A QUANTITATIVE INVESTIGATION OF FATIGUE FRACTURE SURFACES BY USING THE FOURIER-TRANSFORM METHOD

Authors
HAO Y WANG ZG TIAN JF
Citation
Y. Hao et al., A QUANTITATIVE INVESTIGATION OF FATIGUE FRACTURE SURFACES BY USING THE FOURIER-TRANSFORM METHOD, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 161(2), 1993, pp. 195-200
Citations number
7
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
161
Issue
2
Year of publication
1993
Pages
195 - 200
Database
ISI
SICI code
0921-5093(1993)161:2<195:AQIOFF>2.0.ZU;2-Q
Abstract
In the present paper, the Fourier transform method (FTM) was applied i n a study of fatigue fracture surfaces of commercial aluminum in order to relate the geometrical parameters on the fracture surface to the m icrostructure of the material. The results indicate that the power spe ctrum and the wave number are inversely related. An exponent n was ind exed by curve fitting the power spectrum peaks of the fracture profile and was shown to correlate with the crack propagation rate da/dN, and da/dN can be inferred approximately from the correlation function.