Results 101 to 110 of about 32,854 (304)
Characterization of Ultrasonic Immersion Transducers
NDT & E International, 1990 In any ultrasonic NDE experiment, the distributed field properties of the transducer involved represent an important aspect of the overall measurement process. The normal velocity profile across the active face of the transducer is typically used to characterize these properties.
Bennink, David, Pate, Anna
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Advanced Materials Technologies, EarlyView.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +8 more
wiley +1 more source
Pulsed-electromagnet EMAT for high temperature applications [PDF]
This thesis is concerned with the design and implementation of an Electromagnetic Acoustic Transducer (EMAT) intended for high temperature ultrasonic applications; which benefits from a novel approach using a pulsed current electromagnet (PE) and a ...
Hernández Valle, José Francisco
core
Signal processing methods for defect detection in multi-wire helical waveguides using ultrasonic guided waves [PDF]
, 2015 This thesis was submitted for the degree of Master of Philosophy and awarded by Brunel University LondonNon-Destructive Testing of industrial components carries vital importance, both financially and safety-wise.
Yucel, Mehmet Kerim
core
A Finite Element Approach to Modelling Fractal Ultrasonic Transducers [PDF]
, 2014 Piezoelectric ultrasonic transducers usually employ composite structures to improve their transmission and reception sensitivities. The geometry of the composite is regular with one dominant length scale and, since these are resonant devices, this ...
Algehyne, Ebrahem A. +3 more
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Piezoelectric Energy Harvesting with an Ultrasonic Vibration Source
Actuators, 2019 A piezoelectric energy harvester was developed in this paper. It is actuated by the vibration leakage from the nodal position of a high-power ultrasonic cutting transducer.
Tao Li, Pooi See Lee
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Acoustographic evaluation of ultrasonic transducers
NDT & E International, 1989 In order to have confidence in the nondestructive evaluation data generated by an ultrasonic system, it is important to establish the adequacy and reliability of the ultrasonic transducer employed in the system. This is usually accomplished by characterizing the electro-mechanical properties and the radiated acoustic field distribution of the ...
Sandhu, J., Thomas, R., Jensen, C.
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Recent Advances of Slip Sensors for Smart Robotics
Advanced Materials Technologies, EarlyView.This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang +8 more
wiley +1 more source
Magnetic phase transitions in Gd64Sc36 studied using non-contact ultrasonics [PDF]
, 2013 The speed and attenuation of ultrasound propagation can be used to determine material properties and identify phase transitions. Standard ultrasonic contact techniques are not always convenient due to the necessity of using couplant; however, recently ...
Edwards, R. S. (Rachel Sian) +3 more
core +1 more source
Propagation Laws of Ultrasonic Continuous Signals at the Transmitting Transducer–Soil Interface
AgricultureUltrasonic detection is one of the main methods for information detection and has advantages in soil detection. Ultrasonic signals attenuate in soil, resulting in unique propagation laws.
Zhinan Wang +5 more
doaj +1 more source