Location

Brunswick, ME

Start Date

1-1-1992 12:00 AM

Description

Coated metals are used increasingly for a variety of technological purposes; the coatings provide wear resistance, good electrical contact, corrosion protection, and thermal isolation. Consequently the ability to determine the thickness, conductivity, and structural integrity of such coatings is important for both process control and in-service inspection of parts. Presently ultrasonic, thermal, and eddy current inspection methods are used, depending on the circumstances. Current inspection practices using these methods are often limited in their ability to provide quantitative estimates of the important parameters. In this paper we present a robust method that uses eddy current measurements to determine the thickness and conductivity of uniform conductive layers.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

11A

Chapter

Chapter 1: Fundamentals of Standard Techniques

Section

Eddy Currents

Pages

281-287

DOI

10.1007/978-1-4615-3344-3_35

Language

en

File Format

application/pdf

Share

COinS
 
Jan 1st, 12:00 AM

Measuring Thickness and Conductivity of Metallic Layers with Eddy Currents

Brunswick, ME

Coated metals are used increasingly for a variety of technological purposes; the coatings provide wear resistance, good electrical contact, corrosion protection, and thermal isolation. Consequently the ability to determine the thickness, conductivity, and structural integrity of such coatings is important for both process control and in-service inspection of parts. Presently ultrasonic, thermal, and eddy current inspection methods are used, depending on the circumstances. Current inspection practices using these methods are often limited in their ability to provide quantitative estimates of the important parameters. In this paper we present a robust method that uses eddy current measurements to determine the thickness and conductivity of uniform conductive layers.