Reliability strategies in flaw evaluation
Conference
·
OSTI ID:5256884
Critical inputs into any fracture mechanics model are the shape, size, orientation and location of flaws in the system being analyzed. All of these parameters will have finite error values when determined by non-destructive examination (NDE) techniques such as ultrasonics (UT). The factors influencing ultrasonic detection, sizing and location of defects are examined to permit a prediction of reliability values for the various parameters. The linear elastic fracture mechanics model used in Appendix A of ASME Section XI of the Boiler and Pressure Vessel Code is examined in the context of flaws in various locations in a pressure boundary to infer the necessary levels of reliability in detecting, locating and sizing these flaws by UT. Where the NDE reliability values were considered to be inadequate with conventional UT, based on analysis of fracture mechanics parameters, potential gains with alternate or advanced NDE systems were examined.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5256884
- Report Number(s):
- PNL-SA-8817; CONF-8010190-2; ON: DE82010747
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fabrication of specimens with controlled flaws
Fabrication of performance demonstration initiative specimens with controlled flaws
Integration of NDE reliability and fracture mechanics
Conference
·
Sun Oct 01 00:00:00 EDT 1995
·
OSTI ID:106041
Fabrication of performance demonstration initiative specimens with controlled flaws
Conference
·
Tue Aug 01 00:00:00 EDT 1995
·
OSTI ID:86128
Integration of NDE reliability and fracture mechanics
Conference
·
Tue Oct 01 00:00:00 EDT 1985
·
OSTI ID:6403312