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Acceptance criteria of complete joint penetration steel bridge welds evaluated using enhanced ultrasonic methods

By: Material type: TextTextSeries: National cooperative highway research program, NCHRP research report ; No. 908Publication details: Washington, D. C. Transportation Research Board 2019Description: vii,75pSubject(s):
DDC classification:
  • 388.132 CON
Contents:
CONTENTS 1 Sumary 4 Chapter 1 Background 4 1.1 Problem Statement and Research Objective 5 1.2 Scope of Study 5 1.3 Phased Array Ultrasonic Testing (PAUT) 8 Chapter 2 Research Approach 8 2.1 Summary of the State of the Practice 12 2.2 Research Methodology 14 Chapter 3 Findings and Application 14 3.1 Critical Flaw Size 24 3.2 Round Robin Results 33 3.3 CIVA Modeling 33 3.4 Acoustic Attenuation 39 3.5 Shear Wave Velocity 44 3.6 Calibration Blocks 46 3.7 Amplitude Limit for Rejection of Flaws 53 3.8 Amplitude Limit for Detection of Flaws 63 3.9 Compression Weld Acceptance Criteria 65 3.10 Comparison to Radiographic Testing : I 65 3.11 Technician Performance Qualification 69 3.12 Flaw Sizing Acceptance Criteria for Alternative UT Methods 72 Chapter 4 Conclus ions and Suggested Research 72 4.1 Conclusions 72 4.2 Suggested Research 74 References
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Item type Current library Collection Call number Status Date due Barcode Item holds
Book CEPT Library BK 388.132 CON Available 021635
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CONTENTS
1 Sumary
4 Chapter 1 Background
4 1.1 Problem Statement and Research Objective
5 1.2 Scope of Study
5 1.3 Phased Array Ultrasonic Testing (PAUT)
8 Chapter 2 Research Approach
8 2.1 Summary of the State of the Practice
12 2.2 Research Methodology
14 Chapter 3 Findings and Application
14 3.1 Critical Flaw Size
24 3.2 Round Robin Results
33 3.3 CIVA Modeling
33 3.4 Acoustic Attenuation
39 3.5 Shear Wave Velocity
44 3.6 Calibration Blocks
46 3.7 Amplitude Limit for Rejection of Flaws
53 3.8 Amplitude Limit for Detection of Flaws
63 3.9 Compression Weld Acceptance Criteria
65 3.10 Comparison to Radiographic Testing : I
65 3.11 Technician Performance Qualification
69 3.12 Flaw Sizing Acceptance Criteria for Alternative UT Methods
72 Chapter 4 Conclus ions and Suggested Research
72 4.1 Conclusions
72 4.2 Suggested Research
74 References



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