Accession Number:

AD0720958

Title:

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

Descriptive Note:

Corporate Author:

CENTRAL DOCKYARD LAB PORTSMOUTH (ENGLAND)

Personal Author(s):

Report Date:

1970-01-01

Pagination or Media Count:

5.0

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.

Subject Categories:

  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE