3-DIMENSIONAL MEASUREMENT OF SHORT FATIGUE CRACKS USING SCANNING ACOUSTIC MICROSCOPY

Authors
KNAUSS D BENNINK DD MARTIN JW BRIGGS GAD ZHAI T
Citation
D. Knauss et al., 3-DIMENSIONAL MEASUREMENT OF SHORT FATIGUE CRACKS USING SCANNING ACOUSTIC MICROSCOPY, Materials science and technology, 9(12), 1993, pp. 1086-1093
Citations number
16
Categorie Soggetti
Metallurgy & Mining","Material Science
Journal title
Materials science and technology → ACNP
ISSN journal
02670836
Volume
9
Issue
12
Year of publication
1993
Pages
1086 - 1093
Database
ISI
SICI code
0267-0836(1993)9:12<1086:3MOSFC>2.0.ZU;2-7
Abstract
The three-dimensional crack growth of short fatigue cracks in Al-Li 80 90 alloy has been examined using time resolved acoustic microscopy. Tw o sets of specimens were machined having different orientations of the elongated grains. Depending on the orientation of the pancake shaped grains with respect to the propagation direction of the cracks differe nt growth rates were obtained. Furthermore, the influence of the micro structure (e.g. grain boundaries) on the crack path in the two sets of specimens could be determined.