  In this work we explore mechanical properties of graphene samples of variable
thickness. For this purpose, we coupled a high pressure sapphire anvil cell to
a micro-Raman spectrometer. From the evolution of the G band frequency with
stress we document the importance the substrate has on the mechanical response
of graphene. On the other hand, the appearance of disorder as a conse-quence of
the stress treatment has a negligible effect on the high stress behaviour of
graphene.
