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All Journal Elkom: Jurnal Elektronika dan Komputer FLYWHEEL : Jurnal Teknik Mesin Untirta Teknika: Jurnal Sains dan Teknologi Journal of Renewable Energy and Mechanics MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Accurate: Journal of Mechanical Engineering and Science Jurnal Vokasi Mekanika Research Journal of Social Economics Empowerment (ROSEE) Multidisciplinary Innovations and Research in Applied Engineering
Halim, Dimas Ardiansyah
Akademi Teknik Wacana Manunggal Semarang
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Perancangan Steam Turbine Pembangkit Listrik Tenaga Panas Bumi di Kamojang Unit VI Dimas Ardiansyah Halim; Anwar Nurharyanto; Unggul S Jati; Didik D Susilo; Augustinus Sujono
Jurnal Teknika Vol 15, No 1 (2019): Edisi Juni 2019
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v15i1.6080

Abstract

Perbandingan Nilai Kekerasan Baja Karbon Rendah pada Proses Pack Carburizing dengan Media Arang Sekam Padi dan Arang Tempurung Kelapa Anwar Nurharyanto; Dimas Ardiansyah Halim; Eko Surojo
Jurnal Teknika Vol 15, No 1 (2019): Edisi Juni 2019
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v15i1.6009

Abstract

Optimasi Setting Posisi Screen dan Blower terhadap Kapasitas serta Granulasi pada Proses Grinding di PT. Malindofeedmill, Tbk Grobogan Dimas Ardiansyah Halim; Mukhlis Ibrahim; Muhammad Syahrul Sidiq; Kautzar Rizki Diptaseptian
Accurate: Journal of Mechanical Engineering and Science Vol. 1 No. 2 (2020): October 2020
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v1i2.327

Abstract

The efforts to increase capacity while maintaining the granulation of the grinding process are carried out to maximize the use of the hammer mill machine, which is the second largest electric energy consumption in a plant. The method that can be done to achieve this is by setting the screen position and setting the right blower opening. Standard screen specifications will maximize the capacity of the grinding process and produce optimum granulation. In order to get the maximum grinding capacity, DFCO can be set at the maximum but will have an effect on the motor current during the grinding process, the average current will tend to be high. The aim of this research was to determine the effect of variations in the screen’s and blower’s position settings on the capacity and granulation of raw materials from the grinding process. The usage of 2.5 mm and 3 mm diameters screens, as well as adjusting the screen position of 2.5 mm at the top and 3 mm at the bottom, resulted in better capacity and granulation than using a screen with only 3 mm diameter. The larger the blower and DFCO openings, the greater the grinding capacity, but also increased the motor current. The larger the blower opening, the greater the decrease in the water content of grinding raw materials.
Simulasi Pemograman Pengendali PWM Kecepatan dengan Mikrokontroler Arduino berbasis Sensor Ultrasonik HC-SR04 pada Purwarupa Mobil Listrik Dwi Aji Saputra; Bana Handaga; Marwan Effendy; Dimas Ardiansyah Halim
Accurate: Journal of Mechanical Engineering and Science Vol. 1 No. 2 (2020): October 2020
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v1i2.328

Abstract

The braking process is the basis in the making of the PWM speed control system in order for electric cars to be able to stop automatically and increase the driving safety. The usage of an electric motor as a wheel drive for an electric car allows controlling with a microcontroller. Based on the journal about electric motor control, it is necessary to study the use of PWM as a speed controller. The C language as a coding language can be understood by the Arduino microcontroller with the aim of regulating the speed of the electric motor. The research objective was to use the C language programming as a PWM speed controller with the Arduino microcontroller. The methodology used in this study was to modify a remote control car (RC) made as a prototype electric car. The Arduino microcontroller system was installed and programmed in C language as a PWM speed controller. The main sensor tool used was the ultrasonic distance sensor as the microcontroller input data. Direct current (DC) motors on RC cars were regulated with a pulse width modulation (PWM) signal as the output from the Arduino. LCD and buzzer were used as display devices and indicators of safe distances between prototypes and obstructions. The test results showed that the detection distance of the ultrasonic sensor reached 2 cm to 500 meters. Then the acceleration data obtained by pulse width modulation 64 at 1 meter distance, 127 at 3 meter distance, 191 at 4 meter distance, 225 at 5 meter distance and was made in graphic form. In a speed control system, the usage of the Arduino UNO microcontroller was easy to apply and had complete features. The series of speed control systems could be applied to electric cars with the PWM slow reduction criteria in two stages. The PWM lowering process took 1 second after the sensor detects an obstruction object.
Rancang Bangun Sistem Automatic Semi Returnless Berbasis Arduino Uno pada Engine Caterpillar C27 Studi Kasus PT. Sapta Indra Sejati Widi Achmad Sukisno, Sulis; Suparno, Joko; Ardiansyah Halim, Dimas
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1508

Abstract

Pump units with a Caterpillar C27 engine with an EUI (Electronic Unit Injector) fuel system that often has low power due to filter clogging at PT. Sapta Indra Sejati. Filter cloggingoccurs due to due to the thickened biofuel content and creates a crust. If the machine has a problem, the mining process can be disrupted because the coal loading area is flooded. This study aims to create an additional system in the form of a automatic semi-returnless where the fuel return line is changed automatically into the filter because the fuel return is clean. The movement of the return control valve is regulated by a microcontroller which is programmed according to specifications and needs. The microcontroller used is Arduino Unowith pressure and temperature sensors. Arduino Uno is programmed when the engine will experience low power with a fuel pressure of 400 kPa then the return path is changed to semi returnless. With a change in the semi returnless path, the pressure becomes stable at 380 kPa and the engine RPM is stable with power that is still maintained. The advantages of semi-returnless system are that filter replacement costs can be reduced and production time is not interrupted.
Electrochemical Characterization Techniques for Performance Optimization in Dye-sensitized Solar Cells: A Narrative Review Purnomo, Agung; Aziizudin, Achmad; S, Arbye; Yogiswara, Cahyo Wibi; Halim, Dimas Ardiansyah; Putra, Setya Drana Harry
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 6 No 3 (2024): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v6i3.351

Abstract

Dye-sensitized solar cells (DSSCs) offer advantages such as low production costs, simple fabrication methods, and reduced toxicity compared to silicon-based solar cells, although their efficiency remains a major limitation. The aim of this review is to discuss the fundamental principles of DSSCs and evaluate the electrochemical techniques used to optimize their performance. The method employed is a narrative literature review, allowing the author to synthesize relevant literature from various sources. Current-voltage (I-V) measurements and electrochemical impedance spectroscopy (EIS) are identified as the primary tools for assessing DSSC efficiency and quality. The findings indicate that I-V measurements provide critical metrics such as efficiency and fill factor, while EIS helps identify charge transfer resistance and improves cell stability. Techniques such as voltammetry and Tafel polarization plots offer additional insights into catalytic activity and diffusivity. This review underscores the importance of electrochemical characterization in supporting efficiency improvements and the development of new materials, with EIS playing a key role in modelling cell morphology through equivalent circuit analysis.
Optimisasi Whisper Speech-to-Text Bahasa Indonesia dengan Hybrid Cloud dan Multi-Engine Ikhwan Alfath Nurul Fathony; Affix Mareta; Beta Estri Adiana; Olivia Wardhani; Dimas Ardiansyah Halim
Elkom: Jurnal Elektronika dan Komputer Vol. 18 No. 1 (2025): Juli : Jurnal Elektronika dan Komputer
Publisher : STEKOM PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/5n2d3s08

Abstract

Automatic Speech Recognition (ASR) for the Indonesian language faces significant challenges due to high Word Error Rate (WER), especially when using pre-trained models without fine-tuning. This study develops an optimized ASR system using a hybrid cloud architecture that integrates the Faster-Whisper large-v3 engine with advanced audio preprocessing techniques. The system adopts a distributed architecture, with Google Colab (Tesla T4, 15GB VRAM) as the GPU server and Ubuntu 22.04 LTS (8 core, 32GB RAM) as the client. Evaluation was conducted on five Indonesian audio samples covering formal news, informal conversations, and long-duration recordings. The system achieved an 80% success rate in processing, with WER ranging from 27.69% (formal news) to 645.16% (informal conversations). Resource utilization was also efficient, with 21.3% GPU usage and 35.4% RAM usage. Processing time remained stable for normal-sized files but experienced timeouts on large files (>50MB). The results indicate that hybrid cloud architecture is feasible for distributed ASR processing in Indonesian, with several areas still open for optimization toward production deployment.
Design of Universal Jig for Standardization and Efficiency of Frame Production Chopper Motorcycle Halim, Dimas Ardiansyah; Murdiono, Mohamad Bimo; Suparno, Joko; Aziizudin, Achmad; Purnomo, Agung; S, Arbye; Yogiswara, Cahyo Wibi; Putra, Setya Drana Harry
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 11, No 2 (2025): October
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v11i2.28487

Abstract

Chopper motorcycle frames had a fierce and macho impression on users. The frame was characterized by high handlebars, long front legs and a low seat. Chopper motorcycles were suitable for casual riding. Therefore, the Chopper frame must be specially designed or custom-made. Making the frame required a jig to maintain precision and dimensional accuracy in accordance with the original frame. Making a universal jig allowed craftsmen to make Chopper frames according to market demand without leaving the center balance on the frame. The jig manufacturing process included material selection, measurement, material cutting, machining, jig calibration, jig assembly, welding, checking and finishing. The welding process used argon TIG welding. The use of the jig shortened the frame manufacturing time by 2 times faster and minimizes wasted frame material due to dimensional errors.
Pembuatan Sumur Resapan untuk Penanggulangan Banjir di Salatiga Sumbogo, Yuliarto Joko; Halim, Dimas Ardiansyah; Suparno, Joko; Prasetyawati, Erlina
Research Journal of Social Economics Empowerment Vol. 1 No. 1 (2025): February 2025
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/rosee.v1i1.2420

Abstract

Perubahan cuaca ekstrem yang menyebabkan kekurangan air pada musim kemarau dan banjir pada musim hujan telah menjadi masalah lingkungan yang signifikan. Selain itu, rendahnya kemampuan tanah, terutama di kawasan perumahan dan gedung perkantoran, dalam meresap air hujan semakin memperburuk keadaan. Salah satu solusi untuk mengatasi masalah ini adalah pembangunan sumur resapan, yang berfungsi menampung air hujan dan memungkinkan air meresap ke dalam tanah. Penelitian ini bertujuan untuk mengatasi masalah banjir dan meningkatkan daya serap air ke dalam tanah melalui pembuatan sumur resapan di wilayah Salatiga. Metode pelaksanaan meliputi pembuatan sumur resapan dengan berbagai konstruksi, seperti sumur tanpa pasangan di dinding, sumur dengan batu bata atau batu kali, serta sumur dengan dinding besi beton atau blawong, yang disesuaikan dengan kondisi tanah. Hasil dari program ini menunjukkan bahwa sumur resapan efektif mengurangi aliran permukaan, mengatasi banjir, mengisi ulang cadangan air tanah, serta mencegah erosi dan pencemaran air tanah. Selain itu, sumur resapan juga dapat mengurangi beban pada sistem drainase kota. Kesimpulannya, pembangunan sumur resapan merupakan solusi yang efektif dalam pengelolaan air hujan, yang dapat mengurangi dampak banjir, meningkatkan kualitas air tanah, serta menjaga keseimbangan ekosistem di wilayah perkotaan.
Rancang Bangun Sistem Automatic Semi Returnless Berbasis Arduino Uno pada Engine Caterpillar C27 Studi Kasus PT. Sapta Indra Sejati Widi Achmad Sukisno, Sulis; Suparno, Joko; Ardiansyah Halim, Dimas
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1508

Abstract

Pump units with a Caterpillar C27 engine with an EUI (Electronic Unit Injector) fuel system that often has low power due to filter clogging at PT. Sapta Indra Sejati. Filter cloggingoccurs due to due to the thickened biofuel content and creates a crust. If the machine has a problem, the mining process can be disrupted because the coal loading area is flooded. This study aims to create an additional system in the form of a automatic semi-returnless where the fuel return line is changed automatically into the filter because the fuel return is clean. The movement of the return control valve is regulated by a microcontroller which is programmed according to specifications and needs. The microcontroller used is Arduino Unowith pressure and temperature sensors. Arduino Uno is programmed when the engine will experience low power with a fuel pressure of 400 kPa then the return path is changed to semi returnless. With a change in the semi returnless path, the pressure becomes stable at 380 kPa and the engine RPM is stable with power that is still maintained. The advantages of semi-returnless system are that filter replacement costs can be reduced and production time is not interrupted.
Co-Authors Achmad Aziizudin Agung Purnomo Anugerah Bima Wijaya Anwar Nurharyanto Anwar Nurharyanto Arbye S Augustinus Sujono Azzahra Nazwa Asyifa Bana Handaga Beta Estri Adiana Didik D Susilo Dwi Aji Saputra Eko Surojo Fahrul Budiawan Ikhwan Alfath Nurul Fathony Joko Suparno Kautzar Rizki Diptaseptian Mareta, Affix Marwan Effendy Muhammad Syahrul Sidiq Mukhlis Ibrahim Murdiono, Mohamad Bimo Olivia Wardhani Prasetyawati, Erlina Purnomo, Agung Putra, Setya Drana Harry Putra, Setya Drana Harry Ratih Ratna Suminar Sumbogo, Yuliarto Joko Suparno, Joko Suparno, Joko Unggul Satria Jati Widi Achmad Sukisno, Sulis Yogiswara, Cahyo Wibi Yuliarto Joko Sumbogo