Developmental Activities Towards a Real-Time Defect Severity Assessment System for Naval Platforms


  1. Porter, J.
  2. Bayley, C.
  3. Hargreaves, C.
  4. Smith, C.
  5. Luznik, L.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
The Canadian Navy is developing a rational integrated approach to the design, construction, and maintenance of its ships, in order to maximize operational availability and minimize life-cycle maintenance costs. Naval platforms have been and will be required to conduct operations with cracks present in structural components. The requirement exists to provide the operators with a measure of confidence that these defects do not pose a serious risk to structural integrity. To assist in these efforts, Defence Research Establishment Atlantic (DREA), in collaboration with Fleet Technology Ltd (FTL), have undertaken numerous fatigue studies to develop a clearer understanding of the factors that govern fatigue in naval platforms. In addition, DREA and FTL have worked in close collaboration with the Directorate of Maritime Ship Support (DMSS) and the Naval Engineering Test Establishment (NETE) on numerous experimental investigations of fatigue prone areas on existing naval platforms. As a consequence of these efforts, it was realized that the development of a shipboard system for the continuous monitoring of detected fatigue cracks and their associated driving forces could provide operators with a continuous measure of the defects severity and the structural integrity. To this end, a developmental activity to create a Defect Severity Assessment System (DSAS) was initiated. TRUNCATED
Report Number
DREA-SR-1999-162-PAP-48 — CONTAINED IN CA000150
Date of publication
01 Oct 1999
Number of Pages
Hardcopy;Document Image stored on Optical Disk

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