Experimental Comparison of Damage in Fiber-Metal Laminates with Different Layer Arrangements Subject to Static Loading

Fiber-Metal Laminates (FMLs) are structures composed of several thin metal sheets and composite layers bonded together. Despite their widespread applications in various industries, these structures are prone to failure. This study conducts experimental tests to investigate the initiation, growth of damage, and failure in FML. FMLs with different layer arrangements were subjected to static uniaxial loading, and the resulting damage was monitored. The results indicated that altering the layer arrangement—particularly the positioning of metal and composite layers—results in different damage modes in FMLs. Additionally, the failure strain was compared among FMLs with various layer arrangements and the aluminum layer used in FMLs. The findings showed that the presence of composites in the intermediate layers of FMLs increases the failure strain compared to the aluminum layer alone. This improvement can be attributed to the significant elongation observed in the aluminum layer due to the presence of the composite layers. However, if the composite layers are located in the outer layers of the FML, this increase in failure strain is not observed, as the FML specimens tend to fail due to the failure of the composite layers before the metal layers can fail.

کلیدواژه ها:

Fiber-Metal Laminate (FML) ، Experiment ، Damage ، Failure Strain ، Composite