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Nurir Rohmah
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Jurnal Techno Bahari
Published by Politeknik Negeri Madura
ISSN : 24068829     EISSN : 27468399     DOI : -
Core Subject : Science, Engineering,
Electrical & Electronics Engineering Energy Mechanical Engineering Transportation
Focus and Scope This journal encompasses original research articles, including: Technology Science Machinery Engineering Mechanical Engineering Shipbuilding Engineering Electrical Engineering (Electronics)
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 127 Documents
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Kajian Transport Kontaminan Konservatif dan Non Konservatif di Air Tanah Dangkal dengan Model Analitik Dewi, Retno Syahriawati
Techno Bahari Vol 10 No 1 (2023)
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v10i1.224

Abstract

Solid waste that is not managed properly can be a threat to the environment, such as groundwater contamination caused by leachate. Leachate is the liquid released from landfill due to biological degradation and infiltration rainfall. This research purpose to determine the contaminant transport of chloride (conservative) and COD (non-conservative) contaminants from leachate and to predict groundwater quality for a period used the development of Domenico's analytical model. The samples used for this research were samples of leachate, groundwater, and soil taken around the TPA Kopiluhur, Cirebon City. The leachate quality for the chloride parameter was 52.8 mg/L and the COD parameter was 3200 mg/L. The results of two-dimensional Domenico's analytical model explained that the spread of chloride contaminants reached ± 350 meter in the transverse direction and ± 2500 meter in the longitudinal direction, while the COD contaminants reached ± 150 meter in the transverse direction and ± 150 meter in the longitudinal direction. Prediction of groundwater quality for a period time used one-dimensional of Domenico's analytical model. The result of one-dimensional simulation explained that contaminants concentration will be increases with increasing landfill age. When landfill age reaches 50 years and 80 years, chloride concentrations in five wells of resident are still on the threshold of quality standard while COD concentrations in SAT 1 and SAT 2 exceed the quality standard based on PP No 22 of 2021 for Class 1.
Analisis Pengaruh Penambahan Urea Terhadap Pelepasan Air Yang Terserap Oleh Super Absorbent Polymer (SAP) Dalam Popok Sekali Pakai Fadlilatin Nailah; Millisa, Millisa
Techno Bahari Vol 10 No 1 (2023)
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v10i1.225

Abstract

The use of disposable diapers is very high these days. The diapers consist of constituent layers, namely the upper layer, acquisition, core, and outer layer. In the core layer there is a main absorbent material called Super Absorbent Polymer (SAP). The use of SAP in the diapers is very much needed. However, currently there is no good management of diaper waste. This causes an imbalance in the environment and will eventually pollute the environment. SAP is widely used in agriculture as a keeper of soil moisture, nutrient carrier, and water storage, especially in dry areas. The use of SAP contained in disposable diapers is still very rare. SAP absorption is very strong, so that the liquid that has been absorbed is very difficult to release again. One way to release absorbed water is by adding urea to water-saturated SAP. Then an analysis was carried out using the DoE program to obtain the optimum value of water that can be released from SAP with the addition of urea. Based on the research that has been done, the optimum value of water released by SAP due to the addition of urea is 70.86 mL/75.13 gr urea. With a data validity value of 85.6%.
Rancang Bangun Robot ASR (Automated Storage And Retrieval) 3 Axis Untuk Peminjaman Instrumen Di Laboratorium Electric Drive Alhilal, Mustaqim; Hajah, M. Sohibul; Kurdianto, Akhmad Arif
Techno Bahari Vol 9 No 1 (2022)
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v9i1.155

Abstract

The development of science and technology today is growing very fast. This makes students compete to keep up with technological developments in the era of digitalization. Madura State Polytechnic through electric drive laboratory facilities requires practicum supporting equipment. In borrowing instruments for practical needs, data collection and others can be done very easily and quickly. The process of storing or retrieving instruments in the laboratory, taking instruments on a shelf still uses conventional methods. An automated system can be applied to the storage and retrieval process of laboratory instruments to make the process faster, easier, and have high accuracy. This study tries to help solve problems in the instrument storage and retrieval system which is still at the conventional stage to be developed into an online based. From the experiments that have been carried out, the ASR Robot is controlled using a Programmable Logic Controller (PLC) which functions as the main control of the automatic instrument storage and retrieval system. Proximity sensors are used to detect the position of the robot and limit the movement of the robot so that it is accurate to pick up instruments that are in stacked shelves. The ASR robot works by requiring 294.8 Watts of power.
A Rancang Bangun Neraca Penghitung Kalori Pada Buah Dengan Memanfaatkan Metode Klasifikasi K-Nearest Neighbor: Rancang Bangun Neraca Penghitung Kalori Pada Buah Dengan Memanfaatkan Metode Klasifikasi K-Nearest Neighbor Faridatus Soleha; Ahmad Mustofa; Mohamad Nur
Techno Bahari Vol 8 No 2 (2021)
Publisher : Politeknik Negeri Madura

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

Abstract

Kalori adalah jumlah energi yang didapatkan dari makanan dan minuman yang dikonsumsi oleh manusia di setiap harinya, salahsatunya adalah buah-buahan. Pada umumnya seseorang yang menjalani program diet kalori akan lebih banyak mengkonsumsibuah-buahan yang rendah kalori untuk menghindari peningkatan berat badan. Sampai saat ini pelaksana program diet masihkesulitan menghitung kalori dari buah yang dikonsumsi, sehingga dibutuhkan alat bantu untuk menghitung kalori secara mudahdan praktis. Oleh karena itu pada tugas akhir ini akan dibuat neraca kalori buah dengan memanfaatkan metode klasifikasi KNN, dimana metode ini digunakan untuk mengklasifikasikan jenis buah dengan memanfaatkan data dari sensor yangdikendalikan oleh Arduino Nano
Analisis dan Desain Analisis dan Desain Sistem Informasi Laboratorium di Lingkungan Politeknik Negeri Madura: Mengoptimalkan Efisiensi dan Akurasi Proses Pengelolaan Data A Labib Fardany Faisal; Aries Alfian Prasetyo; Ahmad Mustafa Mustofa; Ahmad Afandi
Techno Bahari Vol 10 No 1 (2023)
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v10i1.223

Abstract

An efficient and accurate laboratory information system has a very important role in supporting scientific research and development activities. In this study, the analysis and design of laboratory information systems were carried out to optimize efficiency and accuracy in data management in the laboratory environment. The approach used includes analyzing user needs, evaluating existing systems, identifying data needs, analyzing security and privacy, and designing system architecture, databases, user interfaces, and workflows. Through user needs analysis, we understood the challenges faced by the laboratory in data management and determined the functional and non-functional needs of the laboratory information system. Evaluation of the existing system helped us identify the weaknesses and strengths of the system in use, which then formed the basis for improvements and changes. Identification of data needs involves recognizing the types of data generated and managed by the laboratory, as well as the necessary integration of data between systems. Security and privacy analysis provides an understanding of the data security needs in the laboratory environment, and measures to mitigate security risks are proposed. The system architecture design includes the network infrastructure, servers, and hardware required to support the laboratory information system. Database design considers the optimal database structure for storing and managing laboratory data with attention to normalization, data integrity, and system performance. An intuitive and easy-to-use user interface is designed so that users can efficiently access and manipulate laboratory data. Workflow design ensured that the data management process in the laboratory was well organized, and points of automation and integration with other laboratory tools or systems were identified to improve efficiency. Through the development of software applications in accordance with the system design, the laboratory information system can be implemented successfully. Testing and debugging are carried out to ensure the successful implementation of the system. With good implementation, laboratories can achieve increased productivity, accuracy, and security in their data management. This research provides a comprehensive framework for the analysis and design of laboratory information systems. The results of this research can provide long-term benefits for laboratories in improving the efficiency and accuracy of data management, which in turn will support scientific progress and research in various fields of science especially in Politeknik Negeri Madura.
OPTIMASI MPPT PANEL SURYA SERIES-PARALLEL MODEL UNTUK MENGATASI PARTIAL SHADING CONDITION DENGAN METODE P&O Hajah, M.Sohibul
Techno Bahari Vol 10 No 1 (2023)
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v10i1.226

Abstract

Optimasi Maximum Power Point Tracking (MPPT) merupakan aspek penting dalam pengembangan sistem fotovoltaik (PV) untuk memaksimalkan pengambilan daya dari panel surya. Dalam penelitian ini, kami memfokuskan pada optimasi MPPT pada sistem PV yang terhubung secara series-paralel menggunakan metode Perturb and Observe (P&O). Kami mengidentifikasi bahwa sistem PV series-paralel menghadapi tantangan yang berbeda dibandingkan dengan sistem PV yang terhubung secara individu. Ketidakcocokan daya dan kondisi kerja yang berbeda di antara modul PV yang terhubung secara seri dan paralel dapat mengurangi kinerja MPPT secara keseluruhan. Oleh karena itu, kami mengusulkan strategi optimasi yang memperbaiki masalah ini. Strategi optimasi yang diusulkan menggabungkan teknik penyesuaian skala daya dan algoritma kontrol adaptif. Teknik penyesuaian skala daya digunakan untuk mengkompensasi perbedaan daya antara modul PV yang terhubung secara seri dan paralel, sehingga mencapai kesetimbangan yang optimal. Algoritma kontrol adaptif digunakan untuk mengoptimalkan langkah perturbasi agar mencapai kestabilan dan akurasi yang lebih baik dalam melacak titik daya maksimum. Kami melakukan simulasi dengan membangun model sistem PV series-paralel yang mempertimbangkan karakteristik fisik dan elektrik dari modul PV serta variasi intensitas cahaya matahari. P&O dibangun menggunakan Simulink matlab 2020b dengan boost converter. Pada penelitian ini P&O memiliki kecepatan tracking 850.2 ms dengan akurasi 99.95%. Penelitian ini memiliki implikasi penting dalam pengembangan teknologi PV yang lebih efisien dan dapat diterapkan dalam skala besar. Metode optimasi MPPT yang diusulkan dapat menjadi landasan untuk pengembangan sistem PV series-paralel yang handal dan efektif dalam memaksimalkan penyerapan daya dari panel surya. Selain itu, pendekatan ini dapat menjadi dasar untuk penelitian lanjutan dalam mengoptimalkan MPPT pada sistem PV dengan kondisi yang lebih kompleks dan dinamis.
KARAKTERIK GETARAN PONDASI MESIN INDUK OFFSHORE SUPPLY VESSEL 907 GT PADA KONDISI OPERASI Poernomo, Heroe; Husodo, Adi Wirawan; Soim, Subagio; Antoko, Bambang; Ariwiyono, Nopem; Alhakim, Rizaldi Taufik
Techno Bahari Vol 10 No 1 (2023)
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v10i1.227

Abstract

In this research, an analysis has been carried out to determine the vibration characteristics that occur on the main engine foundation of the 907 GT offshore supply ship under operating conditions. Numerical methods based on mathematical modelling of machine foundation construction are used as a reference for analysing the possibility of resonance, displacement response and velocity response. Mathematical modelling is developed by taking into account the weight and power of the main engine, the dimensions and configuration of the main engine foundation, and the damping coefficient. Mathematical modelling is realized in the form of a 2nd order differential equation (ODE). From the results of the analysis performed, it shows that resonance generally does not occur. This is because the value of the natural frequency of the main engine foundation is different from the value of the engine excitation frequency. However, more attention must be paid when the ship operates at engine speed between 1760 RPM to 1980 RPM. This is because the value of the main engine excitation frequency is close to the natural frequency of the foundation construction. The greater the rotation of the main engine, the magnitude of the displacement response is also greater. The velocity response value that occurs still meets the conditions specified by the American Bureau of Shipping (ABS). Mathematical modelling that has been prepared can describe clearly the vibration characteristics of the main engine foundation.
Rancang Bangun Kontrol Mesin Packing Rigid Box yang Dilengkapi Internet of Things Taufik, Tofikurrahman Wahed; Jaya, Arman; Kurdianto, Akhmad Arif
Techno Bahari Vol 11 No 1 (2024)
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v11i1.190

Abstract

Dalam pembuatan Rigid Box membutuhkan banyak waktu jika dibuat secara manual atau buatan tangan. Sedangkan jika menggunakan mesin maka pembuatannya akan lebih efisien. Ada beberapa mesin yang dibutuhkan dalam pembuatan Rigid Box diantarnya yaitu mesin pemotong karton, mesin pengoles lem pada karton, dan mesin packing box. Kali ini, penulis membuat mesin dibagian fisnishing yaitu mesin packing rigid box, tapi pada hal ini untuk mempermudah pemilik mengetahui jumlah rigid box yeng telah terpacking, penulis membuat mesin packing yang dilengkapi IoT. Mesin packing Rigid Box ini merupakan mesin packing yang digunakan untuk memasang karton yang sudah terpotong dan diolesi lem, dimana mesin ini akan memasang karton dengan sendirinya pada box yang telah berbentuk kotak dengan dorongan piston yang telah terpasang di mesin tersebut. Mesin packing Rigid Box sudah cukup banyak dijual dan digunakan di pasaran, namun tidak dilengkapi dengan IoT. Dari hal tersebut penulis membuat alat/atau mesin yang berjudul “Rancang Bangun Kontrol Mesin Packing Rigid Box yang Dilengkapi Internet of Things” yang dapat memonitoring mesin dari jarak jauh. Sehingga dengan adanya mesin ini pemilik/owner tinggal melihat ponsel untuk mengetahui ketersedian rigid box. “Rancang Bangun Kontrol Mesin Packing Rigid Box yang Dilengkapi Internet of Things” ini bisa mempacking rigid box dengan cepat, dengan rata-rata waktu melipat karton 1,89 detik. Dan untuk rata-rata waktu keseluran yaitu dari menaruh box sampai pengambilan hasil packing box yang telah terpacking membutuhkan waktu 45,17 detik.
ANALISIS KEBUTUHAN MATERIAL BLASTING DAN PAINTING PADA REPARASI PENGECATAN LAMBUNG KAPAL TONGKANG PSB 3005 ( IRFAN FAUZI) Fauzi, Irfan; Ardhiansyah, Fahmy
Techno Bahari Vol 11 No 1 (2024)
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v11i1.205

Abstract

Pengecatan merupakan perlindungan terhadap korosi pada lambung kapal baja. Untuk menghilangkan fouling dan korosi pada lambung kapal, diperlukan proses blasting dan painting pada saat kapal reparasi di dok kapal. Lambung kapal secara umum yang diperlukan reparasi yaitu pada bagian bawah garis air (BGA) atau underwater yang berada di bawah garis DWL, serta pada bagian atas air (AGA) atau topside yang berada di atas garis DWL. Perhitungan dan perbandingan antar kebutuhan material pada proses blasting dan painting diperlukan untuk mengetahui kebutuhan yang lebih efisien. Dilakukan melakukan estimasi kebutuhan material untuk proses blasting dan painting pada keseluruhan area lambung kapal tongkang PSB 3005. Untuk mengetahui kebutuhan material blasting, dibandingkan antara pengujian blasting dengan tekanan kompresor yang berbeda, yaitu 7 bar dan 7,5 bar menggunakan material abrasive pasir silika yang umum digunakan pada perusahaan dok kapal. Pengujian blasting tersebut dilakukan pada pelat baja dengan ukuran (300 x 300 x 10) mm, sebanyak 2 pelat. Sedangkan untuk mencari kebutuhan cat yaitu dengan membandingkan penggunaan antara 2 merek yang berbeda, yaitu Jotun dan PPG. Kebutuhan cat dibandingkan dengan perbedaan volume solid namun dengan ketebalan yang sama antara 2 merek berbeda tersebut. Ketebalan cat yang diinginkan yaitu 350 mikron untuk bagian bawah air terdiri dari 150 mikron cat primer; 75 mikron cat sealer; dan 125 mikron cat antifouling. Sedangkan untuk bagian atas air ketebalan cat 250 mikron terdiri dari 125 mikron cat primer dan 125 mikron cat akhir. Dari pembahasan ini didapatkan kebutuhan material blasting dengan material abrasive silika ysng paling efisien yaitu sebesar 92.690 kg. Sedangkan kebutuhan total cat paling efisien adalah sebesar 1999,38 liter.
Kontrol Temperatur dan Kelembapan pada Ingkubator Bayi Menggunakan Platform Antares Pratama, Kurniawan Maulana; Mahmudah, Norma; Praharsena, Bayu
Techno Bahari Vol 11 No 1 (2024)
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v11i1.255

Abstract

The condition of premature birth is a condition where a baby needs an incubator to maintain the baby's body temperature, because premature babies do not have many weaknesses to regulate body temperature so that they are prone to hypothermia. Setting the temperature and humidity in the baby incubator is an important aspect of caring for premature babies. The use of baby incubators in hospitals requires a high cost of up to Rp. 500,000 per night, even though premature babies need care in an incubator for up to one month, therefore a tool is needed to control humidity and temperature based on the Internet of Things. Control the humidity and temperature of the air used in the patient's home using a microcontroller where the microcontroller will detect the humidity and temperature inside the baby and the temperature measurement results can be viewed via the internet of things which can display temperature and humidity reading data remotely. The results of the comparison between LYNX32 and the platform between the displayed temperature and humidity values have an error of 0%. The Antares platform display displays temperature and humidity data in real time and has historical data that can be downloaded via the Antares platform, making it easier for nurses to monitor conditions.

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