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All Journal Mechatronics, Electrical Power, and Vehicular Technology Jurnal Rekayasa Sistem Industri Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan Jurnal Ilmiah Teknik Industri International Journal of Business Studies Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Jurnal Ilmiah Teknik Mesin Poros International Journal of Application on Economics and Business Jurnal Mitra Teknik Industri Mavis: Jurnal Desain Komunikasi Visual
Utama, Didi Widya
Program Studi Teknik Mesin, Universitas Tarumanagara
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation

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Design of Rejection Subsystem for Abnormal Workpiece Condition Modular Production System at Distribution Station Ichsan, Christopher Adryan; Irawan, Agustinus Purna; Halim, Agus; Utama, Didi Widya; Panie, William Dae; Tolukun, Bright Levin
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 6 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i2.6144

Abstract

In the industrial era 4.0, the automation system technology used is growing rapidly. Automation systems in the industry are very useful, especially in reducing production time. One of the tools that can be used to simulate production in an industry is the Modular Production System (MPS). MPS itself consists of several stations to simulate the production process on a small scale. In a production system, of course, a system is needed that can detect abnormal workpiece conditions. This system will be driven by a Programmable Logic Controller (PLC). This system will be placed at the distribution station. The rejection system in MPS is needed because, in MPS there is still a manual process, namely in the process of inserting workpieces into the stack magazine. with this manual process, it is likely that workpieces with abnormal conditions will be processed by MPS. This condition is unlikely to be processed further to the pick and place station. Therefore, objects with abnormal conditions must be separated by this rejection system. There are 2 methods used to conduct this research, namely using the 5/3 valve and the positive stop method. Data collection from both methods is done by experiment. From the experimental results of the two methods, it can be seen that the best method used for this system is the positive stop method. This method is the most appropriate method because it can produce a very accurate swivel arm stop position. From the data obtained, using the 5/3 valve method with a pressure of 4 bar the swivel arm stop position ranges from 22.4 cm to reach more than 25.8 cm, and at a pressure of 5 bar the swivel arm height ranges from 25.8 cm to more. By using the positive stop method the swivel arm stops exactly at the specified swivel arm height because the swivel arm is held by the pneumatic cylinder.
Experimental and Numerical Testing of Jaw Gripper Design Using The Mass Reduction Method of Onyx-Carbon Fiber Material at PT. Matahari Megah Santoso, Yudha; Halim, Agus; Utama, Didi Widya; Raynaldo, Kevin
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 6 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i2.6147

Abstract

A robot arm is a robot component in the motion subsystem of a robot system to determine the position and orient the object so that the robot can perform certain tasks, such as picking and placing an object. To use it as a pick and place, a gripper shaped like a human finger, commonly called a jaw gripper, is required, which is used to hold, tighten, hold, and release an object. The shape of the jaw gripper is designed and made according to the shape of the workpiece to be grasped, which was created by PT Matahari Megah using the 3D-printing method for its customer. The jaw gripper that has been designed still needs to be developed to produce a more optimal jaw gripper design, such as by reducing the use of excessive filament without reducing quality and minimizing costs incurred. Therefore, a more optimized jaw gripper test tool was made with a material reduction method using the generative design process in Inventor software, and physical testing was carried out on the ability to grip and deflection, compared to the testing process using a test system that had been designed with a dial gauge measuring instrument. The results of the comparison between the Inventor software results and the simulation results do not exceed 10%, with the difference at a pressure of 2 bars of 7% and the difference at a pressure of 4.6/5 bars of 1.87%.
Flow Investigation Inside the Vacuum Gripper for Labeling Application with Dimensions of 100 mm × 100 mm Using the CFD Method Setiawan, Eric Budiono; Halim, Agus; Darmawan, Steven; Utama, Didi Widya; Raynaldo, Kevin
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 6 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i2.6160

Abstract

Nowadays, the application of automation in the manufacturing sector is important to increase production efficiency. One of the variations in industrial automation is the vacuum gripper. Vacuum grippers are specifically designed to handle specific workpieces, such as labeling application. Label characteristics that easily bend and stick to the workpiece when peeled off require a specific gripper. This research was carried out using 2 methods, experimental method and CFD simulation method. The experimental method was carried out by collecting pressure data with Arduino. Data from this experiment will be used for the CFD simulation. Based on these experimental tests, the average vacuum pressure obtained was -44.372 kPa. From the simulation vacuum pressure on the 12 inlet holes was obtained. The largest vacuum pressure was at inlet 12 with a vacuum pressure value of -44372.11 Pa, while the smallest was at inlet hole 1 with a value of -44371.86 Pa. The pressure distribution is evenly distributed at all the suction point and has suited the design requirements.
Design and Optimizing Top Cover Feeding Unit Modular Production System and Pick & Place Station Napoleon, Emanoelle; Halim, Agus; Utama, Didi Widya; Irawan, Agustinus Purna; Waworuntu, Jason
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 6 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i2.6176

Abstract

Modular Production System is a station unit consisting of industrial components in the form of pneumatic and electrical components controlled by a Programmable Logic Controller which is directed for industry-oriented vocational training. In a Modular Production System, there are several types of stations, one of which is the pick and place station which consists of two modules, namely the pick and place module and the conveyor module. This design discusses the optimization of the design of the top cover feeding unit at the pick and place station because the top cover is dislocated every time there is a change in position when the vacuum sucks the top cover. This design optimization is done by redesigning the feeding unit slider. By doing this optimization, it can make the feeding unit accommodate the top cover where it should be and improve the process capability of the system. The results of this optimization are determined based on the process capability values, before optimization the resulting values were 1.0417 for Capabiity Process and 0.77 for the index. Then after design optimization, the values are 3.402 for Capabilty Process and 6.396 for the index and produce a total force of 0.205 N by using a slider feeding unit tilt angle of 14o. This tilt angle was determined as the most optimal angle because it resulted in the least system failure.
PENENTUAN WAKTU BAKU ELEMEN KERJA PADA PROSES PERAWATAN CONTINUOUS VARIABLE TRANSMISSION DENGAN METODE TIME AND MOTION STUDY DI BENGKEL MOTOR Imanuel, Victor; Sukania, I Wayan; Utama, Didi Widya
Jurnal Mitra Teknik Industri Vol. 4 No. 1 (2025): Jurnal Mitra Teknik Industri
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmti.v4i1.34604

Abstract

As the number of motor vehicles in Indonesia increases, the demand for vehicle maintenance and repair services also rises. One of the businesses that provide motor vehicle maintenance services is a motorcycle workshop. XYZ Workshop is an MSME (Micro, Small, and Medium Enterprise) engaged in the repair services of motor vehicles and the sale of spare parts, established in 2022. Since its operation, XYZ Workshop has provided various types of motor vehicle maintenance and repair services, starting from inspections, oil changes, wheel tire replacements, and handling CVT (Continuous Variable Transmission) on automatic motorcycles. This research is conducted with the aim of obtaining the standard time for the maintenance activities of Continuous Variable Transmission and understanding the time weight of each work element, from the largest to the smallest. This research uses the time and motion study method to analyze the work elements performed by workers and measure the work time for each element. Based on the calculated standard time for the work elements, the element with the highest standard time is the reassembly movement of the Secondary Sheave with a standard time of 41.901 seconds, while the element with the smallest standard time is the movement of picking up the cover bolts with a standard time of 1.178 seconds. The addition of tools or the design of a working system can be implemented to reduce the standard time of the work element with the highest time, making it faster and reducing the worker’s load.
PERANCANGAN FLYWHEEL HOLDER YANG ERGONOMIS UNTUK MEMPERCEPAT PROSES KERJA Farrel, Ricky; Sukania, I Wayan; Utama, Didi Widya
Jurnal Mitra Teknik Industri Vol. 4 No. 2 (2025): Jurnal Mitra Teknik Industri
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmti.v4i2.34961

Abstract

The high number of motorcycles in Indonesia increases the need for regular servicing, especially for the CVT system. However, the CVT servicing process in motorcycle repair shops still faces obstacles such as limited tools, the risk of injury due to component fitting, and low mechanical work efficiency. This study aims to design an ergonomic Flywheel Holder to improve comfort, safety, and work speed when removing CVT components. The design method uses the VDI 2221 approach for systematic design, TRIZ for design problem solving and ergonomic principles to adapt the tool to the mechanic's working conditions. Data were obtained through observation, interviews, Likert scale questionnaires, and time studies, and validity and reliability tests were conducted on data collection instruments. The results showed that the average temperature of the pulley during the service process reached 56.1℃, making it unsafe to touch directly by hand. The designed tool was proven to be able to hold the pulley stably, speed up the service process, and improve work safety. This design is the right solution to support the efficiency and ergonomics of motorcycle repair shops.
EVALUASI ERGONOMI DAN ESTETIKA GAGANG WAJAN: STUDI EKSPERIMEN PADA BERBAGAI WAJAN Abadi, Starletto; Sukania, I Wayan; Utama, Didi Widya
Jurnal Mitra Teknik Industri Vol. 4 No. 2 (2025): Jurnal Mitra Teknik Industri
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmti.v4i2.34967

Abstract

The pan handle is a crucial component that influences the comfort, safety, and user perception of cookware. However, existing market designs often compromise on one of two fundamental aspects: ergonomics or aesthetics. This study aims to (1) evaluate the ergonomic and aesthetic aspects of ten different commercial pan handle designs, (2) analyze the correlation between these two aspects, and (3) apply the findings to design and validate a new, superior concept. An experimental method with a within-subject design involved 30 participants who performed a series of simulated use tasks and provided subjective ratings using a Likert scale. Data were analyzed using the Friedman test with a post-hoc Wilcoxon Signed-Rank test, and Spearman's rank correlation. The results showed highly statistically significant differences in the ergonomic (χ²(9) = 257.300, p < .001) and aesthetic (χ²(9) = 238.920, p < .001) ratings. Furthermore, a very strong and highly significant positive correlation was found between perceived ergonomics and aesthetics (ρ = .900, p < .001). These findings were then successfully applied to develop a physical prototype, which was validated with an ergonomic comfort score of 4.07 and an aesthetic score of 4.33. This research provides important implications for the holistic design of pan handles, emphasizing that the integration of functional and visual considerations is crucial for enhancing the overall user experience.
INTERNATIONAL BRAND IMAGE DEVELOPMENT FOR MSMES: CASE OF LEGIT CRACKERS Tunjungsari, Hetty Karunia; Ie, Mei; Utama, Didi Widya; Mawardi, Viny Christanti; Solikhah, Nafia; Yukianti, Chiara Rizka; Buana, Salsabila Ayunda Martsa
International Journal of Application on Economics and Business Vol. 1 No. 4 (2023): November 2023
Publisher : Graduate Program of Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/ijaeb.v1i4.2754-2761

Abstract

The growth of MSMEs drives Indonesia's economic growth in significant contribution. Businesses that are quite popular with MSMEs are businesses in the culinary sector. Legit Crackers is an MSME that produces snacks in the form of high quality and low-calorie mackerel fish crackers. Fish crackers are a popular snack among Indonesian people, with various types and various flavors. However, like many other MSME’s businesses, the fish cracker business also faces a number of problems that need to be overcome. One solution is to develop product formulas and brand images. This is important because good product quality can influence the awareness, trust and confidence of potential buyers. For Legit Crackers, a low-calorie snack business that was founded in 2017, building a brand image is a challenge. To increase marketing potential, good quality and unique product development, packaging and promotions are carried out. Development of a comprehensive strategic plan to overcome production efficiency problems, improve business image, and open access to international markets. This research aimed to innovate and develop market potential for low-calorie snack products. It is hoped that this will improve consumer brand image towards Legit Crackers, develop the low-calorie snack market potential and penetrate the global market.
Re-Imagining Badang: Additive Manufacturing-Based Character Design for Preserving Malay Culture among Gen Z Edy Chandra; Didi Widya Utama; Luvena Valencia Ciputra
MAVIS : Jurnal Desain Komunikasi Visual Vol 7 No 02 (2025): Mavis : Jurnal Desain Komunikasi Visual
Publisher : LPPM STIKI Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32664/mavis.v7i02.2059

Abstract

Legenda Badang dari Kepulauan Riau memuat nilai keberanian, kesederhanaan, dan koneksi manusia‑laut yang semakin tergerus arus konten global. Studi konsumsi media terbaru menyatakan 71–88 % Gen Z Indonesia menghabiskan >5 jam setiap hari pada platform visual‑pertama seperti TikTok dan Instagram, sehingga dibutuhkan strategi pelestarian budaya yang relevan dengan ekologi digital tersebut. Penelitian ini merancang karakter Badang sebagai duta visual budaya lokal dengan menggabungkan kerangka penciptaan karakter Bryan Tillman, teori visual distinction Scott McCloud, dan harmoni warna Johannes Itten. Metode penelitian menerapkan pendekatan R&D (research and development) yang mencakup (1) studi literatur dan eksplorasi visual, (2) iterasi desain karakter berbasis focus‑group, (3) prototyping figur 3D via additive manufacturing, dan (4) uji preferensi Gen Z (n = 45) terhadap aspek estetika dan representasi budaya. Hasil menunjukkan varian kostum hijau‑merah‑emas dengan ornamen flora‐laut memperoleh skor daya tarik 4,6/5 dan skor relevansi budaya 4,7/5, jauh melebihi opsi monokrom (p < 0,01). Konfigurasi pencetakan PLA 0,1 mm | infill 50 % menghasilkan detail optimal dengan biaya ±Rp 42 000 per unit. Temuan ini menegaskan bahwa desain karakter—didukung teknologi 3D printing—dapat menjadi strategi efektif pelestarian budaya lokal di era digital serta membuka peluang komersialisasi IP melalui figur kolektibel, motion‑comic, dan metaverse.
Novel design of a simple control system for hybrid electric motorcycle Utama, Didi Widya; Utama, Hadian Satria; Wardy, Reno
Journal of Mechatronics, Electrical Power, and Vehicular Technology Vol 16, No 2 (2025)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/j.mev.2025.1077

Abstract

A hybrid system combines two or more propulsion systems, typically including electric motors and internal combustion engines. In this research, the motorcycle uses a 5.67 kW/8000 rpm gasoline internal combustion engine and a 1 kW/48 V DC brushless electric motor, both coupled to an in-wheel electric motor. The control system was designed to automatically manage two propulsion systems based on the rotation speeds of an internal combustion engine and an electric motor, along with readings from current and voltage sensors. It uses two ATmega16-based microcontrollers, a master and a slave, and is monitored via Bluetooth using an Android smartphone. An experimental setup was conducted to effectively operate the system, utilizing the motorcycle in three modes: engine mode, electric motor mode, and hybrid mode, which demonstrated successful functionality through automatic propulsion displacement.
Co-Authors Abadi, Starletto Agus Halim Agus Halim, Agus Agustinus Purna Irawan Ahmad Ahmad Ahmad Ahmad Asrul Aziz Buana, Salsabila Ayunda Martsa Budhi Lamtoro Chairy Chairy CHANDRA, EDY Clementinus Benny Agung Pambayu Cristian Awi Danardono Agus Sumarsono Farrel, Ricky Frangky Selamat Frans Jusuf Daywin Gatot Soeharsono Hadian Satria Utama Hary Respati Agus Sugiharto Hetty Karunia Tunjungsari I Wayan Sukania Ichsan, Christopher Adryan Imanuel, Victor Jan Antonius Jeffrey Jeffrey Kennard Dharmmabakti Kevin Christian Kevin Wiliam lamto widodo Leonardo Yohanes Pujianto Lithrone Laricha S. Luvena Valencia Ciputra Mei Ie Michael Wijaya Michael Wijaya Wijaya Moergen Tandinata Napoleon, Emanoelle Noor Eddy Panie, William Dae Raynaldo, Kevin Richard Kurniawan Roby Roby Rudy Rudy S., Lithrone Laricha Santoso, Yudha Setiawan, Eric Budiono Solikhah, Nafia Steven Darmawan, Steven Tolukun, Bright Levin Viny Christanti M Wardy, Reno Waworuntu, Jason Widjaya, Renaldi Putra Wilson Kosasih Yukianti, Chiara Rizka