Phased annular array transducers for ultrasonic guided wave applications

被引：2

作者：

Yan, Fei ^{[1
]}

Borigo, Cody ^{[1
]}

Liang, Yue ^{[1
]}

Koduru, Jaya P. ^{[1
]}

Rose, Joseph L. ^{[1
]}

机构：

[1] FBS Inc, State Coll, PA 16801 USA

来源：

HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS 2011 | 2011年 / 7984卷

关键词：

Ultrasonic guided wave; mode control; annular array; NDE; SHM; INSPECTION; EXCITATION;

D O I：

10.1117/12.882099

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mode and frequency control always plays an important role in ultrasonic guided wave applications. In this paper, theoretical understanding of guided wave excitations of axisymmetric sources on plate structures is established. It is shown that a wave number spectrum can be used to investigate the guided wave excitations of an axisymmetric source. The wave number spectrum is calculated from a Hankel transform of the axial source loading profile. On the basis of the theoretical understanding, phased annular array transducers are developed as a powerful tool for guided wave mode and frequency control. By applying appropriate time delays to phase the multiple elements of an annular array transducer, guided wave mode and frequency tuning can be achieved fully electronically. The phased annular array transducers have been successfully used for various applications. Example applications presented in this paper include phased annular arrays for guided wave beamforming and a novel ultrasonic vibration modal analysis technique for damage detection.

引用

页数：10

共 18 条

[1]

[Anonymous], THESIS PENNSYLVANIA

[2]

Chimenti D.E., 1997, Appl. Mech. Rev., V50, P247, DOI DOI 10.1115/1.3101707

[3]

Gao H, 2006, AIP CONF PROC, V820, P1680

[4]

Giurgiutiu V, 2005, J INTEL MAT SYST STR, V16, P291, DOI 10.1177/1045389X05050106

[5] Selective Lamb mode excitation by piezoelectric coaxial ring actuators [J].