A tool to detect external cracks from within a metal tube
A tool using a continuous electromagnetic wave from a transverse magnetic-dipole source with a coaxial electric-dipole receiver is outlined for the detection of external sidewall cracks in boiler tubes. A numerical study of the distribution of the fields shows that the direct transmission from the source to the receiver is reduced from that in free space. Further, if the diameter of the receiver dipole is made sufficiently small, it should be possible to detect cracks with a scattering loss of up to 40dB in thin-walled boiler tubes.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE Office of Financial Management and Controller, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 453761
- Report Number(s):
- SAND--97-0170; ON: DE97003800
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method and apparatus for detecting external cracks from within a metal tube
Composite tube cracking in kraft recovery boilers: A state-of-the-art review
Digital radiographic systems detect boiler tube cracks
Patent
·
Tue Aug 07 00:00:00 EDT 2001
·
OSTI ID:873919
Composite tube cracking in kraft recovery boilers: A state-of-the-art review
Technical Report
·
Tue Jul 01 00:00:00 EDT 1997
·
OSTI ID:631170
Digital radiographic systems detect boiler tube cracks
Journal Article
·
Sun Jun 15 00:00:00 EDT 2008
· Power (New York)
·
OSTI ID:21073728