Location

La Jolla, CA

Start Date

1-1-1989 12:00 AM

Description

Type, through-wall dimension (depth), and location are the most important flaw characteristics that need to be determined for the fracture-mechanics evaluation of a flawed component or part. In this paper, the three-step approach to the ultrasonic evaluation of flawed reactor pressure vessel components (i.e., flaw detection, identification, and sizing) are discussed in relation to fatigue cracks, slag inclusions, incomplete fusion flaws, and porosity clusters. The emphasis is on flaw identification (cracks vs. benign flaws) which must take place before estimating the depth of the flaw. The composite pulse patterns obtained with four multibeam/multimode SLIC transducers [1] for two model flaws (a side-milled notch and a side-drilled hole) and two real flaws (fatigue crack and slag inclusion) are imaged in a B-scan format.

Volume

8B

Chapter

Chapter 10: Inspection Reliability

Pages

2267-2273

DOI

10.1007/978-1-4613-0817-1_288

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Imaging the Interaction of Multibeam/Multimode Ultrasonic Transducers with Manufacturing and Service-Induced Flaws

La Jolla, CA

Type, through-wall dimension (depth), and location are the most important flaw characteristics that need to be determined for the fracture-mechanics evaluation of a flawed component or part. In this paper, the three-step approach to the ultrasonic evaluation of flawed reactor pressure vessel components (i.e., flaw detection, identification, and sizing) are discussed in relation to fatigue cracks, slag inclusions, incomplete fusion flaws, and porosity clusters. The emphasis is on flaw identification (cracks vs. benign flaws) which must take place before estimating the depth of the flaw. The composite pulse patterns obtained with four multibeam/multimode SLIC transducers [1] for two model flaws (a side-milled notch and a side-drilled hole) and two real flaws (fatigue crack and slag inclusion) are imaged in a B-scan format.