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Prosiding SNTTM
Published by BKS-TM Indonesia
ISSN : 30321972     EISSN : 26230313     DOI : -
Core Subject : Agriculture, Engineering,
Aerospace Engineering Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering
Prosiding SNTTM merupakan wadah bagi para peneliti dan praktisi tknik mesin untuk berbagi hasil riset, inovasi, serta perkembangan terbaru dalam bidang teknik mesin dan rekayasa. Prosiding menerima berbagai lingkup makalah terbaik dalam berbagai topik bidang teknik mesin, termasuk namun tidak terbatas pada: - Desain dan Manufaktur - Energi dan Konversi Energi - Material Teknik dan Metalurgi - Mekatronika dan Otomasi - Dinamika, Getaran, dan Kontrol - Transportasi dan Teknologi Otomotif - Termofluida dan Rekayasa Panas - Aplikasi Kecerdasan Buatan dalam Teknik Mesin
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 14 Documents
 1   2 
Perancangan alat uji roda gigi menggunakan metode VDI 2221 Cupu, Dedi Rosa Putra; Afrizala, Efi; Kalduma, Ibnu
Prosiding SNTTM Vol 21 No 1 (2023): SNTTM XXI Oktober 2023
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/r1xmks46

Abstract

The transmission system is vital in automotive and industrial applications, including gears. Gears are the most widely transmission components used to transmit the power and rotational speed from the driver component to others. Power is transmitted by contact rolling between two contacting gear surfaces. The contacting area is relatively tiny enough to transmit very high power, resulting in high pressure on the contact surface of the gears. This causes failure on the gear surface, such as pitting and scuffing. To investigate the failures and their causes, a gear test rig is utilized, and this work aims to design a gear test rig using the VDI 2221 method. VDI 2221 is used due to its efficient and systematic design method from the product concept variants. Calculation and design of the components referred to Kiyokatsu Suga and Sularso. Static structural analysis was conducted to determine the strength and safety of the designed gear test. This study's result is a gear test rig design with a maximum von Mises stress of 19.47 MPa at the main frame. Then, a dynamic simulation was carried out, and this designed gear test rig produced a friction coefficient of 0.342.
Model perhitungan kompleksitas proses sangrai kopi menggunakan biji kopi tradisional Indonesia Budiono, Hendri Dwi Saptioratri; Zuhuda, Rahman Muhamad; Fausta , Mohammad Anindya; Suputra , Oka Widiantara; Aditya , Trimitra Mahesa
Prosiding SNTTM Vol 21 No 1 (2023): SNTTM XXI Oktober 2023
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/tzpdsy71

Abstract

The manufacturing process involves converting raw materials into usable products, also applicable in other sectors like coffee roasting. Coffee roasting can be considered a manufacturing process as it involves transforming green coffee beans into roasted coffee beans. Coffee roasting defines 20% - 25% of coffee quality, making a variation in process is impactful. Due to various influential parameters, achieving specific bean specifications adds complexity to the process. Indonesia, a major coffee producer, emphasizes research for enhancing coffee quality, specifically for varieties like Arabica Gayo, Arabica Solok Radjo, Robusta Bengkulu, and Robusta Temanggung. Another underlying factor for this research is the lack of studies related to the complex process of coffee roasting. This research uses the model to calculate the complexity of the manufacturing system in the coffee roasting process. This model is used as a tool to assess the existing process. Furthermore, this model simplifies the calculation of the process complexity, and the resulting index can be used to estimate initial costs during the design phase for the roasting process. This research adopts the method by W.H. El Maraghy regarding complexity modeling and applies it to the scope of coffee roasting. Based on the conducted research, the most important aspects that influence the complexity of roasting coffee beans based on the roast level are roast color, mass, and dimensions resulting from the roast profile of coffee beans. Temanggung Robusta coffee beans were found to have the highest complexity index, with an RPM of 90 and a dark roast level of 9.21.
Optimizing crash box design for enhanced vehicle safety: A Gaussian process regression approach Jarwadi, Maulana Hayu; Jusuf, Annisa; Palar, Pramudita Satria; Gunawan, Leonardo
Prosiding SNTTM Vol 21 No 1 (2023): SNTTM XXI Oktober 2023
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/pqbt8a56

Abstract

Transportation is a fundamental human need that permits mobility, allowing for economic, social, and cultural advancements. The crash box structure, a vital component for crashworthiness, is designed to deform during car collisions to absorb considerable impact energy plastically. This design concept attempts to prevent potential injuries to drivers and passengers. Crash boxes are constantly being developed to optimize their configuration to match needed crashworthiness features. The mean crushing force (Pm), crushing force efficiency (CFE), and specific energy absorption (SEA) are the critical crashworthiness variables that are calculated. With the advancement of data modeling tools, better crash box design can be achieved by revealing recognizable patterns and trends inherent in the data. To that end, this research uses LS-DYNA software to perform a numerical simulation of a hexagonally designed crash box that impacted under axial loading. The simulation includes the variation of thickness and perimeter of the crash box. Following the simulation, the data is modeled using the Gaussian Process Regression (GPR), often known as Kriging. This modeling approach yields surface and contour plots that show the impacts of thickness and perimeter on crashworthiness performance. The results show that the Pm value increases as the structure's thickness and perimeter increase. In comparison, the SEA and CFE values increase when the structure's thickness increases while the perimeter decreases. In summary, the simulation results show that the crash box with a thickness of 3 mm and a perimeter of 400 mm has the highest Pm value. In contrast, the crash box with a thickness of 3 mm and a perimeter of 120 mm achieves the highest CFE and SEA values.
Analisis statis model fuselage berlubang dengan penguat grid material metal menggunakan metode elemen hingga Hasana, Muhamad Irfan; Sudirab, I Gusti Ngurah; Herlina
Prosiding SNTTM Vol 21 No 1 (2023): SNTTM XXI Oktober 2023
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/2h2m9h25

Abstract

In addition to the material on the aircraft, structural configuration is also important. One of the structural configurations that can distribute loads and moments evenly is the grid structure. In an aeroplane, there are holes in the structure, which is unavoidable because it has an important, one of which is a window hole. This study analyzes the fuselage model with a grid structure of variations in the thickness of the frame on the window against deformation, stress, and margin of safety under static loading. The analysis was performed by applying a bending load and a torsion load of 10,000 N, and the boundary conditions were assumed to be a cantilever beam. Static calculation analysis using the finite element method (FEM) with MSC. Patran/Nastran software. The research results found that the existence of holes causes the maximum deformation and maximum stress values to increase, but the mass in the structure decreases. In addition, the increase in the window frame's thickness affects the maximum deformation and maximum stress values, which decrease, but the structure's mass increases. In addition, based on the decreasing maximum stress value, the MOS value increases. The margin of safety value in all structural models is said to be safe because the margin of safety value is greater than 0 (MOS > 0). The results of this study show that the grid structure is stiffer and stronger than conventional structures because it has lower deformation va- lues and maximum stress.
Perancangan system Kendall rotary-crane scale laboratorian mengunakan model state space Purtojo; Mahdi, Nur Amiral; Suryawan , Donny; Adi, Agung Nugroho
Prosiding SNTTM Vol 21 No 1 (2023): SNTTM XXI Oktober 2023
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/6tp28a23

Abstract

A crane transports heavy goods using a tall structure to move from one point to another within a certain distance. The rotary crane can be modeled as a simple rotary pendulum on an experimental scale. As a controlled object, the model is used to simulate the control performances that are appropriate for crane use. The angular position of the pendulum arm and link are the main objects to be controlled. A smaller pendulum link swing and fast pendulum arm reach the final position without or with a small overshoot, which is desired. The space space model of the rotary pendulum is derived since it represents the multi-input-multi-output system. The state feedback control was then developed to design the control system. The integral time absolute error performance index was set as the desired performance within the operation range. The controller gain K was obtained based on the system's performance index and characteristic equation. The simulation was then conducted in a computer model using the Xcos model provided by Scilab software to iterate the best value of controller gain K. The simulation result was implemented as a controlled object in the rotary pendulum. The rotary pendulum is driven by a DC motor with a rotary encoder attached to it to track its position. The angular swing pendulum is tracked using a rotary encoder as well. Hardware in the loop configuration was built to experiment.
Perancangan dan analisis struktur rangka mesin high speed spinner pemisah cairan lateks kapasitas 1 liter/ Jam Syafri; Wardana , Ade Alwi; Cupu , Dedi Rosa Putra; Nazaruddin
Prosiding SNTTM Vol 21 No 1 (2023): SNTTM XXI Oktober 2023
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/ymzmgn51

Abstract

Pada penelitian ini, dilakukan perancangan dan analisis rangka mesin spinner dengan kapasitas 1liter/jam dan putaran mencapai 10,000 rpm. Untuk memproduksi mesin spinner lateks berkecepatan tinggi (high-speed spinner), diperlukan sistem rangka yang kuat untuk menahan beban kerja serta dapat mencegah terjadinya kecelakaan kerja pada mesin tersebut. Mesin spinner dirancang dengan dimensi 955mm × 560mm × 700mm dan kapasitas 1 liter/jam. Dengan spesifikasi ini, beban yang akan ditahan oleh rangka adalah sebesar 196 N. Analisis rangka dilakukan dengan membagi beban 196 N menjadi 5 bagian sesuai posisi rangka masing-masing. Rangka yang mengalami beban terbesar adalah rangka nomor 2, dengan beban sekitar 115.64 N. Akibat beban tersebut maka diperoleh tegangan maksimum pada rangka 2 senilai 12.96 Mpa. Dengan mempertimbangkan faktor keamanan sebesar 5, ketersediaan material, dan kemudahan proses produksi, maka material ST37 diidentifikasi sebagai material yang cocok untuk rangka mesin spinner. Analisis selanjutnya dilakukan untuk menentukan defleksi yang terjadi pada rangka. Melalui perhitungan manual, defleksi maksimum ditemukan sebesar 0.041 mm pada rangka 2. Analisis rangka kemudian dilanjutkan dengan simulasi menggunakan Autodesk Inventor. Dari hasil simulasi, tegangan maksimum terjadi pada rangka nomor 2 dengan nilai 14.66 MPa, dan defleksi sebesar 0.064 mm dengan faktor keamanan sebesar 7.54. Dengan mempertimbangkan hasil perhitungan manual, analisis tegangan menggunakan Autodesk Inventor, dan validasi dengan mesin prototipe yang telah dibuat, rangka mesin spinner berkecepatan tinggi dianggap aman untuk digunakan sebagai penopang mesin dengan kapasitas 1 liter per jam dan kecepatan rotasi 10,000 rpm.
Pengaruh kecepatan weaving terhadap keseragaman dan Lebar Manik Las dengan Ketinggian Torch 2 mm Pada Pengelasan Orbital pipe welding (OPW) SS316L Prasetyo, Eko; Baskoro, Ario Sunar; Silalahi, Yabes Gomest; Fikri, Muhammad; Kiswanto, Gandjar
Prosiding SNTTM Vol 22 No 1 (2024): SNTTM XXII Oktober 2024
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/590887

Abstract

Pipe welding is widely used in industries with piping systems, including the oil, construction, and manufacturing industries. Several parameters, including the width of the weld bead, can determine the quality of good welding results. In this research, pipe welding was carried out automatically in the 5G position using GTAW (Gas Tungsten Arc Welding) without metal filler (Autogenous). Welding tests were carried out to determine the effect of weaving speed on the uniformity of weld bead width from 0° to 360° and the weld bead width of 316L Stainless Steel pipes with an inner diameter of 4 inches and a thickness of 4 mm using a zigzag (weaving) welding pattern. The welding method uses the Pulse Current Gas Arc Welding (PC-GTAW) method with a current of 137 A and a background current of 10 PPS (Pulse Per Current). Test samples were taken at 4 (four) welding points, namely 0°, 90°, 180° and 270° with a torch height of 2 mm to the test object. The test was carried out with 3 (three) variations of weaving speed, namely 0.150 mm/s, 0.155 mm/s, and 0.161 mm/s. The welding tool used is a prototype orbital pipe welding tool using the 5G method, which is then carried out by forming a test object. Weld bead width was measured using a digital microscope model Dino-Lite AM 4515ZT and DinoCapture 3.0 software. The bead width measurements show that the most consistent weld bead width uniformity occurs at a weaving speed of 0.155 mm/s. Meanwhile, the average weld bead width at a weaving speed of 0.150 is 10.26 mm; at a weaving speed of 0.155 mm/s, it is 10.44 mm; and at a weaving speed of 0.161 mm/s, the average weld bead width is 9.8 mm.
Optimalisasi pendinginan pasif dengan dual evaporator loop heat pipes: studi visualisasi dengan radiografi neutron Fathoni, Andhy M.; Hendrayanto, Priska A.; Ramadhan, Ranggi S.; Putra, Nandy
Prosiding SNTTM Vol 22 No 1 (2024): SNTTM XXII Oktober 2024
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/590646

Abstract

In this study, a dual evaporator loop heat pipe (DE-LHP) was developed to accommodate multiple heat sources from a single electronic device. Loop heat pipe (LHP) operation involves complex hydrody-namic phenomena, especially in scenarios involving numerous vapor-liquid interfaces. The complexity of LHPs depends on various elements, such as device design, orientation to gravity, selection of work-ing fluids, heat loads, and condenser cooling conditions. The accuracy of virtual representations in cap-turing the actual hydrodynamic behavior of a working LHP needs to be improved, hampering the de-velopment of precise modeling and design methodologies. This study on thermal performance alone needs to provide a comprehensive picture. Therefore, using visualization is important because research on visualization of working fluid behavior in two phases still needs to be completed. Therefore, neu-tron radiography is used in this experiment to observe the boiling and fluid dynamics in the heat pipe because it has advantages over other visualization methods. Copper material is used to develop the DE-LHP. The capillary wick used is made of stainless steel screen mesh. Deionized water with a 50% filling ratio is selected as the working fluid. To understand the flow behavior phenomenon under steady-state conditions, the heat load varies in a constant temperature range of 40-120oC. Three cartridge heaters simulate multiple heat sources and are controlled using a PID controller. The results show that the pro-posed DE-LHP can function well, accommodate multiple heat sources, and maintain stable performance over a wide range of constant temperatures. Neutron radiography images reveal essential details about the working fluid distribution during operation. The photos also show interesting findings, such as steam pulses and entrained working fluid in the vapor chamber and channels.
Biochar and Energy Production from Rice Husk and Corncob in Karawang: A Techno-Enviro Analysis Siantar, Gabriella A L; Surjosatyo, Adi
Prosiding SNTTM Vol 22 No 1 (2024): SNTTM XXII Oktober 2024
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/590795

Abstract

The world is facing increasing challenges in sustainable energy production and waste management. This study presents a techno-environmental analysis of biochar and energy production from rice husks and corncob in Karawang, Indonesia, through co-gasification. A parametric study using Aspen Plus simulation shows that biochar yield is sensitive to temperature and  equivalence ratio (ER). Specifically, corncob gasification at 450 degrees Celsius yields the highest amount of biochar. Additionally, the study finds that increases in temperature and ER lead to higher syngas and lower heating value (LHV). A life cycle assessment was conducted to evaluate three scenarios: 100% rice husk, 100% corn cob, and a 50% combination of rice husk and corncob for biochar application as carbon sequester. The findings indicate that the 50% mixing ratio has the most positive impact on global warming potential, with a carbon offset of - 170,134 kg CO2eq per 1000 kg of biochar applied to soil. The results provide valuable insights into environmental impacts of utilizing these agricultural residues for renewable energy generation and biochar production.
Persalinan nyaman: Konsep tempat tidur otomatis berbasis pemrosesan gambar comfortable childbirth: The concept of an automated bed based on image processing Budiono, Hendri D.S.; Satyajati, Bodhimula
Prosiding SNTTM Vol 22 No 1 (2024): SNTTM XXII Oktober 2024
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/590882

Abstract

In Indonesia, the rate of C-section births has increased to 16.4% in 26 years, exceeding the WHO recommendation of 15%, with 25% of these operations performed without medical emergencies. One of the causes is anxiety about labour pain and intrapartum discomfort. Bar-Lung, short for Babar Lungguh, is an  automated birthing table system that supports upright labour. Bar-Lung uses image processing to reconstruct the mother's body geometry from the hips down to obtain the parturient's geometry measurements, then adjusts three main components—Back Lift, Leg Support, and Push Bar—for optimal positioning. Research shows that an upright position can facilitate the pushing process and reduce the durationof the second stage, thereby reducing pain and increasing normal labour. Pregnant women are photographed with a calibrated camera layout and lighting and are shot from the side. The photos are processed to identify key points such as the knees, soles of the feet, and waist, which are then counted in pixels and converted to metric units. The measurement results are used to drive the Bar-Lung, which is equipped with a stable and efficient electric putter actuator. The Back Lift, Leg Support, and Push Bar components can be adjusted automatically or manually for fine tuning, while the Emergency button allows the birthing table position to be reset in case of emergency. The Bar-Lung makes childbirth easier and increases the efficiency of medical personnel, with the potential to reduce the number of Caesarean sections inIndonesia by reducing the duration of labour pain. 

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