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Ahmad Ashifuddin Aqham
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PUSAT RISET DAN INOVASI NASIONAL UNIVERSITAS SAINS DAN TEKNOLOGI KOMPUTER Alamat: Jl. Majapahit No.304, Palebon, Kec. Pedurungan, Kota Semarang, Jawa Tengah 50199
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INDONESIA
Jurnal Riset Rumpun Ilmu Teknik (JURRITEK)
ISSN : 28290178     EISSN : 2829016X     DOI : 10.55606
Sub Rumpun TEKNIK SIPIL DAN PERENCANAAN TATA RUANG 1. Teknik Sipil 2. Teknik Lingkungan 3. Rancang Kota 4. Perencanaan Wilayah dan Kota 5. Teknik Pengairan 6. Teknik Arsitektur 7. Teknologi Alat Berat 8. Transportasi 9. Bidang Teknik Sipil Lain Yang Belum Tercantum Sub Rumpun ILMU KETEKNIKAN INDUSTRI 1. Teknik Mesin (dan Ilmu Permesinan Lain) 2. Teknik Produksi (dan Atau Manufakturing) 3. Teknik Kimia 4. Teknik (Industri) Farmasi 5. Teknik Industri 6. Penerbangan/Aeronotika dan Astronotika 7. Teknik Pertekstilan (Tekstil) 8. Teknik Refrigerasi 9. Bioteknologi Dalam Industri 10. Teknik Nuklir (dan Atau Ilmu Nuklir Lain) 11. Teknik Fisika 12. Teknik Enerji 13. Penginderaan Jauh 14. Teknik Material (Ilmu Bahan) 15. Bidang Keteknikan Industri Lain Yang Belum Tercantum Sub Rumpun TEKNIK ELEKTRO DAN INFORMATIKA 1. Teknik Elektro 2. Teknik Tenaga Elektrik 3. Teknik Telekomunikasi 4. Teknik Elektronika 5. Teknik Kendali (Atau Instrumentasi dan Kontrol) 6. Teknik Biomedika 7. Teknik Komputer 8. Teknik Informatika 9. Ilmu Komputer 10. Sistem Informasi 11. Teknologi Informasi 12. Teknik Perangkat Lunak 13 Teknik Mekatronika 14. Bidang Teknik Elektro dan Informatika Lain Yang Belum Tercantum Sub TEKNOLOGI KEBUMIAN 1. Teknik Panas Bumi 2. Teknik Geofisika 3. Teknik Pertambangan (Rekayasa Pertambangan) 4. Teknik Perminyakan (Perminyakan) 5. Teknik Geologi 6. Teknik Geodesi 7. Teknik Geomatika 8. Bidang Teknologi Kebumian Lain Yang Belum Tercantum Sub Rumpun ILMU PERKAPALAN 1. Teknik Perkapalan 2. Teknik Permesinan Kapal 3. Teknik Sistem Perkapalan 4. Teknik Kelautan dan Ilmu Kelautan 5. Oceanograpi (Oceanologi) 6. Bidang Perkapalan Lain Yang Belum Tercantum
Articles 256 Documents
Pengaruh Variasi Massa Lilin Lebah terhadap Ketebalan Kain Blacu sebagai Alternatif Kemasan Ramah Lingkungan Zahrani Qathrunnada; Heribertus Rudi Kusumantoro; Yoga Putra Pratama
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 2 (2025): Agustus : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i2.6147

Abstract

Public awareness is needed to reduce the use of single-use plastics. One effort to reduce plastic waste is by replacing chemical-based materials with natural alternatives. This study aims to analyze the effect of beeswax thickness on the type of fabric used. A quantitative method was applied by measuring the thickness of each material sample with beeswax mass variations of 10 grams, 15 grams, and 20 grams. The results showed that blacu fabric with 15 grams of beeswax had a “very good” coating thickness. Blacu fabric with 10 grams of beeswax had a “good” thickness, while 20 grams resulted in a “fair” thickness. The thickness of the fabric material varied according to the beeswax mass and affected the coating uniformity of beeswax applied to the fabric surface.
Pengembangan Kemasan Produk Bawang Goreng Menggunakan Metode Value Engineering Farhan Iman Mudzakir; Zulkarnain; Heribertus Rudi Kusumantoro
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 2 (2025): Agustus : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i2.6150

Abstract

The growth of the snack food industry in Indonesia encourages MSME actors to innovate in improving product competitiveness, including through packaging development. UMKM Nambawang, as a producer of fried shallots, faces challenges in packaging design that lacks visual appeal and does not reflect the product’s identity, despite its superior taste quality. This study aims to design more functional, economical, and competitive fried shallot packaging by integrating the Quality Function Deployment (QFD) and Value Engineering (VE) methods. QFD is applied to translate consumer needs (voice of customer) into technical packaging attributes, while VE is used to evaluate the performance and cost-efficiency of design alternatives. The analysis results indicate that key attributes prioritized in packaging development include color aesthetics, product protection, ease of opening and resealing, clarity of product information, and storage convenience. These main attributes are translated into technical elements such as the use of standing pouches, zipper locks, full-print designs, added onion illustrations, and complete product information. The application of QFD and VE methods results in a mockup visually appealing, functional, and durable packaging design, enhancing the product’s added value based on consumer needs and increasing its competitiveness in the domestic market.
Analisis Perilaku Lentur Balok Beton Bertulang Geopolymer menggunakan Metode Elemen Hingga Sela, Reynaldo; Sumajouw, Dody M. J.; Mondoringin, Mielke R I A Josep
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 2 (2025): Agustus : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i2.6170

Abstract

This study analyzes the flexural behavior of reinforced geopolymer concrete beams through numerical simulation based on the Finite Element Method (FEM) using ANSYS software, comparing it with conventional reinforced concrete beams. The background of this research focuses on the need for environmentally friendly construction materials, considering the high CO₂ emissions from Portland cement production. The numerical model was developed based on parameters and loading schemes from previous experimental studies, utilizing SOLID65 elements for concrete, LINK180 for steel reinforcement, and SOLID185 for supports. Simulation results show that the flexural behaviour of geopolymer beams is comparable to conventional beams in terms of load-deflection relationships, flexural capacity, and crack patterns, with deviations from experimental data generally below 10%. The patterns and propagation of cracks also exhibited similarities, starting from the tensile zone at mid-span. Furthermore, the analysis demonstrates consistency with the analytical approach based on SNI 2847:2019. This research supports the validity of using geopolymer concrete as a sustainable structural material alternative and shows that the FEM numerical method is effective in evaluating the flexural performance of concrete structural elements.
Analisis Genangan Sungai Bailang Akibat Kombinasi Debit Sungai dan Pasang Surut menggunakan Program Mike 21 Moningka, Frederiko Marchiano Imanuel; Thambas, Arthur Harris; Hendratta, Liany Amelia
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 2 (2025): Agustus : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i2.6171

Abstract

The coastal area of Manado City, particularly the estuary of the Bailang River in Bunaken District, frequently experiences inundation due to the complex interaction between river discharge and tidal fluctuations. This study aims to analyze the spatial distribution and extent of flooding resulting from the combination of river discharge and tides, as well as to evaluate mitigation strategies based on numerical modeling results. A two-dimensional hydrodynamic model was developed using MIKE 21 Flow Model FM HD, utilizing topographic and bathymetric data from DEMNAS and BATNAS, along with 2023 river discharge and tidal data. Simulations were conducted for existing conditions, minimum discharge with maximum tide, and maximum discharge with maximum tide. The results show that tidal influence significantly contributes to the increase in flood extent and duration, especially when high river discharge coincides with peak tidal conditions. The most affected areas are Kelurahan Molas and Tumumpa, located along the riverbanks and near the fish auction port, with inundation covering up to 4.973 hectares and water depths exceeding 0.5 meters. Recommended mitigation strategies include river normalization and the implementation of a real-time hydrodynamic early warning system. This study supports flood risk management and coastal spatial planning, serving as a technical reference for local government policy-making.
Optimasi Heuristik Aturan Asosiasi untuk Tata Letak Produk Obat Berbasis Frequent Itemset Mining: Studi Kasus Apotek PT MPI Lina Aulia; Marzuqi Baitaurridwan; M Zaky Hadi
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 2 (2025): Agustus : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i2.6222

Abstract

This study proposes a hybrid approach combining Frequent Itemset Mining (FIM) and Algorithms and Genetic Algorithm for product layout optimization with a case study at PT. MPI Pharmacy. The FIM Algorithms is employed to extract association rules from 1,000 beauty product sales transactions, while the Genetic Algorithm is utilized to perform product placement based on these rules generated, with storage space constraints. Implementation results demonstrate that this hybrid approach successfully identifies 18 key association rules (support >15, confidence >80%) and proposes an optimal layout configuration model that reduces customer travel distance by 25 compared to conventional layouts used by MPI Pharmacy. The Genetic Algorithm solves complex rule-based optimization problems for product placement, which are limited by traditional market basket analysis (MBA) approaches that rely solely on association rules. This hybrid sistem not only improves pharmacy operational efficiency at PT MPI (reducing service time by 18) but also increases cross-selling opportunities by 22. Hence, inventory operations management impproved efficiently. The research findings contribute to the field of retail space optimization by effectively integrating association rule mining and evolutionary computation.  
Evaluasi Tingkat Cacat Produk Menggunakan Six Sigma Pendekatan DMAIC pada UMKM Konveksi X Amelia Lestari; Amay Suherman; Hanissa Okitasari
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 2 (2025): Agustus : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i2.6227

Abstract

Micro, Small, and Medium Enterprises (MSMEs) play a strategic role in Indonesia’s economy, including in the garment industry. The subject of this study is MSME X, located in Cimahi City, which specializes in the production of knitted clothing. This research aims to identify production problems, analyze the causes of defects, and design improvement strategies using the Six Sigma method with the DMAIC (Define, Measure, Analyze, Improve, Control) approach. In the Define stage, the main problems are identified through the Critical to Quality (CTQ) approach, which reveals three major types of defects: button defects (39%), stitching defects (32%), and fabric or pattern defects (29%). Next, the Measure stage is conducted to assess process performance using quality indicators. The calculation results show a Defects per Million Opportunities (DPMO) value of 10,968.95 and a Sigma Level of 3.79, indicating room for improvement. The Analyze stage utilizes Pareto and Fishbone diagrams to identify root causes. The Improve stage applies Failure Mode and Effect Analysis (FMEA) to determine improvement priorities. The Control stage involves the use of Statistical Process Control (SPC), regular inspections, and an incentive system. This approach is expected to reduce defect rates and sustainably improve production efficiency.
Optimalisasi Rute Distribusi Paket Sekunder dalam Meminimasi Jarak Tempuh : Studi Kasus pada SPP Bandung Adelia Suyatno; Ega Taqwali Berman; Saskia Kanisaa Puspanika
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 2 (2025): Agustus : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i2.6275

Abstract

SPP Bandung plays a role in managing the distribution of shipments effectively and efficiently. SPP Bandung handles two types of distribution, namely primary distribution outside the Bandung area and secondary distribution to 12 distribution centers within the Bandung area. Currently, SPP operates six fleets to serve both types of distribution. However, the current distribution system has not optimized the fleet capacity, resulting in a waste of time and resources. This study uses a quantitative approach to analyze and develop an optimal distribution route strategy. By applying the saving matrix, nearest insertion, and nearest neighbor methods, the analysis results showed a decrease in total mileage from 261.8 km to 249.6 km and fuel cost efficiency from Rp210,377.33 to Rp198,539.33. The aving matrix method proved to be effective in route optimization, but other methods can also be considered for maximum improvement.
Effect Alkali Immerse Duration and Fiber Weight Fraction of Artocarpus Elasticus Bark Fiber Composites on Impact Strength for Mudguard Material Mirza Hylmi Zhafif Lukito; Etik Puspitasari
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 2 (2025): Agustus : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i2.6287

Abstract

Composite materials are produced by combining two or more different materials, to achieve mechanical properties superior to those of the individual components. One example of a natural fiber-based composite is the composite made from the skin fiber of the lantung wood (Artocarpus elasticus). This study aims to analyze the effect of alkali immerse durations (60 minutes, 90 minutes, and 120 minutes) and fiber weight fractions (5%, 10%, and 15%) on the impact strength of the composite, using lantung wood bark fibers as the control due to their inherent mechanical strength. The experiment was conducted by varying the independent variables, such as alkali immerse duration and fiber weight fraction, and dependent variables including fiber orientation and NaOH concentration (horizontal orientation, 10%). The research method used in this research is design of experimental (DOE) method. Impact testing was performed using a Charpy impact tester, and the resulting data were analyzed quantitatively to evaluate the relationships among the variables. Although the benefits of natural fibers are well-known, there is still a lack of empirical data regarding the effects of alkali immerse duration and fiber weight fraction on the impact strength of the composites. The study purpose is to fill this gap by systematically analyzing the effects of alkali immerse duration and fiber weight fraction on the mechanical performance of lantung wood bark fiber-based composites. The research result show that a 120-minute immerse duration yields an impact value of 0.029 J/mm², while a 10% fiber weight fraction results in an impact value of 0.033 J/mm². The research contributes to the optimization of fabrication parameters, particularly in the automotive sector, such as in the production of lightweight components like rear wheel mudguard for motorcycles.
Penentuan Lokasi Pengisian Ulang Kendaraan Listrik untuk Distribusi Last Mile Menggunakan Set Covering Problem di Semarang Zelania In Haryanto; Sayyidah Maulidatul Afraah
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 3 No. 2 (2024): Oktober : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i3.6308

Abstract

The increasing use of electric vehicles in last-mile logistics distribution demands efficient and strategic charging infrastructure. This study aims to determine the optimal location for electric vehicle charging stations in Semarang City using the Set Covering Problem approach. A total of 17 last-mile distribution points operated by a logistics company were analyzed based on geographic data consisting of latitude and longitude coordinates, which were then processed into a distance matrix using the Euclidean formula. The optimization model was developed under the constraint of the electric vehicle’s maximum coverage radius and solved using binary linear programming. The analysis revealed that a single charging station located in Central Semarang is sufficient to cover all distribution points spread across the city. These findings reinforce the efficiency of the set covering approach in infrastructure planning and offer practical implications for logistics companies to optimize resources, minimize investment costs, and improve operational efficiency.
Analisis Perubahan Lahan Terbuka Tambang Pasir Golongan C di Nagari Aia Dingin, Kecamatan Lembah Gumanti, Kabupaten Solok Devindo Yudilar Fahmi; Dwi Marsiska Driptufany; Defwaldi Defwaldi; Dwi Arini; Fajrin Fajrin
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 3 (2025): Desember : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i3.6381

Abstract

Class C sand mining activities in Nagari Aia Dingin, Lembah Gumanti District, Solok Regency have been ongoing since 1999 and continue to expand to this day. This mining provides economic contributions to the local community, but on the other hand, it also has a significant impact on the environment, particularly on land cover changes. This study aims to analyze changes in open land caused by sand mining activities, using remote sensing technology as a monitoring tool. The approach used is descriptive quantitative, through the interpretation of Google Earth satellite imagery in 2015 and 2018 and Sentinel-2 imagery in 2024. Spatial analysis was conducted with the help of ArcGIS software to obtain a visual and numerical picture of land cover changes. The results of the study indicate a significant increase in the area of sand mining from 2015 to 2024. In 2015, the mining area was recorded at 8.72 hectares, and increased to 22.14 hectares in 2024. This indicates an increase in mining land area of 13.42 hectares over a nine-year period. Land use conversion has occurred on a massive scale, from dryland forest, scrubland, and dryland areas to open-pit mining areas. This land cover change has the potential to cause environmental degradation such as erosion, reduced biodiversity, and disruption to regional water systems. These findings underscore the importance of stricter monitoring and sustainable spatial planning in natural resource management. The use of remote sensing technology has proven effective in monitoring the dynamics of land use change and can serve as a basis for formulating environmental policies that are more responsive to the impacts of mining activities.