Comparative study of quasi-static indentation (QSI) response of composites used in maritime transport

Abstract

The objective of this experimental investigation is to study the behavior of quasi-static indentation (QSI) of two composite panels (sandwich composite with PVC core -GFRP laminated composite) used in maritime transport, in order to develop a basic understanding of their behavior under the dynamic loading of low-velocity impact. To do so, a series of low-velocity quasi-static perforation tests were performed until the entire penetration, the force–displacement curves, the absorbed energy, and the resultant damage under this quasi-static loading were compared and analysed. The experimental results show that the absorbed penetration energy and the induced damage of the 8 mm laminates for the sandwich composites are almost the same. It was found that the effect of PVC core on quasi-static indentation behavior for sandwich composite is almost negligible, due to its low penetration resistance.