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INDONESIA
Jurnal IPTEK
Published by Institut Teknologi Adhi Tama Surabaya
ISSN : 14117010     EISSN : 2477507X     DOI : -
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal IPTEK - Media Komunikasi Teknologi Diterbitkan secara berkala setahun 2 (dua) kali pada bulan Mei dan Desember oleh Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM), Institut Teknologi Adhi Tama Surabaya (ITATS). Jurnal ini memuat hal-hal yang berkaitan dengan bidang Teknik Sipil, Teknik Mesin, Teknik Elektro, Teknik Arsitektur, Teknik Perkapalan, Teknik Informatika, Teknik Industri, Teknik Kimia, Teknik Lingkungan, Teknik Pertambangan, Teknik Geologi, Desain Produk, Sistem Informasi, dan Sistem Komputer baik yang ditulis dalam bahasa Indonesia maupun bahasa Inggris (diutamakan).
Arjuna Subject : -
Articles 378 Documents
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The Mechanical Properties and Microstructure Analysis of Carbon Structural Steel After Quenching in Circulated Water Medium Rosidah, Afira Ainur; Setyowati, Vuri Ayu; Suheni, Suheni; Febrianto, Muhamad
Jurnal IPTEK Vol 26, No 1 (2022)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2022.v26i1.1139

Abstract

The use of carbon structural steel in construction is widely developed. It is important to do research continuously in order to get the optimum mechanical and physical properties of a material. Heat treatment which includes heating and quenching is a process that can be carried out to improve mechanical properties. A fast cooling rate is used to obtain higher strength and hardness. This research studied the effect of quenching using circulated water medium with water flow rate variations in structural steel Q235, Q255, and Q275 to their mechanical properties and microstructure. The heat treatment process was done with hardening at 1150oC, roll milling at austenitizing temperature, then quenching using circulated water medium with water flow rate of 225, 238, 247 m3/h. The tensile and hardness test results showed that water flow rate and carbon content in steel give an effect on strength and hardness. The highest tensile strength and hardness value were achieved by Q275 steel with a flow rate of 247 m3/h, which are 73,49 kgf/mm2 and 298 HVN, respectively. Meanwhile, the microstructures resulted in the presence of the mixture of martensite and pearlite, as well as ferrite in every sample with the increase in the composition of martensite and pearlite in Q275 steel with a flow rate of 247 m3/h.
DESIGN OF CIRCULATION HOSPITAL SERVICE IN THE NEW NORMAL ERA Salisnanda, Randy Pratama
Jurnal IPTEK Vol 27, No 1 (2023)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2023.v27i1.3725

Abstract

Health care buildings are experiencing extreme challenges due to the COVID-19 pandemic worldwide, the high global death rate due to the pandemic has forced hospitals to make changes and improve health service strategies to minimize the impact of transmission and hospital readiness in dealing with other infectious diseases. The design of this service circulation design is expected to be able to improve the quality of service to the community and users related to the ideal, thorough, thorough, fast, precise and correct service excellence principles. Using analytical methods, data sources were obtained through studies on hospital building planning with a separate circulation system, government regulations related to infectious diseases, and the shortcomings of the previous hospital building circulation system, the conclusion resulted in a building circulation design planning that has 3 zoning (red, yellow, red zones). and green) by providing differentiation in circulation related to the function of each room, the classification of visitors and the flow of patients in and out, to improve hospital services and safety against unpredictable conditions in the future such as the current pandemic era.
Phytoremediation of Leachate Processing at Griya Mulya Landfill, Sidoarjo, Indonesia with Continuous System Hamidah, Laily Noer; Widiyanti, Atik
Jurnal IPTEK Vol 25, No 2 (2021)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i2.1809

Abstract

Waste is a global problem that is very hard to solve. Waste generation produces leachate that is harmful to the environment. Leachate can seep into the soil causing direct soil and groundwater pollution. Phytoremediation is an effort to use certain plants and their parts to reduce chemical substances in waste and environmental pollution problems. In this study, the plants used were Typha latifolia by varying the number of plants: without plants, four, and five plants. The leachate used comes from the Griyo Mulya landfill, Sidoarjo. The reactor used was 30´30´50 cm and the discharge used was 15 L/day. The reactor used is a continuous system. The parameters analyzed included TDS and NH3. The results showed that the most significant decrease in TDS and NH3 levels was obtained from the reactor of four and five plants with 700 mg/L of TDS and 10.65 mg/L of NH3.
Re-design of Local Residence (Homestay) in Labuan Bajo as Tourism Area (NTT) based on Adjustment Characteristic of tourist to Manggarai Traditional Building Laksono, Sigit Hadi
Jurnal IPTEK Vol 26, No 2 (2022)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2022.v26i2.3014

Abstract

Labuan bajo has several famous tourist such as: Komodo National Park, Lake Kelimutu, Batu Cermin, Kampung Bena, Seventeen Marine Park, Riung Island and Wae Rebo. With the increasing tourist sector in Labuan Bajo, more tourists come. With the increasing number of tourists, accommodation is also increasing and competing. The problem that becomes an issue here first is the existence of homestay residents who are less competitive with existing hotels and cottages. The second is the lack of character of traditional buildings displayed in homestay buildings, hotels, and cottages that already exist. So, this research aims to optimize homestays design to compete with other accommodation facilities. Based on the above problem issues, to solve the problem by analyzing, comparing, and evaluating the sample of tourist residences operating.  The design method used is the Cyclical design Process method in order to get optimal design alternatives. The final result obtained is in the form of a draft proposal that includes the arrangement of the floor plan and the proposal of the appearance of the design that has been adapted to the traditional building character and the needs of tourists.
Implementation of Contemporary Architecture in the Shape of the Main Building in the Central Area of the Creative Arts and Music Industry in Surabaya Wibowo, Stevanus Agustian; Ratniarsih, Ika; Hendra, Failasuf Herman
Jurnal IPTEK Vol 29, No 1 (2025)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2025.v29i1.6660

Abstract

The main building of the Creative Arts Music Industry Center in Surabaya has a function to facilitate the growth and development of the creative arts music industry in Surabaya. Among them are Pop, Rock, Dangdut, Jazz, Classical, and Traditional Music. The facilities in this building include indoor music performances, a music library, music education, music production, music recording, and a music collaborator. The main building is designed with the application of a contemporary architectural theme. Contemporary architecture is architecture that has the freedom to express itself and has the desire to create a new and different work from previously existing architectural works. So that it can produce an appearance that is beyond the ordinary; their appearance gives an attractive, exploratory and complex impression. In its application, the form of this main building adopts a form that is quite closely related to the art of music, namely the form of a grand piano musical instrument. With this building form, it is expected to bring up a concept of contemporary architecture through a new form that has never existed before and is able to express the activities carried out in the main building.
Spatial Distribution of Chromium Metal in Water and Sediment in the Berbek Industrial Area, Sidoarjo Regency Fitrianah, Listin; Purnama, Agus Rachmad
Jurnal IPTEK Vol 26, No 1 (2022)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2022.v26i1.2966

Abstract

Berbek Industrial Estate is the largest industrial area in Sidoarjo Regency. The most dominant concentration of heavy metals in industrial areas is chromium in water and sediments in rivers which have the potential to have a negative impact on humans, this is because rivers are a place for developing aquatic organisms including fish that are consumed by local residents. Parameters include chromium content in river water and sediment. Spatial distribution analysis uses the kriging method on laboratory results and overlay to describe the distribution map. The result of the highest content in water parameters is the location of Gedongan Village at 0.31 ppm. Based on Peraturan Pemerntah Republik Indonesia Nomor 82 Tahun 2001 on Water Management and Pollution Control, states that the environmental quality standard for chromium in class III rivers is 0.05 mg/L. The highest content in sediment is the Berbek location at 3.24 ppm.
Greenhouse Gas Reduction Potential based on Waste Recovery Factor in Gading and Dukuh Setro Subdistrics, Surabaya Pramestyawati, Talent Nia; Afrianisa, Rodu Dhuha; Ath Thoyib, Muhammad Hafizhni
Jurnal IPTEK Vol 27, No 1 (2023)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2023.v27i1.4498

Abstract

People’s growth and their activities increase waste generation. Therefore, efforts to reduce waste are needed, including community-based reduction efforts. This research is located in Gading and Dukuh Setro sub-districts in Surabaya City. The purpose of this study was to measure the potential for waste reduction and greenhouse gas reduction. Measurement of waste generation, waste composition, and waste density was based on SNI 19-3964-1994. The researcher conducted sampling in low, middle, and high-income areas, covering 83 families. Greenhouse gas emissions were estimated using the LandGEM (U.S. EPA) method based on the waste disposed at landfill, considering the existing reduction conditions and optimal material recovery. Solid waste generation in 2022 per year was 4.695,58 tons. The largest composition of waste consisted of biodegradable waste (37.13%), plastic waste (25.73%), and diapers and sanitary napkins (18.25%). The average density of loose waste was 152.42 kg/m3. The existing reduction had 1.47% waste bank reduction activity and 0.72% composting reduction activity, for a total reduction of 2.19%. The average optimal reduction was 52.7%, whereas the optimal reduction in the waste bank was 17.5%. The optimal composting reduction was 35.2%. Thus, the existing scenario in 2032 obtained reductions from total landfill gas of 725,498 Gg/year, methane of 193,788 Gg/year, carbon dioxide of 531,710 Gg/year, and NMOC of 8,330 Gg/year. Meanwhile, the optimal scenario for 2032 obtained reductions from total landfill gas of 239.067 Gg/year, methane of 63.857 Gg/year, carbon dioxide of 175.209 Gg/year, and NMOC of 0.412 Gg/year
Optimization of Mechanical Performance Polymer Insulators SiR Using CFA Waste as Filler Fikri, Miftahul; K, Iwa Garniwa Mulyana; Christiono, Christiono; Thahara, Andi Amar
Jurnal IPTEK Vol 29, No 1 (2025)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2025.v29i1.4923

Abstract

This study investigates the use of coal fly ash as a filler in Room Temperature Vulcanization (RTV) silicone rubber to enhance its mechanical properties. Fly ash, which contains silica, has the potential to improve the strength of the polymer. The research aims to optimize the composition of fly ash in RTV silicone rubber composites using the quadratic regression method, focusing on tensile strength and elongation performance. Tests were conducted according to ASTM D 412 standards for tensile strength and elongation. The results showed that the optimal fly ash composition for tensile strength was 38.11%, resulting in a tensile strength of 0.19 and a Mean Absolute Percentage Error (MAPE) of 13.64%. For elongation, the optimal composition was 14.95%, with an elongation value of 192.094 and a MAPE of 24.75%. This study provides valuable insights into how fly ash can be used to enhance the mechanical properties of RTV silicone rubber composites.
Automated Pneumatic System for Car Brake Pedal Test Rospawan, Ali; Simatupang, Joni Welman
Jurnal IPTEK Vol 25, No 2 (2021)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i2.2349

Abstract

In the automotive industry especially in the car production company, after filling the brake fluid oil, the brake fluid should be distributed from the brake fluid oil reservoir tank to all the braking system components. Unfortunately, the oil is not well distributed even an air trapped inside. To prevent the new car brake problem, to replace the human pressing the brake pedal manually, to reduce the manpower effort, and to detect the problem as soon as possible after filling the brake fluid oil this automated pneumatic system for car brake pedal test device is created. This research was done by designing, simulating, create the actual device that is ready to use and implemented in the industry. The result is this system is working well after being successfully implemented. There are several achievements during its operation, especially manpower effort reduction. More safety for the manpower compared to pressing the pedal manually. Safety from electric shock because the system is designed using a full pneumatic system without electricity. Poka-yoke for brake oil leakage, for faster analysis and part replacement, and in the end, it also impacts on the increasing profitability.
Development of Renewable Photobioreactor (FBR) Technology with Fluid Hydrodynamics System-Online Monitoring Microcontroller as SNI Standardized Pure Oxygen Producer Hadiningrat, Mahendra Satria; Sari, Mayang; Sunardi, Ninik Nigusti Ayu
Jurnal IPTEK Vol 26, No 2 (2022)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2022.v26i2.3373

Abstract

This photobioreactor research was carried out using Chlorella vulgaris algae as an O2-producing reactor and optimizing light energy as its energy source, with dimensions of 40x50x60 cm with control of pH, temperature, and chemical visibility factors. Variations are given by providing a supply of CO2 in both types of photobioreactors. Then it can be seen the concentration of O2 produced from the photobioreactor and its ability to overcome CO2 gas emissions. The use of glass as a reactor-making material is because glass is able to absorb visible light wavelengths in the range of 400–750 nm where at that wavelength microalgae can live and reproduce well. Before selecting the lamp used for the photobioreactor system. Measurements were carried out on two photobioreactors, namely, photobioreactors supplied and not supplied with CO2, and using three types of light sources, namely halogen lamps, LEDs, and sunlight. The maximum oxygen concentration value was produced by the photobioreactor supplied with CO2. The average percent error of the designed tool is 1.383% which is obtained by comparing the value of the designed tool with the reference measuring instrument.

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