Results 111 to 120 of about 24,386 (242)
Characterization of noncontact piezoelectric transducer with conically shaped piezoelement [PDF]
The characterization of a dynamic surface displacement transducer (IQI Model 501) by a noncontact method is presented. The transducer is designed for ultrasonic as well as acoustic emission measurements and, according to the manufacturer, its ...
Ochi, Simeon C. U. +1 more
core +1 more source
CDS solid state phase insensitive ultrasonic transducer [PDF]
, 1980 A phase insensitive ultrasonic transducer which includes a CdS crystal that is annealed for a selected period of time and at a selected temperature to provide substantially maximum acoustic attenuation at the operating frequency of the transducer is ...
Heyman, J. S.
core +1 more source
Intelligent Operator‐Independent Flexibility in Robotic Non‐Destructive Evaluation
Advanced Intelligent Systems, EarlyView.Non‐destructive evaluation of high‐value components remains a manufacturing bottleneck due to rigid robotic calibration and fixturing. This study presents a flexible, adaptable system integrating 3D vision and force‐position control with a collaborative KUKA LBR robot. The geometry‐agnostic system enables pose‐independent ultrasonic inspection, detects
Amine Hifi +11 more
wiley +1 more source
Semi‐autonomous Navigation of Magnetic Microcarriers for Knee Cartilage Regeneration
Advanced Intelligent Systems, EarlyView.Autonomous navigation of magnetic microcarriers in complex 3D environments is investigated through a semi‐autonomous strategy integrating magnetic actuation with monocular visual feedback. Real‐time global tracking is achieved via radio‐frequency‐based localization and depth estimation, while model‐based computation determines optimal steering forces ...
Kim Tien Nguyen +3 more
wiley +1 more source
BMEMat, EarlyView.Extracellular vesicles (EVs) derived from stem cells show promise for applications in regenerative medicine, but their scalability and yield remain challenges. This review explores the approaches for biophysical modulations within cell niches on EV properties, discusses the current clinical application of EVs, and provides an outlook on the existing ...
Yang Xu +9 more
wiley +1 more source
Advances in Electrical and Electronic Engineering, 2004 The paper deals with the basic principles of operation and with the utilization possibilities of phased array (PA) in materials nondestructive testing (NDT).
Dagmar Faktorova, Klara Capova, Ivo Cap
doaj
Current Status and Development Trend of Look-Ahead While Drilling Technology
Shiyou jixieAs one of the key emerging technologies in the field of logging while drilling （LWD）， the look-ahead wile drilling （LAWD） technology can perform real-time detection on undrilled formation in front of the bit， effectively reducing the risk of drilling ...
Yan Sen +5 more
doaj +1 more source
Recent advances in boosting interfacial bubble dynamics with external fields
Droplet, EarlyView.External physical fields, including acoustic, magnetic, thermal, mechanical, and optical stimuli, accelerate the entire bubble‐dynamics sequence of nucleation, growth, and detachment. Abstract The efficiency of industrial electrocatalytic reactions depends not only on generating gaseous products but also on their detachment from the catalyst surface ...
Wenlu Xie +5 more
wiley +1 more source
International Journal of Occupational Hygiene, 2021 Ultrasonic testing (UT) for medical examination as well as metal flaw detection is a popular method. From the beginning of ultrasonic testing Mulhauser in 1931 lot of new things and technologies emerged in UT testing.
Mahmud Hasan
doaj
Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source