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SNAME 2006 SSC History Timeline 1946 · Formed based on a recommendation of the Board of Investigation studying the brittle fracture of the Liberty Ships. · Continued research in Ship Structures 1950s - 60s · mechanical metallurgy · chemical & physical metallurgy · geometry of structural members · transition temperatures · effect of edge preparations 1970s · new designs - new structural concerns · catamarans · dynamically supported vessels · cryogenic product · full transverse fracture 1980s · fatigue failure in new high strength steel vessels · oil pollution prevention · failure mechanisms and their abatement 1990s · reliability based ship design · improved structural detail design · welding practices · inspection techniques · investigate expanded use of composite materials in marine structures 2000s · reliability/risk methodologies · human element in ship design · high speed vessels · crashworthiness of ship structures An aluminum test model after being exposed to the test load (notice the deformation). Over 70 physical model tests on the collapse of welded aluminum stiffened panels under axial compressive loads have been carried out with a variety of geometrical dimensions and aluminum alloys. Model test results are compared with a variety of different Finite Element Analyses techniques used in design of aluminum multi-hulled vessels. geometry of structural members. In the 1970's unexpected failures, such as the full transverse fracture of barge IOS 3301, proved the need for continued research in ship structure. In the 1980's unexpected fatigue failures in relatively new high strength steel vessels and additional failures in barges and bulkers renewed the concerns for fatigue analysis and structure research. Additionally, concern for oil pollution prevention cre32 ated interest in failure mechanisms and their abatement. The committee conducted projects that developed reliability based methods for ship design and predicted problem areas to prevent failures in double hull vessels. SSC research has been influenced recently by the popularity of composites and aluminum. Since 1996, the SSC has conducted general symposiums that have covered the following areas: reliability/risk methodologies, human element in ship design, and crashworthiness of ship structures. This past year, the focus of the SSC projects have been on aluminum, which will be featured at the SSC's next symposium which will be combined with PRADS 2007 in Houston. The SSC has been actively conducting cutting edge research and sharing results freely with the maritime industry for sixty years and it looks forward to continue this research in the years to come. The principal members on the committee come from the following organizations: · Military Sealift Command · American Bureau of Shipping · Defense Research and Development Canada · Society of Naval Architect and Marine Engineers · · · · Transport Canada United States Coast Guard Naval Sea Systems Command Maritime Administration SSC Mission To enhance the safety of life at sea, promote technology and education advancements in marine transportation, and to protect the marine environment. This will be done through advocating, participating in, and supporting cooperative research and development in Structural Design, Life Cycle Risk Management of Marine Structures, and Production Technologies. Maritime Reporter & Engineering News