Fatigue life program using strain-life methods
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Authors
Skelly, Michael V.
Subjects
Fatigue
Strain-life
Aluminum 7075
Strain-life
Aluminum 7075
Advisors
Lindsey, Gerald H.
Date of Issue
1993-03
Date
March 1993
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A user friendly program was developed to calculate fatigue life using Strain-Life equations, given either a stress history or a strain history. Additionally, the material parameters and associated stress concentration factors can be varied. Since certain material constants, such as cyclic strength coefficient (K') and cyclic strain hardening exponent (n') vary during a material's fatigue life, the program is capable of either keeping them constant or varying them as a function of elapsed cycles. The program was then utilized to examine the effects of varying K' and n' on the calculated fatigue life of aluminum 7075-T6 under a typical flight load history.
Type
Thesis
Description
Series/Report No
Department
Department of Aeronautics and Astronautics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
82 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.