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- W2378611604 abstract "For the study of the damage evolution and the effect of fiber pre-broken on the mechanical properties of composites for wind turbine blades,unidirectional and loading-unloading tensile tests of unidirectional and multi-axial composite were conducted.In this experiment,real-time acoustic emission monitoring was used,and tensile mechanical properties,damage failure characteristics and the corresponding acoustic emission response characteristics were obtained.The results show that because of the presence of fiber pre-broken,the damage of matrix and interface in the defect location and the adjacent region of unidirectional composites appears obviously when the load reaches to about 30% of the failure load.As the load increases to about 60%,interlaminar shear failure between defects layer and adjacent layers are induced,leading to a sharp reduction in stiffness,the acoustic emission cumulative hits are significantly higher than that of the defect-free ones.As the load reaches to about 60% of the failure load,the obvious damage of matrix resin in fiber pre-broken region occurs in the case of multi-axial composite with fiber pre-broken.As the relative stress level increases,the Felicity ratio of multi-axial composite gradually decreases." @default.
- W2378611604 created "2016-06-24" @default.
- W2378611604 creator A5050245576 @default.
- W2378611604 date "2013-01-01" @default.
- W2378611604 modified "2023-09-22" @default.
- W2378611604 title "Acoustic emission behavior on tensile failure of composite for wind turbine blades" @default.
- W2378611604 hasPublicationYear "2013" @default.
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