Abstract
This paper deals with penetrating damage experimental and numerical investigation on edge-closed titanium honeycomb sandwich panels under uniaxial tension. Three damage state specimens were designed and manufactured for tests including intact, prefabricated penetrating damage, and repaired. The test results show the diameter of penetrating hole has a great impact on failure mode and load, and the failure mode of repaired specimens is consistent with the intact. A parametric numerical methodology containing structural damage details was established. Numerical analysis successfully simulated the failure process of all damage states, which was consistent with the experimental observations. Scarf and inlay repair technique can be used to restore the mechanical properties of edge-closed titanium honeycomb sandwich panels.
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