The C.D.L. Crack Detector and Tube Tester.

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Abstract:

The C.D.L. Crack Detector was designed for the detection of cracks in tubes and bars of non-ferrous metals. In operation, it comprises a search probe which is a sliding fit around the bar under test and a portable battery operated instrument. The probe is moved along the bar and flaws are indicated by a lamp set for a predetermined fault level. A meter also gives an indication of minor faults below the threshold set for lamp illumination. The CDL Tube Tester is a development of the CDL Crack Detector designed for the inspection of heat exchanger tubes in situe. The operating frequency has been increased to 1 MHZ to reduce the depth of eddy current penetration in order to eliminate the effect of baffles and tube finning.

Author(s):
No Author(s) Identified
Author Organization(s):
CENTRAL DOCKYARD LAB PORTSMOUTH (ENGLAND)
Pagination:
0005

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
C.D.L. TM-HNJ, NSTIC-28182
Monitor Series:
28182
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*NONDESTRUCTIVE TESTING, DEFECTS(MATERIALS), COPPER ALLOYS, PIPES, CRACKS, ELECTRIC CURRENT, UNITED KINGDOM
Field(s)/Group(s):
Test Facilities, Equipment and Methods
Keyword(s):
EDDY CURRENT TESTS
Report Date:
1970 Jan 01