In-situ damage monitoring and numerical characterization of three-point bending and incremental cycle flexural behavior of FMLs

MECHANICS OF ADVANCED MATERIALS AND STRUCTURES(2023)

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摘要
This article experimentally and numerically investigates the bending response and failure mechanisms of FMLs under three-point bending tests. The in-situ microscope observation from step-by-step interrupted flexural tests is implemented to capture the failure mechanisms and damage evolution. Then, a numerical simulation is employed to characterize the damage initiation and progressive damage evolution process. Finally, the bending response and stiffness degradation of FMLs under incremental cyclic flexural loading tests are experimentally researched. The in-situ monitoring for FMLs-A shows that the appearance of fiber kink-band, fiber fracture, and metal cracking are identical with the moments of sudden loading decrease, respectively.
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关键词
Fiber metal laminate,bending behavior,in-situ damage monitoring,numerical simulation,progressive damage analysis
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