NDE of interfaces in the tube geometry with piezofilm transducers

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5951318

Hsu, D K; Zhang, Zhong

The flexible polymer piezofilms such as polyvinylidene fluoride (1) (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. 5 refs., 6 figs.

• Research Organization: Ames Lab., IA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 5951318
• Report Number(s): IS-M-691; CONF-911220--1; ON: DE92006586
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
42 ENGINEERING
420500* -- Engineering-- Materials Testing
440800 -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
ALLOYS
ELECTRICITY
ELEMENTS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
METALS
NICKEL ALLOYS
NITINOL
NONDESTRUCTIVE TESTING
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PIEZOELECTRICITY
SOUND WAVES
STAINLESS STEELS
STEELS
TESTING
TITANIUM ALLOYS
TRANSDUCERS
TRANSITION ELEMENTS
TUBES
ULTRASONIC WAVES
ZIRCALOY
ZIRCONIUM
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS