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Marine Structures Research Recommendations Recommendations for the Interagency Ship Structure Committee's FYs 1998-1999 Research Program (1997) / Chapter Skim
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APPENDIX C: SHIP STRUCTURE COMMITTEE STRATEGIC PLAN
Pages 93-98

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From page 93...
... Objective Expenmentally study the fracture behavior of mismatched weIdments to evaluate new analytical and numencal solutions of fracture parameters for improved safety and integrity assessment of ship structures. Benefit The fracture behavior in mismatched weldments can be more correctly evaluated with the development of a fracture parameter that includes the effects of the strength mismatch.
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From page 94...
... SSC Strategy Development of better design tools and infonnation systems Background The new Canadian Arctic Shipping Pollution Prevention Regulations (ASPPR) allow for plastic design to meet extreme ice loads; thus it is of great importance to vend that structural design practices and regulations incorporate the necessary details to maintain stabilizer as far as practical as Bend progresses under an extreme load, while also avoiding unnecessary weight in the structure and consequent economic penalties.
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From page 95...
... Phase 2 Install fiber-optic gauges in a monitoring system, observe their effectiveness over an extended period, and evaluate and report. Duration Phase ~ 400 labor hours over 0.5 years Phase 2 labor hours and time to be determined in phase ~ 95M-C Intelligent Composite Structure Development for Marine Applications Objective Apply smart composite-structures technology to marine and offshore structures to provide enhanced productivity and improved safety through incorporation of integral power and signal transmission capabilities and structural and safety monitoring devices.
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From page 96...
... The opportunities are almost boundless but wild require imagination and development. Recommendations Perform the following tasks: · Survey the existing technology base for smart structures, and identify marine and offshore structure applications where smart composite structures would enhance productivity or improve safety.
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From page 97...
... SSC Strategy Structural reliability engineering Background Increased use of polymer-based composite materials in marine structures raises questions concerning the effects of long-te~ manne exposure on the degradation of composites and also the effects of these composites on the corrosion of metals. When polymer-based composites were first used in aircraft, they absorbed water, which resulted In a decrease in their structural capability.
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From page 98...
... · Identify eng~neenng metals and alloys that are galvanically compatible with graphite, and investigate methods for electncally isolating graphite-reinforced composite/metal interfaces. Duration 3,500 labor hours over 3 years 95M-T Analysis and Design Technology Development for Marine Composite Structures (94M-N)
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Key Terms

  • labor hours
  • ssc strategy
  • fracture behavior
  • national goal
  • ssc national

  • fracture parameter
  • marine structures
  • goal improve
  • composite materials
  • strategy structural

  • fracture parameters
  • composite structure
  • strain gauge
  • improved safety
  • strength mismatch

  • ssc projects
  • structural components
  • manne structures
  • ship structures
  • structural monitoring

  • propeller blade
  • test specimens
  • external loading
  • technology base
  • smart composite

  • mismatched weldments
  • particular reference
  • service background
  • structural performance
  • marine environment


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