Volume 25

In order to solve the restrictions on athletes and the time and cost of equipment replacement caused by traditional sports equipment, which are easy to corrode, have short service life, poor mechanical properties, and are relatively heavy, etc., more excellent polymer materials and new materials are used in various aspects. technology to replace traditional materials. At the same time, the diversified characteristics of polymer materials can provide more types of choices for various sports equipment. In order to understand the application and influence of polymer composite materials in competitive sports, the application of polymer compounds is analyzed in combination with the preparation process in this paper, material performance and performance requirements of sports equipment. By comparing the performance of athletes in different eras without using the same equipment and the length of their competitive career, this paper concluded that the application of polymer composite materials in competitive sports has greatly improved the performance of athletes and reduced the risk of injury , It also increases convenience and safety for ordinary people.

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The primary issue with concrete structures is steel bar corrosion. Therefore, FRP (Fiber Reinforced Polymer) bars are often to substitute steel bars to tackle the issue of concrete swelling and cracking brought about by steel corrosion. FRP bars’ feature improved corrosion resistance, a stronger strength-to-quality ratio, and better fatigue resistance. However, the alkaline environment will affect the long-term strength and durability of FRP, according to certain research, which will cause the FRP bars’ mechanical characteristics to deteriorate. In this paper, the properties of FRP bars under alkaline conditions are reviewed, considering the harsh external environment and physical properties of FRP bars. Comprehensive investigation concludes that lowering the PH value of concrete and changing the kind of fiber material may considerably increase the endurance of FRP in alkaline environments. By demonstrating the microscopic breakdown process of FRP bars in an alkaline conditions using scanning electron microscopy. The Arrhenius acceleration theory was used to construct the present model for forecasting the long-term mechanical behavior of FRP bars, which shows how this material degrades under alkaline circumstances. This study may be utilized as a reference for FRP bars used in alkaline environments in terms of durability studies.

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This review focuses on the impact of numerous conditions on the fluorescence function of silver nanoclusters (AgNCs) as biomarkers. Factors such as particle size, structure and different ligand types are explored. First off, differential stability, sensitivity, cellular uptake, and biodistribution as well as red or blue shifts in absorption and emission wavelengths are caused by varied particle sizes. Furthermore, in the context of detecting microRNA using AgNC-based probes, the presence of a mismatched self-dimer structure is also crucial for achieving a significant red emission. In the final section, the considerable influence of ligands—divided into primary and secondary ligands—on the photoluminescence (PL) characteristics of atomically accurate AgNCs is examined with a focus on Ag29 nanoclusters.

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The various characteristics of shape memory alloys, such as hyperelasticity, memory alloy effect and so on, make shape memory alloys become a new type of material with broad engineering applications. These components developed based on the characteristics of shape memory alloys are not only used in the aerospace field, but also in various fields such as bridges and railways, and can be used for various purposes such as bridge vibration control and intelligent hybrid control. This article mainly introduces several characteristics of shape memory alloys, and explains the practical application and development prospects of shape memory alloys in the aerospace field. Based on these studies, this article studies the characteristics of shape memory alloys through equation calculus and ANSYS simulation experiments modeling. It can be foreseen in the future that with the development of intelligent control technology, shape memory alloy structures will have a larger operating temperature range, more precise structural control, and will be applied in a wider variety of spacecraft structures.

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Piezoelectric transducers have seen widespread usage in the monitoring of structural health. It has tremendous potential for monitoring the health of infrastructure, especially pavement monitoring. In the present study, the impedance characteristics of a piezoelectric plate embedded in the pavement is utilized to monitor the health status of the pavement. Based on the piezoelectricity principle, a model of an electromechanical piezoelectric plate embedded in pavement is established. The damage of the pavement is considered as the thickness decreasing of the pavement layer. The present proposed model is verified by comparing its degeneration with the exact solution of a single layer model. Numerical results demonstrated that with the deceasing of the thickness of the pavement, which is considered as the deterioration of the pavement, the achievable maximum electromechanical impedance characterization including impedance, admittance and conductance decreased. This demonstrated that the achievable maximum impedance, admittance and conductance of an embedded piezoelectric plate could be used as the indicator of pavement health monitoring. This study primarily presents theoretical underpinnings for pavement monitoring using electromechanical impedance of piezoelectric plates.

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Structural topology optimization seeks to identify the most efficient way to allocate material within a given domain to achieve a specific design objective. This research area has broad applications in various fields, including mechanical design and other physical disciplines. Over the past two decades, a great variety of applications and diverse research papers on structural topology optimization have been undertaken and published in the last two decades to highlight its acceptance and advantages. This paper presents a scientometric analysis of 5713 papers published between 2000 and 2022 to provide an overview and visualization of the development of structural topology optimization. While there are numerous approaches to topology optimization, this study focuses on presenting a quantitative analysis of the most popular and influential methods. The method used in this paper involved data collection and analysis through CiteSpace, one of the most popular software tools in this field. This paper provides a comprehensive overview of the latest developments of research in structural topology optimization and identifies key directions for future research. The analysis of the top 10 co-cited articles revealed four main approaches that have been developed for structural topology optimization.

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Since the outbreak of the COVID-19 epidemic, people's lifestyles have been significantly changed. In a post-epidemic era, some of the existing social problems are magnified by the changes in lifestyle. Temporary isolation at home becomes commonplace and continuously makes people think more carefully and deeply about their houses' functionality, safety, and comfort. In addition, the emotional impact of the epidemic has also forced people to get more security and happiness from the outside environment. By summarizing the problems of the existing buildings during the epidemic, this paper collects and studies different types and characteristics of movable architecture to conclude how these transformable designs can help people deal with the problems exposed in functional space and mental needs arising from the epidemic era. The results of different transformable architecture techniques on spatial boundaries are summarized from transformable or movable buildings. The combination and penetration of transformable architecture with different scales of space are used as the entry point to propose that movable architecture can promote communication and exchange between people. The core value of movable architecture is to break the inherent boundary of architectural space and make more connections between the inside and outside space. Thus, it lays the foundation for having more face-to-face communication between people.

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With the development of science and technology, China is building more and more Bridges. The inspection and maintenance of bridge during operation plays an important role in the safety of bridge. Firstly, the research background and significance of bridge structure health inspection are introduced, and the research status and progress of health inspection are analyzed. Then, several commonly used monitoring methods are listed. Based on the comprehensive study of the bridge health monitoring system, the main conclusions are as follows: the bridge health monitoring system is realized through the coordination of several subsystems, including: bridge working environment monitoring, bridge structure overall performance monitoring and bridge structure local performance monitoring. The bridge structural health monitoring system is mainly used in bridge damage identification and bridge safety warning. The bridge structure health monitoring system conforms to the development trend of high technology and will become an indispensable part of the bridge operation in the future.

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With the continuous advancement of China's economic construction, the population density is increasing, and the construction of high-rise buildings is also constantly advancing. This paper addresses settlement issues related to the construction of tall buildings. The author conducts a comprehensive analysis of the current state of tall buildings in China and explores the causes and negative impacts of settlement. To proactively mitigate settlement in high-rise buildings, the author presents two established monitoring methods based on triangulation. The first method employs fiber optic sensors, while the second utilizes a differential pressure settlement monitoring system. The authors recognize that each method has its own strengths and limitations, underscoring the significance of selecting an appropriate monitoring solution tailored to the specific project's characteristics.

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Accelerating the application of information integration technology, represented by Building Information Modelling (BIM) technology, in green building projects is important to meet the demands of sustainable and high-quality development of the construction sector. According to the development status of BIM technology, the specific application of BIM technology in green building design and construction is first introduced. On this foundation, the importance of the appropriate BIM technology functions to the creation of green buildings is examined. It shows the outstanding advantages of green building projects based on BIM technology. In the architectural design stage, BIM technology can accommodate more architectural details than traditional design, and greatly improve the efficiency of information communication between project parties during the design process. In terms of building construction, building details being planned using BIM technology can greatly reduce the waste of resources. Thus, it can meet the requirements of green construction and provide guarantee for the construction period and quality. This paper can provide technical reference for the BIM-based green building design and construction stage application of similar projects by relevant practitioners and construction enterprises.

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