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Analysis of dominant frequencies of glass fiber/aluminum laminates during acoustic emission measurement
- Authors
- Woo, S.-C.; Choi, N.-S.
- Issue Date
- 2006
- Publisher
- Trans Tech Publications Ltd
- Keywords
- Acoustic Emission; Crack Propagation; Dominant Frequency; Fracture Mechanism; Glass Fiber Aluminum Laminates
- Citation
- Key Engineering Materials, v.321-323 II, pp.901 - 906
- Indexed
- SCOPUS
- Journal Title
- Key Engineering Materials
- Volume
- 321-323 II
- Start Page
- 901
- End Page
- 906
- ISSN
- 1013-9826
- Abstract
- Dominant frequency characteristics of acoustic emission (AE) from single-edge-notched (SEN) glass fiber aluminum laminates (GFAL) under tensile loads were analyzed in relation to fracture mechanisms. The first and second peak frequencies expressed the characteristic changes of fracture processes in SEN-GFAL specimens such as macro-crack propagation and/or delamination between aluminum and fiber layers. On the basis of the above frequency analysis and of the fracture observation with ultrasonic through-scan and various microscopes, characteristic models for crack propagation of SEN-GFAL was proposed according to various orientations of fiber layer.
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