Acceptance Criteria of Complete Joint Penetration Steel Bridge Welds Evaluated Using Enhanced Ultrasonic Methods (2019) / Chapter Skim
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1 S U M M A R Y Acceptance Criteria of Complete Joint Penetration Steel Bridge Welds Evaluated Using Enhanced Ultrasonic Methods This report summarizes the research and findings of NCHRP Project 14-35: Acceptance Criteria of Complete Joint Penetration Steel Bridge Welds Evaluated Using Enhanced Ultrasonic Methods, which focused on developing guidelines to evaluate complete joint penetration (CJP) welds in steel bridges based on updated acceptance criteria (developed during this research)
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2 An analytical parametric study was performed in order to establish the critical flaw size that would be considered rejectable for typical bridge CJP welds, and the results were used to identify the critical flaw size that should be reliably detected and rejected and to establish revised acceptance and rejection criteria. The critical flaw sizes were evaluated based on fracture mechanics using a British Standards Institute BS 7910:2013 [2]
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3 which an improved acceptance criteria were developed to consistently reject these flaws. As long as flaws of this size or larger are consistently rejectable, the procedure will be effective at removing critical flaws from service.
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