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Limiting Creep in Aerospace Materials

  • Magazine Article
  • 20AERP04_04
Published April 01, 2020 by SAE International in United States
  • English

The Larson-Miller parameter was first used in the 1950s as a model to predict the lifetime of a material vs. time and temperature. Without close attention to materials selection, many products are not fit for purpose due to mechanical stress and natural creep. That's why creep resistant materials are so important in the aerospace industry.

Materials under service conditions are required to sustain steady loads for prolonged periods of time and often undergo a time dependent deformation that is referred to as creep. Creep is the natural tendency of a material to gradually move or permanently deform as a result of mechanical stress or strain.