Results 81 to 90 of about 1,899,314 (382)
Applied Sciences, 2021 The use of pulse-compression in ultrasonic non-destructive testing has assured, in various applications, a significant improvement in the signal-to-noise ratio.
M. Rizwan +4 more
semanticscholar +1 more source
Nondestructive Testing of Welded Composite Metal Foams
Advanced Engineering Materials, EarlyView.X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva +2 more
wiley +1 more source
Frontiers in Mechanical EngineeringHigh-voltage cable terminal lead seals may develop defects such as holes, cracks, or delamination due to substandard installation quality or external forces during operation.
Peng Ziping +5 more
doaj +1 more source
Российский технологический журнал, 2018 Application of a lens multi-element acoustic microscope for the visualization and quantitative characterization of small discontinuities with dimensions of the spatial resolution level is considered.
S. A. Titov, A. N. Bogachenkov
doaj +1 more source
Annular arrays for novel ultrasonic measurement techniques [PDF]
Journal of Sensors and Sensor Systems, 2016 Abstract. The paper shows how the precise knowledge of the sound field of an ultrasonic annular array can contribute to the development of novel measurement techniques. Emphasis is placed on (a) a non-invasive method for sound velocity measurements in fluids using the echo signals from scattering p]articles, (b) a non-invasive method for the combined ...
M. Wolf +3 more
openaire +3 more sources
An Investigation of Ultrasonic-Assisted Electrochemical Machining of Micro-Hole Array
Processes, 2021 This paper uses an ultrasonic vibration-integrated array electrode for 301 stainless steel micro-hole drilling. The influence of machining parameters such as ultrasonic vibration amplitude, working voltage, pulse-off time and electrode feed rate on ...
Zhengchao Shen, H. Tsui
semanticscholar +1 more source
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 +7 more
wiley +1 more source
Design of Excitation Circuit for Logging While Drilling Ultrasonic Array Logging Tool
Cejing jishuThrough the wellbore reflection characteristics obtained by ultrasonic array logging tool while drilling, the wellbore profile is studied in real time, and the fractured formation information is obtained.
WANG Yining +5 more
doaj +1 more source
Sensors, 2017 For improvement of the efficiency of air-coupled ultrasonic transducers PMN-32%PT piezoelectric crystals which possess very high piezoelectric properties may be used.
Rymantas J. Kazys +2 more
doaj +1 more source
Acoustofluidics 17: theory and applications of surface acoustic wave devices for particle manipulation [PDF]
, 2012 In this paper, number 17 of the thematic tutorial series “Acoustofluidics – exploiting ultrasonic standing waves, forces and acoustic streaming in microfluidic systems for cell and particle manipulation” – we present the theory of surface acoustic waves (
Gedge, Michael, Hill, Martyn
core +1 more source