Natriya Faisal Rachman
@poltekpel-sby.ac.id
Nautical
Politeknik Pelayaran Surabaya
RESEARCH, TEACHING, or OTHER INTERESTS
Multidisciplinary, Engineering, Language and Linguistics
Scopus Publications
Scopus Publications
Willy Artha Wirawan, Hari Boedi Wahjono, Fadli Rozaq Natriya Faisal Rachman, and Aslam Rhamadhani
AIP Publishing
P. Kurniasih, W.A. Wirawan, A. Narto, O.S. Pribadi, N.A. Imron, N.F. Rachman, and A. Pradipta
Index Copernicus
Fibre Reinforced Polymer Composites have been extensively developed to construct fishing vessels. This study reports on the successful development of the Agel Leaf Fibre (ALF)-Epoxy composite reinforced with carbon powder and fabricated using the Vacuum Infusion method.The composites were prepared by varying the carbon powder filler content at volumes of 0%, 10%, and 30%. The fire resistance of the composites was investigated using a burning test according to ASTM D-3014 standards. The morphology of the composites was observed through SEM analysis and analysed using ImageJ software.The research findings reveal that adding 30% carbon powder in the HCP composite reduced the burning rate by 42.624 mm/sec and the time to ignition by 17.33 seconds, indicating improved fire resistance properties. The carbon powder inhibited flame propagation and reduced the combustion rate by 0.49%. The SEM examination confirmed that the fibre porosity decreased, resulting in a denser composite with enhanced fibre-matrix adhesion. Therefore, the implementation of fire-resistant composite materials in fishing vessel construction can be realised.The present study primarily examined the immediate effects of carbon powder additions on the morphology of the composites. However, it is crucial to consider these composites’ long-term stability and durability. Future research should investigate the ageing behaviour, considering environmental factors such as humidity, temperature, and UV radiation, to assess their impact on the morphology and flammability resistance of the composites. Additionally, it is essential to acknowledge that other factors, including fibre orientation, fibre length, and matrix properties, can significantly influence the overall performance of the composites.The enhanced flammability resistance of Agel Leaf Fibre-Epoxy composites with carbon powder additions holds significant benefits for fishing boat applications. In marine environments, the risk of fire incidents on fishing boats is high, making materials with good fire resistance highly desirable. Therefore, implementing fire-resistant composite materials in fishing boat construction can be realised to reduce the risk of fire incidents in high-seas fishing vessels.Composites with added carbon powder exhibited smaller flames, slower burning rates, and a lack of significant flame propagation. This suggests that adding carbon powder acts as an oxygen barrier and reduces the availability of fuel within the composite.
Willy Artha Wirawan, Akbar Zulkarnain, Fadli Rozaq, Dadang Sanjaya Atmaja, Natriya Faisal Rachman, Sunardi, and Muhammad Daffa Ibrahim
AIP Publishing
Natriya Faisal Rachman, Sunardi, Adya Aghastya, Willy Artha Wirawan, and Nanda Dwi Oktavrina Putri
AIP Publishing
Adya Aghastya, Hari Boedi Wahjono, Willy Artha Wirawan, Dadang Sanjaya Atmaja, Natriya Faisal Rachman, and Wahyu Tamtomo Adi
AIP Publishing
Adya Aghastya, Rusman Prihatanto, Natriya Faisal Rachman, Wahyu Tamtomo Adi, Septiana Widi Astuti, and Willy Artha Wirawan
AIP Publishing
Natriya Faisal Rachman, Willy Artha Wirawan, Andri Pradipta, and Didik Agus Setiawan
IOP Publishing
Abstract Maglev trains have a working system that will later be used to move the train. Magnetic Levitation (maglev) working system uses the principle of attractive or repulsive force generated by magnets. In its development, there are several systems used on maglev trains. This article describes how to design the strength of the magnetic field in the maglev prototype. Tests using a magnet based on the distance and diameter of the magnet. The results of measuring the magnetic field on a permanent magnet by varying the space to determine the position of the largest magnetic field, where the largest magnetic field is found in 2 magnetic pieces with a diameter of 15 mm with a value of 50.7 gauss. In the coil magnet, manual calculations are carried out, to produce a magnetic field equal to 2 pieces of 15 mm diameter magnet requires a current of 10 amperes
D.T. Istiantara, I. Mafudi, J. Handhika, F. Huriawati, S.W. Astutik, and N.F. Rachman
IOP Publishing
Abstract The study is conducted in order to identify the influence of microcontroller-based straight motion practicum media on the students’ scientific processing skills. The study is a quasi-experimental research using non-equivalent control group. Then, when the study was conducted the population that had been involved was 24 students of Grade KR 1 Negeri 1 State Vocational High School Wonoasri as the control group and 30 students of Grade X IL 1 Negeri 1 State Vocational High School Wonoasri and 27 students of Grade X TPMI GulaRajawali Vocational High School Madiun as the experimental groups. The data gathering technique that had been implemented was written test on scientific processing skills with the following indicators: observing, hypothesizing, experiment designing, concluding and communicating. The results of the study show that in the control group the N-gain was 0.3 with “Moderate” category. On the contrary, in the experimental groups the implementation of microcontroller-based straight motion practicum media has influenced the improvement of the students’ scientific processing skills; for the experimental groups, the N-gain is 0.6 with “Moderate” category.
N F Rachman, F S Hidayat, J Handhika, Jamaludin, and Wahyu Tamtomo Adi
IOP Publishing
Abstract The purpose of this study was to determine the effect of application circular motion practicum media using microcontrollers-based toward the learning outcomes of students. The object of this research is the students of State Vocational High School and Private Vocational High Schools in Madiun. The research design was Nonequivalent control group pretest-posttest. Data collection technique used 5 questions of cognitive essays tests. Data analyzed using qualitative descriptive techniques. The findings found out that the application of circular motion learning media using microcontroller has a significant influence on improving the students’ cognitive learning outcomes.