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Gea, Markus
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Two-stage Anaerobic Reactor Design of SS 316 Material with Application of Penetrant Test Method (NDT) Gea, Markus; Khaerudini, Deni Shidqi
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 13, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v13i2.27069

Abstract

Abstract-- Anaerobic reactors are essential in processing organic waste, biomass, and wastewater into desired end products through a dark fermentation process. This process involves bacteria decomposing organic matter without light or oxygen, producing hydrogen gas, and other by-products. In this study, the design, manufacture, and testing of a two-stage anaerobic reactor of stainless steel 316 material were carried out carefully, considering dimensions, and material specifications. The device design process involved design simulation using SolidWorks, while the manufacturing stage involved material preparation, component forming, welding, and device installation. Testing was conducted using Nondestructive testing (NDT) methods to detect surface defects, and ensure the structural integrity of the reactor. This study provides an in-depth overview of the manufacturing process of a two-stage anaerobic reactor, including material preparation, welding, and NDT testing, hoping to contribute to developing more effective, and sustainable organic waste treatment technologies.
Simulasi Pemodelan Crane Hook Tipe Baja AISI A514 Alloy Stell Menggunakan Software Autodesk Inventor Professional 2020 Cahyadi, Muhammad; Nasrun, Mohamad; Gea, Markus
Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK) Vol. 5 No. 2 (2024): Jurnal Inovasi Ilmu Pengetahuan dan Teknologi (JIPTEK)
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/JIPT.v5i2.40084

Abstract

Lifting aircraft or crane is a combination of a lifting mechanism separately with a frame to lift and or simultaneously move loads that can be hung freely or tied to a crane. Part of the crane hoist has a main component called a crane hook that functions as a load or material hook. The hook is one of the hoisting elements that is very important in crane operations[9]. The types of hooks differ in terms of function, material, form and safety factor, so they must be analyzed, inspected and tested properly so as not to endanger workers in the field. The analysis was carried out numerically using Autodesk Inventor Professional 2020 software[2] . Analysis of hooks generally uses analytical methods or calculations with mathematical models and standardized (common) Algebraic formulas, along with the development of technology today, many engineering sciences have been developed in the field of finite element science which unites mathematics, engineering and science. computer to produce software such as Autodesk Autocad, Autodesk Inventor. In the simulation results of the finite element software on the hook for a loading of 25 tons, the single hook type obtained a maximum stress of 807.809 MPa and the deflection that occurred was 1.444 mm, in the double hook type the maximum stress was 532.632 MPa and the deflection was 0.1871 mm. The simulation results will then be compared with the results of analytical calculations. Analytical calculations for single hooks obtained working stress of 761,729MPa, on double hooks of 387,102 Based on the simulation results and analytical calculations, it can be concluded that the crane hook structure is still within safe limits. This is because the yield strength of the material used in AISI A514 alloy steel is 890 MPa. However, of the three types of hooks at a loading of 25 tons, single hooks have the greatest potential for failure.
Co-Authors Cahyadi, Muhammad Deni Shidqi Khaerudini Nasrun, Mohamad