Lamb wave tomographic imaging system for aircraft structural health assessment

Willi G. Schwarz; Michael E. Read; Matthew J. Kremer; Mark K. Hinders; Barry T. Smith

doi:10.1117/12.339898

28 January 1999 Lamb wave tomographic imaging system for aircraft structural health assessment

Willi G. Schwarz, Michael E. Read, Matthew J. Kremer, Mark K. Hinders, Barry T. Smith

Proceedings Volume 3586, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III; (1999) https://doi.org/10.1117/12.339898
Event: Nondestructive Evaluation Techniques for Aging Infrastructures and Manufacturing, 1999, Newport Beach, CA, United States

Abstract

A tomographic imaging system using ultrasonic Lamb waves for the nondestructive inspection of aircraft components such as wings and fuselage is being developed. The computer-based system provides large-area inspection capability by electronically scanning an array of transducers that can be easily attached to flat and curved surface without moving parts. Images of the inspected area are produced in near real time employing a tomographic reconstruction method adapted from seismological applications. Changes in material properties caused by structural flaws such as disbonds, corrosion, and fatigue cracks can be effectively detected and characterized utilizing this fast NDE technique.

Citation Download Citation

Willi G. Schwarz, Michael E. Read, Matthew J. Kremer, Mark K. Hinders, and Barry T. Smith "Lamb wave tomographic imaging system for aircraft structural health assessment", Proc. SPIE 3586, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III, (28 January 1999); https://doi.org/10.1117/12.339898

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