ACTIVE AND PENDING PROJECTS

This section covers current projects funded with FY 1993 (or earlier) funds, those continued with FY 1994 funds, and those that will be supported with FY 1995 funds. They constitute the current program. The majority of projects are for 1 year; multiyear projects are funded incrementally on an annual basis.

Project descriptions include the project number and title, the name of the principal investigator and organization (when determined), a brief statement of the project's objective, and the names of project chairs and technical advisers (when assigned).



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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program ACTIVE AND PENDING PROJECTS This section covers current projects funded with FY 1993 (or earlier) funds, those continued with FY 1994 funds, and those that will be supported with FY 1995 funds. They constitute the current program. The majority of projects are for 1 year; multiyear projects are funded incrementally on an annual basis. Project descriptions include the project number and title, the name of the principal investigator and organization (when determined), a brief statement of the project's objective, and the names of project chairs and technical advisers (when assigned).

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program TABLE 4 Active and Pending Projects Number Project Title Page SR-1335 Interactive Nature of Cathodic Polarization and Fatigue . . . . . . . . . . . 73 SR-1343 Optimized Weld Metal Properties for Ship Structures . . . . . . . . . . 73 SR-1344 Assessment of Reliability of Existing Ship Structures (Phase 2) . . . . 73 SR-1345 Probability-Based Design (Phase 3): Implementation of Design Guidelines for Ships . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 SR-1349 Evaluation of Ductile Fracture Models for the Prediction of Fracture Behavior of Ship Structure Details . . . . . . . . . . . . . . . . . . . . . . . . . 74 SR-1354 Grounding Protection of Tankers . . . . . . . . . . . . . . . . . . . . . . . . . . 74 SR-1355 Inspection of Marine Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 SR-1356 Strength Assessment of Pitted Plate Panels . . . . . . . . . . . . . . . . . . 75 SR-1357 Retention of Weld Metal Properties and Hydrogen Cracking . . . . . 75 SR-1358 Optimized Design Parameters for Welded TMCP Steels . . . . . . . . 76 SR-1359 U.S.–Russian Cooperative Research Effort . . . . . . . . . . . . . . . . . . 76 SR-1360 Structural Maintenance Project . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 SR-1362 Probability Based Design (Phase 4), Synthesis of the Reliability Thrust Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 SR-1363 Symposium and Workshop on the Prevention of Fracture in Ship Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 SR-1364 Guidelines for Evaluation of Finite Element Models and Results . . 78 SR-1365 Optimal Strategies for Inspection of Ships for Fatigue and/or Corrosion Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 SR-1366 Corrosion Control of Inner-Hull Spaces . . . . . . . . . . . . . . . . . . . . . 78 SR-1367 Design Guide for Marine Applications of Composites . . . . . . . . . . 79 SR-1368 Compensation for Openings in Structural Members . . . . . . . . . . . . 79 SR-1369 Fleet of the Future Publication Review . . . . . . . . . . . . . . . . . . . . . 80 SR-1370 Ship Structural Integrity Information System . . . . . . . . . . . . . . . . . 80 SR-1372 Evaluation of Marine Structures Education in North America . . . . 80 SR-1373 Hull-Response Monitoring System . . . . . . . . . . . . . . . . . . . . . . . . . 81 SR-1374 A Guide To Damage Tolerance Analysis of Marine Structures . . . . 81 SR-1375 Detection Probability Assessment of Visual Inspection of Ships . . . 81 SR-1376 Methodology to Establish the Adequacy of Weld Repairs . . . . . . . . 82 SR-1377 Commercial Ship Design and Fabrication for Corrosion Control . . . 82 SR-1378 Strength and Stability Testing of Stiffened Plate Components . . . . . 82 SR-1379 Weld Detail Fatigue Life Improvement . . . . . . . . . . . . . . . . . . . . . 83 SR-1380 Post Yield Strength of Icebreaking Ship Structural Members . . . . . . 83

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program SR-1335 Interactive Nature of Cathodic Polarization and Fatigue Investigator Carl E. Jaske Contractor Cortest Columbus Technologies Inc., Columbus, Ohio Objective Investigate the effects of cathodic polarization on fatigue of steel in sea water and how cathodic polarization is influenced by notch severity, crack size, and material composition and microstructure (steel strength). Project Chair William Hanzalek, American Bureau of Shipping, Houston, Texas Technical Adviser William H. Hartt, Florida Atlantic University, Boca Raton SR-1343 Optimized Weld Metal Properties for Ship Structures Investigator Robert J. Dexter Contractor Lehigh University, Bethlehem, Pennsylvania Objective Develop guidelines to improve productivity by optimizing weld-metal properties for use with high-strength steels. Project Chair J. Allen Manuel, Naval Sea Systems Command, Arlington, Virginia Technical Adviser James M. Sawhill, Jr., Newport News Shipbuilding, Newport News, Virginia SR-1344 Assessment of Reliability of Existing Ship Structures (Phase 2) Investigator Alaa Mansour Contractor Mansour Engineering, Inc., Berkeley, California Objective Estimate reliability levels associated with important failure modes of existing ship structures. Project Chair Robert A. Sielski, Marine Board, Washington, D.C. Technical Advisers Keith Hjelmstad, University of Illinois, Urbana; Solomon C.S. Yim, Oregon State University, Corvallis

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program SR-1345 Probability-Based Design (Phase 3): Implementation of Design Guidelines for Ships Investigator Alaa Mansour Contractor Mansour Engineering, Inc., Berkeley, California Objective Develop a prototype probability-based design or safety-checking criteria for ships. Project Chair William M. Richardson, Carderock Division, Naval Surface Warfare Center, Carderock, Maryland Technical Adviser Achintya Haldar, University of Arizona, Tucson SR-1349 Evaluation of Ductile Fracture Models for the Prediction of Fracture Behavior of Ship Structure Details Investigator Robert J. Dexter Contractor Lehigh University, Bethlehem, Pennsylvania Objective Establish the effectiveness of ductile fracture-mechanics models for predicting the fracture behavior of component ship-structure details. Project Chair Walter G. Reuter, Idaho National Engineering Laboratory, Idaho Falls Technical Adviser John Landes, University of Tennessee, Knoxville SR-1354 Grounding Protection for Tankers Investigator Tomas Wierzbicki Contractor Massachusetts Institute of Technology, Cambridge Objective Evaluate analytical methods to calculate the energy-absorption capability of double-hull tanker structures during grounding. Project Chair H. Paul Cojeen, U.S. Coast Guard, Washington, D.C. Technical Adviser none assigned

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program SR-1355 Inspection of Marine Structures Investigator Laura Demsetz Contractor University of California, Berkeley Objective Survey current practices for inspection of marine structures to estimate costs associated with various inspection methods and to quantify, for various methods and types of structures, the sensitivity of inspection methods and accuracy of measured levels of corrosion and fatigue damage. Project Chair Linwood Pendexter, American Bureau of Shipping, Houston, Texas Technical Adviser Rong T. Huang, Chevron Shipping Company, San Francisco, California SR-1356 Strength Assessment of Pitted Plate Panels Investigator John C. Daidola Contractor M. Rosenblatt and Son, New York, New York Objective Develop a simple procedure to assess the strength and integrity of pitted and grooved shell plate and other structural components of vessels in service. The procedure will evaluate corrosion damage by determining an effective thickness of pitted plate. Project Chair Stephen E. Sharpe, U.S. Coast Guard, Washington, D.C. Technical Adviser Maria Celia C. Ximenes, Chevron Shipping Company, San Francisco, California SR-1357 Retention of Weld Metal Properties and Prediction of Hydrogen Cracking Investigator Richard J. Wong, Michael G. Vassilaros Contractor Annapolis Laboratory, Carderock Division, Naval Surface Weapons Center, Annapolis, Maryland Objective Develop a method for ensuring that required weld-metal properties are produced over the complete range of welding conditions, processes, and consumables used during new construction and repair. Also, develop a reliable test for predictions of

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program weld-metal cracking to allow establishment of safe conditions to facilitate introduction of higher-strength and more-productive steels. Project Chair J. Allen Manuel, Naval Sea Systems Command, Arlington, Virginia Technical Adviser Santiago Ibarra, Amoco Corp., Naperville, Illinois SR-1358 Optimized Design Parameters for Welded TMCP Steels Investigator Lalit Malik Contractor Fleet Technology, Kanata, Ontario, Canada Objective Develop static, fatigue, and fracture strength requirements for high-strength TMCP steels and weldments. Project Chair William Hanzalek, American Bureau of Shipping, Houston, Texas Technical Adviser Harold S. Reemsnyder, Bethlehem Steel Corporation, Bethlehem, Pennsylvania SR-1359 U.S.–Russian Cooperative Research Effort Investigator Vladimir Ankudinov Contractor Designers and Planners, Inc., Arlington, Virginia Objective Contract to assess the depth of Russian technology in the area of ship structures by conducting a research effort parallel to selected existing or recent SSC projects. The primary project selected was Project SR-1352, “Extreme Waves and Wave Impact Forces.” Project Chair Alexander Malakhoff, Arlington, Virginia Technical Adviser none assigned SR-1360 Structural Maintenance Project Investigator Robert Bea Contractor University of California, Berkeley

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program Objective Continue research on structural maintenance programs, specifically: “A Repair Management System,” “Fatigue Classification of Critical Structural Details,” and “A Fatigue Study of Proposed Critical Structural Details in Double-Hull Tankers.” Project Chair H. Paul Cojeen, U.S. Coast Guard, Washington, D.C. Technical Adviser none assigned SR-1362 Probability-Based Design (Phase 4), Synthesis of the Reliability Thrust Area Investigator not yet determined Contractor not yet determined Objective Provide a coherent synthesis of the projects in the reliability thrust area and related SSC projects, as well as the most recent developments that are likely to impact marine structural-reliability analysis and design. Provide a document that summarizes the state of the art in marine structural reliability. This document would be the fundamental reference for (1) development of a probability-based ship-structure design code, (2) definition of procedures for performing failure analysis, and (3) reliability analysis for existing ships. Project Chair H. Paul Cojeen, U.S. Coast Guard, Washington, D.C. Technical Adviser Maria Celia C. Ximenes, Chevron Shipping Co., San Francisco, California SR-1363 Symposium and Workshop on the Prevention of Fracture in Ship Structures Investigator John Landes, University of Tennessee, Knoxville, Tennessee Contractor Committee on Marine Structures Objective In order to rationally address causes and remedies for the rash of structural failures occurring in ships, provide the means for bringing together experts in the fields of fatigue, fracture, and reliability of marine structures and the researchers, designers, fabricators, and operators of these marine structures. Project Chair Steve Allen, U.S. Coast Guard Research and Development Center, Groton, Connecticut Technical Adviser none assigned

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program SR-1364 Guidelines for Evaluation of Finite Element Models and Results Investigator Roger Basu Contractor Mil Systems, Ottawa, Ontario, Canada Objective Develop a methodology for efficiently qualifying finite-element–method codes and models for engineering analysis of ship structures. Provide guidelines for modeling in typical marine applications and for rapid assessment of validity of results. Increase the usefulness and confidence level of finite-element analyses in the design and evaluation of ship structures. Establish the feasibility of developing specific guidelines for the development and validity assessment of finite-element–method models and results. Project Chair Stephen Gibson, National Defence Headquarters, Ottawa, Ontario, Canada Technical Adviser none assigned SR-1365 Optimal Strategies for Inspection of Ships for Fatigue and/or Corrosion Damage Investigator not yet determined Contractor not yet determined Objective Develop an optimal strategy for inspection of ships in service. The focus will be on tankers. Reduce maintenance costs for ships, while maintaining or improving safety and reliability. Project Chair Philip G. Rynn, American Bureau of Shipping, Houston, Texas Technical Adviser not yet determined SR-1366 Corrosion Control of Inner-Hull Spaces Investigator Miles Kikuta Contractor M. Rosenblatt and Son, Inc., Arlington, Virginia Objective Investigate methods for controlling corrosion in the region between the inner and outer hulls in new double-hulled designs. These methods will help ensure the safety

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program and integrity of the vessels and mitigate corrosion in the inter-hull area of double-hulled vessels. Feasible methods will be ranked according to potential cost-effectiveness. Project Chair Rickard Anderson, Military Sealift Command, Washington, D.C. Technical Adviser Jack McIntyre, Florida Atlantic University, Boca Raton SR-1367 Design Guide for Marine Applications of Composites Investigator not yet determined Contractor not yet determined Objective Develop a guide for the safe and cost-effective design of composite components for ships and offshore structures. A design guide for the application of composites to marine structures would provide a valuable resource to ship and offshore platform designers and fabricators. Project Chair William M. Hayden, U.S. Coast Guard, Washington, D.C. Technical Adviser not yet determined SR-1368 Compensation for Openings in Structural Members Investigator not yet determined Contractor not yet determined Objective Establish rational methodologies and guidelines for the determination of appropriate compensation for small and large openings in primary structural members of ships. Two sets of guidelines are required, one suitable for preliminary and contract design and another for detailed design. The efficiency and reliability of structural reinforcements around openings in primary structures should be improved and their design and construction should be made less costly. Project Chair Stephen G. Arntson, American Bureau of Shipping, Arlington, Virginia Technical Adviser not yet determined

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program SR-1369 Fleet of the Future Publication Review Investigator John W. Fisher Contractor Lehigh University, Bethlehem, Pennsylvania Objective Review the work published by the Center for Advanced Technology for Large Structural Systems of Lehigh University under the U.S. Navy-sponsored “Fleet-of-the-Future” program. Summarize the material in a single volume and publish it as an SSC report. Project Chair William J. Siekierka, Naval Sea Systems Command, Arlington, Virginia Technical Adviser none assigned SR-1370 Ship Structural Integrity Information Systems Investigator Robert Bea Contractor University of California, Berkeley Objective Develop a plan for an industry-wide database system intended to connect owners, operators, designers, shipbuilders, regulatory bodies, and classification societies with vessel design particulars, failure records, and repair information in order to better prevent future failures. Project Chair Robert Holzman, U. S. Coast Guard, Washington, D.C. Technical Adviser none assigned SR-1372 Evaluation of Marine Structures Education in North America Investigator not yet determined Contractor not yet determined Objective Provide the knowledge needed for the SSC to wisely and effectively take steps to improve the structural engineering departments in North American colleges and universities in support of ship structural design. Project Chair Robert Holzman, U. S. Coast Guard, Washington, D.C.

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program Technical Adviser none assigned SR-1373 Hull-Response Monitoring System Investigator not yet determined Contractor not yet determined Objective Define a hull-response monitoring system capable of measuring, recording, and storing hull-girder stresses and their associated external loadings and of providing real-time information to the operators as critical stress values are approached or exceeded. Project Chair Peter Timonin, Transport Canada, Ottawa, Ontario, Canada. Technical Adviser none assigned SR-1374 A Guide to Damage Tolerance Analysis of Marine Structures Investigator not yet determined Contractor not yet determined Objective Develop an engineering guide for the analysis of the damage tolerance of marine structures that is suitable for (1) initial design, (2) fitness-for-purpose analysis during in-service inspection, and (3) life-extension analysis. Project Chair Christopher Wiernicki, American Bureau of Shipping, Houston, Texas Technical Adviser Harold Reemsnyder, Bethlehem Steel, Bethlehem, Pennsylvania SR-1375 Detection Probability Assessment of Visual Inspection of Ships Investigator not yet determined Contractor not yet determined Objective Develop a probabilistic model, based on inspection data, that will help eliminate uncertainties associated with the use of visual methods for the detection of fatigue cracks. Project Chair Linwood Pendexter, American Bureau of Shipping, Houston, Texas

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program Technical Adviser Bilal Ayyub, University of Maryland, College Park SR-1376 Methodology to Establish the Adequacy of Weld Repairs Investigator not yet determined Contractor not yet determined Objective Experimentally evaluate the adequacy of weld repairs, so that a decision regarding whether to repair at all, to repair further, or to operate without such repairs can be made on a technical basis. This will both improve safety and reduce the costs of maintenance procedures. Project Chair John Dorn, Naval Sea Systems Command, Arlington, Virginia Technical Adviser Not yet determined SR-1377 Commercial Ship Design and Fabrication for Corrosion Control Investigator John C. Daidola Contractor M. Rosenblatt and Son, Inc., New York, New York Objective Identify corrosion-control methodologies that, when incorporated into ship design and fabrication, can improve life-cycle maintenance costs and enhance the safety and integrity of marine structures. Project Chair Rickard Anderson, Military Sealift Command, Washington, D.C. Technical Adviser John F. McIntyre, Florida Atlantic University SR-1378 Strength and Stability Testing of Stiffened Plate Components Investigator not yet determined Contractor not yet determined Objective Develop and use a general purpose experimental test frame to complement and verify several past and current SSC projects as well as Defence Research Establishment Atlantic and Transport Canada research work. The tests are to measure the strength and stability of single stiffened-plate components with doubly symmetric

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program boundary conditions to represent the behavior of a stiffened grillage structure under any combination of in-place or lateral loads. Project Chair Neil Pegg, Defence Research Establishment Atlantic, Halifax, Nova Scotia, Canada Technical Adviser not yet determined SR-1379 Weld Detail Fatigue Life Improvement Investigator not yet determined Contractor not yet determined Objective Review fatigue-life improvement techniques and procedures to provide design guidance relating to these techniques, including the feasibility of techniques and procedures. Project Chair not yet determined Technical Adviser James M. Sawhill, Jr., Newport News Shipbuilding, Newport News, Virginia SR-1380 Post Yield Strength of Icebreaking Ship Structural Members Investigator C. G. DesRochers Contractor Martec Ltd. Objective Conduct an exploratory investigation into the post-yield behavior of icebreaking vessels. The underlying objective is to determine whether or not the new Canadian Arctic Ship Pollution Prevention Regulations are adequate in regard to buckling prevention. Project Chair Ian Bayly, Transport Canada, Ottawa, Ontario, Canada Technical Adviser none assigned

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Marine Structures Research Recommendations: Recommendations for the Interagency Ship Structure Committee's FYs 1996-'97 and Later-Years Research Program This page in the original is blank.