Open AccessFOCUSING AND SCANNING PROPERTIES OF ACOUSTIC BEAM IN SOLID USING A FRESNEL ARRAY
Author(s) -
Jian Wu,
Cheng-Hao Wang,
He Qi-Guang
Publication year - 1988
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.37.1575
Subject(s) - optics , planar , fresnel zone , beam (structure) , transducer , weighting , physics , beam pattern , acoustics , materials science , diffraction , computer science , computer graphics (images)
The scanning and focusing of acoustic beam in solid by a Fresnel transducer array of planar structure is significant in many applications.In this paper, the acoustic field distributions of such beam were analysed by using the scalar theory and vector theory respectively. The theoretical analyses have been compared with experimental results.Finally, for the purpose of RF spectrum analysis, the transient time and the weighting of such focusing beam were discussed.