Developmental techniques for ultrasonic flaw detection and characterization in stainless steel. [PWR]
Flaw detection and characterization by ultrasonic methods is particularly difficult for stainless steel. This paper focuses on two specific problem areas: (a) the inspection of centrifugally cast stainless steel (CCSS) and (b) the differentiation of intergranular stress-corrosion cracking (IGSCC) from geometrical reflectors such as the weld root. To help identify optimal conditions for the ultrasonic inspection of CCSS, the effect of frequency on propagation of longitudinal and shear waves was examined in both isotropic and anisotropic samples. Good results were obtained with isotropic CCSS and 0.5-MHz angle beam shear waves. The use of beam-scattering patterns (i.e. signal amplitude vs skew angle) as a tool for discriminating IGSCC from geometrical reflectors is also discussed.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6101548
- Report Number(s):
- CONF-830562-2; ON: DE83014282
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ultrasonic characterization of centrifugally cast stainless steel: Topical report
Acoustic leak detection and ultrasonic crack detection
Related Subjects
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
ACOUSTIC TESTING
ALLOYS
CASTINGS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MATERIALS
MATERIALS TESTING
MICROSTRUCTURE
NICKEL ALLOYS
NONDESTRUCTIVE TESTING
PIPES
PWR TYPE REACTORS
REACTOR MATERIALS
REACTORS
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
TESTING
ULTRASONIC TESTING
WATER COOLED REACTORS
WATER MODERATED REACTORS
WELDED JOINTS