Paper Title:

Hysteresis, Temperature and Resistance Measurements for the Characterization of the Cyclic Deformation Behavior of Metals

Periodical Materials Science Forum (Volumes 567 - 568)
Main Theme Materials Structure & Micromechanics of Fracture V
Edited by Pavel Šandera
Pages 51-56
DOI 10.4028/www.scientific.net/MSF.567-568.51
Citation F. Walther et al., 2007, Materials Science Forum, 567-568, 51
Online since December, 2007
Authors F. Walther, Dietmar Eifler
Keywords Cyclic Deformation Behavior, Electrical Resistance Measurements, Fatigue Life Calculation, Metal, Microstructure, Random Loading, Stress-Strain Hysteresis, Temperature Resistance Measurements
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Mechanical stress-strain hysteresis, temperature and electrical resistance measurements were performed for the microstructure-related characterization of the fatigue behavior and for the fatigue life calculation of metals. The proceeding fatigue damage was evaluated using the change of the load-free electrical resistance, which is strongly influenced by the defect density of the individual material state. A new test procedure was applied for the fatigue assessment under random loading on the basis of cyclic deformation curves, similar to single step loading. A physically based fatigue life calculation “PHYBAL” was developed, which requires only three fatigue tests for the rapid and nevertheless precise calculation of S-N (Woehler) and fatigue life curves.

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