Detecting Damage Using Electric Field Measurements: A Computational Sensitivity Study.

摘要

The objective of the Underwater Hull Analysis Model project was to develop a computational condition-based assessment tool to determine the condition of hull. The model would be an advancement in the state-of-the-art for corrosion and coatings damage assessment allowing for evaluation of hull condition based on sensor data in real or near real time. The computational tool was planned to be validated using both experimental and real ship data. An initial stage in the validation process is to determine the relationship between changes in defined boundary conditions and calculated field values. This information is a key component in the capability to identify changes in hull coating damage from changes in measured field values. The work presented is computational in nature. Damage on the order of what is possible to duplicate in physical scale model experiments is added to a known quality of damage. Variations in key calculated parameters are determined, and implications for the creation of the assessment tool are noted. This work provides information on the relationship between incremental damage change and measurable field differences.