Paper Title:

The Effect of Random Spectrum on the Fatigue Life of Hybrid Metal Matrix Composites

Periodical Advanced Materials Research (Volumes 118 - 120)
Main Theme Materials and Product Technologies II
Edited by L.Y. Xie, M.N. James, Y.X. Zhao and W.X. Qian
Pages 336-341
DOI 10.4028/www.scientific.net/AMR.118-120.336
Citation Yi Qi Wang et al., 2010, Advanced Materials Research, 118-120, 336
Online since June, 2010
Authors Yi Qi Wang, Hyoun Kon Ku, Gi Beop Nam, Jung I. Song
Keywords Acoustic Emission (AE), Fatigue Life, Hybrid Metal Matrix Composite, Random Spectrum
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Abstract

This research makes comparisons of empirical fatigue-lives between AC8A Al alloy and the metal matrix composites (Al/Al2O3, Al/Al2O3/Al2O3p), and also includes comparisons of fatigue-lives between empirical fatigue-lives and estimated fatigue-lives from regular-periodic load testing, acoustic emission (AE) method to predict fatigue-crack initiation before visible in sight and SEM (Scanning Electron Microscope) photographs of each material. According to the test results of the notched specimen, the fatigue life of the hybrid metal matrix composites and the metal matrix composites, which are more brittle than the base matrix was shorter than that of the base matrix under both types of loads. In addition, the fatigue-life estimated from the damage summation method and that from experiments at random loads were fairly identical.