Phased array beamforming and imaging in composite laminates using guided waves

Zhenhua Tian; Cara A. C. Leckey; Lingyu Yu

doi:10.1117/12.2218954

1 April 2016 Phased array beamforming and imaging in composite laminates using guided waves

Zhenhua Tian, Cara A. C. Leckey, Lingyu Yu

Proceedings Volume 9805, Health Monitoring of Structural and Biological Systems 2016; 980505 (2016) https://doi.org/10.1117/12.2218954
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

This paper presents the phased array beamforming and imaging using guided waves in anisotropic composite laminates. A generic phased array beamforming formula is presented, based on the classic delay-and-sum principle. The generic formula considers direction-dependent guided wave properties induced by the anisotropic material properties of composites. Moreover, the array beamforming and imaging are performed in frequency domain where the guided wave dispersion effect has been considered. The presented phased array method is implemented with a non-contact scanning laser Doppler vibrometer (SLDV) to detect multiple simulated defects at different locations in an anisotropic composite plate. The array is constructed of scan points in a small area rapidly scanned by the SLDV. Using the phased array method, multiple simulated defects at different locations are successfully detected. Our study shows that the guided wave phased array method is a potential effective method for rapid inspection of large composite structures.

Citation Download Citation

Zhenhua Tian, Cara A. C. Leckey, and Lingyu Yu "Phased array beamforming and imaging in composite laminates using guided waves", Proc. SPIE 9805, Health Monitoring of Structural and Biological Systems 2016, 980505 (1 April 2016); https://doi.org/10.1117/12.2218954

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available