Development of the Microstructure Based Stochastic Life Prediction Models
Abstract
The purpose of the fatigue life prediction program at UCLA is to characterize the accumulation of the microstructural damage during fatigue of the aluminum alloys and to use obtained data in the formulation of the microstructure based stochastic life prediction models. Emphasis during the first year of the program was on the implementation of all required quantitative microscopy techniques and on the characterization of the starting microstructures in the high and low porosity 7050-T7451 commercial plate alloys. The first assembled set of data includes characteristics of the grain structures, constituent particles and pores on the sections parallel to the plate surface as a function of the distance from the surface. The results show that both alloys have partially recrystallized structure with the recrystallization levels changing from zero at the surface to about 20% in the center.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 10, 1992
- Accession Number
- ADA246447
Entities
People
- Annetta J. Luevano
- Jimin Zhang
- Marek A. Przystupa
Organizations
- University of California, Los Angeles