The Effect of Amplitude Modulation on the Axial Resolution of Doppler-Based Ultrasonic Topography Measurement

Javad RezaNejad Gatabi, Sayantan Das, Farshid Forouzbakhsh

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

1 Citationer (Scopus)

Abstrakt

Ultrasonic Doppler-based systems for surface topography measurements are attractive alternatives to the transit-time-based methods. Sensors used in Doppler systems are less dependent on the speed of the sound in air, although contemporary Doppler measurement systems are sensitive to the amplitude variation of the received signal. Amplitude variation significantly affects the measurement accuracy when the surface axial displacement range is comparable with the ultrasonic wavelength. This paper presents a theoretical and experimental study of the effect of amplitude modulation on the performance of the Doppler measurement techniques. A modified Doppler measurement system that significantly improves the measurement accuracy is also presented. The fabricated sensor has 72-μm measurement accuracy using 40-kHz transducers. This technique can also be employed in cost-effective displacement measurement applications that require high axial resolution.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Instrumentation and Measurement
Vol/bind65
Udgave nummer12
Sider (fra-til)2780 - 2786
Antal sider7
ISSN0018-9456
DOI
StatusUdgivet - dec. 2016

Fingeraftryk Dyk ned i forskningsemnerne om 'The Effect of Amplitude Modulation on the Axial Resolution of Doppler-Based Ultrasonic Topography Measurement'. Sammen danner de et unikt fingeraftryk.

Citationsformater