April 28, 2022


This 4-hour course reflects a continuation of E2G’s Fatigue I Course and includes content on the Battelle Structural Stress Method for welded fatigue applications and the use of the Strain-Life Equation to predict remaining life. Additionally, an overview of fracture mechanics and the crack growth approach will be offered, and fundamentals of ratcheting and ASME Code Case 2605 will be discussed. Lastly, example problems and practical fatigue mitigation design strategies will be presented.

Recommended Prerequisite: DBA I, DBA II, and Fatigue I

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Course Outline

  • Battelle Structural Stress Method
    • Developments in Structural-Strain Approach
  • Strain-Life Equation (API 579-1/ASME FFS-1, Part 14)
    • Critical Plane Method
  • Fracture Mechanics (Crack Growth) Approach
  • ASME VIII-2 Fracture Toughness and Brittle Fracture
  • Fundamentals of Ratcheting for Design by Analysis
    • Overview of the Bree Diagram
    • Recent Updates to Ratcheting Rules
  • Overview of ASME Code Case 2605
  • Practical Fatigue Mitigation Strategies through Design
  • Example Problems

Course Outcomes

Upon completion of this training course, attendees will be able to:

  • Describe the Battelle structural stress method
  • Explain how to use Strain-Life Equation to predict remaining life
  • Restate the key concepts of fracture mechanics and describe the crack growth approach
  • Discuss the fundamentals of ratcheting for DBA
  • Describe the Bree diagram and how it is applied
  • Recall recent updates to the ratcheting rules in VIII-2 and API 579
  • Understand the basics of ASME Code Case 2605
  • List several practical design/fabrication strategies to mitigate fatigue damage
  • Describe the example problems given, and review and analyze the solutions presented

Who Should Attend

  • Engineering, design, reliability, and maintenance personnel in the oil and gas, petrochemical, specialty chemical, fertilizer, pulp and paper, power generation, and related industries
  • Pressure vessel, piping, and tankage fabricators, engineers, and designers
  • Engineering and reliability managers and central engineering staff
  • Mechanical, materials, and corrosion engineering specialists

Register for the Course


April 28, 2022

1 Half-Day

4 PDHs

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