Location

Williamsburg, VA

Start Date

1-1-1986 12:00 AM

Description

By using dyadic Green’s functions the electromagnetic field in an unflawed conducting half-space can be found for a general alternating current source distribution. A crack in the conductor gives rise to a secondary source which may be represented as a surface distribution of current dipoles. An integral equation for the secondary source distribution is derived and the dipole density evaluated numerically for a rectangular subsurface crack.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

5A

Chapter

Chapter 1: Conventional Methodologies

Section

Eddy Currents

Pages

149-155

DOI

10.1007/978-1-4615-7763-8_16

Language

en

File Format

application/pdf

Share

COinS
 
Jan 1st, 12:00 AM

Eddy Current Field Theory for a Flawed Conducting Half-Space

Williamsburg, VA

By using dyadic Green’s functions the electromagnetic field in an unflawed conducting half-space can be found for a general alternating current source distribution. A crack in the conductor gives rise to a secondary source which may be represented as a surface distribution of current dipoles. An integral equation for the secondary source distribution is derived and the dipole density evaluated numerically for a rectangular subsurface crack.