Results 31 to 40 of about 24,386 (242)
The high frequency flexural ultrasonic transducer for transmitting and receiving ultrasound in air [PDF]
, 2020 Flexural ultrasonic transducers are robust and low cost sensors that are typically used in industry for distance ranging, proximity sensing and flow measurement.
Dixon, Steve M. +2 more
core +3 more sources
Observer-based tuning of two-inertia servo-drive systems with integrated SAW torque transducers [PDF]
, 2007 This paper proposes controller design and tuning methodologies that facilitate the rejection of periodic load-side disturbances applied to a torsional mechanical system while simultaneously compensating for the observer’s inherent phase delay.
Bingham, Chris +2 more
core +1 more source
High-performance control of dual-inertia servo-drive systems using low-cost integrated SAW torque transducers [PDF]
, 2006 —This paper provides a systematic comparative study of compensation schemes for the coordinated motion control of two-inertia mechanical systems. Specifically, classical proportional–integral (PI), proportional–integral–derivative (PID), and resonance ...
Bingham, Chris +2 more
core +1 more source
Defects Inspection in Wires by Nonlinear Ultrasonic-Guided Wave Generated by Electromagnetic Sensors
Applied Sciences, 2020 Steel wires are widely used as raw materials for spring valves in engines. Considering the quality and safety issues of their structure, there is a demand to develop nondestructive inspection approaches to detect initial damages in steel.
Junpil Park +3 more
doaj +1 more source
Effect of cosmic rays on the resonant gravitational wave detector NAUTILUS at temperature T=1.5 K [PDF]
, 2002 The interaction between cosmic rays and the gravitational wave bar detector NAUTILUS is experimentally studied with the aluminum bar at temperature of T=1.5 K. The results are compared with those obtained in the previous runs when the bar was at T=0.14 K.
A. Marini +22 more
core +3 more sources
Научно-технический вестник информационных технологий, механики и оптикиThe electromagnetic-acoustic method is applied in the control of the electrically conductive products thickness. This method is based on the electrodynamic interaction of eddy currents induced in an electrically conductive material with an external ...
D. S. Ashikhin, A. V. Fedorov
doaj +1 more source
A SVD-Based Signal De-Noising Method With Fitting Threshold for EMAT
IEEE Access, 2021 The electromagnetic acoustic transducer (EMAT) is a powerful and useful non-destructive testing technology for structural health monitoring. However, EMAT has an issue of low efficiency in conversion and its signal is easily affected by noise, which make
Biting Lei +3 more
doaj +1 more source
Articulatory Tradeoffs Reduce Acoustic Variability During American English /r/ Production [PDF]
, 1998 Acoustic and articulatory recordings reveal that speakers utilize systematic articulatory tradeoffs to maintain acoustic stability when producing the phoneme /r/.
Browman C. +11 more
core +2 more sources
AIP Advances, 2018 Knowing propagating properties of an ultrasonic wave can enhance the non-destructive testing techniques in alloy materials field, such as the electromagnetic acoustic transducer techniques, and the piezoelectric ultrasonic transducer techniques.
Yunxin Wu +3 more
doaj +1 more source
Компьютерная оптика, 2023 We discuss issues of classification of operational volumetric and planar surface defects based on the results of complex diagnostics by non-destructive ultrasonic sounding using Rayleigh surface waves generated by an electromagnetic-acoustic transducer ...
N.P. Aleshin +4 more
doaj +1 more source