TY - GEN
T1 - Investigation of ultrasonic feature guided waves for the monitoring of structural bends
AU - Yu, Xudong
AU - Manogharan, Prabhakaran
AU - Fan, Zheng
AU - Rajagopal, Prabhu
N1 - Publisher Copyright:
Copyright © 2015 by DEStech Publica tions, Inc.
PY - 2015
Y1 - 2015
N2 - This paper investigates the inspection and monitoring structural bends using a special ultrasonic bend-guided wave, which concentrates the energy in and around the bend. Modal studies are carried out using the Semi-Analytical Finite Element (SAFE) method, while 3D finite element (FE) simulations are used to gain visualization of results and also obtain cross-validation. Our studies reveal, perhaps for the first time, the possibility of bend-guided modes of the shear-horizontal (SH) family, in addition those of the Rayleigh-Lamb family reported earlier in the literature. This mode has attractive properties including low attenuation and limited dispersion. We investigate effects of plate thickness and bend radius on the physics of FGW in bends, arguing the strong role of geometry and curvature effects in causing mode confinement. Experiments have also been carried out to validate the existence of such bend-guided mode.
AB - This paper investigates the inspection and monitoring structural bends using a special ultrasonic bend-guided wave, which concentrates the energy in and around the bend. Modal studies are carried out using the Semi-Analytical Finite Element (SAFE) method, while 3D finite element (FE) simulations are used to gain visualization of results and also obtain cross-validation. Our studies reveal, perhaps for the first time, the possibility of bend-guided modes of the shear-horizontal (SH) family, in addition those of the Rayleigh-Lamb family reported earlier in the literature. This mode has attractive properties including low attenuation and limited dispersion. We investigate effects of plate thickness and bend radius on the physics of FGW in bends, arguing the strong role of geometry and curvature effects in causing mode confinement. Experiments have also been carried out to validate the existence of such bend-guided mode.
UR - https://www.scopus.com/pages/publications/84945548796
U2 - 10.12783/shm2015/83
DO - 10.12783/shm2015/83
M3 - 会议稿件
AN - SCOPUS:84945548796
T3 - Structural Health Monitoring 2015: System Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM 2015
SP - 649
EP - 656
BT - Structural Health Monitoring 2015
A2 - Chang, Fu-Kuo
A2 - Kopsaftopoulos, Fotis
PB - DEStech Publications
T2 - 10th International Workshop on Structural Health Monitoring: System Reliability for Verification and Implementation, IWSHM 2015
Y2 - 1 September 2015 through 3 September 2015
ER -