romadhoni
@polbeng.ac.id
Politeknik Negeri Bengkalis
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Romadhoni, Budhi Santoso, and Polaris Nasution
IOP Publishing
Fiberglass composite material is currently widely used as an alternative material or substitute material for metal and wood materials for the manufacture of fishing boats, because it has its own advantages, among others, easily formed in accordance with needs, has good strength and stiffness. However, in the operation of the ship the bow section often experiences a collision or collision so that when the ship is operating and leaning on the dock which causes a collision where the kinetic energy of the boat turns into a collision energy absorbed by the boat’s hull that is hit by a collision. The energy damaged the hull of the boat that was hit, so the front of the ship needs to be done by adding a new material that is a composite sandwich made with the aim of optimal weight efficiency, but has high rigidity and strength. There are many variations in the definition of sandwich composites, but the main factor of the material is the lightweight core, thus reducing the specific gravity of the material and the strength of the skin layer which gives strength to the sandwich composite. This research was carried out a static structural analysis of composite sandwich material using Ansys Workbench 14.5 software. A model is designed and analyzed using 3D CAD software, which is fore ships that have the potential to experience collisions. From the simulation results of the Fenite element method, the maximum principal stress of the model shows that the maximum point is 11.6 MPa. The maximum stress occurs at the ivory bottom, which is 6.9759 kN/m2 or 6.97 kPa, this occurs due to the bow of the fishing boat experienced a great imposition.
A. Zulfaidah, Sarwoko, Suharto, Budhi Santoso, and Romadhoni
IOP Publishing
A Afriantoni, R Romadhoni, and B Santoso
IOP Publishing
N Nurhasanah, B. Santoso, R. Romadhoni, and P. Nasutioni
IOP Publishing
Romadhoni, Budhi Santoso, and Afriantoni
IEEE
This research is to analyze the resistance and stability of double step hull with fast craft. Fast boats have a design to reach the desired speed. In the manufacture of a ship, the manufacturers always pay attention to the economic and technological side, which is in addition to the planned design parameters, as well as economic considerations. Based on the above thoughts, the research tested the effectiveness of using the Step Hull on a 14 m patrol vessel, which has result in ship resistance, this proven when the speed is 28 knot the variation of model C has 16.5 kN resistance, model A has 18.6 kN, and model A has 18.2 kN. Then, the biggest power of each, model original are 468,725 HP for model B are 431,561, and for model C 424,916 HP. Result Analyze the stability and operability of the ship while operating stability ship was evaluated by HSC 2000 Annex 8 Monohull and International Maritime Organization (IMO) criteria. Based on that analysis, it was concluded that Model B has the best maximum GZ= 0.947m 53.6 deg than other models
Dzata Farahiyah, Rifky Mukti Romadhoni, and Setyawan Wahyu Pratomo
ACM Press
Indoor localization becomes more popular along with the rapid growth of technology dan information system. The research has been conducted in many areas, especially in algorithm. Based on the need for knowledge of training data, Fingerprinting algorithm is categorized as the one that works with it. Training data is then computed with the machine learning approach, Naïve Bayes. Naïve Bayes is a simple and efficient classifier to estimate location. This study conducted an experiment with Naïve Bayes in order to classify unknown location of object based on the signal strength of Bluetooth low energy. It required 2 processes, collecting training data and evaluating test data. The result of the analysis with Naïve Bayes showed that the algorithm works well to estimate the right position of an object regarding its class.