1. ASTM (2008) ASTM E 1290-08—standard test method for crack-tip opening displacement (CTOD) fracture toughness measurement. ASTM, pp 1–15
2. ASTM (2014) ASTM E1820-13—standard measurement of fracture toughness. ASTM, pp 1–54
3. Bradley WB, Kobayashi AS (1970) An investigation of propagating cracks by dynamic photoelasticity. Exp Mech 10(3):106–113. https://doi.org/10.1007/BF02325114
4. Broek D (2012) Elementary engineering fracture mechanics. Springer, Berlin
5. BS 5762 (1979) Methods for crack opening displacement (COD) testing