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Figure 1

Cracks in plane with LT surface of a 2 × 2 × 36 cm R × T × L bar. Crack production, controlled in a proper pathway. Look to procedure A to D.
Cracks in plane with LT surface of a 2 × 2 × 36 cm R × T × L bar. Crack production, controlled in a proper pathway. Look to procedure A to D.