Assessment of 4-point bending fatigue performance of composite sandwiches with reduced carbon footprint
- Resource Type
- Authors
- Wu, Yuan; Casari, Pascal; Pastor, Marie-Laetitia; Perrin, Marianne; Gong, Xiaojing
- Source
- The 9th International Conference on the Fatigue of Composites (ICFC9)
The 9th International Conference on the Fatigue of Composites (ICFC9), Jun 2023, Vicenza, Italy
- Subject
- fatigue stiffness degradation
[SPI]Engineering Sciences [physics]
fatigue damage evolution
4-point bending fatigue
wood cored sandwich
- Language
- English
International audience; In this work, 4-point bending fatigue performance including the fatigue damage evolution process, stiffness degradation process and fatigue lifetime of eco balsa cored composite sandwich structures have been investigated. An original triple dog-bone shape has been used to facilitate the observation of the induced laminate skin and core damages thanks to a localized bending or shear stress under 4-point bending loading. The microscopic images have been investigated to explain the fatigue damage evolution process in three stages of stiffness decrease curve during the whole fatigue process. The Glass-Fiber-Reinforced-Polymer (GFRP) skin damages are the predominant failure modes under the fatigue loading.