Aprianur Fajri

Aprianur Fajri
Sebelas Maret University | UNS · Manufacturing Engineering

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15
Publications
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101
Citations

Publications

Publications (15)
Article
Full-text available
In this paper, research and comparison of tensile and impact properties were conducted on several materials broadly categorized as Steel and Alloys at cryogenic temperature of 77 K or -196°C. Tensile and impact properties exhibit an inverse relationship due to the nature of metals, where if a material has high strength, its ductility will decrease,...
Article
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Carbon-fiber-reinforced polymers (CFRPs) are a composite material popular for thin-walled structure applications because of their advantages over other materials. In this study, numerical simulation analysis based on the finite-element method to identify the tensile behavior of CFRP woven material has been carried out. The method used has been veri...
Article
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Cylindrical shell structures are ubiquitous and essential supporting structures in various engineering applications. The aim of this research work is to provide a comprehensive overview of the behavior of cylindrical shell structures under different loading conditions, including external pressure, axial compression, and bending moment. The study fo...
Article
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The bus driver's comfort is crucial. The location of the driver's seat, which is correlated with the seat support design, is one of the elements supporting his comfort. The bus business chosen as a representative is PT Selamet Trans Abadi, which has its headquarters in Pati City, Central Java. By considering the Safety Factor, House of Quality (HOQ...
Article
Liquefied Natural Gas (LNG) has a significant benefit in reducing air pollutants such as sulfur oxide, nitrogen oxide, and particulate matter emitted by Diesel Oil or Heavy Fuel Oil. The International Maritime Organization (IMO) regulates these pollutants in MARPOL Protocol Annex VI. It was implemented by establishing an Emission Control Area (ECA)...
Article
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Energy-saving and emission reduction are crucial since shipping activity due to the global maritime trade has increased exponentially. Several agreements have been engaged to optimize ship energy efficiency composed of ship design and shipping operation planning. However, most up-to-date studies focused on speed and route optimization. The interact...
Article
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This paper presents a numerical procedure based on the finite element (FE) method using ANSYS Workbench software to analyse fatigue phenomena in ship structures. Fatigue failure prediction is used as a stress–life approach, when the stress is still in a linear area. This condition is frequently referred as high-cycle fatigue. Five geometric shapes...
Article
The fatigue phenomenon caused by cyclic loads on the mechanical structures needs to be considered during the design process of any engineering structures. Cyclic loads that are even below yield strength can cause failure if they are repeated continuously in a certain period of time. Estimating fatigue life accurately is very important task, which v...
Article
Fatigue failure is a phenomenon that often occurs in mechanical structures, especially in components that receive direct cyclic loading, e.g., marine facilities, automobiles, critical infrastructure, reservoirs, turbines, nuclear reactors, and features that work in extreme conditions. Several factors can affect fatigue resistance, including applied...

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