Crimson Publishers-Civil Engineering Journal

Abstract Natural disasters (earthquakes, hurricanes, tornadoes. and floods) or man-made disasters or accidents (missile/aircraft impacts, fires. and explosions) lead to substantial damage on critical infrastructures and communities and have social, economic, and environmental consequences. As the safety of civil infrastructures is critically important, effective structural health monitoring (SHM) systems of infrastructures should be developed to avoid and mitigate the risks caused by various types of hazards. Carbon Nanofiber Aggregates (CNFAs) developed at the University of Houston are piezoelectric aggregates that can respond uniquely to different multi-hazards. This unique response makes this a sensor capable of being used in the Structural Health Monitoring (SHM) of civil infrastructures in each of the multi-hazards. This paper explains how CNFAs can be used for multi-hazard monitoring and discusses the ultra-low noise, high sensitivity of CNFA sensor electrical interfaces, radiati...

Introduction The global energy crisis prompted renewable energy sources to occupy the power market quickly. The ocean energy is inexhaustible. As a critical device for marine current energy conversion, a marine current turbine (MCT) is very important for safe and stable operation [1]. As the core component of MCT, the blade is prone to various failures due to long-term exposure to seawater [2]. This mini review will reveal the common failure phenomena in MCT, such as crack and biofouling. The failure phenomenon and several fault detection methods are also presented in this review. Finally, the point of view and future activities suggestions are given in the discussion.  Read More About this Article:  https://crimsonpublishers.com/acet/fulltext/ACET.000596.php Read More  Crimson Publishers Google Scholar  Articles:  https://scholar.google.com/citations?view_op=view_citation&hl=en&user=uUhmdKEAAAAJ&citation_for_view=uUhmdKEAAAAJ:0EnyYjriUFMC

Abstract Public authorities in developing countries have a significant role in the application of sustainability in the building sector. They are responsible for: (i) adopting new regulations and guidelines about sustainability requirements in the design, construction, and management of buildings and (ii) the use of sustainability as an essential requirement for the construction and renovation of public buildings. However, since the application of sustainability in the construction sector approach is still embryonic in developing countries, a significant effort is required to adopt international knowledge and experience in sustainability. This paper aims to fill this gap by developing a framework for assessing the sustainability of public buildings in the Palestinian territory. The framework includes establishing sustainability indicators for public buildings based on the literature review and the opinion of a panel of experts. The paper presents the methodology followed to identify th...

  The advances made in computational algorithms, computing power and visualization tools are motivating researchers to develop new numerical models or enhance the predictive abilities of existing numerical models. These advances include a combination of enhanced flow equations, improved discretization techniques that reduce the flow equations to algebraic equations, grid methodology, a better understanding of the flow phenomena, highperformance computers, optimization tools, interfaces to enter and process the data input, post-processor visualization and analysis tools. These next-generation computational models are facilitating in capturing the flow physics at various spatial and temporal scales that were not possible until two decades back, primarily due to limitations in computing power. As this limitation eases, numerical modeling will continue to be at the forefront for advancing the frontiers of knowledge across all modeling disciplines. The reliability of these enhanced mode...

Abstract GIS (Geographic Information Systems) plays a crucial role in designing multi-source information based civil infrastructure plans. The present study evaluates the status of GIS in civil engineering education in developing countries. A comparative study to investigate the status of GIS education at universities was published in 1995 by the present study’s authors, which identified the need for GIS in civil engineering in developing countries. Since the early 2000s, a revolutionary development in digital computing and the internet has transformed how major civil infrastructure projects are planned. Even though the advances on the internet share the benefits of electronic communication among nations, the barriers that developing countries faced 25 years ago seem still overshadowing to build a valid educational link between civil engineering and GIS. This study suggests several recommendations to increase the inclusion of a GIS in civil engineering education in developing countries...

Abdel Rahim [1] proposed many modifications on the CFDST specimens which were carried out by Zhao et al. [2]. Continuosly, this opinion manuscript proposes further design modifications. By extending double skin CFST to hybrid triple skin CFST with an extra Glass Fiber Reinforced Polymer (GFRP) reinforcement layer installed on the outer stainlesssteel tube. In addition, this design modification which is anticipated by the author of this opinion paper has three concrete fill sandwich layers. The first concrete fill sandwich layer lays between the outer stainless steel tube and the inner second layer carbon steel tube. Besides, the first concrete fill sandwich layer will be filled with Ultra High-Performance Fiber Reinforced Polymer (UHPFRC). Furthermore, the second concrete fill sandwich layer lays between the inner second layer carbon steel tube and the inner third layer carbon steel tube. Moreover, the second concrete fill sandwich layer will be filled with Normal Strength Concrete (NS...

Abstract Due to the COVID-19 pandemic, there has been an increase in the number of people infected with coronavirus and the number of infected people being indoors. In particular, infection between family members in house is serious. However, there is insufficient information on how to create an isolation room in house or how to ventilate it. Therefore, this study investigated the air flow from the isolation room to the common space and suggested a ventilation method for the isolation room. The study result showed that the ventilation port of isolation room was effective in securing the ventilation volume of isolation room. Moreover, the ventilation volume in the isolation room could be increased by operating the exhausted ventilation fan, thereby reducing the risk of infection in isolation room. This implied that air flow from isolation room to the shared space might be suppressed by operating a simple ventilation fan, so it can reduce the risk of infection in cohabit-ants of the shar...