Evaluating an adhesive effect on core surface configuration for sandwich panel with peel simulation approach

다국어 초록 (Multilingual Abstract)

This paper investigates the adhesive effect between the surface layer of sandwich panel with three different core surface configurations by using a peel simulation approach.
The sandwich panels with cavity on the core structure can potentially be highly vulnerable to debonding phenomenon when subjected to extreme loading. The three-dimensional sandwich panels based on ASTM D1876 were developed with a finite element modelling and subjected to a constant loading magnitude of 100 MPa in two force directions of 90° and 180°. The result shows that the sandwich panel with a honeycomb core and a dimpled surface core showed increments in stress distributions at bonding area (85 % and 12.8 % at the force direction of 90°; 69.9 % and 11.6 % at the force direction of 180°) compared to that with a solid plate core.
Nevertheless, the high shear stress was revealed at a large adhesive area, indicating the high potential for debonding to occur at the adhesive area between panel surface layers. This stress was directly proportional to the total deformation. The size of the adhesive area influences the bonding strength, but an extra reduction in the core density could lead to the early failure of the sandwich panel.

참고문헌 (Reference)

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