Найдено научных статей и публикаций: 1, для научной тематики: Low velocity impact
1.
G.R. Rajkumar, M. Krishna, H.N. Narasimha Murthy, S.C. Sharma, and K.R. Vishnu Mahesh
- Journal of Materials Engineering and Performance , 2011
The aim of this study was to experimentally investigate the effect of repeated low-velocity impacts on tensile
strength of fiber metal laminates (FMLs) using instrumented drop weight impact tester. FMLs were fabricated
layer by layer intercalating three layers of aluminum 6061 and two layers of glas...
The aim of this study was to experimentally investigate the effect of repeated low-velocity impacts on tensile
strength of fiber metal laminates (FMLs) using instrumented drop weight impact tester. FMLs were fabricated
layer by layer intercalating three layers of aluminum 6061 and two layers of glass fiber-reinforced
epoxy. The FMLs were subjected to repeated low-velocity impacts (<10 m/s) at the same location on the
FML. The degradation of mechanical property due to impact(s) was studied using Zwick UTM at distances
of 0, 20, 40, and 60 mm from the impact point. Results indicate that ultimate tensile strength, failure strain,
and ductility of all specimens initially decrease, and then remain constant with increase in number of
impacts. A closer examination of impacted FML by scanning electron microscope indicates that thinning
and shear fracture in aluminum layers, as well as delamination, and fiber failure in composites plies were
present.