By J.K. Paik, R.E. Melchers
Any structural approach in provider is topic to age-related deterioration, resulting in strength matters concerning upkeep, well-being & safeguard, environmental and monetary implications. Condition evaluation of elderly Structures is a useful, unmarried resource of knowledge on structural evaluation strategies for marine and land-based buildings resembling ships, offshore installations, business plant and constructions. themes lined contain:
- present practices and criteria for structural review
- basic mechanisms and complicated mathematical tools for predicting structural deterioration
- Residual energy evaluate of deteriorated buildings
- Inspection and upkeep of elderly buildings
- Reliability and danger overview of elderly constructions
Professionals from a extensive variety of disciplines should be capable of achieve a greater knowing of present practices within the box, tips to follow the most recent complex layout and improvement applied sciences in overview, and what destiny traits may possibly be.
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Additional resources for Condition Assessment of Aged Structures (Woodhead Publishing in Mechanical Engineering)
Recent surveys revealed that some of the structural details had a design fatigue life of 2±6 years or a mean fatigue life of 6±18 years. Even today, the brace±column and column±pontoon connections for semi-submersibles with long pontoons present a challenge. The most fatigueprone and critical areas of semi-submersible platforms are much more limited in number than for ships. Inspections can, to a large extent, be carried out from the inside of the structure. This has a significant effect on the quality and costs of inspections.
In-service inspection for corrosion Degradation of steel structures below the water level is generally not a large problem provided that the cathodic protection system is adequately designed and maintained.
Fleet and vessel management software systems are used to assist inspection and maintenance planning and storage of records. 11 shows an example of a virtual ship model used for illustrating inspection areas and storing historical data and future inspection plans. It is expected that more and more interest will be focused upon the application of the technologies of nondestructive examination and monitoring (ISSC 2003, 2006a, 2009, Rizzo et al. 2007, Saidarasamoot et al. 2003). 11 Virtual ship model used for managing structural integrity of a tanker (courtesy of ABS).