Choosing Phased Array Pitch in Ultrasonic Tomography of Materials with Inhomogeneous Structure
- Авторлар: Kartashev V.1, Kachanov V.1, Sokolov I.1, Kontsov R.1, Fadin A.1
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Мекемелер:
- Moscow Power Engineering Institute
- Шығарылым: Том 54, № 4 (2018)
- Беттер: 223-231
- Бөлім: Acoustic Methods
- URL: https://journals.rcsi.science/1061-8309/article/view/181598
- DOI: https://doi.org/10.1134/S106183091804006X
- ID: 181598
Дәйексөз келтіру
Аннотация
The influence of phased array (PA) pitch on signal/pattern-noise ratio when probing objects with inhomogeneous structure by low-aperture transducers of transverse acoustic waves is considered. A saturation phenomenon has been discovered for small PA pitches. The phenomenon is due to the influence of positive cross correlation between pattern-noise instances at neighboring receiving transducers. The optimum PA pitch has been determined to be approximately 0.5 of the wavelength when probing the object area across the PA and 0.4 of the wavelength when probing areas at the side of the PA. Experimental research has been carried out and proved the validity of the theoretical results.
Авторлар туралы
V. Kartashev
Moscow Power Engineering Institute
Email: kachanovvk@mail.ru
Ресей, Moscow, 111250
V. Kachanov
Moscow Power Engineering Institute
Хат алмасуға жауапты Автор.
Email: kachanovvk@mail.ru
Ресей, Moscow, 111250
I. Sokolov
Moscow Power Engineering Institute
Email: kachanovvk@mail.ru
Ресей, Moscow, 111250
R. Kontsov
Moscow Power Engineering Institute
Email: kachanovvk@mail.ru
Ресей, Moscow, 111250
A. Fadin
Moscow Power Engineering Institute
Email: kachanovvk@mail.ru
Ресей, Moscow, 111250