Location

La Jolla, CA

Start Date

1-1-1993 12:00 PM

Description

Reliable and accurate characterization as to type (cracks vs. others), location (highly stressed zone or not), and size of potential flaws in cladded pressure vessels by ultrasonic methods ensures the integrity of these structures. Vessel integrity is primarily affected by the presence of fatigue cracks in the highly stressed near- surface regions (Zones 1 and 2). While there have been some new high- and low- beam multimode transducer developments for characterizing Zone 2 (underclad) and Zone 3 (deeply buried) flaws, respectively [1,2], emphasis has recently been placed upon fully characterizing manufacturing flaws in the cladding (Zone 1) because they can initiate fatigue cracks.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

12A

Chapter

Chapter 4: Sensors and New Techniques

Section

Ultrasonic and Acoustic Sensors

Pages

941-948

DOI

10.1007/978-1-4615-2848-7_120

Language

en

File Format

application/pdf

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Jan 1st, 12:00 PM

Full characterization of near-surface flaws with multimode straight-beam transducers

La Jolla, CA

Reliable and accurate characterization as to type (cracks vs. others), location (highly stressed zone or not), and size of potential flaws in cladded pressure vessels by ultrasonic methods ensures the integrity of these structures. Vessel integrity is primarily affected by the presence of fatigue cracks in the highly stressed near- surface regions (Zones 1 and 2). While there have been some new high- and low- beam multimode transducer developments for characterizing Zone 2 (underclad) and Zone 3 (deeply buried) flaws, respectively [1,2], emphasis has recently been placed upon fully characterizing manufacturing flaws in the cladding (Zone 1) because they can initiate fatigue cracks.