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- Safety assessment (6)
- Container design (5)
- Ductile iron (5)
- Dynamic loading conditions (5)
- Fracture mechanics (5)
- Accident (2)
- Blast wave (2)
- Damping concrete (2)
- Drop test (2)
- Finite element analysis (2)
Practical methods for the safety assessment of postulated crack-like material defects of cubic containers made of ductile cast iron are presented. A formula for the stress intensity factor of a crack in a fillet with a radius from 20 to 200 mm under static load conditions is given. From that, an assessment diagram is derived for the critical depth of a crack in a fillet. The formula may be used to estimate the stress intensity factor of a dynamically loaded crack for special cases. As an application the results of the estimation procedure are compared with the results of a dynamic finite element calculation.