Accession Number : ADA044420

Title :   Cumulative Damage Fracture Mechanics at Elevated Temperatures.

Descriptive Note : Final rept. 1 May-1 Nov 76,

Corporate Author : PRATT AND WHITNEY AIRCRAFT GROUP WEST PALM BEACH FLA GOVERNMENT PRODUCTS DIV

Personal Author(s) : Sims,David L ; Annis,Charles G , Jr ; Wallace,Raymond M

PDF Url : ADA044420

Report Date : Apr 1977

Pagination or Media Count : 64

Abstract : The interpolative hyperbolic sine model for mission-mix crack growth was used to predict the propagation histories and cycles-to-failure for two specimen geometries (compact tension and surface crack) at two temperatures (1000 F and 1200 F). Results were encouraging with an average prediction error of less than 15%. (Author)

Descriptors :   *DISKS, *TURBOFAN ENGINES, *FIGHTER AIRCRAFT, *CRACK PROPAGATION, *INTERPOLATION, *MATHEMATICAL MODELS, NICKEL ALLOYS, LIFE EXPECTANCY, PREDICTIONS, FRACTURE(MECHANICS), HIGH TEMPERATURE, HYPERBOLAS, STRESS ANALYSIS, SURFACE PROPERTIES, CUMULATIVE TECHNIQUES, TENSILE STRENGTH, CREEP TESTS, COMPUTERIZED SIMULATION

Subject Categories : Attack and Fighter Aircraft
      Metallurgy and Metallography
      Theoretical Mathematics
      Mechanics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE