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INDONESIA
Indonesian Journal of Engineering and Science (IJES)
Published by Asosiasi Peneliti Sriwijaya (APS)
ISSN : -     EISSN : 2774373X     DOI : 10.51630
Core Subject : Science, Engineering,
Energy Engineering Materials Science & Nanotechnology Mechanical Engineering
Indonesian Journal of Engineering and Science (IJES : ISSN 2274-373X) is a peer-reviewed journal that aims at the publication and dissemination of original research articles on the latest developments in all fields of engineering science and technology. The journal publishes original papers in English, which contribute to the understanding of engineering science and improvement of the engineering technology and education. Papers may be theoretical, experimental and paper review. The contribution should be unpublished before and not under consideration for publication elsewhere.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 5 Documents
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Search results for , issue "Vol. 5 No. 1 (2024): Table of Contents" : 5 Documents clear
THE POTENTIAL OF EVAPORATION BOATS WASTE AS A CRUCIBLE MATERIAL FOR CASTING: A REVIEW Habiby, M. Nuril Anwar; Rusiyanto, Rusiyanto; Widodo, Rahmat Doni
Indonesian Journal of Engineering and Science Vol. 5 No. 1 (2024): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v5i1.95

Abstract

Industry in Indonesia continues to experience development in line with advances in science and technology, and this is because the industrial sector makes the most significant contribution to the national economy. However, industrial operations that are getting bigger can produce various kinds of waste, one of which is waste from the processing of plastic metallization applications and modern vacuum coating on food packaging, namely evaporation boats. The result of this waste is substantial because, in its application, evaporation boats will always be used as long as plastic food packaging continues to be produced around the world, so it is necessary to have handling for environmental sustainability in the future. Evaporation boat waste is waste that cannot be decomposed but can withstand heat and be used as a refractory material, especially as a primary material for making crucibles.
WEAR RESISTANT OF CACO3/FLY-ASH CERAMIC MATRIX COMPOSITE Hadi, Qomarul; Hardiyanto, Dwiki
Indonesian Journal of Engineering and Science Vol. 5 No. 1 (2024): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v5i1.103

Abstract

This study aimed to investigate the potential of utilising fly ash, a harmful byproduct of coal waste, in the manufacturing of composite materials to reduce its environmental impact. Calcium carbonate (CaCO3) and fly ash were mixed with zinc stearate using the powder metallurgy method to create wear-resistant samples. The compaction load was adjusted to achieve optimal low-pressure compaction, with pressures of 22.75 MPa, 23.45 MPa, 24.14 MPa, and 24.83 MPa used for single punch pressing. After 10 minutes of holding time, sintering was conducted at 900 OC for 1 hour. The raw materials were tested using X-ray diffraction (XRD) and sieved based on the mesh size. The composite was characterised through various tests, including density testing, wear testing, and scanning electron microscopy (SEM) to observe the microstructure. The density value increased with the compaction load, with a maximum apparent density of 1.794 g/cm3 and the highest porosity percentage at a pressure of 22.75 Mpa of 31.155%. Furthermore, the specific wear value decreased as the compaction load increased, with the lowest specific abrasion value of 1.17 x 10-6 mm2/kg. Therefore, using fly ash to produce composite materials is a promising solution to reduce the negative impact of coal waste while producing wear-resistant materials.
THE PYROLYSIS OF HIGH-DENSITY POLYETHYLENE (HDPE) AND POLYPROPYLENE (PP) PLASTIC WASTE BLEND Marwani, Marwani; Trifarizy, Muhammad David
Indonesian Journal of Engineering and Science Vol. 5 No. 1 (2024): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v5i1.104

Abstract

Plastic waste is a growing problem that hurts the environment. The pyrolysis method converts plastic waste into alternative fuels to address this issue. This study aimed to investigate the impact of temperature on the characteristics of pyrolysis oil produced from a combination of High-Density Polyethylene (HDPE) and PolyPropylene (PP) plastic waste. The study focused on the resulting pyrolysis oil's volume, density, viscosity, and calorific value. The study results showed that the highest pyrolysis oil yield was obtained at 450ºC, with a volume of 350 ml. The density of the pyrolysis oil ranged from 670-790 kg/m3, while the viscosity ranged from 1.611-2.401 cP. The calorific value of the pyrolysis oil ranged from 7393.7584-8946.3759 cal/gr. The results demonstrate that the temperature significantly impacts the characteristics of the resulting pyrolysis oil. The study findings could be useful in optimizing the pyrolysis process to obtain high-quality oil from mixed plastic waste streams, thereby reducing plastic waste and providing an alternative energy source. The study highlights the potential for converting mixed plastic waste into alternative fuels through pyrolysis.
EXPERIMENTAL STUDY OF PARTICLE SIZE EFFECT ON SEPARATION EFFICIENCY OF DUAL CYCLONE SEPARATOR Puspitasari, Dewi; Hutapea, Felix Theo Yusama
Indonesian Journal of Engineering and Science Vol. 5 No. 1 (2024): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v5i1.105

Abstract

A cyclone separator is a device for separating solid particles and fluids. In this study, the performance of a cyclone separator was enhanced by adding a smaller cyclone. The objective is to separate coconut shell powder particles and determine the efficiency of the dual cyclone separator. The experiment involved varying the inlet airflow velocity to 7 m/s, 10 m/s, and 15 m/s and using different coconut shell powder particle sizes, ranging from mesh numbers 80 to 120. The results of the experiment showed that the efficiency of particle separation was significantly influenced by both the particle size and air velocity. Higher air velocity and larger particle size resulted in greater separation efficiency. The best performance was observed with the mesh particle size of 80 at an air velocity of 15 m/s, which achieved an efficiency value of 98.33%. The experiment also measured the particles' precipitated and wasted mass.
EXPERIMENTAL STUDY OF VERTICAL AXIS WIND TURBINE WITH PRE-SWIRL AUGMENTED Riady, M. Ihsan; Santoso, Dyos; Ervega, Frandiaz Agustan
Indonesian Journal of Engineering and Science Vol. 5 No. 1 (2024): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v5i1.107

Abstract

The paper presents an experimental investigation on a vertical axis wind turbine that utilizes pre-swirl augmentation through a concentric stator and rotor system. The study's main objective is to demonstrate that incorporating a stator as a guide blade can significantly enhance the turbine's performance. The rotor is positioned in the inner region of the turbine and is rotated by the flow induced by the stator surrounding it in the outer region. The stator accelerates the incoming wind before it reaches the rotor. The turbine has five rotor blades and has been tested with stator guide blades varying from zero to six and twelve. Both the guide rotor and blades use a modified cp-100-050-gn cambered plate airfoil. The tests were conducted at an average wind speed of 4 m/s. The results indicate that utilizing a stator with six guide blades leads to a 52% increase in the power coefficient, while a stator with 12 guide blades yields a slightly higher increase of 58%. Moreover, the turbine with a stator comprising 12 guide blades takes less time to attain maximum speed under no-load conditions than the one with a stator with six guide blades.

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