Initiation and Growth Behavior of Small Surface Fatigue Cracks on SiC Particle-Reinforced Aluminum Composites

Title
Initiation and Growth Behavior of Small Surface Fatigue Cracks on SiC Particle-Reinforced Aluminum Composites
Author(s)
김상태이상협[이상협]최영근[최영근]
Keywords
METAL-MATRIX COMPOSITE; ALLOY COMPOSITES; PARTICULATE
Issue Date
201010
Publisher
VSP BV
Citation
ADVANCED COMPOSITE MATERIALS, v.19, no.4, pp.317 - 330
Abstract
Reversed plane bending fatigue tests were conducted on SiC particle-reinforced aluminum composites. The initiation and growth behaviors of small surface fatigue cracks were continuously monitored by the replica technique and investigated in detail. The fatigue life of MMC is shorter than that of matrix because there exists interface debonding of SiC particles and matrix on the whole face of the notch part in the casting metal matrix composite (MMC). The coalescence of small cracks was observed in the surface after conducting fatigue tests at high stress levels. Due to the coalescence, a higher crack growth rate of small cracks rather than that of long cracks was recognized in da/dn - K(max) relationship. (c) Koninklijke Brill NV, Leiden, 2010
URI
http://hdl.handle.net/YU.REPOSITORY/23521http://dx.doi.org/10.1163/092430409X12605406698435
ISSN
0924-3046
Appears in Collections:
공과대학 > 기계공학부 > Articles
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