Evaluation of piezoelectric paints as vibration and acoustic emission sensors

Book · Sat Dec 31 04:00:00 EST 1994

OSTI ID:395181

Egusa, Shigenori ^[1]; Iwasawa, Naozumi ^[2]

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1. Japan Atomic Energy Research Inst., Takasaki, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment
2. Kansai Paint Co., Ltd., Hiratsuka, Kanagawa (Japan). New Business Div.

Piezoelectric paints were prepared using lead zirconate titanate (PZT) ceramic powder as a pigment and epoxy resin as a binder. The obtained paints were coated on aluminum test specimens, and were cured at room temperature or at 150 C, thus forming the paint films having thicknesses of 25 to 300 {micro}m and a PZT volume fraction of 53%. These films were then poled at room temperature, and were evaluated with regard to the sensitivities as vibration and acoustic emission sensors in the frequency ranges of 0--25 Hz and 0--1.2 MHz, respectively. The paint film sensitivity obtained under a given poling field depends on the film thickness, the cure temperature, and the PZT/epoxy composition in the pigment paste (an intermediary product of the final paint). A good correlation is found between the sensitivity and the electrical conductivity for all the paint films studied, thus indicating that the actual poling field acting on the PZT particles dispersed in epoxy resin is determined by the electrical conductivity of the paint film.

• OSTI ID: 395181
• Report Number(s): CONF-940691--; ISBN 1-56676-171-9
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
ACOUSTIC MONITORING
CHEMICAL PREPARATION
DAMAGE
ELECTRIC CONDUCTIVITY
EVALUATION
EXPERIMENTAL DATA
FABRICATION
MECHANICAL VIBRATIONS
MONITORING
MONITORS
PAINTS
PIEZOELECTRICITY
REAL TIME SYSTEMS
SENSITIVITY