DefinePK

Abstract

Low velocity impact response of aluminium honeycomb core sandwich panels have been investigated by varying core height using a flat impactor of 25 x 25mm. The impact energy levels were varied from 6.32J to 49.72J and energy absorbed, peak load developed and maximum penetration were recorded for each test specimen. Quasi-static tests on aluminium facing sandwich panels of the same dimension (150 x 150mm) and boundary conditions as impact test using flat indenter of 25 x 25mm were conducted in order to co-relate these results with impact tests. A variation in core height of aluminium honeycomb core does not show any significant change in energy absorbing capacity of the sandwich panels. It is observed that an increase in core height increases the time taken to reach peak energy which is desirable for many applications like automobile bumper. Quasi-static test and impact test were co-related using impact factor in the linear elastic region.