• 1 Universiti Teknikal Malaysia Melaka


Honeycomb with good mechanical properties and low density are the top priorities in
material selection. Therefore, the facesheet thickness is a factor that contributes to it
as it made up most of the weight in the structure. Appropriate thickness can optimize
the mechanical performance. However, the sandwich composite may associate to high
density if the facesheet is of high thickness yet deteriorate the mechanical properties
as an overall. As the facesheet is attached to the sandwich structure via matrix, the
peeling properties for various facesheet thickness is investigated. The facesheet
thickness in terms of one to five layers are glued to the rubber wood core. The
structures are tested for its peeling strength under vertical 90° test according to the
ASTM standard. The optimal number of facesheet with good peeling strength is