Modeling of elastic wave scattering by a hole in a half-space

Samik Das; Sourav Banerjee; Tribikram Kundu

doi:10.1117/12.774422

10 April 2008 Modeling of elastic wave scattering by a hole in a half-space

Samik Das, Sourav Banerjee, Tribikram Kundu

Proceedings Volume 6935, Health Monitoring of Structural and Biological Systems 2008; 69350K (2008) https://doi.org/10.1117/12.774422
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

In NDT (nondestructive testing) often a side-drilled hole (circular cavity) is used for calibration. In this paper scattering of ultrasonic waves by a circular hole is studied. The ultrasonic wave is generated by a transducer of finite dimension. A newly developed semi-analytical technique called Distributed point source method (DPSM) has been adopted to solve this problem. Even though this is an old problem the complete field of the scattered waves in presence of a hole in a half space near its boundary has not been shown in the literature yet. The scattered ultrasonic field (stress and displacement) is computed using DPSM and presented in the paper. Solution of this problem will also help us to understand the distortion of the ultrasonic field in the half-space due to the presence of a circular anomaly (cavity or inclusion) which plays an important role in structural health monitoring.

Citation Download Citation

Samik Das, Sourav Banerjee, and Tribikram Kundu "Modeling of elastic wave scattering by a hole in a half-space", Proc. SPIE 6935, Health Monitoring of Structural and Biological Systems 2008, 69350K (10 April 2008); https://doi.org/10.1117/12.774422

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