Analysis of a fork-shaped rectangular coil oriented perpendicular to moving conductor slabs

作者：Itaya Toshiya^*; Ishida Koichi; Tanaka Akio; Takehira Nobuo; Miki Toshikatsu

来源：NDT & E International, 2011, 44(5): 413-420.

DOI：10.1016/j.ndteint.2011.04.002

• Eddy current testing
• Rectangular coil
• Induced electromotive force

Vertical-type coils arranged perpendicular to conductor slabs have proven useful for nondestructive testing. Because the fork-coil method offers the advantage that the lift-off effect is fundamentally removed, we analyze a fork-shaped rectangular coil oriented perpendicular to conductor slabs. Our calculations elucidate some characteristics of the conductor and the coil arrangement as a function of system parameters such as the slab dimensions, speed, and direction of motion. We validate the results of the calculation by comparing them with experimental results.

• 出版日期2011-9