Garuda - Garba Rujukan Digital

Neural Network-Based Image Processing for Tomato Harvesting Robot Oktarina, Yurni; Sukwadi, Ronald; Wahju, Marsellinus Bachtiar
Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Vol. 8, No. 3, August 2023
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/kinetik.v8i3.1723

Agriculture is one of the areas that can benefit from robotics technology, as it faces issues such as a shortage of human labor and access to less arid terrain. Harvesting is an important step in agriculture since workers are required to work around the clock. The red ripe tomatoes should go to the nearest market, while the greenest should go to the farthest market. Harvesting robots can benefit from Neural Network-based image processing to ensure robust detection. The vision system should assist the mobility system in moving precisely and at the appropriate speed. The design and implementation of a harvesting robot are described in this study. The efficiency of the proposed strategy is tested by picking red-ripened tomatoes while leaving the yellowish ones out of the experimental test bed. The experiment results demonstrate that the effectiveness of the proposed method in harvesting the right tomatoes is 80%.

Desain dan Investigasi Dinamometer 3 Sumbu di Mesin CNC Router untuk Material Polimer dengan metode VDI 2221 Utomo, Archi Kun Cahyo; Sutanto, Hadi; Wahju, Marsellinus Bachtiar; Adi, Novi Misgi P.; Prakosa, Taji Harya; Wijaya, Dikky Kusuma
AL-JAZARI JOURNAL SCIENTIFIC OF MECHANICAL ENGINEERING VOLUME 9, ISSUE 1, MEI 2024
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al Banjari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/al-jazari.v9i1.14568

Kepuasan pelanggan dapat tercapai dengan kualitas produk yang baik. Sistem pengendalian sangat diperlukan untuk menjamin mutu suatu produk. Metode desain VDI (Verein Deutcher Ingenieure) 2221 digunakan untuk mencari solusi terbaik, optimalisasi penggunaan material, dan optimalisasi teknologi. Tahapan perancangan cover dinamometer menggunakan VDI 2221 adalah klarifikasi tugas, perancangan konseptual, perwujudan konsep, dan perancangan detail. Proses pembuatan, perakitan, pemasangan, dan pengoperasiannya relatif mudah. Yang terpilih adalah varian desain 3 dengan proses 3D printing PLA karena lebih kuat, murah, dan mudah dari varian desain lainnya. Dinamometer menggunakan loadcell sebagai sensor berat dan arduino uno sebagai controller. Beban penyayatan yang terbesar terdapat pada sumbu Z, semakin besar kedalaman pemakanan semakin tinggi beban penyayatan.

Pengembangan Alat Pengolah Limbah Styrofoam Metode Termal-Ekstruksi Setiawan, Dibyo; Triyono, Budi; Sutanto, Hadi; Bachtiar, Marsellinus; Hafyyan, Iqbal; Istighfari, Nurrahman
Majamecha Vol. 6 No. 1 (2024): Majamecha
Publisher : Program Studi Teknik Mesin, Fakultas Teknik, Universitas Islam Majapahit, Mojokerto, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36815/majamecha.v6i1.3235

Mesin pengolah limbah styrofoam metode termal-ekstruksi digunakan untuk mengolah limbah styrofoam menjadi polistirena padat. Mesin ini memiliki konsep mereduksi, limbah styrofoam yang memiliki volume besar dapat direduksi sehingga memiliki volume yang lebih kecil. Pada penelitian ini dilakukan pengembangan mesin pengolah limbah styrofoam agar target kapasitas pengolahan sebesar 5 kg/jam dapat tercapai. Pada penelitian ini juga dilakukan eksperimen atau pengujian prototipe mesin pada tiga variasi temperatur yaitu 180-200?C, 220-240 ?C, dan 240-250?C. Berdasarkan data hasil pengujian, prototipe mesin hasil dari penelitian ini terbukti dapat mengolah limbah styrofoam dengan kapasitas 5,47 kg/jam pada temperatur operasi 240-250 °C menjadi polistirena padat dengan reduksi volume hingga 38 kali.

Studi Numerik Pengaruh Aliran Aksial Terhadap Aliran Taylor Vortex Turbulent Dengan Perpindahan Kalor Assagaf, Iman Pradana A; Susanto, Hadi; Bachtiar, Marsellinus; Prasetiyo, Angger Bagus; Dahlan, Masbin; Sulfiana, Enni; Amaluddin, Muh Nurul Haq
Majamecha Vol. 6 No. 1 (2024): Majamecha
Publisher : Program Studi Teknik Mesin, Fakultas Teknik, Universitas Islam Majapahit, Mojokerto, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36815/majamecha.v6i1.3249

Pengaruh aliran aksial terhadap aliran Taylor Vortex Turbulent dengan perpindahan kalor dengan teliti dengan menggunakan metode numerik. Parameter geometri pada penilitian dengan radius ratio 0, 714 dan aspect ratio 10 dengan bilangan Reynold melingkar antara 2596 sampai dengan 9087, kemudian Aliran aksial dengan temperatur pada silinder dalam (Ti) yaitu sebesar 50 °C dan temperatur silinder luar (To) adalah 90 °C . Hasil penelitian menunjukan bahwa Aliran turbulen dalam aliran Taylor-Couette dengan aliran aksial dicirikan oleh struktur vortex yang kompleks dan tidak beraturan. Koefisien perpindahan kalor pada kondisi konveksi di sekitar silinder dalam lebih tinggi dibandingkan dengan kondisi sedangkan untuk silinder luar kondisi diam dengan no slip condition. Peningkatan torsi akibat putaran silinder dalam aliran dipengaruhi oleh sel-sel vortex dalam aliran turbulen, yang juga menyebabkan kenaikan torsi gesekan.

Penerapan Data Driven Decision Making dalam Perspektif Pemilik dan Operator Kapal Wahyu, Marsellinus Bachtiar
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 10 No 2 (2024): OKTOBER 2024
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v10i2.6018

The maritime industry’s crucial role in the global economy is vital, serving as the lifeline for the distribution of commercial goods worldwide. Data-Driven Decision Making (DDDM) in the maritime sector has the potential to be a game changer. By utilizing data obtained from sensors, communication tools, and integrated systems, operators can optimize fleets, improve fuel efficiency, and enhance maintenance scheduling. From the perspective of ship owners/operators, decisions regarding scheduling, operations, docking, and crew management are prioritized to ensure company profitability. Current business practices necessitate exploring the benefits of using DDDM in decision-making for ship owners/operators. The use of Big Data and DDDM approaches offers advantages such as cost efficiency and improved fleet performance. Data collection and analysis in the maritime sector include various methods, such as Automatic Identification Systems (AIS), weather data, and onboard sensor equipment. Implementing DDDM presents several challenges from the perspective of ship owners/operators, including data quality and availability, system integration, high implementation costs, regulatory compliance, and resistance to change.

Desain dan Investigasi Dinamometer 3 Sumbu di Mesin CNC Router untuk Material Polimer dengan metode VDI 2221 Archi Kun Cahyo Utomo; Hadi Sutanto; Marsellinus Bachtiar Wahju; Novi Misgi P. Adi; Taji Harya Prakosa; Dikky Kusuma Wijaya
AL-JAZARI JOURNAL SCIENTIFIC OF MECHANICAL ENGINEERING Volume 9, Issue 1, Mei 2024
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al Banjari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/al-jazari.v9i1.14568

Kepuasan pelanggan dapat tercapai dengan kualitas produk yang baik. Sistem pengendalian sangat diperlukan untuk menjamin mutu suatu produk. Metode desain VDI (Verein Deutcher Ingenieure) 2221 digunakan untuk mencari solusi terbaik, optimalisasi penggunaan material, dan optimalisasi teknologi. Tahapan perancangan cover dinamometer menggunakan VDI 2221 adalah klarifikasi tugas, perancangan konseptual, perwujudan konsep, dan perancangan detail. Proses pembuatan, perakitan, pemasangan, dan pengoperasiannya relatif mudah. Yang terpilih adalah varian desain 3 dengan proses 3D printing PLA karena lebih kuat, murah, dan mudah dari varian desain lainnya. Dinamometer menggunakan loadcell sebagai sensor berat dan arduino uno sebagai controller. Beban penyayatan yang terbesar terdapat pada sumbu Z, semakin besar kedalaman pemakanan semakin tinggi beban penyayatan.

Adopsi Kecerdasan Buatan (AI) dalam Industri Maritim: Peluang, Tantangan, dan Implikasinya terhadap Efisiensi Operasional Wahju, Marsellinus Bachtiar; Bachtiar , Marsellinus
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 11 No 1 (2025): April 2025
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v11i1.6654

This paper discusses the adoption of Artificial Intelligence (AI) in Indonesia's maritime industry, focusing on port operational efficiency. Using literature review and case analysis approaches, the study identifies port business processes, key stakeholders, and digital systems such as INAPORTNET, CEISA, TOS, VMS, Auto Gate, and STID. The readiness of AI adoption at Tanjung Priok Port is assessed based on indicators including technological infrastructure, operational automation, system integration, human resource competence, operational efficiency, and environmental impact. Findings indicate that while digitalization initiatives are ongoing, AI implementation remains at an early stage. Opportunities lie in productivity, safety, and sustainability improvements, while key challenges include digital infrastructure limitations, system integration issues, regulatory gaps, and human resource constraints. The paper concludes that a phased and collaborative strategy among the government, port operators, and industry players is essential to accelerate AI-driven digital transformation in the maritime sector.

Adopsi Kecerdasan Buatan (AI) dalam Industri Maritim: Peluang, Tantangan, dan Implikasinya terhadap Efisiensi Operasional Wahju, Marsellinus Bachtiar; Bachtiar , Marsellinus
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 11 No 1 (2025): April 2025
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v11i1.6654

This paper discusses the adoption of Artificial Intelligence (AI) in Indonesia's maritime industry, focusing on port operational efficiency. Using literature review and case analysis approaches, the study identifies port business processes, key stakeholders, and digital systems such as INAPORTNET, CEISA, TOS, VMS, Auto Gate, and STID. The readiness of AI adoption at Tanjung Priok Port is assessed based on indicators including technological infrastructure, operational automation, system integration, human resource competence, operational efficiency, and environmental impact. Findings indicate that while digitalization initiatives are ongoing, AI implementation remains at an early stage. Opportunities lie in productivity, safety, and sustainability improvements, while key challenges include digital infrastructure limitations, system integration issues, regulatory gaps, and human resource constraints. The paper concludes that a phased and collaborative strategy among the government, port operators, and industry players is essential to accelerate AI-driven digital transformation in the maritime sector.

Kajian pendahuluan penentuan tingkat utilitas pekerja proses filling stasiun kerja cup filling di perusahaan air minum dalam kemasan Yanto, Yanto; Wahju, Marsellinus Bachtiar
Metris: Jurnal Sains dan Teknologi Vol. 20 No. 02 (2019): Desember
Publisher : Prodi Teknik Industri, Fakultas Teknik - Universitas Katolik Indonesia Atma Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/metris.v20i2.2414

This study aims to determine the utilization of the worker’s time in the filling process, packaging department, a cup and bottled water company. Considering the aim of the study and the task characteristics, work sampling technique was used. Two production lines and two work stations were selected for time studyanalysis. In each work station, two workers with different tasks were involved for the time analysis. A number 586 and 1710 observations from Worker 1 in Line 1 and Line 2, and 586 and 1440 observations from Worker 2 in Line 1 and Line 2 were taken and observed. Results showed that the utilization of worker’s time are 31.7% and 33.6 % of Worker 1 in Line 1 and Line 2, and 25.6% and 21.0% of Worker 2 in Line 1 and Line 2. Results of significant testing showed that no significant differences were found for workers’ time utilization between Worker 1 in Line 1 and Worker 1 in Line 2 (Z=-0.82, p=0.41) and between Worker 2 in Line 1 and Worker 2 in Line 2 (Z=2.17, p=0.03) for α=0.01. Regarding findings in this study, it is reasonable for the management to consider work station which one worker per machine instead of two workers per one machine.

Analisis Kepuasan Pelayanan dan Faktor yang Mempengaruhi Keputusan Pelanggan untuk Memilih Smartphone Samsung di Jabodetabek Menggunakan Metode IPA dan Model Kano v, Marsellinus Bachtiar; ., Cassidy
Metris: Jurnal Sains dan Teknologi Vol. 21 No. 02 (2020): Desember
Publisher : Prodi Teknik Industri, Fakultas Teknik - Universitas Katolik Indonesia Atma Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/metris.v21i02.2498

Smartphones are one of the must-have devices for modern society today. With the high demand for smartphones lately, many companies are competing to produce smartphones that suit consumer needs. Indonesia is one of the developing countries where the growth rate of smartphone use can still increase so that many smartphone manufacturers sell their products to Indonesia. From this phenomenon, researchers want to know the level of satisfaction of users of one of the leading smartphone brands in Indonesia and even in the world, namely Samsung. The purpose of this study is to determine what factors are considered good by customers and the company must maintain these services and what things are deemed not good and need to be improved again. This study uses the IPA method to determine the level of conformity between company services and customer expectations and the Kano model used to determine which services are included in the performance, basic, or delighter categories. From the results of these two methods can be integrated using the IPA-Kano integration table. Some things that still need to be improved from Samsung smartphones according to users who have filled out this questionnaire include good quality materials at a good selling price, attractive and modern product designs, product quality has a good price level, sufficient camera quality for purposes daily needs, and bonuses that make consumers satisfied.

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