Publication: Publication Date: 1 September 2018Testing Method:
Fracture Mechanics–based Acceptance Criteria and Discontinuity Sizing with Phased Arrays
Fracture mechanics–based acceptance criteria are becoming more common in weld inspection and are being used quite regularly. If properly applied, lower reject rates can be expected with such criteria. Application of these criteria, however, requires certain specific inputs—primarily, an accurate measurement of discontinuity size.
References
ASME, 2016, “Use of Alternative Ultrasonic Acceptance Criteria,” Appendix R, ASME Process Piping Code, Section B31.3, American Society for Mechanical Engineers, New York, NY.
ASME, 2017, “Ultrasonic Examination in Lieu of Radiog-raphy Examination,” 7.5.5, ASME Boiler and Pressure Vessel Code, Section VIII, Division 2, Alternative Rules, American Society for Mechanical Engineers, New York, NY.
Birring, A.S., 2008, “Selection of Phased Array Parameters for Weld Testing,” Materials Evaluation, Vol. 66, No. 9, pp. 931–934.
Birring, A.S., 2010, “Sizing Discontinuities by Ultrasonics,” Materials Evaluation, Vol. 68, No. 11, pp. 1209–1215.
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