TY  - BOOK
AU  - Connor, Robert J. & Others
TI  - Acceptance criteria of complete joint penetration steel bridge welds evaluated using enhanced ultrasonic methods 
T2  - National cooperative highway research program, NCHRP research report
U1  - 388.132 
PY  - 2019///
CY  - Washington, D. C.
PB  - Transportation Research Board
KW  -  
N1  - 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




ER  -