Various Types of Defects Detection in Flat and Curved Laminated Composite Plates Using Nonintrusive Lamb Wave System

Abstract Composite materials are widely used in aerospace industries due to their light weight, strength, and various other desired properties. However, they susceptible defects occurring during the manufacturing process or service. Typical include porosity, wrinkles, delamination. Nondestructive means of detection at any stage great importance ensure quality safety composite structures. A nonintrusive removable Lamb wave system accompanied methodology that is not material dependent presented this paper detect types typical laminated plates, flat curved. Through multidimensional data acquisition processing, abnormality waves caused by captured inspection images. The methodologies demonstrated two cases: delamination a curved plate wrinkles plate. Overall, results show using piezoelectric transducer laser vibrometer can be for plates.