TY - GEN
T1 - Effect of a fluid wedge on the wave propagation along a fluid-solid interface
T2 - 6th International Workshop on Structural Health Monitoring: Quantification, Validation, and Implementation, IWSHM 2007
AU - Dao, C. M.
AU - Das, S.
AU - Banerjee, S.
AU - Kundu, Tribikram
N1 - Publisher Copyright:
Copyright © 2007 by DEStech Publications, Inc. All Rights Reserved.
PY - 2007
Y1 - 2007
N2 - Interaction between a bounded ultrasonic beam and a liquid wedge over a solid half-space is studied. A semi-analytical technique called Distributed Point Source Method (DPSM) is adopted for modeling the ultrasonic field in a wedge shaped fluid structure on a solid half space. This study is important for analyzing the ultrasonic waves used for the nondestructive inspections of partially immersed structures and for studying the effect of underwater ultrasonic or acoustic wave experiments on marine lives near the shore. The problem geometry considers a bounded acoustic beam striking a fluid-solid interface between a fluid wedge and a solid half-space. Solution of this problem is beyond the scope of the currently available analytical methods when the beam is bounded. However, it is important to model the bounded beams because in all underwater communications and inspections bounded beams are used. Currently only numerical method [Boundary Element Method (BEM) or Finite Element Method (FEM)] based packages (e.g. PZFlex) are in principle capable of modeling ultrasonic fields in such structures. However, these packages are not very accurate and are very CPU intensive for high frequency ultrasonic problems. At high frequencies FEM and BEM based packages require huge amount of computation memory and time for their executions that DPSM technique can avoid. Effect of the angle variation between the fluid-solid interface and the fluid wedge on the wave propagation characteristics is studied.
AB - Interaction between a bounded ultrasonic beam and a liquid wedge over a solid half-space is studied. A semi-analytical technique called Distributed Point Source Method (DPSM) is adopted for modeling the ultrasonic field in a wedge shaped fluid structure on a solid half space. This study is important for analyzing the ultrasonic waves used for the nondestructive inspections of partially immersed structures and for studying the effect of underwater ultrasonic or acoustic wave experiments on marine lives near the shore. The problem geometry considers a bounded acoustic beam striking a fluid-solid interface between a fluid wedge and a solid half-space. Solution of this problem is beyond the scope of the currently available analytical methods when the beam is bounded. However, it is important to model the bounded beams because in all underwater communications and inspections bounded beams are used. Currently only numerical method [Boundary Element Method (BEM) or Finite Element Method (FEM)] based packages (e.g. PZFlex) are in principle capable of modeling ultrasonic fields in such structures. However, these packages are not very accurate and are very CPU intensive for high frequency ultrasonic problems. At high frequencies FEM and BEM based packages require huge amount of computation memory and time for their executions that DPSM technique can avoid. Effect of the angle variation between the fluid-solid interface and the fluid wedge on the wave propagation characteristics is studied.
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M3 - Conference contribution
AN - SCOPUS:84945185574
T3 - Structural Health Monitoring 2007: Quantification, Validation, and Implementation - Proceedings of the 6th International Workshop on Structural Health Monitoring, IWSHM 2007
SP - 919
EP - 926
BT - Structural Health Monitoring 2007
A2 - Chang, Fu-Kuo
PB - DEStech Publications
Y2 - 11 September 2007 through 13 September 2007
ER -