Inverse Analysis of Galvanic Corrosion Using Fuzzy A Priori Information
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概要
- 論文の詳細を見る
A new method for estimating the galvanic corrosion rate is developed. In the case where the electrochemical polarization curves of metal in the electrolyte are available, the galvanic corrosion rate can be estimated by solving the Laplace equation with boundary conditions based on the polarization curves. The polarization curves, however, are not always available. In such a case, it is necessary to estimate the density of the current across the metal surfaces from the potential values measured at points far away from the metal surfaces. Since this inverse problem is ill-conditioned, direct application of the conventional method results in an oscillatory solution. To circumvent this problem, we formulate an inverse problem and employ the boundary element method to estimate the polarization curves. In addition, the estimation accuracy is improved by using a priori information which is expressed as fuzzy membership functions. Sample problems are also presented to demonstrate the effectiveness of this new method.
- 一般社団法人日本機械学会の論文
- 1995-10-15
著者
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Amaya Kenji
Tokyo Institute Of Technology
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AOKI Shigeru
Tokyo Institute of Technology
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Togashi Jun
Tokyo Institute of Technology
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