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Piston: Journal of Technical Engineering
Published by Universitas Pamulang
ISSN : 25413511     EISSN : 26862247     DOI : http://dx.doi.org/10.32493/pjte.v5i2.19158
Core Subject : Engineering,
Aerospace Engineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Ansor Salim Siregar, Mulyadi Mulyadi, Syaiful Arief Analisis Kegagalan Laminasi Komposit Epoksi/Serat Karbon Pada Sayap Pesawat Tanpa Awak DOI: 10.32493/pjte.v5i2.18596 Parlindungan Pandapotan Marpaung, Herbert H. Rajagukguk Energi Mekanik Penggerak Poros Magnet Rotor Alternator untuk Pembangkit Listrik AC DOI: 10.32493/pjte.v5i2.19158
Arjuna Subject : Energi (semua kategori) - Energi (Lain-Lain)
Articles 219 Documents
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Utilization of GPS Data of Logistic Truck as a Delivery Reporting System Istas Pratomo Manalu; Albertinus Daniel Siahaan; Okaria Veronika Simanjuntak; Dedy Samhaz Pardede; David Calvin Tobing
Piston: Journal of Technical Engineering Vol 6, No 1 (2022)
Publisher : Prodi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v6i1.22433

Abstract

We propose a tracking system that can provide information from the truck coordinate analysis. Firstly, GSM will transmit the coordinates of the truck in real time via HTTP protocol to a website that has been hosted using shared hosting and displays a travel map on the Map Box API application. We also use MYSQL as a storage of truck coordinates. Reports will be generated after the truck arrives at the company. For system accuracy level, we set the delivery duration to the database every 10 seconds so that the generated path is closer to the original path. We compared our system with google maps to observe how accurate the system was built. The length difference of the track is 0.01 Km. The system also shows a very small deviation of starting point is 0.111322 meters and at the end point is 0.729938354 meters. While, the report contains truck ID, driver's identity, departure time, exact time, arrival time, distance, type of goods, quantity of goods, origin, destination, service, date, initial odometer, used odometer which later the results can be printed into a final report of truck usage. 
Pembuatan dan Karakterisasi Mullite Berbasis Abu Vulkanik dan Alumina Eko Arief Setiadi; M. Hasan Abdul Malik Karimullah; Isamatul Lisa; Sulanjari Sulanjari; Perdamean Sebayang
Piston: Journal of Technical Engineering Vol 1, No 2 (2018)
Publisher : Prodi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v1i2.3188

Abstract

Telah berhasil dibuat keramik berbasis mullite dari abu vulkanik dan Al2O3 dengan metode paduan mekanik dan sintering. Preparasi dimulai dengan proses milling abu vulkanik dan Al2O3. Ukuran diameter rata-rata serbuk hasil milling diperoleh nilai 3,54 µm. Serbuk hasil milling kemudian dikompaksi dan disinter dengan variasi suhu 900, 1000 dan 1100 °C. Hasil uji densitas dan porositas menunjukkan bahwa semakin tinggi suhu sintering maka nilai densitas akan semakin tinggi sedangkan porositasnya semakin rendah. Hasil analisa XRD menunjukkan bahwa terdapat tiga fasa sampel yaitu mullite sebagai fasa dominan serta hematit dan SiO2 sebagai fasa sekunder. Hasil nilai kekerasan sampel menunjukkan bahwa semakin tinggi suhu sintering maka nilai kekerasannya juga semakin tinggi. Nilai optimum sampel diperoleh pada sampel yang disinter pada suhu 1100 °C dengan nilai densitas, porositas dan kekerasan masing-masing sebesar 2,54 g/cm3, 5,21% dan 283,16 HV.
Peningkatan Kualitas Batubara Peringkat Rendah dengan Teknik Flash Drying Ahsonul Anam
Piston: Journal of Technical Engineering Vol 4, No 1 (2020)
Publisher : Prodi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v4i1.7353

Abstract

Batubara peringkat rendah biasanya ditandai dengan kandungan air yang tinggi dan nilai kalor yang rendah.Agar kandungan airnya turun dan nilai kalornya naik, maka perlu dilakukan pengolahan terlebih dahulu sebelum digunakan. Ada banyak teknologi coal upgrading, dengan menggabungkan penggunaan uap air dengan tekanan, tentunya dengan keunggulan dan kekurangan masing-masing. Teknik flash drying memberikan alternatif teknologi peningkatan kualitas batubara dengan memanfaatkan udara yang tidak terlalu panas dan tekanan yang rendah sehingga biaya operasonalnya menjadi lebih rendah. Percobaan yang dilakukan menggunakan teknik flash drying mampu menurunkan kandungan air batubara secara signifikan, namun kandungan air dalam produk berubah sesuai dengan kondisi lingkungan.
Analisis Kegagalan Laminasi Komposit Epoksi/Serat Karbon Pada Sayap Pesawat Tanpa Awak Ansor Salim Siregar; Mulyadi Mulyadi; Syaiful Arief
Piston: Journal of Technical Engineering Vol 5, No 2 (2022)
Publisher : Prodi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v5i2.18596

Abstract

This study aims to analyze the initial failure value using the Tsai – Wu criteria from the wing skin of an unmanned aircraft with the Eppler 214 airfoil model. The study was carried out using computer modeling with Abaqus software. The material used is an epoxy composite which is carbon fiber. The composites used in the wing skins have two different arrangement sequences, namely the fiber layer arrangement sequence 1 [00/900]8s and the layer sequence 2 [00/+450/-450/900]2s. The load given to the wing is a pressure of 0.40077 MPa. The results for the fiber layer sequence 1 [00/900]8s at the maximum stress distribution are 5.067 x 104 MPa and in the fiber layer sequence, 2 [00/+450/-450/900]2s the maximum value is 4.205 x 104 MPa. While the sequences consist of fiber layer 1 and layer 2 sequence layers, the Tsai – Wu failure meets the Tsai – Wu failure criteria because almost all of them fail
The Effect of Coil and Spark Plug Variation on Emission, Power and Torque on Vixion 150 Satrio, Hutomo Jiwo; Pramanda, Wibi
Piston: Journal of Technical Engineering Vol. 7 No. 2 (2024)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v7i2.34228

Abstract

The development of technology in vehicles continues to be developed to meet human needs and be environmentally friendly. One technology that is still being developed is the use of spark plugs and coils. The function of spark plugs in motorized vehicles is to spark sparks caused by the electric voltage generated by the coil. Various kinds of coil produce different high voltage. This research uses a Yamaha Vixion 150 CC, 1 cylinder, four-stroke motorcycle. The research was conducted by providing spark plug and coil variations including standard U24ESR-N (Denso) spark plugs, 0.4mm Iridium spark plugs, and Brisk Silver spark plugs. Coil variations were also given including 3C1 H2310 spark plugs and Uma Racing spark plugs. The data taken includes a comparison of emissions produced, torque, and power. The highest power at RPM 8500 was generated by the U24ESR-N spark plug (Denso) with the use of the Uma Racing coil type of 8.69 kW. Spark plug and coil variations will also determine torque. The highest test on the use of Uma Racing coil and Brisk Silver spark plug at 6500 RPM engine speed produces a value of 9.35 Nm. The results also show changes in emissions produced such as CO2, CO, HC, and O2 emissions. The use of 0.4mm Iridium spark plugs with 3C1 H2310 coil and Brisk Silver spark plugs with 3C1 H2310 produces high voltage resulting in higher CO and HC gas production
Modification of Grass Chopper Blade from Leaf Spring with Coconut Shell Charcoal Addition by Carburizing Treatment Febritasari, Rosadila; Sutrisno, Tito Arif; Jikwa, Herlan Hafiidh; Berta, Dhea Rosali; Artayasa, I Made Pande; Nahak, Bernadino Arsinyo; Yordan H. P.I, Yohanes
Piston: Journal of Technical Engineering Vol. 7 No. 2 (2024)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v7i2.34439

Abstract

A grass chopper is a machine used to chop grass and soft stems. In the grass chopping process, a sharp blade is required. The current problem is the blade get wear due to repeated sharpening of the blade, resulting in a non-uniform texture of chopped grass and often found some large grass sizes. Therefore, this research focuses on blade material engineering. This research was conducted by carburizing at 700°C for 60 minutes and adding carbon from coconut shell charcoal followed by quenching using water cooling media. The blade was made from a leaf spring made of JIS-SUP 9 steel. The results showed 106% of enhancement in carbon composition after the blade was treated by carburizing. This carbon composition enhancement affects the performance of the blade, namely higher hardness as shown by a 175% increase in hardness value and a 96.4% lower wear rate than the untreated blade.
Mechanical and Thermal Properties Analysis on Bitumen Mixture with Additives: HDPE, PP and Lignin Junior, Adream Bais; Prawira, Yermia Andri; Chalid, Mochamad; Taning, Ahmad Z.; Nugraha, Adam Febriyanto
Piston: Journal of Technical Engineering Vol. 7 No. 2 (2024)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v7i2.35464

Abstract

This study focuses on enhancing the performance and sustainability of asphalt materials in road construction by recycling High-Density Polyethylene (HDPE). Polypropylene (PP) and lignin as additives in bitumen. The Hot Melt Mixing method is employed to investigate the impact of different concentrations of HDPE, PP, and lignin on bitumen properties. Key properties such as ductility, penetration, softening point, and thermal behavior are analyzed, providing valuable insights into the potential of these additives to enhance bitumen performance. The findings demonstrate that higher concentrations of HDPE and PP result in reduced penetration depth, indicating increased hardness. The addition of lignin enhances penetration depth, contributing to the flexibility and performance of the bitumen mixture. Moreover, thermal analysis offers valuable information about the thermal behavior and stability of the bitumen-plastic-lignin blends, shedding light on their compatibility and interactions. This research contributes to the ongoing efforts in road construction and pavement engineering by exploring sustainable solutions that not only address plastic waste challenges but also improve the performance and durability of bituminous materials, making it a crucial step towards environmentally responsible and long-lasting asphalt pavements.
LoRa-based IoT Device for Water Quality Monitoring (Case Study: Lake Toba) Gloria Polly, Victori Steev; Manalu, Andriono; Simbolon, Kiki Tristianti; Manalu, Istas Pratomo
Piston: Journal of Technical Engineering Vol. 7 No. 2 (2024)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v7i2.35854

Abstract

Lake Toba, the largest lake in Indonesia, faces water pollution problems due to many sources of household waste, fertilizer waste from rice fields, and fish feed waste. Therefore, a water quality monitoring system is needed to warn the public and visitors early before they carry out recreational activities or use water from the lake. This research aims to build a system that can monitor the water quality of Lake Toba in real-time using LoRa technology, as well as analyze the water quality of Lake Toba with the parameters pH, dissolved oxygen, temperature, and turbidity. As a result, we created a water quality monitoring system and obtained water quality analysis results from 3 locations that are always busy with tourists. The results of measurements at Pantai Pasir Putih received a temperature range of 25.5°C to 28.5°C, turbidity ranged from 4.1 to 5.5 NTU; pH levels varied between 6.8 to 7.2, dissolved oxygen levels ranged from 8 .0 mg/L to 9.0 mg/ L. The results of measurements at Siregar Aek Nalas recorded temperatures ranging from 25°C to 28°C, turbidity levels of approximately 11.49 NTU and 14.65 NTU, pH levels fluctuating between 9 and 11, dissolved oxygen levels ranging from 29 mg/L to 32 mg/L. The temperature obtained for Pantai Lumban Bulbul was 25°C, turbidity ranged from 0.62 NTU to 2.60 NTU, the pH level was also consistently measured at 8, and dissolved oxygen levels were recorded at 9-10 mg/L.
Design and Implementation of Rain Gauge Measurement using Ultrasonic Sensor HC-SR04 (Case Study using Ombrometer Method) Simatupang, Frengki; Nainggolan, Waldo Owen
Piston: Journal of Technical Engineering Vol. 7 No. 2 (2024)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v7i2.36619

Abstract

There are several types of rainfall measurement method, such as tipping bucket, siphon, rain water weight and other various methods. This research developed the alternative and affordable method to measure the rain gauge using ultrasonic sensor. The method used to convert the volume of collected rain water to the level of a rain gauge is Ombrometer method. Ultrasonic Sensor HC-SR04 is chosen as a sensor to measure the water level in the collected rain water tank because it categorized as a low-cost sensor. Measuring the level of rainfall using an ultrasonic sensor is influenced by the design of the reservoir tank and also the resolution of the ultrasonic sensor. This research found that the difference the measurement using ultrasonic sensor between ombrometer formula is sufficiently linear with the difference average at 32.63%. The lookup table method is implemented to linearize the measurement based on the ombrometer value method. By using the linearized value, the design is capable to measure light rain category because the design has the sensitivity/resolution measurement of rain gauge on 0.48 mm. This research also found that the average value of the measurement using the ultrasonic sensor for each measured volume water injected to the tank using this design and use this value as a trigger to send the actual measurement result to the users. All parameters from this system are sent using Wi-Fi connectivity to the server and can be monitored using Online Web Dashboard.
Unreal Engine Based MCS Program Using Microcontroller Wemos D1 Mini, MPU-9250 Sensor and UDP Protocol Simatupang, Frengki; Manalu, Istas Pratomo
Piston: Journal of Technical Engineering Vol. 8 No. 1 (2024)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v8i1.40210

Abstract

The Motion Capture System (MCS) is a series of steps involving the capture, processing, and mapping of human, animal, or object movements into virtual characters. This process includes motion recording, data processing with computers, and mapping the results into digital models. This article discusses the use of MCS for realistically reconstructing and simulating behavior, which is valuable in various applications such as entertainment, animation, computer games, sports, and rehabilitation. MCS faces challenges in accurately capturing the diversity and complexity of body movements, requiring advanced hardware and software. Unreal Engine, a development platform known for its ability to produce high-quality graphics and realistic physics systems, is often used to integrate MCS. The MPU9250 sensor, a 9-axis inertial sensor combining an accelerometer, gyroscope, and magnetometer, is used in this project to detect linear motion, rotation, and orientation with high accuracy. This research aims to develop an MCS program based on Unreal Engine using the MPU9250 sensor and the UDP protocol, with the Wemos D1 Mini as the client module to process and transmit sensor data via Wi-Fi. This process involves collecting sensor data, transmitting data via UDP, and processing the data in Unreal Engine to control the movement of objects or characters. Sensor calibration is performed to obtain accurate reference values, and the collected data is used to calculate pitch, roll, and yaw values. This data is then sent to Unreal Engine to display animations corresponding to human movements. Testing shows that the generated movements align with those demonstrated, although there are minor acceptable errors. This research highlights the importance of combining sensor technology and software to produce an accurate and responsive motion control system, providing an interactive and realistic user experience.

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