Damage Tolerance for Gas Turbine Engines C1323

Topics: Powertrain & Propulsion

Demands for reliability and minimum weight for aircraft and propulsion systems offer some of the most challenging technical problems that structural and safety engineers can encounter.  Although much information is available on fracture mechanics and aircraft damage tolerance, this course specifically relates to damage tolerance for gas turbine engines.  The need to consider damage tolerance more broadly in new engine designs has just recently been written into FAR 33.70 and new EASA guidelines.  This seminar relates directly to the growing interest and priority the AIA, FAA, and engine OEM"s have placed on turbine engine damage tolerance.  

This two-day seminar offers a broad survey of damage tolerance, one of the many principles behind one of the safest industries in the world.  Although the basics of fracture mechanics will be covered, this is not an advanced fracture mechanics course. Attendees will receive information on how experts in the propulsion community use the principles of prevent, quantify, and improve to keep air travel safe.   The instructor will guide participants through notable historical events as well as experiences within a leading engine manufacturing company.  The basics of fracture mechanics will be covered with a view towards practical application.   Traditional deterministic and the newest probabilistic approaches will be introduced.  Finally, attendees will be exposed to a broad range of improvements that have been made to address specific threats within the propulsion business.

Learning Objectives

By attending this seminar, you will be able to:

  • Evaluate the sensitivity of structures to different types of damage
  • Explain what it means for a design to be “damage tolerant”
  • Identify three-pronged approach of prevent, quantify, and improve aimed at safety
  • Discuss basic principles of fracture mechanics
  • Identify steps involved in deterministic and probabilistic approaches

Who Should Attend

This seminar is intended for engineers working in the gas turbine industry. In addition, employees at overhaul shops and individuals involved in product certification will also benefit from the information presented in this seminar.


An engineering degree or similar technical degree is required. Some background in structural analysis, fracture mechanics, materials, or design would be helpful.

You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.

Day One

  • Introduction to Gas Turbine Engine Components
  • Historical Perspectives on Safety
    • Safe life approach (FAR 33.14)
    • Notable events
    • Experiences at Rolls-Royce Corporation
    • Safety across the industry

  • Containment strategies
  • Emerging need for damage tolerance
  • Supplementing Safe Life: FAR 33.70 / EASA CM
    • Modern design considerations
    • Economic considerations
    • Growing fleets
  • Anomaly types
    • Surface
    • Sub-surface

Day Two

  • Prevent:
    Top priority: Stop damage from occurring
  • Quantify:
    Understanding the environment - stress, temperature, and time
    EIFS concept
    Deterministic analysis methods
    Inspection methods
    Probabilistic methods
  • Improve:
Jeffrey Stillinger

Since 1998, Mr. Stillinger has gained experience in the gas turbine industry and is currently a Critical Parts Lifing consultant working at Rolls-Royce Corporation in Indianapolis, Indiana.

The role requires a broad background with analytical models, rotor grade materials, manufacturing, design, safety & reliability, certification, and testing. Mr. Stillinger has a focus in rotating structures analysis, and has more recently been involved in developing probabilistic methods for systems. Mr. Stillinger is currently active on the Aerospace Industries Association\'s Rotor Integrity Subcommittee (RISC) working with the FAA and EASA on issues related to damage tolerance for gas turbine engines. RISC represents a multi-OEM effort to quantify and recommend best practice. In his current role, Jeff works with the FAA on a regular basis. Jeff serves on the Industrial Advisory Board at Indiana University Purdue University at Indianapolis (IUPUI).

Duration: 2 Days
CEUs: 1.3

Fees: $1415.00

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