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INDONESIA
Jurnal SImetri Rekayasa
Published by Universitas Harapan Medan
ISSN : 2715890X     EISSN : 27165035     DOI : 10.35447
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Dalam Jurnal SIMETRI REKAYASA Membahas mengenai scope: Teknik Sipil Teknik Mesin Teknik Elektro Teknik Industri
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 83 Documents
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PEMBUATAN KAMPAS KOPLING MENGGUNAKAN SERAT SERABUT KELAPA Junaidi Junaidi; Fadly Ahmad Kurniawan Nasution
Jurnal Simetri Rekayasa Vol 3 No 2 (2021): Edisi Oktober 2021
Publisher : Universitas Harapan Medan

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Abstract

In this study, the authors tried to develop clutch lining products made from non-asbestos, because the raw material for coconut fiber in Indonesia is very abundant. Indonesian coconut production averages 15.5 billion eggs/year or equivalent to 3.02 million tonnes of copra, 3.75 million tonnes of water, 0.75 million tonnes of shell charcoal, 1.8 million tonnes of coir fiber and 3.3 million tonnes of methamphetamine dust. Knowing the wear rate of clutch linings using coconut fiber. Knowing the comparison of the quality of clutch linings made from asbestos with clutch linings made from coconut fiber and a mixture of fiberglass fibers. for the type of coupling pads specimen 1 has superior quality compared to standard commercial clutch pads, of the 2 types of clutch pads mixed from coconut fiber, specimen 1 is superior to specimen 2 this is because the friction temperature that occurs is lower compared to commercial clutch pads and clutch pads specimen 2. Clutch lining made of asbestos has a max Temperature value of: 415°C Total final thickness: 3mm Total final weight: 9g, Clutch lining made of coconut fiber fiber (specimen 1) has a max Temperature value of: 331°C Total final thickness: 4, 7mm Total final weight: 10g, Coupling lining made from coconut fiber (specimen 2) has a max. Temprature value: 372°C Total final thickness: 4.1mm Total final weight: 15g
ANALISIS SIFAT MEKANIK KOMPOSIT DIPERKUAT SERAT PINANG MENGGUNAKAN METODE PENGUJIAN BENDING STATIK Muhammad Arifin; Fadly Ahmad Kurniawan Nasution
Jurnal Simetri Rekayasa Vol 1 No 2 (2019): Edisi November
Publisher : Universitas Harapan Medan

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Abstract

This study aims to analyze the mechanical properties of areca nut fiber reinforced composites using static bending testing methods. Areca nut fiber reinforced composites are materials that show potential as an attractive alternative in engineering applications and natural fiber-based materials. Static bending testing methods are used to evaluate the modulus of elasticity, tensile strength, flexural strength, and ductility of composites. At the sample preparation stage, areca nut fibers are well arranged in a resin matrix to form a composite sample. The test is performed by applying a load on the midpoint of the sample gradually until a significant fracture or deformation occurs. During the test, the strain, force, and change in shape of the sample are measured. The test results show that areca nut fiber reinforced composites have significant values of modulus of elasticity, tensile strength, flexural strength, and ductility. Factors such as fiber orientation, fiber-matrix composition, and interactions between fibers and matrices can affect the mechanical characteristics of composites. This research provides a better understanding of the mechanical properties of areca nut fiber reinforced composites, which can be used for the development and application of such materials. The results of this study can also be used as a basis for comparison with other fiber-reinforced composites or other materials used in similar applications.
RANCANG BANGUN SISTEM KENDALI KELISTRIKAN MASJID AL-ISTIQOMAH MENGGUNAKAN PENERIMA HC-12 BERBASIS ARDUINO Febriansyah Putra; Ali Hanafiah Rambe; Lisa Adriana Siregar
Jurnal Simetri Rekayasa Vol 4 No 1 (2022): Edisi April 2022
Publisher : Universitas Harapan Medan

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Abstract

The current development of control and automatic system technology allows operators to easily turn on and off electronic devices remotely without having to make direct contact, this is very effective in saving time and helping one's work become easier. Currently electrical energy is a basic human need. However, the use of electrical energy is not used optimally, its use tends to be excessive, the cause is due to someone's negligence of an electrical device that forgot to turn it off. To overcome this problem, it is necessary to have an automatic control system that can control the switch to help minimize the waste of electrical energy. However, various kinds of automatic control system devices have drawbacks, including requiring an internet connection or using an SMS gateway so that they can be controlled remotely, which will increase spending on the budget for internet or credit needs every month. The method used in this design uses Arduino uno, HC – 12 module, ZMTC103C current sensor, and relay. This tool works when an instruction signal is received via the HC-12 module then the signal is forwarded to Arduino to turn on or turn off the electric device through a relay, the current sensor detects the condition of the electric device. From the results of testing the control system successfully turns on and off loads in the form of lights, fans, water pumps properly and can detect lights that go out.

Page 9 of 9 | Total Record : 83

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