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All Journal Journal of Oceanography Omni-Akuatika Infotekmesin Jurnal Manajemen Transportasi & Logistik (JMTRANSLOG) Jurnal Teknologi dan Manajemen Journal of Mechanical Engineering, Science, and Innovation Hexagon Journal of Community Services in Sustainability
Ridho Hans Gurning
Politeknik STMI Jakarta
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Other

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PENGARUH ARUS TERHADAP MUATAN PADATAN TERSUSPENSI DI MUARA SUNGAI DAN SEKITAR PERAIRAN KESUNEAN, CIREBON Gurning, Ridho Hans; Rochaddi, Baskoro; Widada, Sugeng
Journal of Oceanography Vol 5, No 4 (2016)
Publisher : Program Studi Oseanografi, Jurusan Ilmu Kelautan, Universitas Diponegoro

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

Abstract

Muara Sungai Kesunean memiliki potensi terjadinya pendangkalan akibat pengendapan sedimen tersuspensi yang sangat tinggi. Pendangkalan ini tentunya berdampak negatif terhadap kondisi perairan seperti terhambatnya aliran sungai ke laut dan lebar sungai menjadi kecil. Potensi terjadinya pendangkalan dapat diketahui dengan mengetahui besar konsentrasi sedimen tersuspensi, kondisi arus dan pasang surut. Tujuan dilakukannya penelitian ini adalah untuk mengetahui pengaruh arus terhadap distribusi konsentrasi muatan padatan tersuspensi di muara sungai dan sekitar Perairan Kesunean, Cirebon. Penelitian dilakukan pada tanggal 7 – 15 April 2015 di Perairan Kesunean, Cirebon. Metode penelitian yang digunakan adalah metode kuantitatif. Penentuan lokasi pengambilan titik lokasi dengan menggunakan metode random sampling dan pengambilan sampel air di kedalaman 0.2d, 0.6d, 0.8d pada 7, 11, dan 15 April 2016. Analisis sampel sedimen tersuspensi di laboratorium menggunakan metode Gravimetri. Peta sebaran sedimen tersuspensi diinterpolasi menggunakan software ArcGIS 10.0 dan pemodelan arus laut menggunakan software MIKE 21. Hasil pengolahan data lapangan menunjukkan bahwa konsentrasi muatan padatan tersuspensi berkisar antara 44,44 – 300 mg/l, kecepatan arus berkisar antara 0,0069 – 0,6231 m/s dan tipe pasang surut di Perairan Cirebon ialah pasang surut campuran condong harian ganda. Terdapat nilai korelasi antara kecepatan arus (m/s) dengan konsentrasi muatan padatan tersuspensi (mg/l) berkisar antara 0,729 – 0,895
Dwelling Time Analysis Using Dynamic System Model in the Implementation of National Logistics Ecosystem at Port Jakarta International Container Terminal Ridho Hans Gurning; Achmad Riadi
Journal Omni-Akuatika Vol 18 (2022): Omni-Akuatika Special Issue 4th Kripik SCiFiMaS
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.S1.973

Abstract

Efficient dwelling time loading and unloading at the port has been widely done. Behind this research was carried out the implementation of the National Logistics Ecosystem (NLE) by using a dynamic system to reduce dwelling loading and unloading time at the Port of Jakarta International Container Terminal. The purpose of research were to find out the development of dynamic system models and the impact of NLE implementation in reducing dwelling time. This research method used dynamic system models and validation tests with behavior pattern tests. The validation results of the dynamic system model were obtained dwelling time between 2.79 - 4.56 days, mean error by 3% and standard deviation error by 11% and the implementation of NLE caused a decrease in dwelling time between 0.96 - 2.30 days, resulting in a decrease in dwelling time by 70%. The results of simulated container flows between 120,909 - 195,212 containers, mean error by 0% and standard deviation error by 19% with the application of NLE container flows between 132,952 - 200,077 containers. The results of the simulation of unloading quantity of 67,295 – 103,342 TEU's, mean error by 1% and standard deviation error by 24% with the application of NLE between 86,169 – 108,032 TEU's, average – average of 96,712 TEU's / month, there was an increase in the quantity of unloading by 130 TEU's / month. The implementation of NLE can be applied to port operationsKeywords: Dwelling Time, Port, National Logistic Ecosystem, Dynamic System Model 
Analysis of the Effect of Quay Container Crane Available on Dwelling Time at Jakarta International Container Terminal Gurning, Ridho Hans; Dendra, Feby Gusti; Shalihah, Adinda Rahmah
Jurnal Teknologi dan Manajemen Vol. 22 No. 2 (2024): JURNAL TEKNOLOGI DAN MANAJEMEN (AUGUST)
Publisher : Politeknik STMI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52330/jtm.v22i2.309

Abstract

The efficiency of loading and unloading dwelling time at the port has been done a lot. The problem at PT JICT is that there has been a decrease in throughput for the last three years, this has an effect on operational performance. operational performance is a representation of the achievement of all targets, thus the company always aims to improve its operational performance. Another problem is that the terminal's operational equipment has begun to be obsolete, which hinders the loading and unloading operation time, the lack of operational equipment that supports the loading and unloading process. The operational equipment studied is the Quay Container Crane which is seen from the available condition. All of these problems will have an impact on dwelling time at PT JICT which can affect operational performance. This research is expected to provide recommendations to PT Jakarta International Container Terminal to prepare adequate operational equipment so that the resulting dwelling time is known. This research method uses a dynamic system model and validation test with behavior pattern test. The results of the dynamic system model validation obtained dwelling time between 2.79 - 4.56 days, mean error of 3% and standard deviation error of 11%. Maintenance of quay container cranes has an influence on unloading productivity which has an impact on dwelling time. Based on 60 data, the quay container crane available variable is seen based on quartile values consisting of quartile 1 (Q1), quartile 2 (Q2) and quartile 3 (Q3). In the quay container crane available variable, the dwelling time value in quartile one is 1.34 days, quartile two is 1.47 and quartile three is 1.51 and the dwelling time value in quartile one is 14 units, quartile two is 12 units and quartile three is 10 units.
Sosialisasi K3 Dan 5R Pada Bengkel May Car Bodyworks Gurning, Ridho Hans; Arohman, Abdul Wahid; Shalihah, Adinda Rahmah
Journal of Community Services in Sustainability Vol. 3 No. 1 (2025): Journal of Community Services in Sustainability (April 2025)
Publisher : Politeknik STMI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52330/jocss.v3i1.431

Abstract

Basically, every job will have its own safety hazard risk factors, especially the automotive industry. Automotive industry work practices have Occupational Safety and Health (K3) risks for all workers in the work environment. Potential hazards that will be faced include exposure to chemicals, infections, allergies, electricity and physical such as slipping, falling, being scratched, stabbed, and hit which depend on the type of activity carried out in the area. Seeing aspects of the physical work environment such as the layout of practice equipment, personal protective equipment, work clothes, cleanliness of the room, lighting, irrigation, air conditioning in the work space is very important in creating a safe environment free from the risk of accidents or occupational diseases. This is what drives the Abdimas team to encourage socialization and implementation of K3 and 5R at the May Car Bodyworks Workshop with the aim of increasing efficiency, productivity, and quality in work activities at the Workshop. This activity uses a descriptive qualitative method, where the technique of collecting data information is selected in a specific way, and uses observation methods with interviews and documentation and is analyzed in the application. The results obtained are in the form of a report on the implementation and application of the 5R program in the Workshop and can implement the 5R and K3 culture programs.
Comparative Assessment of Spot Welding and Lock Seam on Automotive Inner Tubes for QCDSM and Product Lifecycle Sustainability Nurhadi, Hikari Qurrata'ain; Mustofa, Mustofa; Solih, Edwin Sahrial; Gurning, Ridho Hans
Journal of Mechanical Engineering, Science, and Innovation Vol 5, No 1 (2025): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2025.v5i1.7481

Abstract

In the automotive manufacturing industry, enhancing quality and productivity is crucial to meet customer expectations while ensuring safety, environmental sustainability, and energy efficiency. This study evaluates the collapse strength of automotive inner tubes following ISO 2941 standards, comparing lock seam design with SGCC material and resistance spot welding (RSW) applied to SECD material. The findings show that the lock seam process improves structural strength by approximately 20%, due to more uniform pressure distribution, leading to better stability. A key advantage of the lock seam is its spiral construction, which contrasts with RSW's localized spot welds, contributing to more consistent performance. Additionally, the lock seam process reduces production costs and minimizes environmental impact by using thinner, cost-effective SGCC material. It also enables faster production, enhancing delivery efficiency. The absence of welding fumes improves safety conditions and boosts operator morale, while contributing to a cleaner working environment. From a Product Lifecycle Management perspective, this study shows that the lock seam process optimizes design quality, production efficiency, and sustainability, aligning with the goals of Quality, Cost, Delivery, Safety, and Morale (QCDSM). These results support the adoption of lock seam technology for sustainable, efficient automotive manufacturing.
Reduction Cost in Material Spring-type Coil for Heavy-duty Oil Filter By-pass System with Redesigning Solih, Edwin Sahrial; Gurning, Ridho Hans; Satria, Adam; Edwin Sahrial Solih; Purbaningrum, Sanurya Putri; Arohman, Abdul Wahid; Ridho
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2665

Abstract

The bypass system in oil filters plays a crucial role in maintaining engine cleanliness and performance by allowing oil to flow through the filter when the pressure exceeds set limits. A critical component of this system is the coil spring that controls the bypass valve. In this study, an experimental approach was applied to reduce material cost while preserving performance. We redesigned the spring from four coils of 3.5 mm diameter to three coils of 3 mm diameter, using the same standard hard steel wire SW‑C. The redesigned springs were subjected to a standard impulse test of 250,000 cycles under 7 kgf/cm² pressure and a loading test with deflections from 1 to 10 mm at pressures up to 11 kgf. Results show that the new three‑coil SW‑C spring meets all performance criteria: impulse life and load‑deflection characteristics fall within standard tolerances. A direct comparison with the original design demonstrates negligible differences in functional behavior, confirming that material usage and costs can be reduced without sacrificing reliability. These findings offer valuable guidance for the cost‑efficient production of oil filter components in automotive engineering.
Simulasi Desain Sistem 1D Vibration Assisted Machining pada Pemesinan Milling Adinda Rahmah Shalihah; Ridho Hans Gurning; Agil Wirandhanie; Fais Ramadan
Hexagon Vol 6 No 1 (2025): HEXAGON - Edisi 11
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/hexagon.v6i1.5105

Abstract

Vibration Assisted Machining (VAM) adalah suatu metode pemotongan dengan ditambahkan getaran pada mata pahat atau benda kerja dengan frekuensi dan amplitudo tertentu untuk meningkatkan performa pemotongan dan kualitas permukaan hasil pemesinan. VAM dapat diterapkan pada beberapa proses pemesinan seperti drilling, turning, grinding, dan milling. Berdasarkan arah getaran yang dihasilkan, terdapat dua tipe yaitu 1D VAM dimana arah getaran searah dengan sumbu aktuator, dan 2D VAM dimana arah getaran membentuk pergerakan elips. Baik penerapan 1D VAM maupun 2D VAM pada proses pemesinan milling masih terbilang minim. Untuk itu, tujuan dari penelitian ini adalah untuk menghasilkan alternatif desain sistem 1D VAM dengan menggunakan piezoelectric ring actuator sebagai komponen utama penghasil getaran. Desain yang diusulkan kemudian dilakukan simulasi berupa simulasi modal dan simulasi harmonic response dengan menggunakan metode Finite Element Analysis (FEA). Flexure hinge juga diterapkan pada desain yang diusulkan dengan dimensi ketebalan sebesar 5 mm dan radius notch sebesar 5 mm. Hasil yang didapatkan adalah desain ini mampu bekerja secara optimal pada frekuensi kerja 17.510 Hz dengan perpindahan amplitudo pada sumbu Z sebesar 0,0000094 mm, dan nilai dari equivalent von mises stress maksimum sebesar 24,447 MPa, membuat desain ini layak untuk dilakukan uji eksperimental kedepannya.
Sustainable Transport Assessment through Passenger Density and Operational Headway Sumasto, Fredy; Gurning, Ridho Hans; Pratama, Indra Rizki; Arohman, Abdul Wahid; Purbaningrum, Sanurya Putri
Jurnal Manajemen Transportasi & Logistik (JMTRANSLOG) Vol. 12 No. 3 (2025): November
Publisher : Institut Transportasi dan Logistik Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54324/j.mtl.v12i3.1991

Abstract

This study investigates the operational performance and sustainability of two urban minibus routes D41 (Gandaria–Cibinong) and D37 (Cibinong–Kampung Rambutan) in the Depok–Bogor region of Indonesia. Using field observations and GPS-assisted time tracking, three indicators were analyzed: passenger load factor, operational headway, and travel time. Results show that while both routes exceeded the government’s 70% load factor benchmark during peak hours, performance dropped below 50% at midday. Headway generally remained within the acceptable range of 2–5 minutes, but D37 exhibited the shortest intervals during morning peaks. D37 also experienced prolonged travel times, often exceeding 80 minutes. These findings highlight the inefficiencies of informal public transport systems, particularly their inability to scale services to match fluctuating demand. This study proposes a low-cost, data-driven framework for assessing route efficiency and supports the integration of informal routes into broader transport planning. The results are relevant to urban mobility reform in developing cities.
Co-Authors Abdul Wahid Arohman Adinda Rahmah Shalihah Agil Wirandhanie Baskoro Rochaddi Fais Ramadan Feby Gusti Dendra Indra Rizki Pratama Mustofa Mustofa Nurhadi, Hikari Qurrata'ain Riadi, Achmad Ridho Sanurya Putri Purbaningrum Satria, Adam Shalihah, Adinda Rahmah Solih, Edwin Sahrial Sugeng Widada Sumasto, Fredy