Location

Seattle, WA

Start Date

1-1-1996 12:00 AM

Description

Fatigue cracks have been found to initiate and grow in the radial direction in many of the annulus shaped components in aging helicopters. Those include some of the most critical components such as the rotor hub, connecting links and pitch shaft, etc. At the present time, detection of such radial fatigue cracks relies mostly on visual inspection. A more systematic, automated, and efficient method to detect these cracks must be developed.

Volume

15A

Chapter

Chapter 1: Standard Techniques

Section

UT Guided Wave Propagation

Pages

169-176

DOI

10.1007/978-1-4613-0383-1_21

Language

en

File Format

application/pdf

Share

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Jan 1st, 12:00 AM

Dispersion of Guided Circumferential Waves in a Circular Annulus

Seattle, WA

Fatigue cracks have been found to initiate and grow in the radial direction in many of the annulus shaped components in aging helicopters. Those include some of the most critical components such as the rotor hub, connecting links and pitch shaft, etc. At the present time, detection of such radial fatigue cracks relies mostly on visual inspection. A more systematic, automated, and efficient method to detect these cracks must be developed.