Results 41 to 50 of about 34,542 (304)

Study on Defect Monitoring of Buried Pipelines Based on Piezoelectric Ceramic Transducer

Shiyou jixie, 2022
In order to monitor the defects in buried pipelines accurately,the piezoelectric ceramic transducer was applied to excite longitudinal mode ultrasonic guided waves in buried pipelines.In this paper,the propagation of ultrasonic guided waves in buried ...
Xu Yang, Luo Mingzhang, Du Guofeng
doaj  

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

A Comparative Study on the Accuracy and Resolution of DAS and DORT-MUSIC Damage Imaging Method Based on Ultrasonic Guided Waves

Applied Sciences
The ultrasonic guided wave-based damage imaging methods are often limited in detection accuracy and resolution due to the dispersive characteristics of guided waves.
Chenguang Xu, Ying Luo, Guidong Xu, Sai Zhang, Baiqiang Xu   +4 more
doaj   +1 more source

S-Parameter-Based Defect Localization for Ultrasonic Guided Wave SHM

Aerospace, 2020
In this work, an approach for enabling miniaturized, low-voltage hardware for active structural health monitoring (SHM) based on ultrasonic guided waves is investigated.
Gift Nyikayaramba, Boris Murmann
doaj   +1 more source

An All‐Optical Driven Bio‐Photovoltaic Interface for Active Control of Live Cells

Advanced Functional Materials, EarlyView.
Bio‐photovoltaic Interface (BIO‐PV‐I) for live cell manipulation is presented. BIO‐PV‐I can be activated non‐invasively and remotely to control the spatial motility, adhesion, and morphology of cells adhering to it. BIO‐PV‐I uses a patterned light‐induced electric potential in iron‐doped lithium niobate crystals whose light‐driven and reversible nature,
Lisa Miccio, Martina Mugnano, Valentina Marchesano, Alejandro Calabuig, Zhe Wang, Gennaro Giordano, Francesca Borrelli, Simonetta Grilli, Pietro Ferraro   +8 more
wiley   +1 more source

Ultrasonic Guided Wave Method For Crack Detection In Buried Plastic Pipe

MATEC Web of Conferences, 2016
Plastic pipe are widely used in many fields for the fluid or gaseous product conveyance but basic components of a plastic material made it very sensitive to damage, which requires techniques for detecting damage reliable and efficient.
Wan Hamat Wan Sofian, Ghazali Mohd Fairusham, Priyandoko Gigih   +2 more
doaj   +1 more source

Optimization of ultrasonic guided wave inspection in structural health monitoring based on thermal sensitivity evaluation

Journal of Low Frequency Noise, Vibration and Active Control, 2021
Damage detection in a mechanical structure using ultrasonic guided waves becomes even more problematic when the effect of variation in environmental and operating conditions, such as mechanical noise, temperature, flow rate, inner pressure, etc. is taken
Saqlain Abbas, Fucai Li, Jianxi Qiu, Yanping Zhu, Xiaotong Tu   +4 more
doaj   +1 more source

Computational efficiency of ultrasonic guided wave imaging algorithms [PDF]

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2011
Guided wave imaging techniques employed for structural health monitoring (SHM) can be computationally demanding, especially for adaptive techniques such as minimum variance distortionless response (MVDR) imaging, which requires a matrix inversion for each pixel calculation.
James S, Hall, Jennifer E, Michaels
openaire   +2 more sources

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

Advanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou, Yu Mao, Mengyao Chang, Ziyun Wang, Wenke Xie, Cuizhu Ye, Shanghai Wei, Lars Thomsen, Geoffrey I. N. Waterhouse   +8 more
wiley   +1 more source

Research on Pipeline Damage Imaging Technology Based on Ultrasonic Guided Waves

Shock and Vibration, 2019
Pipeline structures are important structural components that cannot be replaced in actual engineering applications. Damage to a pipeline structure will create substantial safety hazards and economic losses in a project.
Jian He, Chen Zhou, Liang Yang, Xiaodan Sun   +3 more
doaj   +1 more source