Accession Number : ADA305287

Title :   Ship Maintenance Project. Volume 1. Fatigue Damage Evaluation.

Descriptive Note : Final rept.,

Corporate Author : CALIFORNIA UNIV BERKELEY DEPT OF NAVAL ARCHITECTURE

Personal Author(s) : Cramer, E. H. ; Schulte-Strauthaus, R. ; Bea, R. G.

PDF Url : ADA305287

Report Date : 1995

Pagination or Media Count : 323

Abstract : This report is one in a series of reports conducted as part of a two year Joint Industry Research Project Structural Maintenance for New and Existing Ships initiated in June 1990 by the Department of Naval Architecture and Offshore Engineering of the University of California at Berkeley to both develop practical tools and procedures for the analysis of proposed ship structural repairs and to prepare guidelines for the cost effective design and construction of lower maintenance ship structures. This project was organized into six studies. This report is based on the results of Study 1 -- Fatigue Damage Evaluations whose objective is to develop and verify engineering guidelines for the evaluation of fatigue damage to critical structural components of existing ships. There are three reports. The first report addresses the fatigue reliability of welded details in tanker structures having multiple fatigue crack initiation sites. The second report includes a summary of the general fatigue life evaluation and fracture mechanics procedures, a description of the long term loading, a description of the uncertainties, and a description of the probabilistic and deterministic calculation procedures. The fatigue reliability model is extended to include the effect of inspection updating where not necessarily the whole structure considered is inspected in each inspection. The third report uses for two ship classes the integrated software package to analyze the fatigue damage for selected details and to compare the results with fatigue failure rate statistics obtained from data analyses of actual failure data.

Descriptors :   *MAINTENANCE MANAGEMENT, *SHIP STRUCTURAL COMPONENTS, INTEGRATED SYSTEMS, COMPUTATIONS, COST EFFECTIVENESS, FATIGUE LIFE, PREVENTIVE MAINTENANCE, DAMAGE ASSESSMENT, PROBABILITY, STATISTICS, RATES, FRACTURE(MECHANICS), COSTS, RELIABILITY, REPAIR, FATIGUE(MECHANICS), FAILURE(MECHANICS), NAVAL ARCHITECTURE, CRITICALITY(GENERAL).

Subject Categories : Marine Engineering
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE