Uniform circular array for structural health monitoring of composite structures

Tadeusz Stepinski; Marcus Engholm

doi:10.1117/12.785371

10 April 2008 Uniform circular array for structural health monitoring of composite structures

Tadeusz Stepinski, Marcus Engholm

Proceedings Volume 6935, Health Monitoring of Structural and Biological Systems 2008; 69352A (2008) https://doi.org/10.1117/12.785371
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

Phased array with all-azimuth angle coverage would be extremely useful in structural health monitoring (SHM) of planar structures. One method to achieve the 360° coverage is to use uniform circular arrays (UCAs). In this paper we present the concept of UCA adapted for SHM applications. We start from a brief presentation of UCA beamformers based on the principle of phase mode excitation. UCA performance is illustrated by the results of beamformer simulations performed for the narrowband and wideband ultrasonic signals. Preliminary experimental results obtained with UCA used for the reception of ultrasonic signals propagating in an aluminum plate are also presented.

Citation Download Citation

Tadeusz Stepinski and Marcus Engholm "Uniform circular array for structural health monitoring of composite structures", Proc. SPIE 6935, Health Monitoring of Structural and Biological Systems 2008, 69352A (10 April 2008); https://doi.org/10.1117/12.785371

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