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All Journal Jurnal Dedikasi SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin R.E.M (Rekyasa Energi Manufaktur) Jurnal Turbo : Jurnal Program Studi Teknik Mesin Justek : Jurnal Sains Dan Teknologi Community Empowerment JTTM: Jurnal Terapan Teknik Mesin Jurnal Mesin Nusantara Seminar Nasional Hasil Riset dan Pengabdian (SNHRP) Indonesian Journal of Innovation Studies PELS (Procedia of Engineering and Life Science) Sinergi Polmed : Jurnal Ilmiah Teknik Mesin Prosiding University Research Colloquium Academia Open TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Ali Akbar
Teknik Mesin, Universitas Muhammadiyah Sidoarjo
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Transportation Other

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The impact of adding PH adjuster additives on the performance of the radiator in 160 cc Vario motorcycles Naufal Rezza Qur’anal; Ali Akbar; Mulyadi
JTTM : Jurnal Terapan Teknik Mesin Vol 4 No 2 (2023): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v4i2.654

Abstract

The vehicle's power comes from the engine, which uses combustion to transform the chemical energy of the fuel into mechanical energy. The combustion temperature will have an impact on the engine's operating temperature if this situation is not adequately cooled. According to some literature, the PH adjuster additive is a combination of chemicals that works to raise the PH and alkalinity of water to improve the state of the water atoms for the cooling process. However, the process of cooling a vehicle radiator with water from the engine is very hot, so further study is required. Additionally, this PH adjuster may condition the water to your specifications. The purpose of this study is to ascertain the outcome of adding the PH adjuster additive composition to the radiator water of the 160 cc Vario motorcycle. The approach is a descriptive methodology based on the outcomes of experiments. According to research based on the experiments carried out in this study, adding 3% PH Adjuster additives at 1000 rpm will produce the best engine performance. The amount of additives added also had an impact on the radiator performance of the 160 cc Vario motorcycle
Analysis of the impact of exhaust gas emissions on diesel fueled vehicles in view from the year of manufacture (Case study on the Mitsubishi L 300 vehicle) Irfan Dwi Farilla; Ali Akbar; Mulyadi; Rachmat Firdaus
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 1 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i1.916

Abstract

Air pollution is a condition caused by exhaust gas from motor vehicles operating on the highway. To minimize greater air pollution, the government is making preventive efforts by carrying out regular vehicle emission tests which are currently being carried out targeting transport vehicles. This is triggered by the increasing development of the automotive industry so that every year manufacturers produce these vehicles to meet the vehicle market, especially transport vehicle. With the increase in the number of vehicles every year, this is one of the causes of air pollution, so it needs to be controlled. This research aims to determine the effect of vehicle exhaust emissions on the year of vehicle production, in diesel fueled vehicles. The method used is an experiment using two-way Anova analysis on the results of tests carried out on Mitsubhisi L 300 vehicles with a total of 30 test samples, by testing vehicles produced in 2017 - 2022. The results of the research show that older vehicles will produce gas emissions. tall one. This is in accordance with the results of the ANOVA test which accepts the statement that there is at least one vehicle age that has a significant effect on smoke concentration, so it can be concluded that vehicles with an old age, in this case 2017, have the potential to produce high emission gases, therefore preventive efforts need to be taken. to vehicle engines
Enhancing Tubular Bending Precision Using Torch-assisted Softening Technique: Meningkatkan Presisi Pembengkokan Tubular Menggunakan Teknik Pelunakan Berbantuan Obor Iswanto Iswanto; Ribangun Bamban Jakaria; Ali Akbar
Academia Open Vol. 8 No. 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.8.2023.7151

Abstract

Abstract: This study presents a novel approach to improve the precision of tubular bending processes. By integrating a torch burner into the conventional manual bending tool, a method was developed to soften the workpiece prior to bending, effectively reducing defects attributed to forced bending. The research includes manual calculations and SolidWorks simulations for comparative analysis. The proposed tool design, utilizing a 40 mm x 40 mm x 700 mm L-profile iron frame with ASTM A36 material, demonstrated successful bending of pipes with ∅ outside 25 mm and ∅ inside 20 mm, achieving a seamless 180° bend from the initial 0° position. The results highlight enhanced bending accuracy and underline the potential of torch-assisted bending for broader applications in fabrication and manufacturing processes. Highlight: nnovative Integration: Integration of a torch burner with a manual bending tool for enhanced precision in tubular bending processes. Defect Reduction: Softening the workpiece before bending reduces defects associated with forced bending, ensuring higher quality outcomes. Comprehensive Analysis: The study employs both manual calculations and SolidWorks simulations for a thorough comparative analysis, validating the proposed approach's efficacy. Keyword: Precision Improvement, Tubular Bending, Torch-Assisted Softening, Defect Reduction, SolidWorks Simulation
The Effect of Alkalization on the Mechanical Properties of Sansevieria Fiber Bio-Composit: Pengaruh Alkali Basa Terhadap Sifat Mekanik Bio-Komposit Serat Sansevieria Edi Widodo; Ali Akbar; Boy Isma Putra
Academia Open Vol. 8 No. 2 (2023): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.8.2023.7237

Abstract

Alkali treatment of natural fibers has a role in removing hemicellulose and lignin layers. This layer prevents the matrix from bonding with the natural fiber cellulose structure. The use of an inappropriate type of alkali will reduce its effectiveness and can even damage the cellulose layer. This study compared the effectiveness of alkaline NaOH, CaOH and KOH in removing lignin and hemicellulose and their ability to maintain cellulose content. The use of the immersion method in alkaline solutions is well controlled. The FTIR characterization test was used to detect functional group changes, the TGV test to detect heat resistance ability, the XRD test to detect structural changes in crystalline and amorphous properties of sansevieria natural fibers. Furthermore, the tensile test to determine the effect of alkaline treatment on changes in mechanical strength Tensile strength. From the test results it was found that the alkaline NaOH gave the best characteristics by detecting the presence of cellulose, tensile strength and the nature of the crystalline atomic structure. Highlights: Effectiveness of Alkali Types: Comparison of NaOH, CaOH, and KOH effectiveness in removing lignin and hemicellulose while preserving cellulose content. Characterization Techniques: FTIR, TGA, and XRD tests used for functional group changes, heat resistance, and structural properties evaluation. NaOH Superiority: Alkaline NaOH treatment demonstrated best results in maintaining cellulose, enhancing tensile strength, and influencing atomic structure. Keywords: Alkali treatment, Natural fibers, Lignin removal, Cellulose preservation, Tensile strength.
Rotary Corn Roaster for Uniform Heat Distribution: Pemanggang Jagung Putar untuk Distribusi Panas yang Merata Annas Ardiansyah; Ali Akbar
Indonesian Journal of Innovation Studies Vol. 26 No. 1 (2025): January
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i1.2168

Abstract

General Background: Corn roasting remains a widely used food processing activity in small-scale culinary businesses, where conventional roasting methods commonly rely on manual operation and uneven heat circulation. Specific Background: Rotary-based roasting technology offers a mechanical solution to support more consistent heating during the roasting process while reducing operator workload. Knowledge Gap: Existing traditional corn roasting practices still depend on manual turning and manual airflow control, resulting in uneven maturity and higher risk of burning. Aims: This study aims to design and evaluate a rotary corn roasting device equipped with three fan units to support stable heat distribution and consistent roasting performance. Results: The developed device utilized a galvanized steel frame, stainless steel rotary cylinder, and integrated gear mechanism for rotary movement. The system accommodated up to nine corns with a maximum average length of 15 cm. The roasting process required approximately 18–20 minutes at a rotary speed of 13 rpm, while the three fans operated with a total electrical power consumption of 18 watts. The rotary mechanism supported more uniform roasting and reduced manual labor during operation. Novelty: The proposed design combines a manual rotary cylinder system with integrated airflow support using three electric fans in a compact corn roasting unit. Implications: This device provides a practical roasting solution for small-scale corn vendors by supporting stable roasting conditions, energy-efficient operation, and more consistent product quality.Highlights: Three integrated fans maintained stable charcoal combustion during roasting. Rotary cylinder mechanism produced consistent maturity on all corn surfaces. Compact roasting unit processed nine corns within 18–20 minutes. Keywords: Corn Roasting; Rotary System; Heat Distribution; Stainless Steel; Food Processing Equipment
Feasibility of Aluminum Waste Conversion into Automotive Emblem Accessories: Kelayakan Pengolahan Limbah Aluminium Menjadi Aksesori Lambang Kendaraan Bermotor Dwi Febrian Aldy; Ali Akbar
Indonesian Journal of Innovation Studies Vol. 26 No. 2 (2025): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i2.2173

Abstract

General Background: Aluminum waste accumulation is a growing environmental concern due to its persistence and increasing volume from domestic, industrial, and construction activities. Specific Background: Recycling and reusing aluminum waste offer opportunities to reduce environmental burdens while generating value-added products, including automotive accessories. Knowledge Gap: Although aluminum waste utilization has been explored in previous studies, limited research has evaluated the feasibility of converting aluminum waste into car accessories through respondent-based pre-test and post-test assessments. Aims: This study aimed to analyze the feasibility of utilizing aluminum waste for automotive emblem accessories and to validate respondent perceptions before and after product development. Results: Questionnaire data from 97 respondents showed agreement with aluminum waste utilization during the pre-test stage and satisfaction with the resulting product during the post-test stage. Validity testing indicated significance values below 0.05, while reliability analysis produced Cronbach’s Alpha values of 0.877 for the pre-test and 0.908 for the post-test. Analysis of variance further demonstrated that the dominant respondent response in both stages was agreement with the proposed utilization and the developed product. Novelty: The study integrates aluminum waste recycling with a pre-test and post-test feasibility evaluation framework for automotive emblem production. Implications: The findings support the potential application of aluminum waste as a resource for automotive accessories and provide evidence for broader waste utilization initiatives aimed at reducing environmental pollution and creating products with economic value.Highlights: Most respondents agreed with the proposed use of recycled aluminum materials. Product evaluation indicated positive acceptance and satisfaction among participants. Statistical validation confirmed reliable and valid questionnaire outcomes in both assessment stages. Keywords: Aluminum Waste; Automotive Accessories; Feasibility Analysis; Pre-Test and Post-Test; Waste Utilization
STUDI EKSPERIMENTAL PERPINDAHAN PANAS DAN BILANGAN REYNOLDS-NUSSELT PADA COMPACT HEAT EXCHANGER DENGAN SIRIP SPIRAL BERPOTONGAN Muhammad Syahril; Ahmad Syuhada; Hamdani; Muhammad Amin; Ali Akbar; Syamsul Bahri Widodo; Sumawijaya
SINERGI POLMED: Jurnal Ilmiah Teknik Mesin Vol. 7 No. 2 (2026): Edisi Juni
Publisher : Politeknik Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51510/sinergipolmed.v7i2.3264

Abstract

Compact heat exchanger (CHE) banyak digunakan pada sistem pendinginan mesin termal karena memiliki rasio luas permukaan terhadap volume yang tinggi sehingga mampu meningkatkan efektivitas perpindahan panas. Penelitian ini bertujuan untuk menganalisis karakteristik perpindahan panas pada compact heat exchanger dengan variasi konfigurasi sirip spiral berpotongan serta mengevaluasi kinerjanya menggunakan pendekatan bilangan Reynolds–Nusselt. Penelitian dilakukan secara eksperimental menggunakan pipa galvanis berdiameter luar 22 mm dengan panjang laluan 300 mm. Sirip spiral terbuat dari aluminium dengan ketebalan 0,3 mm, tinggi 10 mm, dan jarak antar sirip 30 mm. Variasi konfigurasi meliputi tanpa sirip, tanpa berpotongan, serta sirip spiral berpotongan 2 mm, 5 mm, dan 7 mm. Fluida kerja berupa air panas dengan temperatur inlet konstan 80°C dan laju aliran massa 0,57 kg/s, sedangkan pendinginan menggunakan aliran udara dengan kecepatan 3,59 m/s; 4,45 m/s; dan 5,07 m/s. Hasil penelitian menunjukkan bahwa peningkatan kecepatan udara meningkatkan bilangan Reynolds dari 4.936 hingga 6.971, yang menunjukkan bahwa aliran telah berada pada kondisi turbulen. Seiring dengan peningkatan bilangan Reynolds, bilangan Nusselt juga mengalami peningkatan pada seluruh konfigurasi pengujian, yang menunjukkan meningkatnya intensitas perpindahan panas secara konveksi. Di antara seluruh konfigurasi yang diuji, konfigurasi sirip spiral berpotongan 5 mm menghasilkan kinerja termal terbaik, dengan laju perpindahan panas maksimum sebesar 11.682,7 W dan koefisien perpindahan panas konveksi sebesar 604 W/m²·K. Peningkatan kinerja tersebut dipengaruhi oleh intensifikasi turbulensi aliran serta gangguan lapisan batas termal akibat geometri sirip. Hasil penelitian ini menunjukkan bahwa variasi konfigurasi sirip spiral dan peningkatan kecepatan aliran udara berpengaruh signifikan terhadap kinerja perpindahan panas pada compact heat exchanger.
Exhaust gas emissions in daihatsu granmax vehicles based on the year of manufacture Fikri Setiawan; Ali Akbar; Mulyadi
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 11 No 1 (2024): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v11i1.945

Abstract

Air pollution is a condition caused by exhaust gas from motorized vehicles operating on the highway. To minimize greater air pollution, the government is making preventive efforts by carrying out periodic vehicle emission tests which are currently being carried out. carry out transport targeting vehicles. The research aims to determine the year of the vehicle that produces the dominant CO (carbon monoxide) and HC (hydrocarbon) exhaust emissions which were tested based on vehicle year from 2017 to 2022, with the type of gasoline-fueled vehicle, in this case the Daihatsu granmax. The method used is experimental using Manova analysis of 30 samples used with variations in data taken from testing CO and HC exhaust emissions on 30 samples with 5 vehicles each in each year of production. The results of the research that has been carried out show that the emission test results on sample data show the highest CO exhaust emissions in vehicles in 2017 and the lowest in vehicles in 2021, while the HC test results in vehicles in 2017 are the highest and continue to decline to the lowest point in vehicles in 2022, this provides a conclusion: Vehicles produced longer have the potential to produce high exhaust emissions, while vehicles produced younger do not cause exhaust emissions
Analisis Pengaruh Nilai Kalor Batubara dan Laju Feed Water terhadap Efisiensi Boiler Fire Tube 10 Ton Menggunakan Metode Langsung Rachmat Firdaus; A’rasy Fahruddin; Iswanto; Ali Akbar; Muhammad Ibrahim
Jurnal Mesin Nusantara Vol 9 No 1 (2026): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v9i1.26619

Abstract

Boiler adalah alat konversi energi yang mengubah energi bakar menjadi energi panas untuk menghasilkan uap. Dalam proses produksi minyak kelapa, PT. XXX menggunakan boiler tabung api berbahan bakar batubara sebagai uap. Tujuan penelitian ini adalah untuk menganalisis pengaruh nilai kalor batubara dan laju feed water terhadap terhadap efisiensi boiler tabung api 10 ton menggunakan teknik langsung. Data penelitian berasal dari lembar catatan operasi boiler untuk tiga periode pengamatan yaitu 3 Februari, 6 Februari, dan 9 Februari 2025, dengan durasi pengamatan 24 jam. Nilai batubara yang digunakan sekitar 24.001 kJ/kg, 22.644 kJ/kg, dan 23.121 kJ/kg. Menurut hasil penelitian, batubara dengan nilai kalor 24.001 kJ/kg menghasilkan efisiensi rata-rata tertinggi sebesar 78%, sedangkan batubara dengan nilai kalor 23.121 kJ/kg menghasilkan efisiensi rata-rata terendah sebesar 72%. Suhu udara rata-rata berkisar antara 83,0°C, 77,4°C, dan 73,4°C selama berbagai periode pengamatan. Temuan analisis menunjukkan bahwa peningkatan suhu dan suhu batubara feed water dapat meningkatkan efisiensi boiler, sedangkan peningkatan laju feed water berpotensi menurunkan efisiensi boiler. Akibatnya, efisiensi boiler tidak hanya dipengaruhi oleh kualitas bakar tetapi juga oleh kondisi operasi sistem. Oleh karena itu, perlu dilakukan penyesuaian terhadap kedua faktor tersebut untuk mencapai kinerja boiler yang optimal.
Evaluasi Kinerja Pompa Booster Berdasarkan Analisis Head Loss dan Total Dynamic Head pada Sistem Distribusi Air Bersih Gedung Bertingkat ali akbar; Rachmat Firdaus; Metatia Intan Mauliana; Diyas Robikh Arafat
Jurnal Mesin Nusantara Vol 9 No 1 (2026): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v9i1.26670

Abstract

Pada sistem distribusi air bersih di gedung bertingkat, pompa pendorong (Booster pump) diperlukan untuk mengkompensasi perbedaan ketinggian dan kehilangan energi pada sistem perpipaan. Kinerja pompa sangat dipengaruhi oleh head loss akibat gesekan sepanjang pipa dan fitting yang digunakan. Tujuan penelitian ini adalah untuk mempelajari kinerja pompa pendorong CDX/I 120/20 IE3 pada sistem distribusi air bersih menuju tangki atap Gedung Bank BUMN Surabaya dengan perhitungan head loss dan kesesuaian kapasitas pompa dengan kebutuhan sistem. Metode penelitian yang digunakan adalah observasional dan analitis, meliputi pengukuran dimensi pipa, identifikasi fitting, dan perhitungan parameter aliran menggunakan persamaan Darcy-Weisbach dan koefisien kehilangan energi fitting. Hasil penelitian menunjukkan bahwa total head loss sistem adalah 11,06 m, yang terdiri dari head loss mayor sebesar 9,58 m dan head loss minor sebesar 1,48 m. Kehilangan energi utama terjadi pada pipa berdiameter 1,5 inci dengan kontribusi sebesar 61,7% terhadap total head loss. Perhitungan Total Dynamic Head (TDH) memberikan nilai 39,06 m. Sebaliknya, head maksimum pompa adalah 40,50 m. Ini berarti margin head yang tersedia hanya 1,44 m. Hasil menunjukkan bahwa pompa masih mampu memenuhi kebutuhan distribusi air ke tangki atap pada ketinggian ±28 m, meskipun bekerja mendekati batas kapasitas operasionalnya. Oleh karena itu, optimasi sistem perpipaan diperlukan untuk meningkatkan kinerja sistem dan keandalan distribusi air.
Co-Authors A'rasy Fahruddin Achmad Febriyan Ikhsanudin Ahmad Syuhada Ajitiyo Dananjoyo Alfiansyah Satrio Wicaksono Annas Ardiansyah Ardhi Shefta Fernanda Bayu Dwi Laksana bhima endra wira yudha Boy Isma Putra Diyas Robikh Arafat Dwi Febrian Aldy Edi Widodo Fikri Setiawan Fitri Nur Latifah Hamdani Indah Sulistiyowati Irfan Dwi Farilla Iswanto Iswanto Metatia Intan Mauliana Metatia Intan \ Mauliana Mohamad Affan Rahmadin Mohammad Afif Fajar Muchamad Reysa Pahlewi Muhamad Ridwan Yunus Muhammad Amin Muhammad Ibrahim Muhammad Syahril Muhammad Zainal Abidin Mulyadi Mulyadi Naufal Rezza Qur’anal Paramitha Amelia Kusumarwani Prantasi Harmi Tjahjanti Rachmat Firdaus Rexy Eca Fernanda Ribangun Bamban Jakaria Rizky Dwi Aldiantofas Satria Agung Wibisono Satria Candra Laksmana Singgeh Adi Wibowo Sumawijaya Syamsul Bahri Widodo