Results 21 to 30 of about 2,708,141 (286)

Supershear Rayleigh wave imaging for quantitative assessment of biomechanical properties of brain using air-coupled optical coherence elastography

APL Bioengineering, 2023
Recently, supershear Rayleigh waves (SRWs) have been proposed to characterize the biomechanical properties of soft tissues. The SRWs propagate along the surface of the medium, unlike surface Rayleigh waves, SRWs propagate faster than bulk shear waves ...
Yirui Zhu, Jiulin Shi, Tomas E. Gomez Alvarez-arenas, Chenxi Li, Haohao Wang, Hongling Cai, Dong Zhang, Xingdao He, Xiaoshan Wu   +8 more
doaj   +1 more source

Adaptive technologies in ultrasonic testing

e-Journal of Nondestructive Testing, 2023
These instructions have been prepared to assist authors in the preparation of papers for reproduction in Conference proceedings to be provided to delegates.
Fernando Ojeda
doaj   +1 more source

Propagation and Attenuation Characteristics of an Ultrasonic Beam in Dissimilar-Metal Welds

Sensors, 2020
Ultrasonic inspection of welds joining dissimilar metals in nuclear power plants has proven to be a challenge, because the ultrasonic waves are subject to diffraction, distortion, scattering, and noise.
Young-In Hwang, Deokyong Sung, Hak-Joon Kim, Sung-Jin Song, Ki-Bok Kim, Sung-Sik Kang   +5 more
doaj   +1 more source

Non-Contact Laser Ultrasound Detection of Internal Gas Defects in Lithium-Ion Batteries

Sensors
Non-contact laser ultrasonic detection technology provides an innovative solution for evaluating the internal conditions of lithium-ion batteries (LIBs), offering significant advantages in gas defect assessment and structural defect identification.
Dongxia Tang, Chenguang Xu, Guidong Xu, Sen Cui, Sai Zhang   +4 more
doaj   +1 more source

Deep Learning-Based Geometric Optimization of CMUT Phononic Crystals for SAW Control

Applied Sciences
Capacitive micromechanical ultrasonic transducers (CMUTs), as microelectromechanical systems (MEMS) devices, have broad application prospects in ultrasonic imaging and sensing.
Gang Chen, Huizi He, Chenguang Xu, Guidong Xu, Sai Zhang   +4 more
doaj   +1 more source

Onsite strength determination for early-opening decision making of high early strength concrete pavement

Journal of Traffic and Transportation Engineering (English ed. Online), 2023
High early strength (HES) concrete pavements are commonly opened to traffic within the first 24 h after construction, making early-opening decisions critical for pavement quality and traffic operations. Currently, most state departments of transportation
Katelyn Kosar, Lucio Salles de Salles, Naser Pourakbar Sharifi, Julie Vandenbossche, Lev Khazanovich   +4 more
doaj   +1 more source

Enhanced Lateral Resolution in Acoustic Imaging: From High- to Super-Resolution

Sensors
Acoustic imaging, especially ultrasound, underpins a wide range of applications from non-destructive evaluation to medical and materials analysis, yet its performance is ultimately constrained by lateral resolution.
Zheng Xia, Huizi He, Zixing Zhou, Shanshan Pan, Sai Zhang   +4 more
doaj   +1 more source

Optimization Design of CMUT Sensors with Broadband and High Sensitivity Characteristics Based on the Genetic Algorithm

Sensors
In this study, we propose a method for optimizing the design of CMUT sensors using genetic algorithms. Existing CMUT sensors face frequency response and sensitivity limitations, necessitating optimization to enhance their sensing performance. Traditional
Sai Zhang, Wentao Lu, Ailing Wang, Huizi He, Renxin Wang, Wendong Zhang   +5 more
doaj   +1 more source

Ultrasonic resonance of defects for nonlinear acoustic imaging and NDT [PDF]

, 2014
The effect of local defect resonance (LDR) on the nonlinear ultrasonic response of defects is studied and applied for enhancement of sensitivity of nonlinear ultrasonic ...
Igor Solodov
core   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source