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All Journal Jurnal Rekayasa Material, Manufaktur & Energi Infotekmesin IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) IRA Jurnal Pengabdian Kepada Masyarakat Nozzle : Journal Mechanical Engineering
Amin Nur Akhmadi, Amin Nur
Politeknik Harapan Bersama Tegal
Aerospace Engineering Automotive Engineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation Other

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RANCANG BANGUN RASIO GEAR TERHADAP KECEPATAN PENGEROLAN PIPA Suprihadi, Agus; Akhmadi, Amin Nur; Qurohman, M. Taufik
Infotekmesin Vol 9, No 01 (2018): Infotekmesin, Januari 2018
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (850.488 KB) | DOI: 10.35970/infotekmesin.v9i01.9

Abstract

The basic principle of metal formation is a process that is done by giving shape changes on the workpiece. This shape change can be done by providing an outer force resulting in plastic deformation. The application of this metal formation can be seen in some examples such as rolling, bending, forging, extruding, wire drawing, deep drawing, and so on. In the process of formation of this metal is also used tooling (bending) whose function gives style to the workpiece, and direct the change of shape. Knowing the speed of the power forwarding system on the pipe roller machine starting from the power source until power is used as the work cycle, and to know the type of belt, the length of the belt used on the pipe roll machine. From this research can be concluded that: (1) In bending the thickness of 4 mm pipe the required power is 582.4 N with power of 0.4 hp then the motor required 1 hp, the diameter of the pulley used is 2 inch for motoran and 8 inch for the pivot reducer, belt used type B with length 44 inch, (2) To reach the rotation of ± 2 rpm ie pulley diameter used with the ratio of pulley ratio is 1: 4, the reducer is used with the value I = 60 and sprocket ratio 1: 3.
Paralelisme Konsumsi Bahan Bakar Pertalite Dengan Bahan Bakar Gas LPG 3 Kg Pada Mesin Bensin Pompa Air Starke Gwp50 Akhmadi, Amin Nur; Usman, Mukhamad Khumaidi
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 2 No 3 (2023): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v2i3.83

Abstract

A fuel is a compound that contains hydrocarbon elements. Pertalite is a fuel quality that has an Octane Research Number 90. LPG is made from petroleum gas material formed from Propane and Butane. The water pump drive engine is a pertalite-fueled internal combustion motor but may replace with LPG. The main reason is the cheap purchase price. Using LPG gas as a substitute for pertalite fuel is interesting research that will be conducted to conduct experiments testing pertalite fuel consumption with LPG gas. The results obtained in this study, namely using rice field water pumps with LPG gas fuel, resulted in lower consumption than pertalite fuel by 32% when without load and 28% when with the load.
Rancang Bangun Mesin Steam Jet Mini Portable Power Spayer Akhmadi, Amin Nur; Fatkhurrozak, Faqih; Sanjaya, Firman Lukman
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 1 (2024): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i1.95

Abstract

This research discusses the mini portable power spayer steam jet machine by testing it with a flow meter to find out the specifications. This machine is designed to be easily moved from one place to another. This machine has a pump that can create high water pressure. This steam jet machine can be operated using a DC motor. This machine is usually built with materials that are resistant to corrosion and durable for long-term use. To create a mini portable power spayer steam jet machine that has a simple, cheap, easy to operate and maintain system, this machine must be designed so that easy to move from one place to another, both indoors and outdoors, must be able to produce water vapor at a high enough pressure to clean dirt, the design must consider safety aspects to protect users from injury or potential danger, by designing the machine mini portable power spayer pump with dimensions that match those on the market, realized with real and existing designs and products, by testing with a flow meter, the test was carried out with a spray result of 6 liters/minute according to specifications. Making a design for a mini portable power spayer steam engine pump with an inventor that is realized is the same as choosing a product on the market. The process of testing the mini portable power spayer steam machine with a flow meter measuring tool produces a water jet pressure of 6 liters/minute, when tested with a flow meter spayer gun in a straight water jet pressure position.
Penerapan Pentingnya Keselamatan Dan Kesehatan Kerja (K3) Pada Bengkel Las Umum Kelurahan Debong Kulon Kecamatan Tegal Selatan Kota Tegal Akhmadi, Amin Nur; Usman, Mukhamad Khumaidi
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 1 No 3 (2023): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v1i3.64

Abstract

Occupational safety and health are very important things in the work environment. They cover a wide range of measures and policies aimed at protecting employees from the risk of injury, illness, or other dangers that may arise in the context of their work. This involves identifying potential risks in the workplace, training for employees, and safe use of equipment. Occupational safety and health (K3) in the welding workshop plays a very crucial role because the welding process involves various potential risks and dangers that can have an impact on workers for several reasons. After all, it can prevent and reduce the risk of accidents and injuries, protect workers' health, and comply with regulations. And safety standards, increasing productivity and efficiency. To implement the tri dharma of higher education for DIII Mechanical Engineering lecturers, providing knowledge and skills regarding the application of the importance of occupational safety and health for employees of the General Welding Workshop. This service uses a direct practical presentation method in the workshop where the chairman gives directions to the welders to use work safety equipment directly; from this activity, it can be found that most welders always ignore work safety in terms of eye protection and hand and head protection. It was concluded that there was an increase in knowledge among residents of Debong Kulon Village, especially welding workshop employees, about the importance of Occupational Safety and Health / K3 for the safety and health of both humans and the environment.
Penerapan Penggunaan Alat-alat Perbengkelan Pada Bengkel Rita Jaya Motor Pesurungan Lor Akhmadi, Amin Nur; Budi, Sigit Setijo; Ariyanto, Nur Aidi
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 2 No 1 (2024): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v2i1.97

Abstract

The potential use of workshop tools is often not in accordance with the SST and is related to speed work in work which includes servicing the carburetor, fuel system, steering system, electrical system so that in workshop work there are often delays in dealing with customers such as tune ups which should be handled quickly but with a lack of tools the work becomes late. Providing knowledge about existing equipment in workshops, providing skills in using multifunctional tools for repairs, improving the quality of human resources, especially mechanics. This service uses a direct, practical presentation method at the workshop where the chairman gives directions to customers and surrounding mechanics to take part in the training using multifunctional key tools. From this activity it can be found that in the workshop, when repairs are busy, customers really complain about how long it takes to repair their motorbikes because the equipment does not comply with operational procedures, and there are no SST tools. With community service activities at the Rita Motor Pesurungan Lor workshop, it provides knowledge, understanding and innovation regarding efficient and multi-functional workshop tools. Speed up employee work in service with this multi-functional tool so that customers are satisfied with its performance.
Pelatihan Perakitan Mobil Listrik bagi Siswa SMK N 1 Adiwerna Usman, Mukhamad Khumaidi; Fatkhurozzak, Faqih; Sanjaya, Firman Lukman; Aryanto, Nur Aidi; Akhmadi, Amin Nur; Budi, Sigit Setijo
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 2 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v2i2.116

Abstract

One very important component of an electric car is the battery. Batteries are used as a current source for the entire electrical system and as a place to store electrical energy during the charging process. The power consumption of an electric car with a brushed DC motor drive. To find out the power consumption at a certain constant speed and the battery capacity used, the maximum distance that can be traveled can be calculated. The partner's problem is that there are no activities to assemble electric cars and calculate battery requirements for the power required by electric car. The implementation method uses the method of socialization and training or direct practice. The socialization method is carried out by inviting vocational school students to the mechanical engineering laboratory of Harapan Bersama Polytechnic to be given an explanation and knowledge about the basic principles of electric cars, the main components of electric cars and how to calculate the power required by electric car to be assembled, the activity will be held on June 9 2022 with the result being an increase in students' skills in assembling electric cars. Knowledge of calculating battery power and assembling batteries according to electric car needs, as well as correct electric car installation. The output resulting from this training is that students at SMK N1 Adiwerna have insight into battery circuits and electric car installations.
Pengaruh Kecepatan Putaran dan Pemakanan terhadap Permukaan Baja ST 41 pada Mesin Bubut Akhmadi, Amin Nur; Usman, Mukhamad Khumaidi; Sanjaya, Firman Lukman
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.157

Abstract

This study discusses the effect of feed rate and machine rotation speed on the surface roughness of ST 41 steel in the flat turning process. The aim is to determine the relationship between variations in rotation speed (100 rpm, 300 rpm, and 500 rpm) and feed rate on the final surface results of the workpiece. The method involves cutting tests on ST 41 steel specimens with a diameter of 25 mm and a length of 400 mm with various rotation speed variations. The results show that at low rotation speed (100 rpm), the surface of the workpiece tends to be rough. The surface becomes better at medium speed (300 rpm), while at high speed (500 rpm), the surface results are smoother. These findings indicate that increasing rotation speed contributes to a decrease in surface roughness. Thus, higher rotation speeds can improve the quality of turning results.
Penerapan Penggunaan Bahan Bakar Gas Elpiji 3 kg untuk Mesin Perontok Padi Akhmadi, Amin Nur; Budi, Sigit Setijo; Fatkhurozzak, Faqih
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 2 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v2i3.156

Abstract

This community service activity discusses efficiently converting fuel energy for rice thresher machines by replacing it with 3kg melon gas fuel. For the implementation of the Tri Dharma of Higher Education for Lecturers of the DIII Mechanical Engineering Study Program, Harapan Bersama Polytechnic. Providing knowledge and skills about using 3 kg LPG gas to replace gasoline fuel in diesel rice thresher machines. Improving the quality of human resources, especially for farmers. As an implementation of the MOU between the DIII Mechanical Engineering Study Program, Harapan Bersama Polytechnic, Tegal and the local village. The process of implementing PKM activities begins with preparation in the form of a survey of farmer partners to find out what problems are faced by farmers and then find solutions to the problems; from the solutions obtained, it turns out that farmer partners need training on the efficiency of using rice threshers that use 3Kg melon LPG gas fuel, so it is planned to be arranged for an activity on training the use of 3 kg gas as a fuel as a substitute for gasoline. With the presence of a gas converter tool, which can change gasoline fuel into 3kg of gas fuel, people are very happy because it can help provide fuel efficiency for diesel rice threshing machines so that they are not wasteful.
Analisis Kekuatan Rangka Bike Lift Terhadap Beban Alat Dan Kendaraan Akhmadi, Amin Nur; Usman, M Khumaidi; Hendrawan, Andre Budhi
Rekayasa Material, Manufaktur dan Energi Vol 3, No 2: September 2020
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v3i2.5269

Abstract

To lift a vehicle on a bike lift, a strong frame is needed. A bike lift is a tool for lifting a motorcycle and at the same time, it can be said as a work table. Most of the servicing and repair work of motorbikes is done under the hands, so to do this the mechanic has to sit or squat. By using a bike lift, the height of the motorbike can be adjusted according to the mechanical body posture, so that according to the service work can be done in a comfortable body position without having to squat for a long time. The purpose of this research is to get a strong frame, especially on pins that are exposed to loads from the frame and vehicles. This research uses the calculation of the load that occurs at each load point and calculates the shear stress that occurs at each load point and performs a tensile test on the pin material. The results of the study, the calculation of the largest shear stress, namely 13.26 N, occurred at the bottom pin position with a pin diameter of 10 mm. Meanwhile, from the results of the pin material testing, the shear stress in the safe material range is 354.24 N / mm2. So it can be concluded that the results of the calculation of shear stress that occurs on each bike lift frame pin using solid iron pipe or axles with a diameter of 16 mm and 10 mm, the largest shear stress that occurs on the pin is 13.26 N at the pin position 10 mm. Meanwhile, from the test results of the iron used for the pin, the shear stress in the safe range of the material is 354.24 N / mm 2. So it can be concluded that the use of solid steel pipe for axles with a size of 10 mm and is exposed to the largest shear stress from the frame load, namely, 13.26 N /mm2 is safe to use and strong to withstand the load given to the bike lift.
Analisis Kekerasan Pada Roda Gigi Hasil Pengerasan Menggunakan Pemanas Induksi Faisal, Reza Arfi; Ariyanto, Nur Aidi; Faoji, Ahmad; Akhmadi, Amin Nur
Rekayasa Material, Manufaktur dan Energi Vol 3, No 2: September 2020
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v3i2.5274

Abstract

Vehicles with engine characteristics that are capable of producing large torque to accelerate the vehicle. The gear is one of the vehicle engine components in the transmission system which functions to transmition power from the drive shaft to the shaft to be driven. For gear hardening, many IKM have limited capabilities. One of the hardening tools that can be used by IKM is an induction heating device. The purpose of this study was to analyze the hardness of the AISI P20 material gears after induction hardening of the gear specimens before and after treatment by taking induction hardening test data using variations of the output current, namely 820A and 1100A and coils 2 and 3 turns. The results of this study obtained the highest hardness testing parameters, namely in the gear specimen 4 using 3 coils, the measured frequency was 29 kHz, the maximum position output current was 1100A. heating time for 32 seconds, the cooling medium is quench oil and the maximum hardness value is 1561 HV.
Co-Authors Ariyanto, Nur Aidi Aryanto, Nur Aidi Emmy Nurhayati Faisal, Reza Arfi Faoji, Ahmad Fatkhurozzak, Faqih Fatkhurrozak, Faqih Hapzi Ali Hendrawan, Andre Budhi Lestari, Fitri Ayu mukhamad khumaidi usman Nashrudin, Hafidz Qurohman, M. Taufik Sanjaya, Firman Lukman Setijo Budi, Sigit Sigit Setijo Budi, Sigit Setijo Usman, M Khumaidi