Event Title

Characterization of Layered Cylindrical Structures Using Cylindrical Waves

Location

Snowbird, UT, USA

Start Date

1-1-1999 12:00 AM

Description

A major problem for the oil, gas and petro-chemical industries is corrosion in pipelines. Wall thinning and corrosion pits can occur both from the inside and the outside of pipe walls. A large proportion of these pipelines are usually insulated, that makes the detection and evaluation more difficult by conventional NDE techniques. Great progress is being made on the use of ultrasonic guided waves in pipelines for detection and classification [1–7]. Excellent propagation for a long distance under insulation and sensitivity to certain defects make guided waves possible for practical usefulness. However, ultrasonic guided wave propagation and reflection in pipelines are still not completely understood. To quantitatively evaluate thin layered pipelines, especially with small radius, those technique may lose accuracy. An incident wave interacting with a curved structure may give rise to a complicated wave pattern because of mode coupling among possibly generated waves, that may give difficulties for interpreting the results both experimentally and analytically.

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

223-230

DOI

10.1007/978-1-4615-4791-4_27

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Characterization of Layered Cylindrical Structures Using Cylindrical Waves

Snowbird, UT, USA

A major problem for the oil, gas and petro-chemical industries is corrosion in pipelines. Wall thinning and corrosion pits can occur both from the inside and the outside of pipe walls. A large proportion of these pipelines are usually insulated, that makes the detection and evaluation more difficult by conventional NDE techniques. Great progress is being made on the use of ultrasonic guided waves in pipelines for detection and classification [1–7]. Excellent propagation for a long distance under insulation and sensitivity to certain defects make guided waves possible for practical usefulness. However, ultrasonic guided wave propagation and reflection in pipelines are still not completely understood. To quantitatively evaluate thin layered pipelines, especially with small radius, those technique may lose accuracy. An incident wave interacting with a curved structure may give rise to a complicated wave pattern because of mode coupling among possibly generated waves, that may give difficulties for interpreting the results both experimentally and analytically.