Abstract
It is well known that high-frequency a. c. current flows along a surface due to the skin effect. A method for applying the a. c. potential drop technique is proposed to nondestructively evaluate the thickness and the electromagnetic properties of a thin layer on a material surface. First, Maxwell's equations are solved to obtain the potential drop on the surface of a layer for a cylindrical material. Next, a. c. potential drop is measured for a specimen with a thin layer of electroplating on its surface. Finally, the inverse problem is analyzed to determine the thickness and the electromagnetic properties of the electroplated layer, where measurements of the potential drop are compared with theoretical computations. It is verified that the present method can be used for the nondestructive evaluation of the thin layer.
| Original language | English |
|---|---|
| Pages (from-to) | 272-277 |
| Number of pages | 6 |
| Journal | Transactions of the Japan Society of Mechanical Engineers Series A |
| Volume | 60 |
| Issue number | 569 |
| DOIs | |
| Publication status | Published - 1994 |
Keywords
- A. C. Potential Drop Technique
- Coating
- Computational Mechanics
- Electroplating
- Inverse Problem
- Nondestructive Inspection
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering