ISSN: 0090-3973
Published Online: 19 April 2007
Page Count: 4

Experimental Technique for Fully-Reversedqa Low-Cycle Fatigue Testing of Thin Metallic Foils

Yang, D.

Composites and Advanced Materials Engineering Laboratory, Georgia Institute of Technology, School of Aerospace Engineering,

Holmes, J. W.
Composites and Advanced Materials Engineering Laboratory, Georgia Institute of Technology, School of Aerospace Engineering,

(Received 5 March 2006; accepted 17 January 2007)

Abstract

Details are provided for a new experimental approach to study the fully-reversed strain controlled low-cycle fatigue (LCF) behavior of thin metallic foils. To illustrate the technique the fatigue life of an Ni-base superalloy foil was studied at room temperature and 500°C. The fatigue tests were performed at a loading frequency of 2.2 Hz. For a strain amplitude of 1.5 % the fatigue life ranged from 649 and 754 cycles at room temperature and between 227 and 340 cycles at 500°C. In addition to metallic foils, the technique can be used to study the fully-reversed bending of other materials such as optical fibers.

Keywords:
fatigue, Ni-base, foil, strain, elevated temperature

Paper ID: JTE100524
DOI: 10.1520/JTE100524
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