Experimental study and progressive failure analysis of stitched foam-core sandwich composites subjected to low-velocity impact

2016 ◽  
Vol 39 (3) ◽  
pp. 624-635 ◽  
Author(s):  
Fengyu Han ◽  
Ying Yan ◽  
Jian Ma
Keyword(s):  
Experimental Study ◽  
Failure Analysis ◽  
Progressive Failure ◽  
Low Velocity Impact ◽  
Foam Core ◽  
Sandwich Composites ◽  
Low Velocity ◽  
Velocity Impact ◽  
Progressive Failure Analysis

scholarly journals Fabrication and low-velocity impact response of pyramidal lattice stitched foam sandwich composites

2020 ◽  
Vol 27 (1) ◽  
pp. 245-257
Author(s):  
Jiale Jia ◽  
Shi Yan
Keyword(s):  
Numerical Simulation ◽  
Failure Modes ◽  
Absorption Capacity ◽  
Low Velocity Impact ◽  
Sandwich Composite ◽  
Foam Core ◽  
Sandwich Composites ◽  
Low Velocity ◽  
Velocity Impact ◽  
The Impact

AbstractIn this study, the foam sandwich panels were manufactured by integrating top facesheet and bottom facesheet with pyramidal lattice stitched core to overcome the weak interface between the core and skins of the sandwich structures. Low-velocity impact test and numerical simulation were conducted to reveal the failure mechanisms and energy absorption capacity at sandwich composite with foam core, different strut stitched foam core under different impact energy. The experimental results show showed that the strut core can improve the impact resistance of the specimen, and which is closely related to the diameter of the strut core. Compared with foam sandwich structure, pyramidal lattice stitched foam sandwich composites have comparable specific energy absorptions. The failure modes were also analyzed which is: fiber breakage, delamination, foam deformation and strut core breakage. The research presented here confirms that numerical simulation show good agreement with the experiment.

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