This February, American Bureau of Shipping (ABS) published the Guidance Notes on Fracture Analysis for Marine and Offshore Structures in an attempt to provide guidance for the fracture analysis not covered by the ABS Rules and Guides and supplement the design and analysis requirements issued for the Classification of specific types of marine and offshore structures.
The presence of a flaw in a ship, offshore structure, or equipment could have an impact on structural integrity and present safety concerns.
In such cases, the fracture mechanics method can be applied to analyze crack propagation and to evaluate the probable influence on structural integrity under service loads.
The Guidance Notes address three major types of loads: wave-induced loads, vibration-induced loads, and cyclic loads due to loading/offloading.
The stress analysis method is provided for determining the long-term stress range distribution.
An introduction of the types of fractures, possible countermeasures, crack drivers, and fracture assessment methods, are briefly outlined.
The effective date of the Guidance Notes is February 1st.
If you need more information, please visit the ABS Rules and Guides page, where the document is available FOR FREE.
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