So increasing the volume fraction of the craze can reduce
the true stress on an individual craze. Thus, if the
small size of the rubber domains in the PLA matrix causes
the critical stress for cavitation to be greater than that of an
alternative deformation mechanism (e.g., matrix crazing),
the matrix phase may yield prior to cavitation. [40] Consequently,
the phenomenon of multiple crazing was likely
the possible energy dissipation mechanism.