Location

La Jolla, CA

Start Date

1-1-1983 12:00 AM

Description

Preliminary studies performed during a previous investigation at SRI showed that a modified floppy-disk tape head operating at 100 kHz is a very sensitive crack detector. For example, tests on 0.25-in.-long fatigue cracks in aluminum produced signals an order of magnitude larger than those obtained using a commercial 100-kHz coil probe. The floppy-disk probe contains ferrite material, but its construction is different from other ferrite-containing eddy-current probes.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

2B

Chapter

Section 19: Eddy Currents

Pages

1187-1202

DOI

10.1007/978-1-4613-3706-5_77

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Evaluation of a Novel Eddy-Current Probe for Detecting Cracks Inside and at the Edges of Holes

La Jolla, CA

Preliminary studies performed during a previous investigation at SRI showed that a modified floppy-disk tape head operating at 100 kHz is a very sensitive crack detector. For example, tests on 0.25-in.-long fatigue cracks in aluminum produced signals an order of magnitude larger than those obtained using a commercial 100-kHz coil probe. The floppy-disk probe contains ferrite material, but its construction is different from other ferrite-containing eddy-current probes.