In this 8-hour course, you will explore the fundamental principles, concepts, and technical parameters essential for assessing defects—such as cracks—in high-pressure pipelines and associated components. You will gain an in-depth understanding of assessment methods under both static and cyclic loading, including the determination of appropriate loading conditions and material properties.
Upon completing the course, you will be able to explain the history and core principles of fracture mechanics, including different modeling approaches. You will also learn to identify and apply the most effective assessment methods based on fracture mechanics. Additionally, you will be able to define and differentiate between the traditional fatigue assessment approach and the fracture mechanics approach to fatigue evaluation.
Elastic stress intensity factor and the energy release rate
J-integral and CTOD – elastic-plastic crack analysis
Basic fracture assessment – fracture toughness = driving force
Plastic collapse
Primary and secondary stresses
Fracture toughness testing
Weldment testing
Test standards
Charpy impact test
Correlations between fracture toughness and Charpy impact energy
The Failure Assessment Diagram – overview
Fracture ratio Kr
Load ratio Lr
Choice of FAD
Standards – BS 7910, API 579
Software packages for fracture assessment
Other assessment methods – CorLAS, PAFFC, LEFM, MAT-8
Residual stress due to pipe manufacture andwelding
Hydrotesting and other proof load effects
Post Weld Heat Treatment
High strain assessment
Fatigue – S-N analysis
Fatigue – fracture mechanics growth prediction
Ductile tearing – R-curve analysis
Environmental Effects
Design and service records
Pipe stress analysis output – code compliance checks and requirements for fracture assessments
SCADA data and cycle counting
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