What is the Ship Repair Management System?

 

The objective of this study was to further develop the computer based repair management system (RMS) developed during SMP I to assist tanker maintenance engineers in defining more efficient and effective steel repairs D. The RMS incorporated the guidelines on fracture and corrosion repairs and inspections developed during SMP L The approach taken in the development of RMS was to provide intelligent front-end access to the information required to make repair decisions.

 

The RMS method combined the use of experience-based fatigue knowledge with CSD repairs. simplified analytical procedures in order to rank repair alternatives according to the expected life and cost of the repair. The user must select the most appropriate alternative from knowledge of the economics of the ship.

 

Depending on the economic goals of the owner, a different repair alternative can be selected. The RMS study developed two primary contributions during SMP II. The first was a method for estimating the long-term cyclic stress range characteristics of a material. particular ship. This procedure was based on the observed time to cracking of a particular CSD and a Weibull long-term stress range distribution.

 

The two fled Parameters in the long-term stress range distribution were demonstrated to be relatively stable for the purposes of the simplified fatigue analysis. The second contribution was development of stress reduction (or modification) factors that could be used to define how proposed modifications to CSD would change the stress concentration factors. These stress reduction factors were developed from an extensive finite element study of alternative CSD. The RMS was incorporated into a highly interactive PC windows based program that made extensive use of graphical inputs and outputs. Extensive help windows were provided to guide repair engineers through the analyses and evaluations. Example applications were provided to illustrate how this system might be applied in repair yards.