytical and numerical methods is not more than 5%, and the turbulence value can be reduced by about 5x by only losing about 0.3 bar of pressure from the system without the use of flow conditioners. This shows that the green urea production process can be more efficient and reduce the waste produced.
Analisis Eksergi Pada Pembangkit Listrik Tenaga Biomassa Pabrik Gula PT. X Arief Rahman Prayuda; Heru Kuncoro
TURBO [Tulisan Riset Berbasis Online] Vol 14 No 1 (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.v14i1.4087

Abstract

Pembangkit listrik di pabrik gula pada umumnya menggunakan sistem kogenerasi dalam menghasilkan energi listrik dan panas untuk menjalankan proses industrinya. Ampas tebu atau bagasse merupakan produk sampingan yang dihasilkan dari proses penggilingan tebu yang dapat digunakan kembali sebagai bahan bakar utama pada boiler. Akan tetapi, ampas tebu masih memiliki kandungan air yang cukup tinggi, yaitu sebesar 55% sehingga dapat mempengaruhi efisiensi pembakaran yang dapat berdampak terhadap kinerja keseluruhan pembangkit. Maka dari itu, penelitian analisis eksergi dilakukan guna mengevaluasi kehilangan energi dan mengidentifikasi peluang peningkatan efisiensi. Penelitian ini bertujuan untuk menganalisis efisiensi eksergi dan destruksi eksergi pada berbagai komponen utama pembangkit. Metode yang digunakan dalam penelitian ini melibatkan perhitungan eksergi fisik dan kimia berdasarkan data operasional pembangkit perusahaan gula PT. X. Hasil penelitian menunjukkan bahwa efisiensi eksergi keseluruhan sistem masih tergolong rendah akibat tingginya destruksi eksergi pada boiler yang mencapai 93,89% dari total eksergi yang masuk. Di sisi lain, turbin uap memiliki rata-rata efisiensi eksergi sebesar 73%, sehingga masih terdapat potensi perbaikan dalam sistem ekspansi uap. Berdasarkan hasil analisis, peningkatan kualitas pembakaran, optimasi pemanfaatan panas buang dan operasional, serta perbaikan pada sistem perpindahan panas merupakan beberapa strategi utama yang dapat dilakukan guna mengurangi destruksi eksergi dan meningkatkan efisiensi keseluruhan sistem.
CLIMAHARMONY: INTEGRASI PINTAR KONTROL SUHU DAN KELEMBABAN DALAM GREEN HOUSE UNTUK PERTANIAN BERKELANJUTAN BERBASIS WEMOS ESP8266 Sahabman Tua Pardamean Naibaho; Eva Diah Zanuarini; Wanda Antika Sari; Ulil Ulya Fadlilah
TURBO [Tulisan Riset Berbasis Online] Vol 15 No 1 (2026): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v15i2.4096

Abstract

This research aims to develop an effective automatic control system for managing temperature and humidity within a greenhouse to support sustainable agriculture. The system utilizes the Wemos ESP8266 microcontroller as the central control unit, responsible for monitoring and regulating environmental conditions in real-time. The DHT22 sensor is used to measure temperature and humidity, while the actuators consist of fans, exhaust fans, and misting nozzles. The ergonomically designed greenhouse, measuring 3m x 2m, is equipped with four fans and four nozzles to control temperature and humidity. It also features UV-coated walls that allow light to penetrate while protecting plants from pests. The Climaharmony humidity control system performed well, maintaining an average humidity of 77.77% RH with minimal fluctuation (standard deviation of 0.49% RH), staying within the ideal range of 65%-78% RH. Similarly, the temperature control system recorded an average temperature of 28.46°C, with small fluctuations (standard deviation of 0.92°C), also within the optimal range of 20°C to 30°C. Overall, the conditions inside the greenhouse were conducive to the growth of lettuce plants. Based on the research conducted on August 30 and 31, 2024, the humidity within the greenhouse has not yet reached optimal stability. It is recommended that future research use higher-dimention fans to improve humidity control. Keywords: Greenhouse, automated control, temperature, humidity, Wemos ESP8266

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