On the Indentation Resistance of a PC Layer on PVC Foam Substrate1 . Issue 10 (22nd May 2017)

• Record Type: Journal Article
• Authors: Boyce, Adam M.; Deshpande, Vikram S.; Fleck, Norman A.
• Other Names: Andersen Olaf guestEditor.; Scheffler Michael guestEditor.
• Is Part Of: Advanced engineering materials. Volume 19:Issue 10(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-05-22
• Subjects: Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201700075
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : The indentation response of a polycarbonate face sheet bonded to a PVC foam substrate is investigated experimentally and numerically. The deformation mode involves foam crushing, and membrane stretching of the PC layer at large indenter displacements; this is quantified using optical strain measurement techniques. The bottom corners of the foam substrate lifts off its underlying support when the foam layer is sufficiently thin. Peak load is dictated by tensile failure of the foam on the bottom face. Finite element simulations suggest that a deep foam core prevents this lift‐off and results in a greater load carrying and energy absorption capacity. Abstract : The indentation response of a polycarbonate face sheet bonded to a PVC foam substrate is investigated experimentally and numerically. The deformation mode involves foam crushing, and membrane stretching of the PC layer at large indenter displacements; this is quantified using optical strain measurement techniques. The bottom corners of the foam substrate lifts off its underlying support when the foam layer is sufficiently thin. A deep foam core prevents this lift‐off and results in a greater load carrying and energy absorption capacity.