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All Journal Jurnal Engine: Energi, Manufaktur, dan Material Jurnal Mekanik Terapan
Agustinus Winarno
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Automotive Engineering Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Pengaruh Temperatur dan Durasi Preheat terhadap Cacat Produk pada Mesin Injection Molding Manual Apriawan Nur Huda; Ignatius Aris Hendaryanto; Benidiktus Tulung Prayoga; Agustinus Winarno
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1867

Abstract

Plastic objects are widely used and found in all places, from food packaging, household appliances, and electronic devices to vehicles. Generally, plastic is used as a substitute for glass, wood, and metal. Over time, the use of plastic has become an environmental issue. To address the problem of plastic waste, the government has introduced the 3R (Reduce, Reuse, and Recycle) initiative. One of the easily used tools in the recycling process is the injection molding machine. This process often results in product defects such as Short Shot, Flow Mark, and Sink Mark. The temperature in the injection process affects the melting point of the plastic and can influence various aspects of the manufacturing process and the final quality of plastic products. The heating duration affects the viscosity of the plastic material to be injected. The research conducted is experimental, and several tests were performed to determine the effect of temperature variation and preheat duration of the injection molding machine on product quality. Simulation results show that the higher the temperature used, the greater the resulting sink marks. The test results indicate that improper temperature and preheat duration usage will affect the occurrence of product defects. A temperature that is too low can result in high pressure during the injection process, preventing the material from filling the cavity maximally. Preheat duration and temperature are critical factors in the plastic manufacturing process, affecting melting points, flow quality, dimensional stability, and the mechanical properties of the final product. Proper control of heating duration, temperature, and other process conditions is essential to produce high-quality, defect-free plastic products. Keywords: Injection Molding, Preheat, Temperature
Analisis Kekuatan Struktur Pada Desain Traction Rod Lokomotif Kereta Api Dengan Metode Finite Element Analysis (FEA) Irsad Makhbulloh Ilyasa; Ignatius Aris Hendaryanto; Handoko; Agustinus Winarno
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1929

Abstract

The structural strength of locomotive bogies is crucial for bearing operational loads and absorbing engine vibrations to efficiently transmit torque to the train wheels. The traction rod, a critical component in this system, plays a key role in transferring power from the main engine to the locomotive wheels. With the CC300 locomotive engine producing 2.200 hp, the traction rod experiences significant loads, necessitating regular maintenance. Given that this component is currently imported, the company is striving to redesign the traction rod to ensure strong structural integrity for local production, reducing dependency on imports and optimizing maintenance costs. The redesign involves adding structures to the existing design to even out stress distribution and enhance safety factors. Finite Element Analysis (FEA) is utilized to compare the structural strength between the original and redesigned designs, resulting in significant improvements in load-bearing capacity and deformation reduction. Simulation results show variations in stress, deformation, and safety factors among the original design, the redesign by the company, and the redesign by the researchers. The original design exhibits a stress of 194,64 MPa, deformation of 4,2817 mm, and a safety factor of 1,2844. The company's redesign achieves a stress of 438,37 MPa, deformation of 3.4356 mm, with a safety factor of 0,5703. Meanwhile, the researchers' redesign shows a stress of 154,05 MPa, deformation of 4,4812 mm, and a safety factor of 1,6288.
Perancangan Shaking Rig Simulator Irregularities Sarana dan Prasarana Kereta Api Paresya Arva Seta; Agustinus Winarno; Budi Basuki; Ignatius Aris Hendaryanto
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1980

Abstract

The train is one of the main modes of transportation used in various countries in the world, including Indonesia. The existence of an efficient railway network can support the mobility of people and goods. The safety and comfort of train travel is highly dependent on the condition of the railway facilities and infrastructure. The condition of facilities and infrastructure that meet standards will make the journey smoother and reduce the risk of accidents. With human mobility, the development of public transportation using trains in Indonesia also continues to increase. Damage to train tracks can cause disruption to comfort and endanger safety caused by excessive vibration during train travel, so regular maintenance and repair of the rails is required using a system called the Intelligent Railway Vibration Monitoring System (IRV-MS). The IRV-MS system still needs to be tested because the resulting vibration readings still require validation. The design of this shaking rig simulator is expected to be a solution in terms of vibration testing. This shaking rig can move in a vertical or horizontal linear direction with a linear motor as a driver and produce oscillatory movements. The design of this shaking rig simulator tool uses Solidworks software with 500 mm x 423 mm x 380 mm of dimension and later vibration animation will be simulated in the motion study feature in the software with input parameters of 3-10 Hz with a maximum stroke of 20 mm.
Perancangan Chassis Rail Transfer Trolley dengan Kapasitas 970 kg Pramudita Januarki; Widia Setiawan; Benidiktus Tulung Prayoga; Agustinus Winarno
Jurnal Mekanik Terapan Vol 6 No 1 (2025): April 2025
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v6i1.6843

Abstract

Perubahan tata letak material secara manual dengan bantuan peralatan transpotasi rail tranfer traolley dalam industri manufaktur menciptakan pengurangan biaya produksi. Hal ini terjadi pada salah satu industri manufaktur di mana muncul kebutuhan kelancaran proses suplai komponen menuju robot welding station baru. Komponen yang harus disuplai bermassa sekitar 970 kg dengan dimensi berkisar 3440 mm × 955 mm × 180 mm. Jarak asal komponen menuju station hanya sekitar 18 m. Massa yang berat menjadi penghambat jika ditangani tenaga manusia sehingga  perlu dilakukan perancangan alat rail transfer trolley. Penelitian terdahulu sudah melakukan perhitungan elemen mesin rail transfer trolley namun belum ada yang mengkaji sasisnya secara mendalam. Peneletian ini merancang chassis rail transfer trolley dengan analisis perbandingan variasi bentuk penampang material SS400 menggunakan finite element analysis. Dengan berbagai bentuk penampang profil seperti hannel, I-section dan hollow rectangular. Analisis yang dilakukan bertujuan untuk mengetahui faktor keamanan dan penampang chassis yang paling kuat. Hasil penelitian menunjukkan ketiga variasi penampang chassis memenuhi safety factor minimum 4. Chassis berpenampang I-section memiliki nilai von mises stress terendah yaitu 24,61 MPa dengan nilai safety factor tertinggi yaitu 9,96. Data yang diperoleh dapat digunakan sebagai referensi dalam menentukan material untuk chassis rail transfer trolley.
Co-Authors Apriawan Nur Huda Benidiktus Tulung Prayoga Budi Basuki Handoko, Handoko Ignatius Aris Hendaryanto Irsad Makhbulloh Ilyasa Paresya Arva Seta Pramudita Januarki Widia Setiawan