Ultrasonic Phased Array Implementation of the Inside Diameter Creeping Wave Sizing Method
This paper describes a technique for implementing the ultrasonic inside diameter (ID) creeping wave technique for detection and sizing ID connected defects using a phased array ultrasonic system. The technique uses multiple focal laws to produce the examination modes. The first focal law is designed to create a shear wave nominally at the critical angle for mode conversion to a longitudinal wave at the ID of a part, thus creating a creeping wave. This focal law is focused at the ID to improve sensitivity. The rest of the laws are designed to create tandem sound paths that progress up a vertical surface directly above the focal point of the creeping wave generation point. When a defect on the inner surface is detected with the creeping wave, the height of the defect can be measured from the response of a set of tandem laws without readjusting the position of the probe. Results from standard one-inch long notches of varying depths are presented.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- DOE - NE
- DOE Contract Number:
- DE-AC07-99ID-13727
- OSTI ID:
- 911768
- Report Number(s):
- INL/CON-05-00980; TRN: US0800126
- Resource Relation:
- Conference: 5th International Conference on NDE in Relation to Strutural Integrity for Nuclear & Pressurized Com,San Diego, CA,05/10/2006,05/12/2006
- Country of Publication:
- United States
- Language:
- English
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