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JOURNAL OF SCIENCE AND APPLIED ENGINEERING

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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 worldâ€™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 81 Documents

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Leakage Detection In Pipeline Using Wavelength M.F Ghazali Ghazali; A K Samta
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 2, No 2 (2019): JSAE
Publisher : Widyagama University of Malang

Nowadays natural gas transport and distribution is a complex and currently growing and increasing. Natural gas produced from well need to transport in a great distance before reaching it point of use. The pipeline is designed to quickly and efficiently transport the gas from its origin to the high demand area. Either pipelines transportation for water supply or natural gas, leakage is unacceptable problem. Small leak along the pipeline is hard to detect. The objective of this study is to build the test rig galvanized iron and MDPE pipelines. Besides that, the main objective is to determine the leak detection in gas pipeline using wavelet-based filtering. . Main point of each journal is compared in order to determine the problems arise from the previous research. It is then follow by the methodology which will discuss further in this chapter. From methodology, it is known that the data taken can be analysing through Daisy Lab and Math lab software Wavelet and cross correlation is used to analyse the signal in Matlab. From the result, it show that the leak can be identified based on the peak of amplitude of the signal. The result for galvanized iron pipe is not acceptable due to short pipeline length. Thus it can be concluded that leak can be determined using wavelet-based filtering. As the conclusions, the propose technique can be used to determine the leak in pipelines

Effect of Temperature, Time and Amount of Alkaline Treated Cotton Seaweed (ATS) Products Dried in a Dryer Oven on Product Quality Mochammad Masud; Mohammad Effendi; Miftachul Huda
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 2, No 2 (2019): JSAE
Publisher : Widyagama University of Malang

Eucheuma cottonii seaweed contains carrageenan, which is used as an ingredient for the food and beverage industry. This must be processed first by an alkaline process and then dried to become chips known as alkaline treated cotton chips (ATC) products. The process of drying seaweed was done using an oven dryer using heat energy that can be adjusted to the drying time, temperature and number of products so that the quality of the dried products of seaweed products that have been processed into Alkaline Treated Cotton Seaweed (ATS) to be used as an advanced product becomes ATC (Alkali Treated Cotton Chips). The results of this study aim to find out the optimal value of temperature, drying time and the amount of ATS to get output from ATC in accordance with SNI 8170: 2015 standard and received by the customer. Based on the results of the study, it was found that the minimum significant drying process for moisture content was 12.10% at level 2, 1 kg weight, level 2 temperature 70 oC with level 3 drying time 400 minutes. Whereas the maximum gel strength is 910 gram / cm2 at level 1, weight 0.5 kg, level 2 temperature 70 oC with level 2 drying time 320 minutes.

Caffeine as A Natural Corrosion Inhibitor for Mild Steel in Nacl Solution L.P. Xuan; M.A. Anwar; T. Kurniawan; H. M. Ayu; R. Daud; Y. P. Asmara
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 2, No 2 (2019): JSAE
Publisher : Widyagama University of Malang

Corrosion inhibitors are substances that added to the environment in small concentration and can effectively reduce the corrosion rate that of a metal surface. Natural inhibitors are one types of inhibitor being researched as it brings less environmental impact on the environment. This research was focused on the application of caffeine as inhibitor for corrosion of mild steel in seawater condition. The objective of this project was to develop the relationship between caffeine concentration on the corrosion of mild carbon steel in both static and moving solution contained 3.5-wt% NaCl. Three types of solution were prepared, which are NaCl without addition of caffeine, NaCl with 1-wt% of caffeine and NaCl with 2-wt% of caffeine. Corrosion testing was carried out by weight loss measurement. The microstructures of corroded mild steel specimens were observed under optical microscope. The experimental results indicated that by adding caffeine into the environment medium, weight loss of mild steel specimen was reduced. The corrosion rate of specimens was decreased when more caffeine was added to the environment. From optical microscopic observation, caffeine performed its inhibition effect likely by forming a protective layer which acts as barrier to prevent further corrosion of mild steel in NaCl solution.

Design of Low Flow Undershot Type Water Turbine E. Y. Setyawan; S. Djiwo; D. H. Praswanto; P Suwandono; P. Siagian
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 2, No 2 (2019): JSAE
Publisher : Widyagama University of Malang

Many water sources around us which have kinetic energy to run waterwheels are not optimally utilized. This energy can be converted into an energy source that can produce electricity. Therefore this study produced a design of a waterwheel that could be used in low-flow rivers to produce electricity by adding generators. Waterwheel modeling using Ansys is calculated based on flow assumptions. Modeling using this system provides advantages in the form of computational power efficiency, the stability of numerical calculations and the accuracy of the resulting solutions. Numerical analysis of the waterwheel is assumed that the waterwheel is half floating on the surface of the water. As stated in the limitation of the problem that the incoming water flowing at a speed of 5 m/s from the flow moves the wheel. The flow rate of water that hit the blade on the waterwheel causes the waterwheel to rotate which is pressured by the flow of water with a number of 12 blades. With a relatively simple design, the waterwheel produces a wheel rotation I of 91 Rpm and II of 78 Rpm, with a torque of 39.2 N by using some analysis of this design can be applied to river flow with low flow velocity. The relatively simple design makes it easy to be produced and maintenance. River flow used is in the Malang District with a flow velocity of 1 m/s gets a power of 1128 W on waterwheel I while on waterwheel II gets a power of 967 W.

Design Lighting Quality Based on DIALux Evo 8.1 R. Febriyursandi; A.Z. Azriyenni; A. Hamzah
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 2, No 2 (2019): JSAE
Publisher : Widyagama University of Malang

This research develops and implements methods for calculating lighting systems for classrooms in the Khairul Ummah Boarding School. The lumen is used to determine the number of luminaires needed to improve lighting quality following SNI 6197:2011. The number of luminaires obtained from this study was entered into the DIALux Evo 8.1 software. The results obtained of this study indicate that the lighting in the classroom at Khairul Ummah Boarding School didn’t reach the recommended standard, the direct measurement results of the average lighting level of class A was 10.79 lux, while the class X-IPA-3 was 11.66 lux. To improve this condition, class A requires 15 luminaires, and X-IPA-3 requires 12 luminaires. The difference in the results obtained from the two calculations for class A is 0.6%, and X-IPA-3 is 3.4%. Investment costs are needed to improve the lighting system in these classes worth Rp.2,700,000.00 to provide 27 lamps.

Do We Need Taxi Counter at Major Transportation Hubs Sulistyo Arintono
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 3, No 1 (2020): JSAE
Publisher : Widyagama University of Malang

Taxi service at major international airport is usually an exclusive service where only those registered with the airport authority can serve passengers. Intending passengers need to register and pay a fixed fare at the taxi counter before using the service. Many customers complain that the fixed fare is significantly higher than if it was based on meter. This paper discusses the benefits or disbenefits of having taxi counter at major transportation hubs, trying to find the best solution for the benefit of all concerned parties: taxi drivers, customers and the authority. Data for analysis was obtained from observations at a number of airports and rail stations in Indonesia and Malysia. Result of the analysis suggests that it is ideal to have taxi counter, but use of the service should be made possible without having the customers to visit the counter.

Valuation of Reliability Index in Distribution Network 13.8 kV F. Yaser; Azriyenni Azhari Zakri; D. Y. Sukma
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 3, No 1 (2020): JSAE
Publisher : Widyagama University of Malang

This study is proposed to calculate and analyze the level of reliability of the 13.8 kV distribution system. To calculate the reliability index based on the reliability index of the value of the failure that occurred. The method used throughout this study is the Reliability Index Assessment (RIA) when this method takes into account momentary interruption. The distribution network is considered as the object of this study has six feeders. Based on blackout data obtained, the reliability index becomes smaller and can be distinguished between permanent and temporary disruptions. The calculation results show the reliability index of SAIDI, SAIDI, and MAIFI based on the type of disturbance; the results of this calculation will be compared with SPLN and IEEE. A comparison of the results of the calculation of SAIFI values from the six feeders analyzed all meet the SPLN and IEEE rules. However, in one of the feeders, the SAIDI index exceeds the established standard, which is 24 hours/year/customer, with the SPLN regulation being 21 hours/year/customer, and the IEEE standard is 2.3 hours/customer/year. And finally, the results of an analysis of the MAIFI index for all feeders meet the IEEE standard of 5 times/year/customers.

Mountain Bicycle Cycling Comfort on Different Road Surfaces Soffarina Soffarina
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 3, No 1 (2020): JSAE
Publisher : Widyagama University of Malang

Mountain bicycle is one of the types of bicycles, and it is made for off-road cycling. The main objective of the research is to focus on the surface of the road and weight to obtain and measure the vibration produce on the mountain bicycle. In order to investigate the vibrations, an accelerometer is placed under the saddle of the bicycle in order to get an accurate reading for different types of surfaces and the vibration of the weight. The cyclist had to cycle for 400 m in the average of 5.1 to 6.1 revolutions per minute on four different surfaces, and four different weight were investigated. The results show that the highest acceleration produced is which refers to mean value is the acceleration of loose gravel which is 0.46190. There is an insignificant value in the weight of the driver weighing 60 kg if replaced with 70 kg, 80 kg if the bike is running on four different kinds of roads.

Skyhook-PID Control Strategy to Improve Performance of a Pneumatic Active Suspension System Gigih Priyandoko
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 3, No 1 (2020): JSAE
Publisher : Widyagama University of Malang

The research applies a skyhook-PID control method for an active suspension system. The control strategy has three feedback control loops. They are the innermost loop for the force tracking of the pneumatic actuator, the intermediate loops applying skyhook strategy for the elimination of the disturbances, and the outermost loop using PID controller for the determination of the desired force. Some experiments were carried out on a physical test rig with a hardware-in-the-loops feature. The performance of the proposed control method was evaluated and benchmarked to examine the effectiveness of the system in suppressing the disturbance effect of the suspension system. It was found that the experimental results demonstrate the superiority of the active suspension system with Skyhook-PID scheme compared to the PID and passive suspension systems.

Behaviour of Reinforced Concrete Beams With Circular Transverse Openings Under Static Loads Ling Jen Hua; Howe Sheng Tang; Wen Kam Leong; How Teck Sia
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 3, No 1 (2020): JSAE
Publisher : Widyagama University of Malang

Transverse opening in a reinforced concrete beam allows the crossing of mechanical and electrical services through the beam. However, it affects the strength of a beam. Understanding its structural behaviour is crucial to ensure a safe design of the beam. For that, an experimental study was carried out on reinforced concrete beams with circular transverse openings. The four-point load test was conducted to study the effects of the size and the position of the opening on the beam performance under the shear and flexural loads. In addition, three reinforcing methods for the opening were tested. The beams were evaluated in terms of the load-displacement responses, mechanical properties, deflections, and failure modes. The opening with the diameter not exceeding 0.25 times beam height affected about 20% of beam strength (without reinforcements at the opening). The diagonal bar reinforcing method effectively restored the beam strength for the opening size not exceeding 1/3 of beam height. The equation model proposed conservatively predicted the ultimate capacity of the beam with a transverse opening.

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Home Page

OAI Link

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Contact Name Gigih Priyandoko

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Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Gigih Priyandoko

Contact Email
jsae@widyagama.ac.id

Phone
-

Journal Mail Official
jsae@widyagama.ac.id

Editorial Address
-

Location
Kota malang,

Jawa timur

INDONESIA