Volume 31 Issue 4 2024

Volume 31 Issue 4 2024

Journal of Functional Materials — Research Articles

Serial: 1

Modular Optimization Techniques in Structural Mechanics

Authors: Aurélien Dumont, Elara Saeed
Page No: 1–10
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—This paper develops a meshless approach, called Element Free Galerkin (EFG) method, which is based on the weak form Moving Least Squares (MLS) of the partial differential governing equations and employs the interpolation to construct the meshless shape functions. The variation weak form is used in the EFG where the trial and test functions are approximated bye the MLS approximation. Since the shape functions constructed by this discretization have the weight function property based on the randomly distributed points, the essential boundary conditions can be implemented easily. The local weak form of the partial differential governing equations is obtained by the weighted residual method within the simple local quadrature domain. The spline function with high continuity is used as the weight function. The presently developed EFG method is a truly meshless method, as it does not require the mesh, either for the construction of the shape functions, or for the integration of the local weak form. Several numerical examples of two-dimensional static structural analysis are presented to illustrate the performance of the present EFG method. They show that the EFG method is highly efficient for the implementation and highly accurate for the computation. The present method is used to analyze the static deflection of beams and plate hole. Keywords—Numerical computation, element-free Galerkin, moving least squares, meshless methods. I.

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Year: 2024
Journal: Research Paper
Vol/Issue: 31 (4)
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Aurélien Dumont, Elara Saeed, "Modular Optimization Techniques in Structural Mechanics," Journal of Functional Materials, vol. 31, no. 4, pp. 1–10, 2024.

Serial: 2

Numerical Optimization of Convection Heat Transfer in Enclosures with Geometric Obstacles

Authors: S. J. Azizi, A. L. W. Patel, M. A. Jaber
Page No: 11–16
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—A numerical study of natural convection heat transfer in water filled cavity has been examined in 3-Dfor single phase liquid cooling system by using an array of parallel plate fins mounted to one wall of a cavity. The heat generated by a heat source represents a computer CPU with dimensions of 37.5∗37.5mm mounted on substrate. A cold plate is used as a heat sink installed on the opposite vertical end of the enclosure. The air flow inside the computer case is created by an exhaust fan. A turbulent air flow is assumed and k-ε model is applied. The fins are installed on the substrate to enhance the heat transfer. The applied power energy range used is between 15 – 40W. In order to determine the thermal behaviour of the cooling system, the effect of the heat input and the number of the parallel plate fins are investigated. The results illustrate that as the fin number increases the maximum heat source temperature decreases. However, when the fin number increases to critical value the temperature start to increase due to the fins are too closely spaced and that cause the obstruction of water flow. The

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Year: 2024
Journal: Research Paper
Vol/Issue: 31 (4)
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S. J. Azizi, A. L. W. Patel, M. A. Jaber, "Numerical Optimization of Convection Heat Transfer in Enclosures with Geometric Obstacles," Journal of Functional Materials, vol. 31, no. 4, pp. 11–16, 2024.

Serial: 3

Advancements in Sustainable Construction Methods

Authors: Dr. Aarushi Sharma, Prof. Kavin Mehta
Page No: 17–21
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To fulfil the housing and infrastructure requirements of increasing population, in last few decades Indian construction industry has grown in large amount. With the

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Year: 2024
Journal: Research Paper
Vol/Issue: 31 (4)
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Dr. Aarushi Sharma, Prof. Kavin Mehta, "Advancements in Sustainable Construction Methods," Journal of Functional Materials, vol. 31, no. 4, pp. 17–21, 2024.

Serial: 4

Mathematical Models for Complex Systems Optimization

Authors: Erik J. Andersen, Sophia M. Patel
Page No: 22–29
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Abstract not available.

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Year: 2024
Journal: Research Paper
Vol/Issue: 31 (4)
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Erik J. Andersen, Sophia M. Patel, "Mathematical Models for Complex Systems Optimization," Journal of Functional Materials, vol. 31, no. 4, pp. 22–29, 2024.

Serial: 5

Prediction of California Bearing Ratio from Geotechnical Properties of Sandy Soils

Authors: Elena Vasquez, Julian Sanchez
Page No: 30–36
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—The California Bearing Ratio (CBR) has been acknowledged as an important parameter to characterize the bearing capacity of earth structures, such as earth dams, road embankments, airport runways, bridge abutments and pavements. Technically, the CBR test can be carried out in the laboratory or in the field. The CBR test is time-consuming and is infrequently performed due to the equipment needed and the fact that the field moisture content keeps changing over time. Over the years, many correlations have been developed for the prediction of CBR by various researchers, including the dynamic cone penetrometer, undrained shear strength and Clegg impact hammer. This paper reports and discusses some of the results from a study on the prediction of CBR. In the current study, the CBR test was performed in the laboratory on some finegrained subgrade soils collected from various locations in Victoria. Based on the test results, a satisfactory empirical correlation was found between the CBR and the physical properties of the experimental soils. Keywords—California bearing ratio, fine-grained soils, pavement, soil physical properties. I.

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Year: 2024
Journal: Research Paper
Vol/Issue: 31 (4)
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Elena Vasquez, Julian Sanchez, "Prediction of California Bearing Ratio from Geotechnical Properties of Sandy Soils," Journal of Functional Materials, vol. 31, no. 4, pp. 30–36, 2024.

Serial: 6

Characterization of Organic Soil Behavior

Authors: Ebru Akbas, Cagatay Kocabas
Page No: 37–41
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—Sustainable development is one of the most important topics in today's world, and it is also an important research topic for geoenvironmental engineering. Dredging process is performed to expand the river and port channel, flood control and accessing harbors. Every year large amount of sediment are dredged for these purposes. Dredged marine soils can be reused as filling materials, road and foundation embankments, construction materials and wildlife habitat developments. In this study, geotechnical engineering properties and compressibility behavior of dredged soil obtained from the Izmir Bay were investigated. The samples with four different organic matter contents were obtained and particle size distributions, consistency limits, pH and specific gravity tests were performed. The consolidation tests were conducted to examine organic matter content (OMC) effects on compressibility behavior of dredged soil. This study has shown that the OMC has an important effect on the engineering properties of dredged soils. The liquid and plastic limits increased with increasing OMC. The lowest specific gravity belonged to sample which has the maximum OMC. The specific gravity values ranged between 2.76 and 2.52. The maximum void ratio difference belongs to sample with the highest OMC (e11% = 0.38). As the organic matter content of the samples increases, the change in the void ratio has also increased. The compression index increases with increasing OMC. Keywords—Compressibility, consolidation, geotechnical properties, organic matter content, organic soils. I.

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Year: 2024
Journal: Research Paper
Vol/Issue: 31 (4)
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Ebru Akbas, Cagatay Kocabas, "Characterization of Organic Soil Behavior," Journal of Functional Materials, vol. 31, no. 4, pp. 37–41, 2024.

Serial: 7

Enhancing Healthcare Data Analytics with Architecture-Based Frameworks

Authors: Elena Vasquez, Liam Chen
Page No: 42–45
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—Healthcare delivery systems around the world are in crisis. The need to improve health outcomes while decreasing healthcare costs have led to an imminent call to action to transform the healthcare delivery system. While Bioinformatics and Biomedical Engineering have primarily focused on biological level data and biomedical technology, there is clear evidence of the importance of the delivery of care on patient outcomes. Classic singular decomposition approaches from reductionist science are not capable of explaining complex systems. Approaches and methods from systems science and systems engineering are utilized to structure healthcare delivery system data. Specifically, systems architecture is used to develop a multi-scale and multi-dimensional characterization of the healthcare delivery system, defined here as the Healthcare Delivery System Knowledge Base. This paper is the first to contribute a new method of structuring and visualizing a multi- dimensional and multi-scale healthcare delivery system using systems architecture in order to better understand healthcare delivery. Keywords—Health informatics, systems thinking, systems architecture, healthcare delivery system, data analytics. I.

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Year: 2024
Journal: Research Paper
Vol/Issue: 31 (4)
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Elena Vasquez, Liam Chen, "Enhancing Healthcare Data Analytics with Architecture-Based Frameworks," Journal of Functional Materials, vol. 31, no. 4, pp. 42–45, 2024.

Serial: 8

Nanostructured Catalysts for Sustainable Energy

Authors: Ariana Jensen, Liam McCormick
Page No: 46–52
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—Oxygen Reduction Reaction (ORR) performance of iron and nitrogen co-doped porous carbon nanoparticles (Fe-NPC) with various physical and (electro) chemical properties have been investigated. Fe-NPC nanoparticles are synthesized via a facile soft- templating procedure by using Iron (III) chloride hexa-hydrate as iron precursor and aminophenol-formaldehyde resin as both carbon and nitrogen precursor. Fe-NPC nanoparticles shows high surface area (443.83 m2g-1), high pore volume (0.52 m3g-1), narrow mesopore size distribution (ca. 3.8 nm), high conductivity (IG/ID=1.04), high kinetic limiting current (11.71 mAcm-2) and more positive onset potential (-0.106 V) compared to metal-free NPC nanoparticles (-0.295V) which make it high efficient ORR metal- free catalysts in alkaline solution. This study may pave the way of feasibly designing iron and nitrogen containing carbon materials (Fe-N-C) for highly efficient oxygen reduction electro-catalysis. Keywords—Electro-catalyst, mesopore structure, oxygen reduction reaction, soft-template. I.

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Year: 2024
Journal: Research Paper
Vol/Issue: 31 (4)
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Ariana Jensen, Liam McCormick, "Nanostructured Catalysts for Sustainable Energy," Journal of Functional Materials, vol. 31, no. 4, pp. 46–52, 2024.

Serial: 9

Optimization of Hybrid Building Systems

Authors: Eunice A. Lee, Ethan M. Patel
Page No: 53–56
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—This study carried out comparative seismic performance of reinforced concrete frames infilled by masonry walls with different heights. Partial and fully infilled reinforced concrete frames were modelled for the research objectives and the analysis model for a bare reinforced concrete frame was also established for comparison. Non–linear static analyses for the studied frames were performed to investigate their structural behaviour under extreme seismic loads and to find out their collapse mechanism. It was observed from analysis results that the strengths of the partial infilled reinforced concrete frames are increased and their dactylitis are reduced, as infilled masonry walls are higher. Especially, reinforced concrete frames with higher partial infilled masonry walls would experience shear failures. Non–linear dynamic analyses using 10 earthquake records show that the bare and fully infilled reinforced concrete frame present stable collapse mechanism while the reinforced concrete frames with partially infilled masonry walls collapse in more brittle manner due to short-column effects. Keywords—Fully infilled RC frame, partially infilled RC frame, masonry wall, short–column effects. I.

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Year: 2024
Journal: Research Paper
Vol/Issue: 31 (4)
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Eunice A. Lee, Ethan M. Patel, "Optimization of Hybrid Building Systems," Journal of Functional Materials, vol. 31, no. 4, pp. 53–56, 2024.
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