Non-Destructive Inspection of Metal Matrix Composites Using Guided Waves.

Track shoes made of Metal Matrix Composites (MMC) are light in weight, and resist high temperature and wear. Defects such as crack, porosity and disbond often occur both in-process and in service. Ultrasonic guided waves (Lamb wave, Rayleigh wave, etc.) combined with advanced signal classification algorithms (Physics based feature extraction and Support Vector Machines) demonstrated great potential for various defect inspection, classification and sizing. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]