INVESTIGATION OF HALL EFFECT DEVICES FOR FLAW DETECTION IN METALS
Technical Report
·
OSTI ID:4840286
Hall generator instrumentation and special test fixtures were employed for the detection of flaws and measurement of flaw depth in ferrous and nonferrous metals. Magnetic leakage field distribution was measured in tubular steel specimens containing artificial surface flaws from 0.004 to 0.126 in. depth. Field distribution was measured with respect to vertical and horizontal components of both field intensity and field gradient. Under the given test conditions, it was possible to estimate flaw depth from 0.017 to 0.126 in. with an accuracy of plus or minus 5%. (auth)
- Research Organization:
- Frankford Arsenal. Pitman-Dunn Lab., Philadelphia
- NSA Number:
- NSA-16-019149
- OSTI ID:
- 4840286
- Report Number(s):
- NP-11650; R-1616
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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