Ultrasonic flaw detection of a pipe
A method is disclosed of ultrasonic flaw detection of a pipe, for instance for a heater pipe as is used for catalytic gas reforming with steam. A transmitter probe and a receiver probe are disposed on the pipe outer surface with suitable spacing one from the other both in axial or longitudinal direction and in peripheral direction of the pipe. The transmitter probe launches ultrasonic radiation under proper angle of incidence upon the pipe outer surface at the point of entering material of the pipe, to be refracted under a particular angle of refraction so that it may then pass through the material of the pipe straight to another point upon the pipe outer surface. The receiver probe receives the ultrasonic radiation transmission echo. Flaw in the material of the pipe is detected from fluctuation of the echo, as seen upon scanning the pipe surface by moving the transmitter and receiver probes.
- Assignee:
- Kubota Ltd.; Osaka Gas Kabushiki Kaisha (Japan)
- Patent Number(s):
- US 4467654
- OSTI ID:
- 6413262
- Country of Publication:
- United States
- Language:
- English
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Ultrasonic probe system for the bore-side inspection of tubes and welds therein
Ultrasonic probe system for the bore-side inspection of tubes and welds therein
Related Subjects
030300* -- Natural Gas-- Drilling
Production
& Processing
032000 -- Natural Gas-- Transport
Handling
& Storage
ACOUSTIC TESTING
CATALYTIC CRACKING
CHEMICAL REACTIONS
CHEMICAL REACTORS
CORROSION
CORROSIVE EFFECTS
CRACKING
DECOMPOSITION
ENERGY SOURCES
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FLOW
GAS FUELS
GASES
HEATERS
MATERIALS TESTING
NATURAL GAS
NONDESTRUCTIVE TESTING
PIPES
PYROLYSIS
SIGNAL-TO-NOISE RATIO
STEAM
TESTING
THERMOCHEMICAL PROCESSES
ULTRASONIC TESTING