An approximate model for three-dimensional alternating current potential drop analyses using a commercial finite element code

作者：Sposito Giuseppe; Cawley Peter^*; Nagy Peter B

来源：NDT & E International, 2010, 43(2): 134-140.

DOI：10.1016/j.ndteint.2009.10.002

• Potential drop
• Modelling
• Finite element method

Alternating current potential drop (ACPD) is an established technique for non-destructive testing and materials characterisation. Finite element (FE) simulation is a very useful tool for the optimisation of probes and the prediction of test results, but three-dimensional models of ACPD problems are computationally intensive. This paper presents a new, simple model in which frequency-related effects are taken into account by appropriately modifying the geometry of the modelled structure: a DC analysis can then be performed on a smaller domain, thus reducing the computational power required. The results of experimental tests for the validation of the model are also presented and discussed.

• 出版日期2010-3