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3.6 Damage Mechanism Evaluation
Damage characterisation of the tested specimens were investigated to find the
crucial information based on the failure modes exhibited by the composite hybrid
specimens. Fracture specimens from tensile and flexural tests were analysed with the
assist of Scanning Electron Microscopy (SEM), while optical microscopy was used to
investigate the fracture surfaces of quasi-static indentation and low velocity impact
specimens.
3.6.1 Scanning Electron Microscopy (SEM)
A Scanning Electron Microscopy (SEM) EVO 50 (Carl Zeiss, UK) was used
to analyse the morphological structures of the hybrid composites as shown in Figure
3.13. Prior to morphological examination, the fracture specimens were sputter-coated
with gold and the SEM micrographs were obtained under conventional secondary
electron imaging conditions with an acceleration voltage of 15 kV.
Figure 3.13 Scanning Electron Microscopy (SEM) EVO 50
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