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- W4311454619 endingPage "108993" @default.
- W4311454619 startingPage "108993" @default.
- W4311454619 abstract "Damage mechanisms in composite laminates are quite complex, and it is necessary to perceive their effects on the degradation of laminate mechanical properties. This work employs acoustic emission (AE) and digital image correlation (DIC) techniques to describe the evolution of intra/inter-laminar damage modes in the CFRP laminates under in-plane/out-of-plane loading conditions. In this study, laminates of stacking sequences [900]8, [450]8, [450/−450]2s, and [00]8 under tensile load are investigated to distinguish the intra-laminar damages like matrix cracking, fiber–matrix debond, and fiber breakage. Double cantilever beam, end notch flexure, and mixed-mode bending specimens are used to characterize delamination failure in the laminate. An unsupervised k-means clustering technique is used to classify the AE data based on peak frequency and amplitude. The surface displacement and strain data are evaluated using the DIC technique to understand the damage evolution in the laminates. Post failure analysis is carried out using a digital microscope, and fractography studies are used to identify and assign the damages to different AE clusters. This investigation yields a taxonomy of damage modes, their sequence of occurrence, and failure strains that can be used for structural health monitoring and progressive damage modeling of composite laminates." @default.
- W4311454619 created "2022-12-26" @default.
- W4311454619 creator A5046867379 @default.
- W4311454619 creator A5066366945 @default.
- W4311454619 date "2023-01-01" @default.
- W4311454619 modified "2023-09-30" @default.
- W4311454619 title "Damage characterization of CFRP laminates using acoustic emission and digital image correlation: Clustering, damage identification and classification" @default.
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- W4311454619 doi "https://doi.org/10.1016/j.engfracmech.2022.108993" @default.
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