Ghazi Tikamori, Dhea Intan Patya, S. Sukarman, Rizki Aulia Nanda, D. Mulyadi, Khoirudin Khoirudin, Amir Amir, Taufiqur Rokhman, Safril Safril
{"title":"A Comprehensive Investigation of Deep Drawing Processes for a 2-Inch Diameter Dop-pipe Cap: Numerical and Experimental Analysis","authors":"Ghazi Tikamori, Dhea Intan Patya, S. Sukarman, Rizki Aulia Nanda, D. Mulyadi, Khoirudin Khoirudin, Amir Amir, Taufiqur Rokhman, Safril Safril","doi":"10.36805/jtmmx.v4i2.6101","DOIUrl":"https://doi.org/10.36805/jtmmx.v4i2.6101","url":null,"abstract":"The persistent challenges in material forming processes arise from recurrent issues encountered during the deep drawing process, particularly involving cracks and deviations from standard thickness dimensions. This article investigates the deep drawing process using both experimental and numerical methodologies. The experimental approach employs a 40-ton capacity power press machine, while the numerical method utilizes the ABAQUS student version software. SPCC-SD (JIS G3141) is the selected material for producing a Dop-pipe 2-inch diameter pipe cap in both approaches. Noteworthy findings include the highest positive and negative correlations observed in elements E 46 and E 48, with values of 0.715 and -0.933, respectively. Minimal disparities, averaging around 4.6% for all components, were evident between the experimental and numerical methodologies. The numerical approach yielded predictive results identifying potential issues in elements E 47 and E 48. This observation did not reveal instances of tearing failure but instead showcased an increase in thickness due to a higher axial force between the dies and punched-in components. The study successfully and accurately predicted product thickness for all components, presenting a contrast with outcomes obtained through the experimental method. Furthermore, this research advances the deep drawing process, extending its applicability to broader material forming applications and ultimately enhancing overall production process efficiency.","PeriodicalId":435474,"journal":{"name":"Jurnal Teknik Mesin Mechanical Xplore","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139617002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Optimizing the Control of DC Motors in CNC Machines by Enhancing the Parameters of the Proportional-Integral-Derivative (PID) system","authors":"Reinaldi Teguh Setyawan","doi":"10.36805/jtmmx.v4i2.6141","DOIUrl":"https://doi.org/10.36805/jtmmx.v4i2.6141","url":null,"abstract":"In this article, the PID controller design for a DC motor used in a CNC machine is discussed, with a focus on rotor angular speed regulation. A DC electric motor is an electrical machine that utilizes DC current to generate mechanical torque, which is essential in CNC applications. The PID controller, or Proportional-Integral-Derivative, is often employed to regulate the speed of DC motors based on desired parameters. This approach not only addresses the technical aspects of PID controller design but also integrates action research methods to enhance understanding and practical implementation in the context of using DC motors in CNC machines. In this study, the design of a DC motor controller with a PID closed-loop block aims to reduce the rise time value in the transfer function design. By applying the PID controller to a rotor speed of 13 rad/s, experimental results show a settling time of approximately 0.68 seconds and an overshoot of 3.02%. The lowest rise time achieved is around 136.893 milliseconds. \u0000 \u0000Keywords: PID, DC Motor, CNC Machine, Matlab","PeriodicalId":435474,"journal":{"name":"Jurnal Teknik Mesin Mechanical Xplore","volume":"54 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139530916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Akhmad Junaedi, Sukarman, Khoirudin Khoirudin, Muhammad Taufik Ulhakim, Renata Lintang Azizah
{"title":"An Heat Transfer Coefficient and Pressure Characteristics in a Copper Pipe Flow System: A Preliminary study Utilizing an EG/Water Mixture","authors":"Akhmad Junaedi, Sukarman, Khoirudin Khoirudin, Muhammad Taufik Ulhakim, Renata Lintang Azizah","doi":"10.36805/jtmmx.v4i2.5920","DOIUrl":"https://doi.org/10.36805/jtmmx.v4i2.5920","url":null,"abstract":"This study investigates the performance of an ethylene glycol/water (EG/Water) fluid at a 40:60 volume ratio, a commonly used base fluid in heating and cooling systems. The evaluation focuses on analyzing heat transfer coefficients and pressure drops. The research adopts an experimental approach, utilizing a test section made of pure copper with an inner diameter of 16 mm, an outer diameter of 19 mm, and a length of 1500 mm. The volume ratio of EG/Water at 40:60 is an input parameter, along with varying fluid flow rates controlled by a valve, ranging from 2 to 18 liters per minute. Two tubular heaters with a combined capacity of 2000 W are attached to the copper pipe, regulated by a 3000 W voltage regulator. Electric current is measured with ammeters. The experimental results reveal that the heat transfer coefficient of the EG/Water fluid increases as the fluid flow rate rises. The highest heat transfer coefficient is achieved at 18 L/min, while the lowest is observed at 4 L/min. Pressure drop increases with higher flow rates, but this does not significantly affect the friction factor, as it undergoes a noticeable decrease while the Reynolds number increases.","PeriodicalId":435474,"journal":{"name":"Jurnal Teknik Mesin Mechanical Xplore","volume":"4 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139535510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Khoirudin, S. Sukarman, D. Mulyadi, Nazar Fazrin, Moh Miftahudin, Ade Suhara, Purnama Lailisya Putri
{"title":"Analysis of Transformer Oil Post-Flashover: DGA Testing and Diagnostic Approached","authors":"Khoirudin, S. Sukarman, D. Mulyadi, Nazar Fazrin, Moh Miftahudin, Ade Suhara, Purnama Lailisya Putri","doi":"10.36805/jtmmx.v4i2.6093","DOIUrl":"https://doi.org/10.36805/jtmmx.v4i2.6093","url":null,"abstract":"Transformer oil (TO) serves as a cooling fluid and insulation medium in transformers. One cause of the decline in the quality of TO is flashover, leading to overheating of the oil inside the transformer. Flashovers, which are sudden electrical discharges in transformers, can lead to the generation of gases within the insulating oil. Understanding the changes in gas content is crucial for assessing the health and condition of the transformer. Gas analysis was conducted using the Total Dissolved Combustible Gas (TDCG), Doernenburg and Roger’s ratio method, focusing on gases extracted from both transformer oil and the gas space. The results provide valuable insights into the effects of flashovers on gas production and aid in the diagnosis of potential issues within the transformer. The TDCG values for all cycles are higher than those for the original oil. This is due to the flashover simulation using BDV testing, causing a change in the gas values contained in the TO. Based on the TDCG results the transformer is in condition I. If this occurs during actual transformer operation, the transformer can continue normal operation with certain considerations, namely, exercising caution, analyzing for individual gases, and determining load dependence. Both analyses using the Doernenburg and Roger's ratio method indicate \"No Fault.\" Therefore, if flashover simulation is conducted using the BDV test, it will cause a change in gas content in the oil but will not lead to anything fatal.","PeriodicalId":435474,"journal":{"name":"Jurnal Teknik Mesin Mechanical Xplore","volume":"77 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139535467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Mulyadi, Amir Amir, Ade Cepi Budiansyah, S. Sukarman, Khoirudin Khoirudin, Ludvi Arif Wibowo, Shanti Kumbarasari
{"title":"The Box-Behnken Response Surface Methodology Approach to Optimize Tensile Strength Load in Resistance Spot Welding Using SPCC-SD Steel","authors":"D. Mulyadi, Amir Amir, Ade Cepi Budiansyah, S. Sukarman, Khoirudin Khoirudin, Ludvi Arif Wibowo, Shanti Kumbarasari","doi":"10.36805/jtmmx.v4i2.6090","DOIUrl":"https://doi.org/10.36805/jtmmx.v4i2.6090","url":null,"abstract":"This article describes an experimental investigation into optimizing spot welding resistance (RSW) using a spot-welding machine equipped with a dual-electrode Pressure Force System (PFS). The optimization procedure entails the incorporation of SPCC-SD (JIS G 3141), a low-carbon steel that finds extensive application in the automotive sector. With the widespread use of SPCC-SD steel, RSW is an essential process in the automotive industry for assembling body components. This study employs the Box-Behnken Response Surface Methodology (Box-Behnken-RSM) to optimize the tensile strength load (TS-load), a critical parameter in RSW, through a meticulous analysis of the interplay between Holding Time, Squeezing Time, Welding Current, and Welding Time. Through the methodical design of experiments, the collection of Tensile Strength Load data, and the application of statistical modeling via RSM, this study employs SPCC-SD steel to determine the optimal values for these variables in RSW. The results above readily offer a valuable understanding of the most significant determinants and their interrelationships, thus facilitating advancements in welding methodologies and quality control in the automotive manufacturing sector. This study employs the Box-Behnken Response Surface Methodology to investigate the impacts and interrelationships of different parameters thoroughly. It aims to enhance the TS-load using SPCC-SD steel during the resistance spot welding procedure. This research contributes to advancing welding methodologies employed in the automotive manufacturing sector.","PeriodicalId":435474,"journal":{"name":"Jurnal Teknik Mesin Mechanical Xplore","volume":"77 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139535519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thyana Thiyana, Ahmad Junaedi, Mumammad Arif Rahman, S. Sukarman, Khoirudin Khoirudin, Renata Lintang Azizah
{"title":"The Heat Transfer Coefficient in a Copper Pipe Flow System Using a 40/60 Volume Ratio Ethylene Glycol/Water (EG/H2O) Blended Fluid","authors":"Thyana Thiyana, Ahmad Junaedi, Mumammad Arif Rahman, S. Sukarman, Khoirudin Khoirudin, Renata Lintang Azizah","doi":"10.36805/jtmmx.v4i1.5570","DOIUrl":"https://doi.org/10.36805/jtmmx.v4i1.5570","url":null,"abstract":"This study discusses the performance of Ethaline Glycol/water (EG/H2O) fluids at a volume ratio of 40/60. EG/H2O fluids are widely used as basic fluids in cooling and heating system applications. The discussion of EG/H2O fluid performance is focused on the analysis of the heat transfer coefficient and pressure drop. The study used an experimental method using a suction test made of pure copper with an inner diameter, outer diameter and length of 16 mm, 19 mm and 1500 mm respectively. The EG/H2O volume ratio at 40/60 was selected as the input parameter. Other input parameters are variations in the fluid flow rate which are regulated using a control valve at fluid flow rates of 4, 6, 8, 10.12, 14.16 and 18 liters/minute. A 2-unit tubular heater with a total capacity of 2000 W was installed on the sides of the copper pipes. A voltage regulator with a capacity of 3000 W is used to regulate the electric power by regulating the supplied voltage. Ampere pliers are used to measure amperage at the setting used. The experimental results show that the performance of the EG/H2O fluid on the heat transfer coefficient increases as the fluid flow rate increases. The highest heat transfer coefficient rate was obtained at a fluid flow rate of 18 L/minute, while the lowest value was obtained at a fluid flow rate of 4 L/minute. Pressure drops fluctuations occur as the fluid flow rate increases. Even though there is a fluctuating pressure drop, this condition does not significantly affect the friction factor, because the fluid flow characteristics occur in a turbulent manner","PeriodicalId":435474,"journal":{"name":"Jurnal Teknik Mesin Mechanical Xplore","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117174070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The High Accurate Automatic School Bell Controller Based On Arduino Uno DS1307 I2C Real-time Clock","authors":"R. Dinda, Sadrina Sadrina, Mursyidin Mursyidin","doi":"10.36805/jtmmx.v4i1.3499","DOIUrl":"https://doi.org/10.36805/jtmmx.v4i1.3499","url":null,"abstract":"Education plays a crucial role in developing human resources with the necessary character and competence to meet the demands of the future Industrial 4.0 revolution. To ensure the effectiveness of the teaching and learning process, schools require supporting facilities and infrastructure. One such component is the school bell, which helps teachers notify students of daily schedules. As technology advances, some schools have adopted an automatic school bell as an alternative to traditional bells. These automatic school bells use Arduino microcontroller technology to ring at scheduled times, automatically improving accuracy and convenience. By utilizing sound output via an Arduino-based system, every created information can be easily delivered and reached. This study follows the System Development Life Cycle (SDLC) method, a widely used system development methodology encompassing hardware and software systems. The research successfully demonstrates an automatic school bell system capable of automatically producing notification sounds, optimizing electricity consumption, and generating precise sound frequencies during teaching and learning activities. The output voltage and current results at various parts of the automatic school bell system range from 4.17 to 5.90 volts and 488 to 602 mA, respectively. At the same time, power consumption achieved about 2.07 to 3.38 Watts. An automatic school bell system simplifies ringing the school bell as it seamlessly integrates with the scheduled timetable (software). As a result, the automatic school bell now rings automatically according to the pre-defined schedule, enhancing efficiency and ensuring timely transitions between classes and breaks.","PeriodicalId":435474,"journal":{"name":"Jurnal Teknik Mesin Mechanical Xplore","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126523249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rika Veronika, Bohari Bohari, Ananda Yhuto Wibisono Putra
{"title":"An Effect of Electrical Current Strength and DCEN Polarity on SMAW Welding Results in Butt Joint Position 1G","authors":"Rika Veronika, Bohari Bohari, Ananda Yhuto Wibisono Putra","doi":"10.36805/jtmmx.v4i1.5567","DOIUrl":"https://doi.org/10.36805/jtmmx.v4i1.5567","url":null,"abstract":"This study aims to understand the effect of current strength variations on the Direct Current Negative Electrode (DCEN) polarity on the results of welding at butt joint joints. In this study, ASTM A36 steel was chosen as the main material, while the E6013 electrode was used as the welding electrode. The method used is an experimental approach with a qualitative approach, which allows researchers to gain a deeper understanding of the effect of current variables on welding results. The results of three experiments conducted at welding current of 60 A, 90 A, and 120 A provide a clear picture of the effect of these variables on the butt joint. In the first specimen with a current strength of 60 A, there was not enough penetration and many defects in the capping. Low current strength does not produce optimal welding results at the joint. However, in the second specimen with a current strength of 90 A, there was an initiation of penetration, although it was still incomplete. There are also fewer defects in the capping compared to the first specimen, and it shows an increase in welding results with an increase in current strength. In the third specimen with a current strength of 120 A, there is better penetration, but still not achieving complete penetration. In addition, the capping has many defects, including the suck back. It shows that using high current strength only sometimes produces optimal welding results and can present challenges, such as joint defects.","PeriodicalId":435474,"journal":{"name":"Jurnal Teknik Mesin Mechanical Xplore","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126804558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Muhamad Taufik Ulhakim, Lestari Karina Chintya, Ade Suhara, Agung Bertolomeus Haryanto, Auliya Rahmatul Ummah, A. Nur
{"title":"Ethanol additive addition to gasoline: viscosity investigation using stokes law linear regression","authors":"Muhamad Taufik Ulhakim, Lestari Karina Chintya, Ade Suhara, Agung Bertolomeus Haryanto, Auliya Rahmatul Ummah, A. Nur","doi":"10.36805/jtmmx.v4i1.5612","DOIUrl":"https://doi.org/10.36805/jtmmx.v4i1.5612","url":null,"abstract":"Nowadays, global warming is a tremendous phenomena in the world. Every country trying to solve these conditions, including Indonesia that has a campaign to reduce the emission of CO and HC from vehicles. However, the number of vehicles is increasing every year. Based on that condition, the researchers are trying to modify the fuel with the additive. This work modified the gasoline with 10% ethanol additive addition and investigated the viscosity properties using Stokes law linear regression method and compared to pure gasoline. The viscosity properties are chosen by their effect on emission of vehicles. A low viscosity of fuel can reduce CO and HC in gas emission. Then, this work was finding that the viscosity of gasoline is decreased, but 10% of ethanol does not significantly change the characteristics of gasoline. Even so, the linear regression has successfully used as an analyzed method to determined the viscosity. Then, this finding also contributes to development of fuel in Indonesia to reduce the emission of CO and HC with the modified of gasoline using ethanol in the other concentration.","PeriodicalId":435474,"journal":{"name":"Jurnal Teknik Mesin Mechanical Xplore","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114834391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}