DEVELOPMENT OF COMPUTATIONAL ALGORITHMS FOR PROBABILISTIC FRACTURE MECHANICS

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Authors
  1. Orisamolu, I.R.
  2. Liu, Q.
  3. Chernuka, M.W.
Corporate Authors
MARTEC Ltd, Halifax NS (CAN);Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
Probabilistic fracture mechanics is increasingly gaining recognition and acceptance as the most realistic framework for assessing the integrity of engineering structures that are susceptible to fatigue crack growth and fracture. This is due to the fact that the presence of aleatory uncertainties in material properties, geometry and loads and the epistemic uncertainties associated with modelling and application of fatigue damage and fracture strength formulations are best accounted for using stochastic models. The merit of this approach has long been recognized by the nuclear and aerospace industries where fatigue/fracture failures could be of catastrophic proportions. It is not surprising, therefore, that most of the existing computer programs for probabilistic fracture mechanics were developed by these industries. However, the programs are mostly proprietary and are generally not available in the public domain. Furthermore, most of the programs are based on simulation schemes which are prohibitively expensive especially for application to large-scale structures such as submarines or ships. A corporate research and development effort was recently initiated at Martec to develop generic and specialized computer programs that could be routinely utilized for probabilistic reliability analysis of structures prone to a variety of failures. TRUNCATED
Report Number
DREA-NAMT-93-4-PAP-15 — CONTAINED IN 99-00578
Date of publication
30 Apr 1993
Number of Pages
1
DSTKIM No
99-00594
CANDIS No
510320
Format(s):
Hardcopy;Document Image stored on Optical Disk

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