Nondestructive Evaluation Using a Reduced Order Computational Methodology

Released on by Michele L. Joyner
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  • Nondestructive Evaluation Using a Reduced Order Computational Methodology Book Detail

  • Author : Michele L. Joyner
  • Release Date : 2000
  • Publisher :
  • Genre :
  • Pages : 24
  • ISBN 13 :
  • File Size : 71,71 MB
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Nondestructive Evaluation Using a Reduced Order Computational Methodology by Michele L. Joyner PDF Summary

Book Description: This paper uses eddy current based techniques and reduced order modeling to explore the feasibility of detecting a subsurface damage in structures such as air foils and pipelines. To identify the geometry of a damage, an optimization algorithm is employed which requires solving the forward problem numerous times. To implement these methods in a practical setting, the forward algorithm must be solved with extremely fast and accurate solution methods. Therefore, our computational methods are based on the reduced order Karhunen-Loeve or Proper Orthogonal Decomposition (POD) techniques. For proof-of-concept, we implement the methodology on a 2-D problem and find the methods to be efficient and robust even with data containing 10% relative noise. Furthermore, the methods are fast; our findings suggest we can reduce the computational time on average by a factor of 3000.

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