Cumulative Damage Fracture Mechanics Under Engine Spectra.

Abstract

An empirically based mathematical model and computer code capable of predicting cumulative damage effects on fatigue crack growth in engine disks has been developed for Waspaloy (PWA 1007) and IN100 (PWA 1073). The computing software segregates a complex loading mission, applies a multi-parameter interpolation procedure to determine cycle-by-cycle crack growth, and performs a specimen life calculation. The model was developed from a broad matrix of tests of both materials, and a number of auxiliary investigations were conducted to examine the range of applicability of the model. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1980
Accession Number
ADA084934

Entities

People

  • B. J. Schwartz
  • C. G. Annis Jr.
  • J. M. Larsen

Organizations

  • Pratt & Whitney

Tags

Communities of Interest

  • C4I

DTIC Thesaurus Topics

  • Creep
  • Databases
  • Fracture (Mechanics)
  • Frequency
  • Gas Turbines
  • Geometry
  • Materials
  • Materials Laboratories
  • Mathematical Models
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Stress Intensity Factors
  • Stresses
  • Test And Evaluation
  • Turbine Components
  • Turbines

Readers

  • Computational Modeling and Simulation
  • Materials Science (Mechanical Engineering).
  • Structural Health Monitoring of Composite Structures.