Article Per Year (5 Year)
p-Index From 2021 - 2026
1.633
P-Index
This Author published in this journals
All Journal Journal of Engineering and Technological Sciences Syntax Literate: Jurnal Ilmiah Indonesia Mesin Jurnal Teknik Mesin Indonesia Indonesian Journal of Electrical Engineering and Computer Science International Journal of Innovation in Mechanical Engineering and Advanced Materials
Raharno, Sri
Institut Teknologi Bandung
Aerospace Engineering Humanities Automotive Engineering Control & Systems Engineering Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

Published : 11 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 11 Documents
Search

 1   2 
An Experimental Verification of a Methodology for Assessing The Energy Performance on Turning Processes Raharno, Sri; Martawirya, Yatna Yuwana; Cipta Wijaya, Jeffry Aditya
Mesin Vol 25, No 2 (2016)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (359.029 KB)

Abstract

This paper aimed to experimentally verify the methodology for assessing energy performance of turning processes that had been developed on the prior research. Specific energy consumption is used as the indicator in the process assessment. The experimental verification can be separated into two main steps. The first step is to construct the reference values of specific energy consumption and the second step is to compare the reference values to the specific energy consumption from the assessed process. The reference values were constructed based on the data of specific energy (from experiment) using data envelopment analysis (DEA) method. In this case, MaxDEA Basic 6.6 program has been used to determine the reference values. The experiment was conducted using several lathe machines based on the certain metering strategy. The metering strategy must be determined to maintain the consistency and validity of the process assessment.  After the reference values were constructed, the assessment can be carried out. Energy consumption from the assessed process was measured using power analyzer, and then it was converted into specific energy consumption value according to the material removal rate. Energy reduction score could be calculated based on the distance between the data of specific energy consumption (from the assessed process) and the reference value. The energy performance of the machine is better if the score of energy reduction is lower and nearer to the reference value. The methodology was designed to be as simple as possible in order to be appropriately implemented on the industry, but without reduce the quality of the assessment. shedding. 
Pengembangan modul pemantau penggunaan energi listrik untuk menunjang implementasi industri 4.0 Harry Prayoga Setyawan; Sri Raharno
Jurnal Teknik Mesin Indonesia Vol 16 No 2 (2021): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v16i2.238

Abstract

Industri manufaktur telah memasuki era baru, yaitu era Industri 4.0 yang mempunyai tujuan utama antara lain untuk peningkatan efisiensi, pengurangan pemborosan, dan penurunan ongkos produksi. Penerapan paradigma Industri 4.0 memerlukan persyaratan pokok, yaitu semua elemen produksi seperti peralatan produksi, operator, dan benda kerja harus mempunyai kecerdasan. Agar mempunyai kecerdasan, elemen produksi antara lain seperti mesin-mesin perkakas perlu dilengkapi dengan modul tambahan. Mesin perkakas secara umum tidak memiliki sistem pemantauan energi. Modul pemantau energi mengukur energi yang digunakan mesin dan data pengukuran disimpan dalam basis data. Data pengukuran divisualisasikan pada antarmuka web pemantauan energi. Hasil pengujian pembacaan sensor dibandingkan dengan pembacaan alat ukur pembanding didapatkan hasil ketelitian sensor tegangan 0,96% dan sensor arus 0,92%. Ketelitian pembacaan sensor mempunyai nilai keakuratan sesuai standar IEC No. 13B-23 yang klasifikasikan ke golongan III dengan nilai ketelitian 1,0%. Modul pemantau energi memiliki kebutuhan daya sebesar 6 Wh dan dilengkapi dengan baterai yang dapat dioperasikan selama 2 jam 25 menit. Modul pemantau energi memiliki indikator TKT 5 pada pengukuran Tingkat Ketersiapan Teknologi (TKT).
Pengembangan sistem pemantauan fase proses pemesinan dengan metode pseudo sensor untuk mendukung implementasi paradigma industri 4.0 Maulana Yusuf; Sri Raharno
Jurnal Teknik Mesin Indonesia Vol 16 No 2 (2021): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v16i2.237

Abstract

Industri di Indonesia sangat jamak bertipe job-shop yang mempunyai karakteristik memproduksi produk dengan varietas yang sangat banyak dengan jumlah yang sangat sedikit. Hal ini menyebabkan timbulnya beban produksi dengan pembebanan dinamis. Kondisi ini akan berimbas langsung pada menentukan durasi penggunaan komponen dalam rangka menentukan jadwal perawatan mesin. Agar mesin konvensional tetap dapat digunakan pada implementasi paradigma Industri 4.0. mesin tersebut perlu ditambahkan kecerdasan dalam hal ini kemampuan untuk memantau fase-fase proses pemesinan. Pada tiap fase operasi mesin, komponen yang terlibat umumnya selalu berubah sehingga akan sangat sulit mencatat berapa durasi pemakaian pada tiap komponen mesin itu terlebih pada mesin perkakas konvensional. Sehingga dengan diketahuinya durasi komponen bekerja akan memudahkan dalam melakukan manajemen perawatan yang tepat. Kondisi tersebut mengilhami pengaplikasian teknik pseudo sensor yaitu mengetahui fase operasi mesin berdasarkan variabel yang tidak berkaitan langsung seperti arus, tegangan, RPM, dan getaran mesin untuk diterjemahkan sebagai fase operasi pemesinan. Metode ini diawali dengan proses akuisisi data pada dua jenis material yang berbeda. Data dianalisis fluktuasi nilainya untuk dijadikan acuan nilai ambang batas dalam penggolongan antara fasa satu dengan yang lainnya.
Perancangan cetakan komponen holder sepeda motor dengan pendekatan metode elemen hingga Andreas Hartoyo Yaputra; Sri Raharno; Yatna Yuwana Martawirya
Jurnal Teknik Mesin Indonesia Vol 14 No 2 (2019): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (445.137 KB) | DOI: 10.36289/jtmi.v14i2.130

Abstract

Although mold modeling using finite element method has been developed since the late 1970s but the reality is still a lot of manufacturing companies in Indonesia are using the conventional method of trial and error in terms of making mold design. Based on industrial business perspective, the method of trial and error is very detrimental to the company because it takes a lot of time and expenses. Therefore this study has developed mold design modeling with numerical analysis approach to minimize process time dan cost losses. This research project uses a case study on motocyle 600 cc holder component with forging process. The purpose of this design is to determine the exact design of the mold so that the mold can be filled completely by material. In addition, to determine the tonnage required as well as a means of early detection of defects in this process. In the end of this research the geometry of mold and its parameter could be determined, requirement of press machine capacity determined at 42 tons. Furthermore, dies material needs to have melting point above 863° C to prevent premature failure.
Lessons Learned from Rapid Development of CPAP Ventilator Vent-I during Covid-19 Pandemic in Indonesia Syarif Hidayat; Jam'ah Halid; Tatacipta Dirgantara; Mipi Ananta Kusuma; Hari Utomo; Reza Widianto Sudjud; Ike Sri Rejeki; Sandro Mihradi; Sri Raharno; Dadang Rukanta; Hari Tjahjono
Journal of Engineering and Technological Sciences Vol. 52 No. 5 (2020)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2020.52.5.11

Abstract

Here, lessons learned during the development of the CPAP ventilator 'Vent-I', aimed to help COVID-19 patients with breathing difficulties, are presented. Within only weeks, the Vent-I was developed, complying with functionality, safety and reliability requirements and passing the clinical trial. It was then distributed to hospitals all over Indonesia. Two billion rupiahs were raised through crowdfunding within one week. When the project was officially closed, more than one thousand Vent-I devices had been distributed and more than twelve and a half billion rupiahs had been raised. Currently, commercialization and mass production of the device have been started. From this project several lessons can be learned. First and foremost, the spirit of gotong royong"“ sincere collaboration within the community to help each other "“ is still firmly rooted within the people and the society of Indonesia. Noble values, i.e. sincerity, sensitivity and concern about the needs of the community, willingness to serve voluntarily and public trust, made the team dare to try and face failure. The spirit of social entrepreneurship, willingness to listen to the user and collaboration with the relevant authority can accelerate development process. The availability of knowledge and skills that constitute an innovation ecosystem in Bandung, supported by business, social institutions and government, was also a key success factor..
An Experimental Verification of a Methodology for Assessing The Energy Performance on Turning Processes Sri Raharno; Yatna Yuwana Martawirya; Jeffry Aditya Cipta Wijaya
Mesin Vol. 25 No. 2 (2016)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This paper aimed to experimentally verify the methodology for assessing energy performance of turning processes that had been developed on the prior research. Specific energy consumption is used as the indicator in the process assessment. The experimental verification can be separated into two main steps. The first step is to construct the reference values of specific energy consumption and the second step is to compare the reference values to the specific energy consumption from the assessed process. The reference values were constructed based on the data of specific energy (from experiment) using data envelopment analysis (DEA) method. In this case, MaxDEA Basic 6.6 program has been used to determine the reference values. The experiment was conducted using several lathe machines based on the certain metering strategy. The metering strategy must be determined to maintain the consistency and validity of the process assessment.  After the reference values were constructed, the assessment can be carried out. Energy consumption from the assessed process was measured using power analyzer, and then it was converted into specific energy consumption value according to the material removal rate. Energy reduction score could be calculated based on the distance between the data of specific energy consumption (from the assessed process) and the reference value. The energy performance of the machine is better if the score of energy reduction is lower and nearer to the reference value. The methodology was designed to be as simple as possible in order to be appropriately implemented on the industry, but without reduce the quality of the assessment. shedding. 
Rancangan konsep sistem pemantauan dan pengelolaan data produksi berbasis configurable virtual workstation (CVWs) Andi Arif Isyanto; Sri Raharno
Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i2.388

Abstract

Management of production data that is excessively big and varied is difficult to do manually, so the system that can be used to easily monitor and manage the production data during the process is needed. This study proposes a framework of monitoring and managing production data based on Configurable Virtual Workstation (CVWs) in the rollingstock industry in Indonesia, with a case study of the flat wagon assembly process. The methodology used in this study is by creating a virtual model of assembly elements according to real conditions on the shopfloor. Each of these virtual elements will be connected to each other to get the update information on the shopfloor accurately and transparently to build a cyber-physical system as the first step towards Industry 4.0. Some of the information that can be obtained from the implementations of this system includes: 1) operator working hours; 2) ongoing operation; 3) product completion status; 3) material supply status; 4) product traceability. Based on this information, the actual conditions on the shopfloor can be known and monitored easily and accurately.
Analisis dampak penerapan sistem pengelolaan perkakas berbasis paradigma Industry 4.0: Studi kasus industri padat karya Laulia Ariyani Rangkuti; Sri Raharno
Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i2.389

Abstract

In general, production orders will not be completed according to the production schedule if there are obstacles in the production process, such as damaged production machines, material shortages, lack of operators and poor tool management. Solution for this problem, namely tool management, is to use the industry 4.0 paradigm through the development of a cyber physical system. Cyber physical system concept for the tool management system is carried out by giving identity to all tools. At the time the tool will be distributed, the tool must first be scanned using hardware. Through this scanning process, data is obtained in the form of the number of tools that have been distributed and available. The tool availability data is not only used to control tool distribution but also very influential in determining tool requirements plans. The next step after designing a tool management system is to analyze the impact that occurs from the application of a tool management system applied to a labor-intensive industry. The method applied in this analysis is the collection and analysis of current conditions and then compared with conditions that will occur as a consequence of implementing the system. In addition, an analysis of the need for the application of a tool management system is also carried out in terms of hardware requirements and systems for data processing.
Review On Layout Optimization For Rollingstock Maintenance Depot Kartikaningtyas, Dela Safitri; Raharno, Sri; Handoko, Yunendar Aryo
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i1.17307

Abstract

This review paper discusses the importance of having an optimal layout for rollingstock maintenance depots to optimize rollingstock maintenance in improving maintenance efficiency and reducing maintenance costs while maintaining the availability and reliability of railway vehicles. The current problems in rollingstock maintenance depots faced by railway industry are limited land availability, limited storage space, material handling issues, and the lack of standards for train maintenance depot layouts. The paper also presents classification criteria and categories on layout planning and maintenance optimization approach for rollingstock maintenance depots based on various recent studies including the methods used and the results obtained. Finally, this review paper proposes guidelines for future research on rollingstock maintenance depots in Indonesia as decision-making that considers the economic factors of layout optimization and the implications for safety and the environment of maintenance activities. This could also help improve the company's reputation as well as prepare for future expansion
Parameter identification and continuous friction modelling of a brushed DC motor Ahmad’Abdan Syakuro; Vani Virdyawan; Sri Raharno; Indrawanto Indrawanto; Tegoeh Tjahjowidodo
Indonesian Journal of Electrical Engineering and Computer Science Vol 42, No 3: June 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v42.i3.pp699-707

Abstract

Designing high-performance control systems for brushed DC motors is often hindered by the lack of comprehensive dynamic parameters in manufacturer datasheets, particularly for low-cost DC motors. In addition to the parameter identification method, this study also introduces a continuously differentiable friction model incorporating Coulomb and viscous-like behaviors using a hyperbolic tangent function. The electrical and mechanical parameters of an RS-775 motor were identified using standard laboratory tools and the MATLAB system identification toolbox. The proposed model was validated against experimental data under square wave and sinusoidal inputs, achieving a position prediction error of less than 5% and capturing complex dynamic behaviors. The results demonstrate that this accessible identification approach provides a sufficiently accurate dynamic model for educational and industrial robotics applications, offering a superior alternative to trial-and-error tuning.
Co-Authors Ahmad’Abdan Syakuro Andi Arif Isyanto Andreas Hartoyo Yaputra Cipta Wijaya, Jeffry Aditya Dadang Rukanta Febriansyah, Muhammad Zulfahmi Hari Tjahjono Hari Utomo Harry Prayoga Setyawan Harry Prayoga Setyawan Ike Sri Rejeki Indrawanto Jam'ah Halid Jeffry Aditya Cipta Wijaya Kartikaningtyas, Dela Safitri Kusuma, Mipi Ananta Laulia Ariyani Rangkuti Martawirya, Yatna Yuwana Maulana Yusuf Mihradi, Sandro Muhammad Zulfahmi Febriansyah Reza Widianto Sudjud Setyawan, Harry Prayoga Syarif Hidayat Tatacipta Dirgantara, Tatacipta Tegoeh Tjahjowidodo Vani Virdyawan Yunendar Aryo Handoko