Development of test methods for determining the skin-to-core bond strength of thick-skinned sandwich constructions
Published March 16, 1999 by Institution of Mechanical Engineers in United Kingdom
The climbing drum peel test method is severely limited when testing the skin-to-core bond strength of thick-skinned sandwich constructions typically used in the marine industry. High skin stiffnesses will create the same difficulties. Alternative test configurations have been proposed for determining the skin-to- core bond strength of these types of materials. A variety of core/skin combinations and geometries have been selected and are being assessed in order to ascertain the robustness and applicability of proposed test methods to UK industry. In addition, a number of analytical techniques, including boundary and finite element methods, are being employed to theoretically model the proposed methods. The National Physical Laboratory (NPL) and the University of Liverpool, have collaborated in these developments.
As a by-product of the work on thick-skinned constructions, developments have also been made to alternative methods for thin- skinned constructions and improvements proposed for the climbing drum test.