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JOURNAL OF SCIENCE AND APPLIED ENGINEERING
Published by Universitas Widyagama
ISSN : 26213753     EISSN : 26213745     DOI : -
Core Subject : Science, Education, Social, Engineering,
Aerospace Engineering Computer Science & IT Electrical & Electronics Engineering Engineering Social Sciences Other
ournal of Science and Applied Engineering (JSAE) is an open access peer-review journal, and is aimed to disseminate original research in all fields of Electrical Engineering, Mechanical Engineering, Civil Engineering, Industrial Engineering and Informatics Engineering and presents the latest development and achievements in scientific research in Indonesia and overseas to the world’s community. Only original, innovative and novel papers will be considered for publication in the JSAE. The authors are required to confirm that their paper has not been submitted to any other journal in English or any other language. The JSAE welcome contributions from all who wishes to report on new developments and latest findings in science and applied engineering.
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Articles 5 Documents
 1 
Search results for , issue "Vol 2, No 1 (2019): JSAE" : 5 Documents clear
Investigation of Fin Spacing for Heat Transfer Enhancement in Cross Flow Over Tubes Between Two Parallel Plates Ahmad Nurye Oumer; Amer Farhan Alias
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 2, No 1 (2019): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (832.6 KB) | DOI: 10.31328/jsae.v2i1.875

Abstract

This research explains the investigation of fin spacing for heat transfer enhancement in the finned tube heat exchanger. The objective of this paper is to recommend the optimum fin spacing for heat transfer enhancement. Three different types of tube and spacing are identified through the simulation from Ansys software. The data between simulation using Ansys Fluent and published literature were being compared. Graph of total pressure, Nusselt number and total temperature have been plotted to make the comparison. Result obtained showed that were a bigger agreement between the simulation and published literature for both types of the tube which are circular and elliptic. From the analysis, there were considered two types of arrangement for the different types of tube. From that, the aligned arrangement is the best for heat transfer enhancement compared to the staggered. For the effect of spacing, there was three spacing which is 1.7 mm, 1.8 mm, and 2.0 mm spacing with velocity and the total heat flux is set to be constant (v =1.4 m/s; q = 500 W/m2). For the circular tube, it can be seen that the wider of the fin spacing gave the best heat transfer enhancement in the heat exchanger. Different from the circular which is 1.8 mm spacing is the best for heat transfer enhancement. Other types of tube are a flat surface which is comparing with the variations of Nu vs Re with different heat flux. Then, the result showed that as the Re is increased the Nu will also increase. In the other side, it is recommended for future work to do the real model dimension followed to import to the Ansys instead of assuming the model is symmetrical.
Monitoring of Engine Lubrication using Acoustic Emission Technology Mohd. Fadhlan Mohd. Yusof; Azman Solahuddin
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 2, No 1 (2019): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (625.629 KB) | DOI: 10.31328/jsae.v2i1.877

Abstract

This research presents the application of Acoustic Emission (AE) sensor to explore the feasibility of an AE signal in the process of monitoring the engine oil viscosity on different condition of mileage during the engine operation. The viscosity experiment was performed in a prior stage of the experiment using four samples of SAE 5W-30 engine oil with the different condition of mileage. On the next occasion, the AE signal was acquired on three cylinders of a four-stroke gasoline engine with a cooling water system which operates using the previous lubricant sample. In this experiment, the AE sensor was bonded on the outside of the engine block and located at the oil filter and oil sump location. It was found that the AE energy value is capable of determining the variant of the engine oil viscosity. The results from this project show that via AE technology proved to be feasible for the development of a real-time lubricant condition monitoring which was believed to be a new technology in the automotive industry.
Spot Speed versus Speed Limit on Malaysian East-Coast Expressway Sulistyo Arintono
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 2, No 1 (2019): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (226.375 KB) | DOI: 10.31328/jsae.v2i1.910

Abstract

Speed is one of the important causal factors for accidents on the road. This study aims to investigate the effectiveness of the speed warning sign on Malaysia’s East Coast Expressway where the rate of accident is high. Two points were selected, one representing locations far from any speed related warning sign, and one location immediately after a speed warning sign is in sight, to assess significance of the differences of the spot speeds. Results of the analysis suggest that the majority of vehicles (63.24%) travel over the speed limit, and that the speed warning sign does function in reducing the mean spot speed. However, the speed reduction is not to the desired level, i.e. under the speed limit. Other strategies have to be introduced to achieve the target.
Leakage Detection in Pipeline using Wavelet Transform Method Mohd Fairusham Ghazali; Abdul Kadir Samta
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 2, No 1 (2019): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (590.368 KB) | DOI: 10.31328/jsae.v2i1.941

Abstract

This research project is focusing on the leakage detection in the pipelines using wavelet and cepstrum analysis. To fully complete this research project, experimental and analysis by using signal processing are required. This research project proposed a technique which is a transient method. The basic principle is the fact that water spouting out of a leak in a pressurized pipe generates a signal, and this signal contains information to whether a leak exists and where it is located. The present transient methods for finding leaks are mainly based upon correlation analysis, where one sensing device is installed at each side of a leak. This method is hard to operate because it needs many operators to operate it due to equipment in different place. This research project proposed a wavelet transform method to detect leakage in the pipeline system. The experimental results show appears  to improve the ability of the method to identify features in the signal.
Analysis of a Sedan Car Seat Vibration Muhamad Rusydi Roslan; Gigih Priyandoko
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 2, No 1 (2019): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (625.795 KB) | DOI: 10.31328/jsae.v2i1.938

Abstract

Ride comfort in vehicle transportation is quite complex, and it depends on various dynamic performance criteria and subjective perception from the car passengers. Vibration discomfort from various factors such as vehicle conditions, the speed of the vehicle, road surface condition, vehicle load, and operating condition can lead to poor ride comfort. Driver seat will be the main part of a car that needed to get a dynamic comfort. Comfort and safety are major factors that need to be considered. To ensure the safety for passenger, the driver must feel comfortable while driving. The objective of this project is to analyze the vibration at the seat of a Proton Wira at different speeds, different loads and different road surfaces. In this project, use six different speeds. Vibration data from two types of road and three different loads are collected using two accelerometers sensor that place on driver seat and seat frame. The rough surface will cause a car to generate more vibration. The results for frequency and time responses show that the vibration increases at the dirt road.

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