Article
Construction & Building Technology
M. Laanaiya, A. Zaoui
Summary: The study shows that Calcium Silicate Hydrates exhibit different crack propagation modes on different tensile axes, showing either ductile or brittle characteristics. The piezoelectric properties are affected by strain, but exhibit strong dependence on external pressure.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Chemistry, Analytical
Tasdeeq Sofi, Maria R. Gude, Peter Wierach, Isabel Martin, Eduardo Lorenzo
Summary: To provide reliable data for structural health monitoring of aeronautical components, a new efficient procedure using thermoplastic adhesive films was developed to bond piezoceramic transducers (PCTs) to carbon fiber-reinforced plastic (CFRP) composite structures. The selected thermoplastic films (TPFs) were characterized and found to have similar performance or even outperform the reference adhesive in tests evaluating their melting behavior and bonding strength. The durability and integrity of the bonded transducers were assessed in various aeronautical operational environmental conditions. The results showed that the selected TPFs can withstand the operational and environmental conditions of an aircraft structure, making them a more reliable method of bonding sensors.
Article
Chemistry, Multidisciplinary
Yi Li, Youwei Zhang, Haiwei Dong, Wenjie Cheng, Chaoming Shi, Jiangying Chen
Summary: The study demonstrates that cement-based 1-3 and 2-2 piezoelectric composites exhibit strain rate effects under both quasi-static and dynamic loading, with a non-linear mutation point in sensitivity. The 2-2 composite shows a larger linear range compared to the 1-3 composite, making it advantageous for sensor applications.
APPLIED SCIENCES-BASEL
(2021)
Article
Construction & Building Technology
Xiuhao Li, Rentai Liu, Shucai Li, Chunyu Zhang, Jia Yan, Yankai Liu, Xuebing Sun, Peisen Su
Summary: This paper investigated the properties and mechanism of grouting slurry and hardened paste body exposed to seawater using the grouting method to maintain the cracks of subsea tunnel lining concrete. The self-healing capacity was achieved by incorporating Urea-Formaldehyde/Epoxy (UF/E) microcapsules in the grouting materials. The results showed that the microcapsules had a negative effect on the mechanical properties and porosity, and the self-healing capacity varied with the dosage and pre-damage level.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Materials Science, Ceramics
Scarlet Kong, Alain Moriana, Shujun Zhang, Stefano Checchia, John E. Daniels
Summary: Crystallographic texturing of ferroelectrics can enhance their piezoelectric response. This study observed the ferroelastic self-poling effect in a crystallographically textured ceramic. The introduction of BaTiO3 platelet templates induced the alignment of ferroelastic domains. The in-situ high-energy x-ray diffraction revealed the strain mechanisms and showed a contrast in strain magnitudes between the textured and untextured ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Construction & Building Technology
Ivan Navarrete, Juan Valdes, Mauricio Lopez, Felipe Vargas
Summary: The study found that the use of industrial byproducts as partial replacement for pozzolanic blended cement increases the reactivity and compressive strength of the cement. However, the environmental impact depends on the replacement level, compressive strength, and CO2 footprint of each supplementary cementitious material (SCM).
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiaoting Zhang, Jose Villafuerte, Vincent Consonni, Jean-Fabien Capsal, Pierre-Jean Cottinet, Lionel Petit, Minh-Quyen Le
Summary: Due to the excellent coupling between piezoelectric and semiconducting properties of zinc oxide nanowires, ZnO NW-based structures show great potential in various applications. The proposed piezoelectric composite consisting of vertically aligned ZnO NW arrays and an insulating polymer matrix has been optimized for enhanced piezoelectric sensitivity and high sensing abilities. Experimentally and theoretically, the developed material demonstrates promising results for medical applications, particularly for the FFR technique.
Article
Automation & Control Systems
Salar Hatam, Saber Mohammadi, Akram Khodayari
Summary: The mechanical vibration energy harvesting method using multi-switch circuit with adaptive inductance aims to maximize harvested energy by connecting the vibrating piezoelectric element to a special interface circuit. Compared to the standard simple resistive circuit, this new method can achieve 2 to 10 times higher harvested power in different frequency ranges, demonstrating significant improvement in energy collection efficiency.
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
(2021)
Article
Chemistry, Physical
Wanghong Zeng, Weili Deng, Tao Yang, Shenglong Wang, Yue Sun, Jieling Zhang, Xiarong Ren, Long Jin, Lihua Tang, Weiqing Yang
Summary: A self-powered piezoelectric sensor based on a gradient carbon nanotube/polyvinylidene fluoride composite was designed to monitor the interactions between the ball and the shoe. The sensor demonstrated enhanced force-electric coupling with an excellent sensitivity and durability, allowing for real-time acquisition of kick position and contact force for personalized soccer training.
Article
Materials Science, Multidisciplinary
Yongkuan Li, Hongsen Lin, Jianrong Lin, Cheng Zhou, Aixin Luo, Jiachen Yang, Jieyu Zhang, Zhixiang Hong, Xueyan Hou, Peng Xiao, Bingfeng Fan
Summary: Linear piezoelectric materials, specifically undoped ZnO and vanadium-doped ZnO (V-ZnO), were compared for pressure sensing applications. The study showed that the linear piezoelectric ZnO sensor exhibited one-to-one linear correlation between applied pressure and voltage signals, indicating its advantage over the 'sail-like' voltage signals of the ferroelectric V-ZnO sensor. Additionally, the linear piezoelectric ZnO sensor demonstrated superior thermal stability up to 450 degrees C, while the ferroelectric V-ZnO sensor's sensing properties degraded at 150 degrees C.
MATERIALS & DESIGN
(2023)
Article
Engineering, Electrical & Electronic
R. Rianyoi, R. Potong, A. Ngamjarurojana, A. Chaipanich
Summary: Lead-free piezoelectric ceramic BNT-BT/PC composites were fabricated and investigated for sensor applications in structural health monitoring. The optimal ceramic content for acoustic impedance matching and piezoelectric performance was found to be approximately 40-60 vol.%. The composites showed good compatibility with concrete structures and potential for use as sensors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Construction & Building Technology
Yipu Guo, Wengui Li, Wenkui Dong, Zhiyu Luo, Fulin Qu, Fei Yang, Kejin Wang
Summary: Different dosages of carbon black were used to manufacture cost-effective and highly sensitive polypropylene fiber cement-based sensors. The self-sensing performance of the sensors was assessed under different loading conditions. Additionally, strain hardening characteristics and damage sensing ability were explored, providing potential applications in detecting strain, deformation, crack, and damage in concrete infrastructure.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Environmental Sciences
Juanlong Li, Xiaolu Liu, Guixia Zhao, Zhixin Liu, Yawen Cai, Suhua Wang, Chi Shen, Baowei Hu, Xiangke Wang
Summary: With the development of industrialization and agriculture, environmental problems and water pollution have become a concern for society. Piezoelectric catalysis technology using piezoelectric materials can effectively degrade water pollutants by improving the separation of electron-hole pairs. The applications of piezoelectric materials in water treatment and environmental remediation were discussed, including organic pollutant degradation, removal of heavy metal ions, bacteria disinfection, and H2 generation through water splitting.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Materials Science, Ceramics
Guohao Li, Gang Tian, Yuzhi Zhai, Juan Du, Le Zhao, Weijie Kuai, Yongfeng Lai, Minglei Zhao, Limei Zheng
Summary: This article reports on the fabrication of highly textured CaBi4Ti4O15 BLSF ceramics using spark plasma sintering technique. The textured samples exhibit excellent piezoelectric properties, thermal stability, and high electrical resistivity, making them potential candidates for high-temperature piezoelectric sensor or detector applications.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Tetsuro Yanaseko, Hiroshi Sato, Fumio Narita, Hiroshi Asanuma
Summary: To evaluate the suitability of metal-core piezoelectric fiber/aluminum composites for structural health monitoring, their output characteristics and mechanical properties were evaluated in large strain regions exceeding 10%. Tensile vibration tests were adapted to the composites to evaluate the output charges in large strains; simultaneously, the mechanical properties were evaluated. It was found that the fracture behavior of the fiber and its output were influenced by the mechanical load, fragment length, and core rupture, and the residual stress had a significant effect on the mechanical properties.
MATERIALS TODAY COMMUNICATIONS
(2023)