Location

Brunswick, ME

Start Date

1-1-1990 12:00 AM

Description

The emergence of plate waves as a functional approach to the evaluation of thin structures, especially composite plates, has been gradual and steady. This statement may be supported by the increasing attention, in the recent publications[1,2], focussed on leaky Lamb waves in composites. The generation and the characteristics of plate wave modes, although using a quasi-local technique, has already been established and the dispersion relationships are being studied in detail, especially for isotropic cases. In practice, the critical drawbacks which have been detrimental in the widespread deployment of these methods are the complicated mode behavior and a lack of complete understanding of the mechanics involved. Thus, to fully exploit the plate waves, it is imperative that the physics of wave propagation within the thin composite structures be fully explored using experimental methods and be backed by a very strong theoretical basis in order to obtain NDE guidelines for fiber reinforced composite materials.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

9B

Chapter

Chapter 7: Engineered Materials

Section

Defects in Composites

Pages

1505-1512

DOI

10.1007/978-1-4684-5772-8_193

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Guided Plate Wave Potential for Damage Analysis of Composite Materials

Brunswick, ME

The emergence of plate waves as a functional approach to the evaluation of thin structures, especially composite plates, has been gradual and steady. This statement may be supported by the increasing attention, in the recent publications[1,2], focussed on leaky Lamb waves in composites. The generation and the characteristics of plate wave modes, although using a quasi-local technique, has already been established and the dispersion relationships are being studied in detail, especially for isotropic cases. In practice, the critical drawbacks which have been detrimental in the widespread deployment of these methods are the complicated mode behavior and a lack of complete understanding of the mechanics involved. Thus, to fully exploit the plate waves, it is imperative that the physics of wave propagation within the thin composite structures be fully explored using experimental methods and be backed by a very strong theoretical basis in order to obtain NDE guidelines for fiber reinforced composite materials.