Fig. 14
From: Evaluation of chip breaker designs on tool life and hole integrity in drilling of HFRP/Al composite

SEM Images of LM geometry central insert after 120 holes at FR of 0.08 mm/rev.
From: Evaluation of chip breaker designs on tool life and hole integrity in drilling of HFRP/Al composite
SEM Images of LM geometry central insert after 120 holes at FR of 0.08 mm/rev.