Damage Assessment and Damage Tolerance of FRP Sandwich Structures

Reduction of strength of GFRP sandwich panels in naval ships by face sheet holes, cracks and impact damage

“…The aim of the current studies is to determine values of the local strength reduction factor R l , defined as the ratio of the compressive strength of a damaged panel to that of the corresponding intact panel, which is a convenient parameter for use in damage assessment procedures [1–3]. In terms of the Whitney and Nuismer models, this is the same as the quantity σ N / σ 0 .…”

“…In the period 2001–2005, extensive studies were carried out in a collaboration between the Norwegian, Swedish, Danish, Finnish and British navies, research institutions, shipyards and other suppliers of materials and services on the effects of various types of in-service damage and production defects on the structural performance of sandwich panels used in the hull structures of naval ships [1–3]. The project was led by the current paper’s first author, and major contributions were made by some of Professor Olsson’s successors at KTH [2].…”