Open AccessEffect of the core thickness on the flexural behaviour of polymer foam sandwich structures
Author(s) -
Yash P. Gupta,
Varghese Paul,
Ashish Jacob,
Akash Mohanty
Publication year - 2020
Publication title -
iop scinotes
Language(s) - English
Resource type - Journals
ISSN - 2633-1357
DOI - 10.1088/2633-1357/abb0f5
Subject(s) - materials science , composite material , core (optical fiber) , flexural strength , epoxy , composite number , polyurethane , finite element method , shear (geology) , deformation (meteorology) , structural engineering , engineering
In this study, the effect of the core thickness of the sandwich composite on its flexural strength was investigated. E-glass fibre reinforced epoxy-based laminates were used as the skin materials whereas a polyurethane foam was used as the core material with varying thickness of 5, 7, and 9 mm. The experimental/theoretical and FEA analysis were carried out. Results indicated that as core thickness increased, the axial face stresses/core shear stresses and total deformation decreased. This improved the composite structural properties. This improvement was accompanied by a minor increase in weight. A good concurrence was observed between theoretical and FEA results. These results allow us to compare and select optimum parameters for aerospace applications.