NDE of interfaces in the tube geometry with piezofilm transducers [Book Chapter]

Conference · Sun Dec 08 00:00:00 EST 1991 · IEEE 1991 Ultrasonics Symposium

DOI:https://doi.org/10.1109/ULTSYM.1991.234067· OSTI ID:10115475

Hsu, David K. ^[1]; Zhang, Zong ^[1]

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1. Ames Laboratory, and Iowa State Univ., Ames, IA (United States)

The flexible polymer piezofilms such as polyvinylidene fluoride (PVDF) posses distinct advantages as ultrasonic transducers for inspecting cylindrically symmetric components, including rods, pipes, cladding, and tube interfaces. The flexibility and contour conforming nature of the film transducer ensure normal incidence and avoid mode conversion. In this work, PVDF transducers are used in the evaluation of interfaces in coaxially extruded Zirconium-Zircaloy tubes and the clamping condition of Nitinol couplers over stainless steel tubing. Detailed description will be given for the evaluation of an interface in a Zirconium-Zircaloy tube, on which the same transducer was used both as the transmitter and the receiver. The multiple echo signals were analyzed and reflection coefficient as small as 0.006 was accurately measured. Comparison will be made with the measurement results of conventional transducers.

• Research Organization: Ames Laboratory (AMES), Ames, IA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 10115475
• Report Number(s): IS-M--691; CONF-911220--1; ON: DE92006586
• Resource Type: Conference paper/presentation
• Conference Information: Journal Name: IEEE 1991 Ultrasonics Symposium
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104
42 ENGINEERING
420500
440800
47 OTHER INSTRUMENTATION
FLUORINATED ALIPHATIC HYDROCARBONS
MATERIALS TESTING
MISCELLANEOUS INSTRUMENTATION
NITINOL
NONDESTRUCTIVE TESTING
PHYSICAL PROPERTIES
PIEZOELECTRICITY
STAINLESS STEELS
TRANSDUCERS
TUBES
ULTRASONIC WAVES
ZIRCALOY
ZIRCONIUM