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Selected Papers from ICAET 2022
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Selected Papers from ICAET 2022

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (30 July 2022) | Viewed by 9652

Special Issue Editors

Prof. Dr. Jong Wan Hu

E-Mail Website
Guest Editor
Department of Civil and Environmental Engineering, Incheon National University, Incheon, Republic of Korea
Interests: seismic design; smart structures; concrete materials; reinforced concrete; structural experiments; performance evaluation; finite element analysis
Special Issues, Collections and Topics in MDPI journals
Dr. Dongkeon Kim

E-Mail Website
Guest Editor
Department of Architectural Engineering at Dong-A University, 37 Nakdong-Daero 550beon-gil, Saha-gu, Busan, Korea
Interests: seismic analysis; seismic performance evaluation of buildings

Special Issue Information

Dear Colleagues,

The International Conference on Advanced Engineering and Technology (ICAET 2022) covers a wide range of fields in science and engineering technology and aims to bring together engineering technology expertise. During the conference, there should be substantial time for presentation and discussion. In addition, poster sessions and exhibitions offer ample opportunity for information exchange among delegates and participants, especially for those who are looking for new opportunities between presenters and participants.

Aside from these conference papers, general Special Issue papers can be accepted for submission to our Special Issue. Attendees will find various activities useful in bringing together a diverse group of engineers and technologists from across disciplines for the generation of new ideas, collaboration potential, and business opportunities.

Prof. Dr. Jong Wan Hu
Dr. Dongkeon Kim
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

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Published Papers (3 papers)

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Research

19 pages, 6236 KiB  
Article
Influence of FK209 Cobalt Doped Electron Transport Layer in Cesium Based Perovskite Solar Cells
by Ahmed Hayali, Roger J. Reeves and Maan M. Alkaisi
Appl. Sci. 2022, 12(18), 9382; https://doi.org/10.3390/app12189382 - 19 Sep 2022
Viewed by 1992
Abstract
The efficiency and stability of perovskite solar cells (PSCs) depend not only on the perovskite film quality, but they are also influenced by the charge carriers of both the electron and hole transport layers (ETL and HTL). Doping of the carrier transport layers [...] Read more.
The efficiency and stability of perovskite solar cells (PSCs) depend not only on the perovskite film quality, but they are also influenced by the charge carriers of both the electron and hole transport layers (ETL and HTL). Doping of the carrier transport layers is considered one of effective technique applied to enhance the efficiency and performance of the PSCs. FK209 cobalt TFSI and lithium TFSI salt were investigated as dopants for mesoporous TiO2 (M-TiO2) in the ETL. Herein, FK209 cobalt doping offers improved conductivity, reproducibility and stability compared to other doping or undoped M-TiO2 control device. It has been found that an optimum concentration of 2.5 mg FK209 cobalt in the M-TiO2 has resulted in an efficiency of 15.6% on 0.36 cm2 active device area, whereas, the undoped M-TiO2 yielded an average efficiency of 10.8%. The enhanced efficiency is due to the improved conductivity of the ETL while maintaining high transparency and low surface roughness with FK209 doping. The M-TiO2 doped with FK209 has a transparency of the 90% over the visible range and its measured energy gap was 3.59 eV. Perovskite films deposited on the M-TiO2 doped with FK209 has also a lower PL intensity indicating faster charge extraction. The measured lifetime of the perovskite films deposited on the optimised M-TiO2 film was 115.8 ns. Full article
(This article belongs to the Special Issue Selected Papers from ICAET 2022)
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12 pages, 4987 KiB  
Article
Microstructure and Mechanical Properties of Manganese Bronze Submitted to Cold Work and Subsequent Heat Treatment
by Flávia Gonçalves Lobo, Han Pang Huang, Vinícius Torres dos Santos, Marcio Rodrigues da Silva, Givanildo Alves dos Santos and Antonio Augusto Couto
Appl. Sci. 2022, 12(14), 6974; https://doi.org/10.3390/app12146974 - 9 Jul 2022
Cited by 2 | Viewed by 2394
Abstract
The present study evaluated the influences of different temperatures during heat treatment on the microstructure and mechanical properties of the manganese bronze alloy. During heating, there was a decrease of stored energy in the form of crystal defects due to the mechanisms of [...] Read more.
The present study evaluated the influences of different temperatures during heat treatment on the microstructure and mechanical properties of the manganese bronze alloy. During heating, there was a decrease of stored energy in the form of crystal defects due to the mechanisms of rearrangement and the annihilation of dislocations, followed by nucleation and grain growth. Initially, the samples were drawn using 34% cold work. Then, the specimens were heat-treated for one hour with different temperatures ranging from 200 to 750 °C, increasing by 50 °C for each sample. The chemical composition characterization was determined by X-ray fluorescence spectrometry (XRF). The mechanical property characterization involved the Vickers hardness, tensile strength, yield strength, and elongation. For the microstructural analysis of the samples, optical microscopy and scanning electron microscopy were used. The results showed an increase of elongation and decrease of the Vickers hardness and tensile and yield strengths with the increasing annealing temperature. The Hollomon model was used to investigate the strain-hardening behavior in all specimens. The (n) strain-hardening coefficient and the (K) strength coefficient were calculated, and the correlation with the increase of temperature occurred with the increase of n and variation of K after the recrystallization temperature. Full article
(This article belongs to the Special Issue Selected Papers from ICAET 2022)
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22 pages, 11623 KiB  
Article
Analysis of Adhesive Joints in a GFRP Bridge Deck under Bidirectional Bending Due to Traffic Wheel Loads
by Sin-Zeon Park, Seong-Hoon Jeong, Hyerin Lee and Kee-Jeung Hong
Appl. Sci. 2022, 12(5), 2748; https://doi.org/10.3390/app12052748 - 7 Mar 2022
Viewed by 1823
Abstract
Glass-fiber-reinforced polymer (GFRP) decks have been widely used in the rehabilitation and construction of bridges as a replacement for conventional deck materials, such as steel, concrete, and wood. In this study, an analysis method for checking the local safety of joints in adhesively [...] Read more.
Glass-fiber-reinforced polymer (GFRP) decks have been widely used in the rehabilitation and construction of bridges as a replacement for conventional deck materials, such as steel, concrete, and wood. In this study, an analysis method for checking the local safety of joints in adhesively connected GFRP decks under bidirectional bending due to traffic wheel loads is newly presented. This method can be applied for designing and evaluating the joints of other FRP decks. The orthotropic material properties of the deck were approximately assumed according to the test results and previous research. Three-dimensional solid elements were used to simulate the local behavior of the adhesive and deck substrates at the joints. Global deflections of the deck and local deformations of the adhesive were evaluated for serviceability. The local stresses in the adhesive and deck substrate are evaluated at the joint to check for local failure modes of the joint under serviceability and ultimate limit states. The analysis results indicate that local failures of the adhesive and deck substrate at the joint occurred. Recommendations for avoiding these local failures and performing more precise analysis are suggested. Full article
(This article belongs to the Special Issue Selected Papers from ICAET 2022)
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