3. Experimentation
The investigation was carried out in aluminium AA1050-H111
sheets with 1 mm thickness and the experimental tests that are
needed to validate the proposed analyticalframework to characterize
fracture loci under plane stress conditions directly from fracture
toughness in crack opening modes I and II of fracture mechanics
were retrieved from previous research works performed by
the authors. Consequently, this section will only present a brief
summary of the methodologies and results associated with the
mechanical characterization and determination of the formability
limits and fracture toughness of the material that are relevant for
the aims and objective of this paper. Further details and experimental
testing conditions are given in