Accession Number:

ADA146630

Title:

Constitutive Modeling of Engine Materials.

Descriptive Note:

Final rept. Jul 81-Oct 83,

Corporate Author:

PRATT AND WHITNEY WEST PALM BEACH FL GOVERNMENT PRODUCTS DIV

Personal Author(s):

Report Date:

1984-07-01

Pagination or Media Count:

84.0

Abstract:

This investigation examines the capability to predict the growth of cracks in critical structural components operating at elevated temperatures where time-dependent behavior occurs. A viscoplastic constitutive model for INCO 718 was developed to determine this behavior in the area of the crack tip. The model constants were obtained from monotonically increasing, cyclic, and sustained loading. Therefore, the model has the capability to account for load history effects as well as material damage accumulation. Theoretical predictions are compared to the experimental results. Author

Subject Categories:

  • Non-electrical Energy Conversion
  • Test Facilities, Equipment and Methods
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE