Event Title

Modeling and Experiments on the Propagation of Transient Ultrasound in a Thick Annulus

Location

Snowbird, UT, USA

Start Date

1-1-1999 12:00 AM

Description

Fatigue cracks often develop on the inner surface of annular components such as collars. In some instances, these cracks have been identified as the cause of catastrophic failures. Traditional ultrasonic inspection of such parts can be difficult and time- consuming. Instead, circumferential waves guided in the annular structure interrogate at once the entire path between the source and the receiver thus enabling for fast inspection of relatively inaccessible regions. However, the modal complexity of the ultrasonic signals is a challenge which must be addressed before practical implementation of the technique. Specifically, it is important to control and select the desired modes of propagation in the waveguide [1–4].The approach taken in this paper is analytical, numerical and experimental.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

18A

Chapter

Chapter 1: Elastic Waves and Ultrasonic Techniques

Section

Guided Waves and Applications

Pages

231-238

DOI

10.1007/978-1-4615-4791-4_28

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Modeling and Experiments on the Propagation of Transient Ultrasound in a Thick Annulus

Snowbird, UT, USA

Fatigue cracks often develop on the inner surface of annular components such as collars. In some instances, these cracks have been identified as the cause of catastrophic failures. Traditional ultrasonic inspection of such parts can be difficult and time- consuming. Instead, circumferential waves guided in the annular structure interrogate at once the entire path between the source and the receiver thus enabling for fast inspection of relatively inaccessible regions. However, the modal complexity of the ultrasonic signals is a challenge which must be addressed before practical implementation of the technique. Specifically, it is important to control and select the desired modes of propagation in the waveguide [1–4].The approach taken in this paper is analytical, numerical and experimental.