Effects of Delamination on Guided Waves in a Symmetric Laminated Composite Beam

Numerical Determination of Delamination Onset in Laminated Symmetric DCB Specimen

In this study, a novel numerical method is proposed for determination of mode-I interlaminar fracture toughness, GIc, in multi-directional (MD) double cantilever beam (DCB) specimens using fracture properties of unidirectional DCB specimens. Two factors, β and Dc are defined to minimize the undesirable effects on strain energy release rate. β describes the difference between maximum and average...

Locating Delamination in Composite Laminated Beams Using the Zero-Order Mode of Lamb Waves

Effect of Stress Waves on Laminated Composite Plates

Abstract-Several types of waves in a layered composite material were examined. In order to obtain explicit approximate solutions. a perturbation method was used. This approach views the nonhomogeneous layering as a perturbation on a homogeneous but anisotropic solid. For propagation normal to the direction of layering, it was necessary to include the second-order perturbation terms to get quali...

Experimental and numerical study of delamination detection in a WGF/epoxy composite plate using ultrasonic guided waves and signal processing tools

Reliable damage detection is one of the most critical tasks in composite plate structures. Ultrasonic guided waves are acknowledged as an effective way of structural health mo...

Fatigue Delamination Monitoring in Composite Structures by Guided Wave Method

This paper presents an effective parameter for fatigue delamination detection and monitoring by guided wave method. The finite element analysis and the Time of Flight parameter defined as a time between guided wave interrogated by an actuator and first wave captured by a sensor was introduced to observe the behaviour of the defected structure. The relationship between ToF and delamination size ...